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TC7116 TC7116 TC7116A TC7116A TC7117 TC7117 TC7117A TC7117A 3-1/2


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3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116 TC7116A TC7116A TC7117 TC7117 TC7117A TC7117A
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
Temperature Drift Internal Reference TC7116/TC7117 ppm/°C Typ. TC7116A/TC7117A ppm/°C Typ. Display Hold Function Directly Drives Display Guaranteed Zero Reading With Zero Input Noise Stable Display Full-Scale Range (FSR) Auto-Zero Cycle Eliminates Need Zero Adjustment Potentiometer True Polarity Indication Precision Null Applications Convenient Battery Operation (TC7116/TC7116A) High Impedance CMOS Differential Inputs 1012 Power Operation 10mW
GENERAL DESCRIPTION
TC7116A/TC7117A 3-1/2 digit CMOS analogto-digital converters (ADCs) containing active components necessary construct 0.05% resolution measurement system. Seven-segment decoders, polarity digit drivers, voltage reference, clock circuit integrated on-chip. TC7116A drives liquid crystal displays (LCDs) includes backplane driver. TC7117A drives common anode light emitting diode (LED) displays directly with drive current segment. These devices incorporate display hold (HLDR) function. displayed reading remains indefinitely, long HLDR held high. Conversions continue, output data display latches updated. reference input (VREF) available with TC7106/ 7107. VREF tied internally analog common TC7116A/7117A devices. TC7116A/7117A reduces linearity error less than count. Roll-over error (the difference readings equal magnitude opposite polarity input signals) below count. High-impedance differential inputs offer leakage current 1012 input impedance. µVP-P noise performance guarantees "rock solid" reading. auto-zero cycle guarantees zero display reading with input. TC7116A TC7117A feature precision, lowdrift internal reference, functionally identical TC7116/TC7117. low-drift external reference normally required with TC7116A/TC7117A.
ORDERING INFORMATION PART CODE TC711X
blank* (reversed pins) blank (CPL pkg. only) parts have improved reference Package Code (see below): Package Code
Package
44-Pin PQFP 44-Pin PLCC 40-Pin Plastic 40-Pin CerDIP
Temperature Range
+70°C +70°C +70°C 25°C +85°C
ANALOG 0.01 INPUT
DISPLAY DISPLAY (TC7116/7116A) HOLD COMMON ANODE DISPLAY (TC7117/7117A) HLDR 2-19 SEGMENT 22-25 DRIVE BP/GND VREF MINUS SIGN BACKPLANE DRIVE
ANALOG COMMON
AVAILABLE PACKAGES
40-Pin Plastic 40-Pin CerDIP
TC7116/A BUFF TC7117/A 0.47 0.22 VREF
44-Pin Plastic Quad Flat Package Formed Leads
VINT OSC2 OSC3 OSC1 COSC
ANALOG COMMON (PIN
CONVERSIONS/SEC
44-Pin Plastic Chip Carrier PLCC
Figure Typical TC7116/A/7/A Operating Circuit
TC7116/A/7117/A-7 10/18/96 TelCom Semiconductor reserves right make changes circuitry specifications devices.
TC7116 TC7116A TC7117 TC7117A
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage TC7116/TC7116A: TC7117/TC7117A: Analog Input Voltage (Either Input) (Note Reference Input Voltage (Either Input) Clock Input TC7116/TC7116A TEST TC7117/TC7117A Package Power Dissipation, 70°C (Note CerDIP .2.29W Plastic .1.23W Plastic Chip Carrier (PLCC) .1.23W Plastic Quad Flat Package (PQFP) .1.00W
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
Operating Temperature Device +70°C Device 25°C +85°C Storage Temperature 65°C +150°C Lead Temperature (Soldering, sec) +300°C
*Static-sensitive device. Unused devices must stored conductive material. Protect devices from static discharge static fields. Stresses above those listed under Absolute Maximum Ratings cause permanent damage device. These stress ratings only functional operation device these other conditions above those indicated operational sections specifications implied. Exposure Absolute Maximum Rating Conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS (Note
Parameter
Zero Input Reading Ratiometric Reading Roll-Over Error (Difference Reading Equal Positive Negative Readings Near Full Scale) Linearity (Maximum Deviation From Best Straight Line Fit) Common-Mode Rejection Ratio (Note Noise (Peak-to-Peak Value Exceeded Time) Leakage Current Input Zero Reading Drift
Test Conditions
Full Scale 200mV VREF VREF 100mV -VIN +VIN 200mV
999/1000 ±0.2
1000
Unit
Digital Reading Digital Reading Counts
Full Scale 200mV ±1V, Full Scale 200mV Full Scale 200mV Device: +70°C Device: -25°C +85°C Device: +70°C (Ext ppm/°C) Device: -25°C +85°C Note TC7116/A Only TC7117/A Only Both Between Common Positive Supply Device: +70°C TC7116A/TC7117A TC7116/TC7117
±0.2 3.05
Counts µV/V µV/°C µv/°C ppm/°C
Scale Factor Temperature Coefficient
Input Resistance, VIH, Supply Current (Does Include Current 7117/A) Analog Common Voltage (With Respect Positive Supply) Temperature Coefficient Analog Common (With Respect Positive Supply)
ppm/°C Test +1.5 +1.5 3.35
ppm/°C ppm/°C
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
ELECTRICAL CHARACTERISTICS (Cont.)
