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Direct Replacements OP27 OP37 Series Features OP27A, OP27C, OP37A, OP3


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OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
Direct Replacements OP27 OP37 Series Features OP27A, OP27C, OP37A, OP37C: Maximum Equivalent Input Noise Voltage: nV/Hz nV/Hz Very Peak-to-Peak Noise Voltage Input Offset Voltage High Voltage Amplification V/µV Feature OP37 Series: Minimum Slew Rate V/µs
PACKAGE (TOP VIEW)
TRIM
TRIM
PACKAGE (TOP VIEW)
description
OP27 OP37 operational amplifiers combine outstanding noise performance with excellent precision high-speed specifications. wideband noise only nV/Hz with noise corner noise maintained low-frequency applications. outstanding characteristics OP27 OP37 make these devices excellent choices low-noise amplifier applications requiring precision performance reliability. Additionally, OP37 free latch-up high-gain, large-capacitive-feedback configurations. OP27 series compensated unity gain. OP37 series decompensated increased bandwidth slew rate stable down gain OP27A, OP27C, OP37A, OP37C characterized operation over full military temperature range 55°C 125°C. OP27E, OP27G, OP37E, OP37G characterized operation from 25°C 85°C.
VIOTRIM
internal connection
symbol
TRIM numbers packages.
AVAILABLE OPTIONS VIOmax 25°C 25°C 85°C 55°C 125°C STABLE GAIN PACKAGE CERAMIC (JG) OP27AJG OP37AJG OP27CJG OP37CJG CHIP CARRIER (FK) OP27AFK OP37AFK PLASTIC OP27EP OP37EP OP27GP OP37GP
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
Copyright 1994, Texas Instruments Incorporated
POST OFFICE 655303 POST OFFICE 1443
DALLAS, TEXAS 75265 HOUSTON, TEXAS 77251-1443
VIOTRIM
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED OPERATIONAL AMPLIFIER
TRIM
TRIM
OP27 OP37
schematic
POST OFFICE 1443 HOUSTON, TEXAS 77251-1443 POST OFFICE 655303 DALLAS, TEXAS 75265
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, (see Note Supply voltage, (see Note Input voltage, Duration output short circuit unlimited Differential input current (see Note Continuous power dissipation Dissipation Rating Table Operating free-air temperature range: OP27A, OP27C, OP37A, OP37C 55°C 125°C OP27E, OP27G, OP37E, OP37G 25°C 85°C Storage temperature range 65°C 150°C Lead temperature (1/16 inch) from case seconds: package 300°C Lead temperature (1/16 inch) from case seconds package 260°C
NOTES: voltage values with respect midpoint between unless otherwise noted. inputs protected back-to-back diodes. Current-limiting resistors used order achieve noise. Excessive input current will flow differential input voltage excess approximately applied between inputs unless some limiting resistance used. DISSIPATION RATING TABLE PACKAGE 25°C POWER RATING 1050 1375 1000 DERATING FACTOR ABOVE 25°C mW/°C 11.0 mW/°C mW/°C 85°C POWER RATING 125°C POWER RATING
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
recommended operating conditions
OP27A, OP37A Supply voltage, Supply voltage, Common-mode Common mode input voltage voltage, Operating free-air temperature, 25°C 55°C 125°C 10.3 OP27C, OP37C 10.2 UNIT
electrical characteristics specified free-air temperature, (unless otherwise noted)
PARAMETER Input offset voltage Average temperature coefficient input offset voltage Long-term drift input offset voltage Input offset current Input bias current Note 25°C Full range 25°C Full range 25°C VICR Common-mode input voltage range Full range Large-signal Large signal differential voltage amplification Full range 10.3 10.3 13.8 11.5 11.5 1000 Full range 25°C 25°C Full range 25°C Full range 1800 1500 TEST CONDITIONS Note 25°C Full range Full range OP27A, OP37A OP27C, OP37C UNIT µV/°C µV/mo
10.5 10.5
11.5 13.5 11.5 10.5 1500 1500 V/mV
Peak output voltage swing
VCC±
ri(CM) CMRR kSVR
Common-mode input resistance Output resistance Common-mode rejection ratio Supply voltage rejection ratio
