Amplifier Receiver (AFC Supported) Description CXA3176N current c
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CXA3176N
Amplifier Receiver (AFC Supported)
Description CXA3176N current consumption amplifier which employs newest bipolar process. suitable receiver using AFC. Features current consumption 0.95 (typ. VCC1=1.4 0.15 (typ. VCC2=3.0 Small package 24-pin SSOP Second mixer oscillator Needless decoupling capacitor Reference power supply operational amplifier RSSI function (dynamic range input, standard function Maximum input frequency Applications receiver supporting Double conversion receiver Structure Bipolar silicon monolithic Block Diagram Configuration
CONT CHARGE AMP_OUT AUDIO
SSOP (Plastic)
Absolute Maximum Ratings Supply voltage Operating temperature Topr Storage temperature Tstg Allowable power dissipation Operating Condition Supply voltage
+150
VCC1 VCC2
VCC2
B.S.
22dB
RSSI IF_LIM QUAD_DET FILTER
VCC1
AFC_C
QUAD
Sony reserves right change products specifications without prior notice. This information does convey license implication otherwise under patents other right. Application circuits shown, any, typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits.
RSSI_C
RSSI
E96X14A8Z
CXA3176N
Description Symbol voltage
Equivalent circuit
Description
1.5k
Connects external parts crystal oscillator circuit. capacitor crystal oscillator connected these pins VCC.
Mixer output. Connect ceramic filter between this
VCC1
1.5k 1.5k
Power supply
limiter amplifier input.
output.
AFC_C
Connects capacitor that becomes time constant.
CXA3176N
Symbol
voltage
Equivalent circuit
Description
QUAD
Connects phase shifter detector circuit.
Connects capacitor that determines cut-off.
RSSI_C
Connects capacitor that determines RSSI rising characteristics.
RSSI
RSSI circuit output.
VCC2/2
Output detector output amplification circuit.
connected.
AUDIO
Input detector output amplification circuit circuit. filter circuit output connected.
CXA3176N
Symbol
voltage
Equivalent circuit
Description
B.S.
140k
Controls battery saving. Setting this suspends operation (Applied voltage range -0.5 +7.0
CHARGE
100k
Controls time constant circuit. this high make short time constant. (Applied voltage range: -0.5 +7.0 Power supply
VCC2
comparator output. open collectors. (Applied voltage range: -0.5 +7.0
CONT
Output internal constant-voltage source amplifier. Connect base transistor. (Current capacity
Constant-voltage source output. Controlled maintain
4.16k 4.16k
Ground
Mixer input.
CXA3176N
Electrical Characteristics (VCC1=1.4 VCC2=3 Ta=25 FS=21.7 MHz, FMOD=4 kHz, FDEV=4.5 kHz, AMMOD=30 Item Current consumption1 Current consumption2 Current consumption rejection ratio output current output saturation voltage voltage operating voltage output leak current output saturation voltage Logic input voltage high level Logic input voltage level Limiting sensitivity RSSI output offset Mixer input resistance Mixer output resistance limiter input resistance Symbol ICC1 ICC2 ICCS AMRR IOUT VSATVB VREG VLVA ILLVA VSATLVA VTHBSV VTLBSV (LIM) VORSSI RINLIM ROUTMIX RINLIM VAMP Conditions Measurement circuit Measurement circuit Measurement circuit Measurement circuit Measurement circuit Measurement circuit Output current Measurement circuit V1=1.4 Measurement circuit Measurement circuit Measurement circuit Data filter fc=6.2 Measurement circuit Measurement circuit V2=1.0 V2=1.0 V2=0 Min. 0.92 1.00 V1=1.0 Typ. 0.95 0.15 0.97 1.05 -108 1.35 0.25 1.02 1.10 0.35 Unit
mVrms
CXA3176N
Electrical Characteristics Measurement Circuit
3.0V 120p 1000p
1.8µ
3.0V
1.0V
1.4V
1.4V 5.6k
1200p 1200p
1200p
Measurement circuit
Measurement circuit
100µA 0.5V
1.0V
100k
1.0V
1.4V
1.0V
Measurement circuit
Measurement circuit
50µA
1.0V
1.0V
1.4V
1.4V
100p
Measurement circuit
Measurement circuit
Application Circuit
VCC2 AMP_OUT RSSI
22dB
1.8µH
1000P
100k
120P
0.01µ
VB_REG
AUDIO
5.6K
XTAL
DISK
470P
CERAFIL
470P
470P
0.01µ
CXA3176N
Application circuits shown typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits infringement third party patent other right same.
100P
IF_LIM
QUAD_DET FILTER
RSSI
CXA3176N
Application Notes Power Supply CXA3176N, with built-in regulator, designed permit stable operation wide range supply voltage VCC1=1.1 VCC2=2.5 Decouple wiring (Pins close possible. Oscillator Input Oscillator input method Using Pins input self-excited oscillation signal through composition Colpitts type crystal oscillator circuit. Directly input local oscillation signal
Ceramic filter
Ceramic filter From local signal
Fig. Mixer mixer double-balance type. input pin. Input though suitable matching circuit. input impedance serves output mixer, load resistance incorporated. Filter filter connected between this mixer output limiter amplifier input should have following specifications. impedance Band width Changes according applications. Limiter Amplifier gain this limiter amplifier approximately Take notice following points making connection limiter amplifier input (Pin Wiring limiter amplifier input (Pin should short possible. limiter amplifier output appears QUAD (Pin wiring ceramic discriminator connected QUAD should short possible reduce interference with mixer output limiter amplifier input.