Parameter
Temperature Coefficient Analog Common (With Respect Positive Supply) TC7116/TC7116A ONLY Peak-to-Peak Segment Drive Voltage TC7116/TC7116A ONLY Peak-to-Peak Backplane Drive Voltage TC7117/TC7117A ONLY Segment Sinking Current (Except TC7117/TC7117A ONLY Segment Sinking Current (Pin Only)
Test Conditions
Device: -25°C +85°C Between Common Positive Supply (TC7116A/TC7117A) (Note (Note Segment Voltage Segment Voltage
Unit
ppm/°C
NOTES: Input voltages exceed supply voltages, provided input current limited ±100µA. Dissipation rating assumes device mounted with leads soldered printed circuit board. Unless otherwise noted, specifications apply +25°C, fCLOCK 48kHz. TC7116/TC7116A TC7117/TC7117A tested circuit Figure Refer "Differential Input" discussion. Backplane drive inphase with segment drive "OFF" segment, 180° out-of-phase "ON" segment. Frequency times conversion rate. Average component less than 50mV. TC7116/TC7116A logic inputs have internal pulldown resistor connected from HLDR, TEST, TC7117/TC7117A logic inputs have internal pulldown resistor connected from HLDR, GND,
TC7116 TC7116A TC7117 TC7117A
CONFIGURATIONS
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
HLDR
TC7116IPL TC7116AIPL TC7117CPL TC7117ACPL (PDIP)
HLDR
TC7116IJL TC7116AIJL TC7117IJL TC7117AIJL (CerDIP)
TEST CREF CREF COMMON VBUFF BP/GND (TC7116/7117) (TC7116A/TC7117A) 100's 100's 1000's
TEST CREF CREF COMMON VBUFF BP/GND (TC7116/7117) (TC7116A/TC7117A)
COMMON
10's 100's 1000's (MINUS SIGN)
10's (MINUS SIGN)
100's
HLDR
TEST
BUFF
TEST
CREF CREF
COMMON
TC7116CLW TC7116ACLW TC7117CLW TC7117ACLW (PLCC)
BUFF
TC7116CKW TC7116ACKW TC7117CKW TC7117ACKW (FLAT PACKAGE)
HLDR
NOTES: internal connection. Pins connected substrate. potential these pins approximately external connections should made.
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
DESCRIPTION
40-Pin PDIP/ 40-Pin CerDIP Normal
44-Pin Plastic Quad Flat Package
Symbol
HLDR VINT
Description
Hold pin, Logic holds present display reading. Activates section units display. Activates section units display. Activates section units display. Activates section units display. Activates section units display. Activates section units display. Activates section units display. Activates section tens display. Activates section tens display. Activates section tens display. Activates section tens display. Activates section tens display. Activates section tens display. Activates section hundreds display. Activates section hundreds display. Activates section hundreds display. Activates section hundreds display. Activates both halves thousands display. Activates negative polarity display. backplane drive output (TC7116/TC7116A). Digital ground (TC7117/TC7117A). Activates section hundreds display. Activates section hundreds display. Activates section hundreds display. Activates section tens display. Negative power supply voltage. Integrator output. Connection point integration capacitor. Integration Capacitor section additional details. Integration resistor connection. resistor 200mV full-scale range resistor full-scale range. size auto-zero capacitor influences system noise. 0.47µF capacitor 200mV full scale 0.047µF capacitor full scale. Auto-Zero Capacitor paragraph more details. analog input connected this pin. analog HIGH input connected this pin. This primarily used analog commonmode COMMON voltage battery operation systems where input signal referenced power supply. Analog Common paragraph more details. also acts reference voltage source.