Full range 55°C 125°C. NOTES: Input offset voltage measurements performed automatic test equipment approximately seconds after applying power. Long-term drift input offset voltage refers average trend line offset voltage versus time over extended periods after first days operation. Excluding initial hour operation, changes during first days typically (see Figure
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
recommended operating conditions
Supply voltage, Supply voltage, Common-mode Common mode input voltage voltage, Operating free-air temperature, 25°C 55°C 125°C 10.5 UNIT
electrical characteristics specified free-air temperature, (unless otherwise noted)
PARAMETER Input offset voltage Average temperature coefficient input offset voltage Long-term drift input offset voltage Input offset current Input bias current Note 25°C Full range 25°C Full range 25°C VICR Common-mode input voltage range Full range Peak output voltage swing Large-signal Large signal differential voltage amplification VCC± ri(CM) CMRR kSVR Common-mode input resistance Output resistance Common-mode rejection ratio Supply voltage rejection ratio 25°C 25°C Full range 25°C Full range Full range 10.3 10.3 13.8 11.5 11.5 1000 Full range 1800 1500 TEST CONDITIONS Note 25°C Full range Full range OP27E, OP37E OP27G, OP37G UNIT µV/°C µV/mo
10.5 10.5
11.5 13.5 11.5 10.5 1500 1500 V/mV
Full range 25°C 85°C. NOTES: Input offset voltage measurements performed automatic test equipment approximately seconds after applying power. Long-term drift input offset voltage refers average trend line offset voltage versus time over extended periods after first days operation. Excluding initial hour operation, changes during first days typically (see Figure
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
OP27 operating characteristics over operating free-air temperature range, VCC±
PARAMETER VN(PP) Slew rate Peak-to-peak equivalent input noise voltage TEST CONDITIONS Figure Equivalent input noise voltage kHz, Equivalent input noise current Gain-bandwidth product kHz, Figure Figure Figure OP27A, OP27E 0.08 0.18 OP27C, OP27G 0.09 pA/Hz 0.25 nV/Hz UNIT V/µs
OP37 operating characteristics over operating free-air temperature range, VCC±
PARAMETER VN(PP) Slew rate Peak-to-peak equivalent input noise voltage Equivalent input noise voltage TEST CONDITIONS Figure kHz, Equivalent input noise current kHz, Gain-bandwidth Gain bandwidth product Figure Figure Figure OP37A, OP37E 0.08 0.18 OP37C, OP37G 0.09 pA/Hz 0.25 nV/Hz UNIT V/µs
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS Table Graphs
FIGURE VICR VO(PP) CMRR kSVR Input offset voltage Change input offset voltage Input offset current Input bias current Common-mode input voltage range Maximum peak output voltage Maximum peak-to-peak output voltage Differential voltage amplification Common-mode rejection ratio Supply voltage rejection ratio Slew rate Phase margin Phase shift Temperature Time after power Time (long-term drift) Temperature Temperature Supply voltage Load resistance Frequency Supply voltage Load resistance Frequency Frequency Frequency Temperature Supply voltage Load resistance Temperature Frequency Bandwidth Source resistance Supply voltage Temperature Frequency Frequency Temperature Time Supply voltage Small signal Large signal
Equivalent input noise voltage
Equivalent input noise current Gain-bandwidth product Short-circuit output current Supply current Pulse response
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
INPUT OFFSET VOLTAGE REPRESENTATIVE INDIVIDUAL UNITS FREE-AIR TEMPERATURE
Change Input Offset Voltage Input Offset Voltage OP27E/37E OP27G/37G OP27C/37C OP27A/37A OP27A/37A OP27C/37C OP27CP/GP OP37CP/GP 25°C
WARM-UP CHANGE INPUT OFFSET VOLTAGE ELAPSED TIME
OP27AP/EP OP37AP/EP
Time After Power minutes
Free-Air Temperature
Figure
Figure
LONG-TERM DRIFT INPUT OFFSET VOLTAGE REPRESENTATIVE INDIVIDUAL UNITS
Change Input Offset Voltage
0.2-µV/mo Trend Line
0.2-µV/mo Trend Line Time months
Figure
Data temperatures below 25°C above 85°C applicable OP27A, OP27C, OP37A, OP37C only.