Wire short apart possible
short possible
Fig.
CXA3176N
Quick Charge order hasten rise time from when power turned CXA3176N features quick charge circuit. capacitance value connected should chosen such that voltage does vary much discharge during battery saving. Connect signal controlling quick charge circuit Setting this high enables quick charge mode, setting this enables steady-state reception mode. Quick charge used when power supply turned battery saving must high time. Connect when quick charge being used.
Timing Power supply (Pin Quick charge (Pin Battery saving (Pin active battery saving
Fig.
Detector detector quadrature type. perform phase shift, connect ceramic discriminator phase shifting capacitor quadrature detector incorporated. signal demodulated with detector will output AMP_OUT (Pin through internal LPF. CDBC450CX50 (MURATA MFG. CO., LTD.) ceramic discriminator recommended CXA3176N.
5.6k Ceramic discriminator CDBC450CX50
Fig.
CXA3176N
CONT Controls base bias external transistors. This goes high (open) when supply voltage becomes lower. Since output open collector, used directly drive CMOS device. setting voltage 1.05 (typ.), possesses hysteresis with respect supply voltage. hysteresis width (typ.). B.S. Operation CXA3176N halted setting this low. This connected directly CMOS device. current consumption battery saving less
B.S.
Fig. Control Pins function controls shown below. Symbol B.S. Battery saving Function mode control Input high operation Input Sleep
CHARGE charge speed control Quick charge Slow charge
Note) When each function controlled externally, state with asterisk Constant composition data filter ternary. first-stage cut-off 2C12R
second-stage cut-off 2RC13
C12, C13,
External capacitance shown Application Circuit internal resistance
Butterworse characteristic C12=C13=C14. approximately -10-
CXA3176N
current output type which outputs frequency deviation form current converts voltage. output current range approximately ±0.4 slow mode fast mode.
External parts curve voltage) Vref Vref Vout (AFC voltage)
V=it/C
receiver receiver
CXA3176N
Vref
CXA3176N Principle Diagram voltage continues change till value reaches Vref value. When these values equal, output current becomes voltage determined charge time. voltage output through amplifier. Vout=Vref+4 (V-Vref) Vout operating range (VCC-0.2) that should within this range. Also, voltage undefined with itself. voltage varies, example, shown below characteristics. voltage follows characteristics because this voltage independent slope curve. other words, CXA3176N operates according characteristics when characteristics have linearity with respect voltage characteristics controlled within range shown graph below.
(VCC-0.2)V
voltage
0.4V Input frequency
-11-
CXA3176N
Sensitivity Adjustment Method constants shown Application Circuit standard external parts. However, adjustment necessary depending conditions use, characteristics external parts, system circuit decoder connected etc. Adjust sensitivity according following procedures. matching When using matching circuit between system circuit CXA3176N, adjust trimmer obtain optimal sensitivity while monitoring AUDIO output. Local input level mixer circuit gain dependent local signal input level input level should high possible within range shown graph "Local input level Mixer gain characteristics". However, care should taken raising input level above will cause sensitivity drop. When creating local signal using internal oscillator circuit, oscillation level varies according external capacitances attached Pins characteristics used crystal. Therefore, sure adjust external capacitance values attached Pins according crystal characteristics.
have following range figure above. =5C2 ratio oscillation stabilizes approaches equality with oscillation level decreases values become larger, increases values become smaller. probe confirm local input level. constant (when CXA3176N used pager) data filter cut-off need changed depending characteristics connected decoder. Adjust capacitance values Pins while checking incoming sensitivity including decoder. capacitance values large, detector output waveform will deviate high data rates, causing sensitivity drop. Conversely, capacitance values small, will easily affected noise, causing sensitivity drop. Adjust capacitance values Pins that capacitance value described "12) Constant" becomes smaller. -12-
CXA3176N
CXA3176N uses correct frequency deviation. WHen frequency deviation amount large, correction takes time lower sensitivity. Adjust oscillator frequency local oscillator that center frequency signal input close possible.
CXA3176N Standard Board Description Outline This board contains external parts shown Application Circuit order evaluate CXA3176N operation Features following CXA3176N basic operations checked. Battery saving other mode switching RSSI output impedance because output buffer. Method Input CXA3176N supply voltage VCC1=1.4 VCC2=3 This operates with single power supply. CXA3176N uses 21.245 crystal. Input signal from this condition where IF=450 kHz. voltage undefined with itself because current output circuit employed AFC. evaluation, sure apply bias externally make loop. mode switches. Mode switch setting Mode switches provided locations board. Each basic operation confirmed switching these mode switches while referring board layout. table "11) Control Pins" mode switching. Device specification these specifications specifications. this evaluation board specification. Circuit diagram circuit diagram same Application Circuit these Specifications.