VBUFF
COMMON
TC7116 TC7116A TC7117 TC7117A
DESCRIPTION (Cont.)
40-Pin CerDIP 40-Pin PDIP Normal
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
44-Pin Plastic Quad Flat Package
Symbol
Description
0.1µF capacitor used most applications. large, common-mode voltage exists (e.g., analog common), 200mV scale used, capacitor recommended will hold roll-over error count. Positive power supply voltage. analog input required generate full-scale output (1999 counts). Place 100mV between pins 199.9mV full scale. Place between pins full scale. paragraph Reference Voltage. Lamp test. When pulled HIGH V+), segments will turned display should read -1888. also used negative supply externallygenerated decimal points. Test paragraph more details. Pins make oscillator section. 48kHz clock readings sec), connect junction 100k resistor 100pF capacitor. 100k resistor tied 100pF capacitor tied
TEST
OSC3 OSC2 OSC1
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
AUTOZERO INTEGRATOR TEMP DRIFT DIGITAL SECTION COMPARATOR CINT VINT
VREF
CREF BUFF
RINT
ZENER VREF
ANALOG COMMON
TC7116 TC7116A TC7117 TC7117A
Figure Analog Section TC7116/TC7116A TC7117/TC7117A
ANALOG SECTION (All designations refers 40-Pin DIP)
Figure shows block diagram analog section TC7116/TC7116A TC7117/TC7117A. Each measurement cycle divided into three phases: autozero (A-Z), signal integrate (INT), reference integrate (REF) deintegrate (DE).
Reference Integrate Phase
final phase reference integrate, deintegrate. Input internally connected analog common input high connected across previously charged reference capacitor. Circuitry within chip ensures that capacitor will connected with correct polarity cause integrator output return zero. time required output return zero proportional input signal. digital reading displayed 1000 VREF
Auto-Zero Phase
High inputs disconnected from pins internally shorted analog common. reference capacitor charged reference voltage. feedback loop closed around system charge auto-zero capacitor (CAZ) compensate offset voltages buffer amplifier, integrator, comparator. Since comparator included loop, accuracy limited only system noise. offset referred input less than 10µV.
Reference
positive reference voltage referred analog common.
Differential Input
This input accept differential voltages anywhere within common-mode range input amplifier specifically, from below positive supply above negative supply. this range, system CMRR typical. However, since integrator also swings with common-mode voltage, care must exercised ensure that integrator output does saturate. worst- case condition would large, positive commonmode voltage with near full-scale negative differential input voltage. negative-input signal drives integrator positive when most swing been used positive common-mode voltage. these critical applica7
Signal-Integrate Phase
auto-zero loop opened, internal short removed, internal high inputs connected external pins. converter then integrates differential voltages between V+IN fixed time. This differential voltage within wide common-mode range; either supply. However, input signal return with respect converter power supply, tied analog common establish correct common-mode voltage. this phase, polarity integrated signal determined.
TC7116 TC7116A TC7117 TC7117A
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
4049
TC7116 TC7116A TC7117 TC7117A COMMON
Figure Using External Reference TC7116 TC7116A
TC9491CZM 1.2V
TEST
DECIMAL POINT BACKPLANE
Figure Simple Inverter Fixed Decimal Point DECIMAL POINTS
tions, integrator swing reduced less than recommended full-scale swing with little loss accuracy. integrator output swing within 0.3V either supply without loss linearity.
Analog Common
This included primarily common-mode voltage battery operation (TC7116/TC7116A) system where input signals floating with respect power supply. analog common sets voltage approximately 2.8V more negative than positive supply. This selected give minimum end-of-life battery voltage about However, analog common some attributes reference voltage. When total supply voltage large enough cause zener regulate (>7V), analog common voltage will have voltage coefficient (0.001%/ output impedance (15), temperature coefficient less than ppm/°C, typically, maximum. TC7116/TC7117 temperature coefficients typically ppm/°C. external reference used, necessary, shown Figure Analog common also used return during auto- zero deintegrate. different from analog common, common-mode voltage exists system taken care excellent CMRR converter. However, some applications, will fixed, known voltage (power supply common instance). this application, analog common should tied same point, thus removing common-mode voltage from converter. same holds true reference voltage; conveniently referenced analog common, should This removes common-mode voltage from reference system. Within analog common tied N-channel that sink 30mA more current hold voltage below positive supply (when load trying
TC7116 TC7116A
DECIMAL POINT SELECT
4030 TEST
Figure Exclusive "OR" Gate Decimal Point Drive
TC7116/TC7116A TC7117/TC7117A
CRYSTAL
COUNTER
NETWORK TEST TC7116/TC7116A GROUND TC7117/TC7117A Figure Clock Circuits
pull analog common line positive). However, there only 10µA source current, analog common easily tied more negative voltage, thus overriding internal reference.
TEST
TEST serves functions. TC7117/ TC7117A, coupled internally-generated digital supply through resistor. Thus, used
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
voltage switched. frequency clock frequency 800. readings second, this 60-Hz square wave with nominal amplitude segments driven same frequency amplitude, inphase with when OFF, out-of-phase when cases, negligible voltage exists across segments. Figure digital section TC7117/TC7117A. identical TC7116/TC7116A, except that regulated supply drive have been eliminated, segment drive typically 1000's output (pin sinks current from segments, 16-mA drive capability. TC7117/TC7117A designed drive common anode displays. both devices, polarity indication analog inputs. reversed, this indication reversed also, desired.
negative supply externally-generated segment drivers, such decimal points other presentation user want include LCD. (Figures show such application.) more than load should applied. second function "lamp test." When TEST pulled HIGH V+), segments will turned display should read -1888. TEST will sink about under these conditions.
DIGITAL SECTION
Figures show digital section TC7116/ TC7116A TC7117/TC7117A, respectively. TC7116/TC7116A (Figure internal digital ground generated from zener diode large P-channel source follower. This supply made stiff absorb relative large capacitive currents when backplane (BP)
TC7116 TC7116A BACKPLANE
PHASE DRIVER TYPICAL SEGMENT OUTPUT SEGMENT OUTPUT LATCH 7-SEGMENT DECODE 7-SEGMENT DECODE
7-SEGMENT DECODE
INTERNAL DIGITAL GROUND THOUSANDS HUNDREDS TENS UNITS
SWITCH DRIVERS FROM COMPARATOR OUTPUT CLOCK LOGIC CONTROL INTERNAL DIGITAL GROUND HLDR 6.2V
TEST
Figure TC7116/TC7116A Digital Section
TC7116 TC7116A TC7117 TC7117A
System Timing
clocking method used TC7116/TC7116A TC7117/TC7117A shown Figure Three clocking methods used: external oscillator connected crystal between pins network using three pins. oscillator frequency before clocks decade counters. then further divided form three convert-cycle phases: signal integrate (1000 counts), reference deintegrate 2000 counts), auto-zero (1000 3000 counts). signals less than full scale, auto-zero gets unused portion reference deintegrate. This makes complete measure cycle 4000 (16,000 clock pulses) independent input voltage. readings second, oscillator frequency 48kHz would used.
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
achieve maximum rejection 60-Hz pickup, signal-integrate cycle should multiple Oscillator frequencies 240kHz, kHz, 80kHz, 60kHz, kHz, 40kHz, etc. should selected. 50Hz rejection, oscillator frequencies 200kHz, kHz, 66-2/3kHz, kHz, 40kHz, etc. would suitable. Note that 40kHz (2.5 readings second) will reject both 50Hz 60Hz.
HOLD Reading Input
When HLDR logic HIGH latch will updated. Analog-to-digital conversions will continue will updated until HLDR returned LOW. continuously update display, connect test (TC7116/TC7116A) ground (TC7117/TC7117A), disconnect. This input CMOS compatible with typical resistance TEST (TC7116/TC7116A) ground (TC7117/TC7117A).
TC7117 TC7117A
TYPICAL SEGMENT OUTPUT SEGMENT LATCH 7-SEGMENT DECODE 7-SEGMENT DECODE
7-SEGMENT DECODE
DIGITAL GROUND
THOUSANDS
HUNDREDS
TENS
UNITS
SWITCH DRIVERS FROM COMPARATOR OUTPUT CLOCK CONTROL LOGIC
TEST
HLDR
DIGITAL
Figure TC7117/TC7117A Digital Section
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
Reference Voltage
generate full-scale output (2000 counts), analog input requirement VREF. Thus, 200mV scale, VREF should equal 100mV respectively. many applications, where connected transducer, scale factor exists between input voltage digital reading. instance, measuring system designer might like have full-scale reading when voltage from transducer 700mV. Instead dividing input down designer should input voltage directly select VREF 350mV. Suitable values integrating resistor capacitor would 120k 0.22µF. This makes system slightly quieter also avoids divider network input. TC7117/TC7117A, with supplies, accept input signals ±4V. Another advantage this system when digital reading zero desired Temperature weighing systems with variable tare examples. This offset reading conveniently generated connecting voltage transducer between analog common, variable fixed) offset voltage between analog com-
COMPONENT VALUE SELECTION Auto-Zero Capacitor
size auto-zero capacitor some influence system noise. 200mV full scale, where noise very important, 0.47µF capacitor recommended. scale, 0.047µF capacitor increases speed recovery from overload adequate noise this scale.