-13-
CXA3176N
[Board Layout]
VCC2
XTAL
DISK
3176 EVALUATION BOARD
[Mode Switch Pattern]
CERAFIL
Slow
Sleep
High CHARGE
Quick
High B.S.
Active
-14-
CXA3176N
List Standard Board Parts Value Part Remarks (Manufacture) Note
Resistor Capacitor 1000 0.01 TZ03P450FR169 (MURATA PRODUCTS) DD100 series temperature characteristics type (MURATA PRODUCTS) TRIMMER CAPACITOR (RIVER) series 1/8W
CERAMIC CAPACITOR series (high dielectric constant type)
RPE131F103Z50 (MURATA PRODUCTS) (SHIN-EI TUSHIN KOGYO CO., LTD.) (SHIN-EI TUSHIN KOGYO CO., LTD.)
MONOLITHIC CERAMIC CAPACITOR series
ELECTROLYTIC CAPACITOR series
Inductor EL0405 (TDK Products) series pitch (Lead Pitch)
Active Component 2SA1015 (TOSHIBA CORPORATION) Vceo -150
Crystal 21.245 XTAL NR-18BN (NIHON DEMPA KOGYO CO., LTD.)
Ceramic Filter CERAFIL CFWS450D (MURATA PRODUCTS)
Ceramic Discriminator DISC CDBC450CX50 -15- (MURATA PRODUCTS)
CXA3176N
Switch ATE1D-2M3-10 (FUJISOKU CORPORATION) AC/DC AC/DC ON-ON poles) Max. Min.
Connector HRM300-25 (HIROSE ELECTRIC CO., LTD.) CONNECTOR
test ST-1-3 (Mac eight) test LC-2-G (Mac eight) L=10
-16-
CXA3176N
Example Representative Characteristics
Current consumption characteristics ICC2 VCC1 1.4V)
ICC1 VCC2 3.0V) 0.13
0.12
Supply voltage Mixer input audio response RSSI characteristics VCC2 3.0V 21.7MHz VCC1 1.4V fDEV 4.5kHz fMOD 4kHz
ICC2 (Pin current (mA)
ICC1 (Pin current (mA)
Audio response (dB)
120P 1000P 1.8µ
21.25MHz 0dBm 0dB=630mVrms T=25°C
1000
RSSI
-120 -110 -100
input level (dBm) Local input level Mixer gain characteristics VCC1 1.4V VCC2 3.0V
Mixer gain (dB)
21.7MHz -60dBm 21.25MHz With filter load Mixer gain level difference between
Local input level (dBm)
-17-
RSSI output voltage (mV)
CXA3176N
Mixer input frequency Gain characteristics
Mixer gain (dB)
VCC2 3.0V VCC1 1.4V -60dBm -0.45) 0dBm input frequency (Hz) Mixer characteristics 3rd-order intercept point VCC1 1.4V VCC2 3.0V 21.7MHz 21.725MHz 21.75MHz 21.25MHz with filter load 0dBm 100M
output level (dBm)
input level (dBm) Cut-off characteristics audio filter VCC1 1.4V VCC2 3.0V
Response (dB)
Input frequency (Hz)
-18-
CXA3176N
curve characteristics
voltage (mV)
VCC1
4.7k
VCC1 1.4V VCC2 -40dBm
CDBC CX50 (MURATA MFG. CO., LTD)
input frequency (kHz) RSSI output voltage temperature chatacteristics 1000 75°C 25°C -20°C 25°C
voltage (mV)
120P 1000P 1.8µ 75°C VCC1 1.4V 21.7MHz
-20°C
VCC2 3.0V fDEV 4.5kHz fMOD 4kHz
21.25MHz -120 -110 -100
input level (dBm) output current characteristics
Fast mode
VCC1 1.4V VCC2 3.0V 215mV fixed (external power supply)
Slow (Pin current (µA)
-0.2
Slow mode
-0.4 -0.6 voltage (mV)
-19-
Fast (Pin current (µA)
CXA3176N
amplifier characteristics VCC2 3.0V VCC1 1.4V
voltage
voltage (mV) characteristics
1000
VCC2 3.0V
comparator output voltage
High
1050
1060
1070
1080
1090
1100
1110
voltage (mV)
-20-
CXA3176N
Package Outline
Unit
24PIN SSOP(PLASTIC)
1.25
0.13 0.65
0.05 0.15 0.02
DETAIL SOLDER
(0.15)
(0.22)
b=0.22 0.03
DETAIL PALLADIUM
NOTE: Dimension does include mold protrusion. DETAIL
PACKAGE STRUCTURE
PACKAGE MATERIAL EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g LEAD TREATMENT LEAD MATERIAL PACKAGE MASS
SONY CODE EIAJ CODE JEDEC CODE
SSOP-24P-L01 SSOP024-P-0056
NOTE PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
-21-
0.03 0.15 0.01
b=0.22 0.05
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