Reference Capacitor
capacitor acceptable most applications. However, where large common-mode voltage exists (i.e., analog common), 200-mV scale used, larger value required prevent roll-over error. Generally, will hold roll-over error count this instance.
Integrating Capacitor
integrating capacitor should selected give maximum voltage swing that ensures tolerance buildup will saturate integrator swing (approximately 0.3V from either supply). TC7116/TC7116A TC7117/ TC7117A, when analog common used reference, nominal full- scale integrator swing acceptable. TC7117/TC7117A, with supplies analog common tied supply ground, ±3.5V swing nominal. readings second clock), nominal values CINT 0.22µ1F 0.10µF, respectively. different oscillator frequencies used, these values should changed inverse proportion maintain output swing. integrating capacitor must have dielectric absorption prevent roll-over errors. Polypropylene capacitors recommended this application.
TC7117/TC7117A POWER SUPPLIES
TC7117/TC7117A designed operate from supplies. However, negative supply available, generated with TC7660 DC-to-DC converter capacitors. Figure shows this application. selected applications, negative supply required. conditions using single supply are: input signal referenced center common-mode range converter. signal less than ±1.5V. external reference used.
DRIVE TC7117 TC7117A TC7660 Figure Negative Power Supply Generation With TC7660 (-5V) TC04
Integrating Resistor
Both buffer amplifier integrator have class output stage with 100µA quiescent current. They supply 20µA drive current with negligible nonlinearity. integrating resistor should large enough remain this very linear region over input voltage range, small enough that undue leakage requirements placed board. full scale, near optimum and, similarly, 200mV full scale.
Oscillator Components
frequency ranges, 100k resistor recommended; capacitor selected from equation: clock readings second), 100pF.
TC7116 TC7116A TC7117 TC7117A
TYPICAL APPLICATIONS
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A
VREF 0.22
LOGIC
LOGIC
0.01 0.47
TC7116 TC7116A
DISPLAY BACKPLANE
CD4023 74C10 CD4077 OVERRANGE UNDERRANGE
Figure TC7116/TC7116A Using Internal Reference (200 Full Scale, Readings Second (RPS)
Figure Circuit Developing Underrange Overrange Signals from TC7116/TC7116A Outputs
TC7117 TC7117A
VREF
TC7117 TC7117A
TC9491CZM VREF
1.2V
0.01
0.47 0.22
0.01
0.47 0.22
DISPLAY
DISPLAY
Figure TC7117/TC7117A Internal Reference (200 Full Scale, RPS, Tied Single-Ended Inputs.)
Figure TC7117/TC7117A With 1.2V External Band-Gap Reference (VIN Tied Common)
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
TC7116 TC7116A TC7117 TC7117A
VREF 0.22
TC7117 TC7117A
0.01 0.047
DISPLAY
VREF
1.2V 0.01 0.47 0.22
TC9491CZM
DISPLAY
Figure Recommended Component Values Full Scale (TC7116/TC7116A TC7117/TC7117A)
Figure TC7117/TC7117A Operated from Single Supply External Reference Must Used This Application.)
APPLICATIONS INFORMATION
TC7117/TC7117A sink display current, causing heat build package. internal voltage reference used, changing chip temperature cause display change reading. reducing common anode voltage, TC7117/TC7117A package power dissipation reduced. Figure curve-tracer display showing relationship between output current output voltage typical TC7117CPL/TC7117ACPL devices. Since typical 1.8V across common anode connected +5V, TC7117/TC7117A output 3.2V (Point Figure 17). Maximum power dissipation 8.1mA 3.2V segments However, notice that once TC7117/TC7117A's output voltage above current essentially constant output voltage increases. Reducing output voltage 0.7V (Point Figure results current, only reduction. Maximum power dissipation only 7.7mA 2.5V 462mW, reduction 26%. output voltage reduction (Point reduces current (7.3 mA), power dissipation (7.3 2.2V 385mW). Reduced power dissipation very easy obtain. Figure shows ways: Either 5.1, 1/4W resistor, diode placed series with display (but series with TC7117/TC7117A). resistor reduces TC7117/TC7117A's output voltage (when segments Point Figure When segments turn off, output voltage will increase. diode, however, will result relatively steady output voltage, around Point addition limiting maximum power dissipation, resistor reduces change power dissipation display changes. effect caused fact that, fewer segments each output drops more voltage current. best case segments "111" display) worst case "1888" display), resistor circuit will change about 230mW, while circuit without resistor will change about 470mW. Therefore, resistor will reduce effect display dissipation reference voltage drift about 50%. change brightness caused resistor almost unnoticeable more segments turn off. display brightness remaining steady very important designer, diode used instead resistor.
TC7116 TC7116A TC7117 TC7117A
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
0.47
0.01
0.22 DISPLAY
TC7117 TC7117A
DISPLAY 1.5, 1/4W 1N4001
Figure TC7117/TC7117A Output Current Output Voltage
Figure Diode Resistor Limits Package Power Dissipation
PACKAGE DIMENSIONS 40-Pin PDIP
.555 (14.10) .530 (13.46)
2.065 (52.45) 2.035 (51.49)
.610 (15.49) .590 (14.99)
.200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20) .700 (17.78) .610 (15.50) .022 (0.56) .015 (0.38) MIN.
.110 (2.79) .090 (2.29)
.070 (1.78) .045 (1.14)
Dimensions: inches (mm)
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
TC7116 TC7116A TC7117 TC7117A
PACKAGE DIMENSIONS (Cont.) 40-Pin CerDIP
.540 (13.72) .510 (12.95)
.098 (2.49) MAX. 2.070 (52.58) 2.030 (51.56) .210 (5.33) .170 (4.32) .200 (5.08) .125 (3.18)
.030 (0.76) MIN. .620 (15.75) .590 (15.00) .060 (1.52) .020 (0.51) .015 (0.38) .008 (0.20) .700 (17.78) .620 (15.75)
.150 (3.81) MIN.
3°MIN.
.110 (2.79) .090 (2.29)
.065 (1.65) .045 (1.14)
.020 (0.51) .016 (0.41)
40-Pin Plastic
.555 (14.10) .530 (13.46)
2.065 (52.45) 2.035 (51.49)
.610 (15.49) .590 (14.99)
.200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20) .700 (17.78) .610 (15.50) .022 (0.56) .015 (0.38)
Dimensions: inches (mm)
MIN.
.110 (2.79) .090 (2.29)
.070 (1.78) .045 (1.14)
TC7116 TC7116A TC7117 TC7117A
PACKAGE DIMENSIONS (Cont.) 44-Pin PLCC
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
.050 (1.27) TYP. .695 (17.65) .685 (17.40) .656 (16.66) .650 (16.51)
.021 (0.53) .013 (0.33) .630 (16.00) .590 (15.00) .032 (0.81) .026 (0.66)
.656 (16.66) .650 (16.51) .695 (17.65) .650 (17.40) .180 (4.57) .165 (4.19)
.020 (0.51) MIN. .120 (3.05) .090 (2.29)
44-Pin PQFP
MAX. .009 (0.23) .005 (0.13)
.018 (0.45) .012 (0.30)
.041 (1.03) .026 (0.65)
.398 (10.10) .390 (9.90) .557 (14.15) .537 (13.65)
.031 (.080) TYP.
.398 (10.10) .390 (9.90) .557 (14.15) .537 (13.65)
.010 (0.25) TYP. .083 (2.10) .075 (1.90) .096 (2.45) MAX.
Dimensions: inches (mm)
Sales Offices
TelCom Semiconductor 1300 Terra Bella Avenue P.O. 7267 Mountain View, 94039-7267 TEL: 650-968-9241 FAX: 650-967-1590 E-Mail: liter@c2smtp.telcom-semi.com TelCom Semiconductor Austin Product Center 9101 Burnet Suite Austin, 78758 TEL: 512-873-7100 FAX: 512-873-8236 TelCom Semiconductor H.K. Ltd. Chuk Street, Ground Floor Kong, Kowloon Hong Kong TEL: 852-2324-0122 FAX: 852-2354-9957
Printed U.S.A.

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