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
INPUT OFFSET CURRENT FREE-AIR TEMPERATURE
Input Offset Current Input Bias Current
INPUT BIAS CURRENT FREE-AIR TEMPERATURE
OP27C/G OP37C/G OP27A/E OP37A/E
OP27C/G OP37C/G
OP27A/E OP37A/E
Free-Air Temperature
Free-Air Temperature
Figure
COMMON-MODE INPUT VOLTAGE RANGE LIMITS SUPPLY VOLTAGE
Maximum Peak Output Voltage 55°C 55°C 125°C 25°C 25°C 125°C Positive Swing
Figure
MAXIMUM PEAK OUTPUT VOLTAGE LOAD RESISTANCE
25°C
VICR VICR Common-Mode Input Voltage Range Limits
Negative Swing
Load Resistance
Supply Voltage
Figure
Figure
Data temperatures below 25°C above 85°C applicable OP27A, OP27C, OP37A, OP37C only.
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
OP27 OP37
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE FREQUENCY
VVOPP Maximum Peak-to-Peak Output Voltage O(PP) 25°C VVOPP Maximum Peak-to-Peak Output Voltage O(PP)
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE FREQUENCY
25°C
Frequency
Figure
OP27A, OP27E, OP37A, OP37E
LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION TOTAL SUPPLY VOLTAGE
Differential Voltage Amplification V/mV 2500 25°C 2000 1500 Differential Voltage Amplification V/mV 2400 2200 2000 1800 1600 1400 1200 1000
1000
Total Supply Voltage
Figure
2-10
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
Frequency
Figure
OP27A, OP27E, OP37A, OP37E
LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION LOAD RESISTANCE
25°C
Load Resistance
Figure
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
OP27 OP37
LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION PHASE SHIFT FREQUENCY
Differential Voltage Amplification Differential Voltage Amplification 100° 25°C 120° Phase Shift 140° 160° 180° 200° 220°
LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION PHASE SHIFT FREQUENCY
Phase Shift 160° 180° 200° 220° 25°C 100° 120° 140° Phase Shift
Phase Shift
Frequency
Frequency
Figure
OP27A, OP27E, OP37A, OP37E
Figure
OP27A, OP27E, OP37A, OP37E
LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION FREQUENCY
Differential Voltage Amplification OP37A/E CMRR Common-Mode Rejection Ratio 25°C
COMMON-MODE REJECTION RATIO FREQUENCY
25°C
OP37A/E OP27A/E
OP27A/E
Frequency
Frenquency
Figure
Figure
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
2-11
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
SUPPLY VOLTAGE REJECTION RATIO FREQUENCY
kSVR Supply Voltage Rejection Ratio Positive Supply OP27 (AVD Free Temperature 25°C Slew Rate
SLEW RATE FREE-AIR TEMPERATURE
OP37 (AVD
Negative Supply
Frequency
Figure
OP37
Figure
OP37
SLEW RATE SUPPLY VOLTAGE
25°C Slew Rate Rise
SLEW RATE LOAD RESISTANCE
VO(PP) 25°C
Fall Slew Rate
Supply Voltage
Frequency
Figure
Figure
Data temperatures below 25°C above 85°C applicable OP27A, OP27C, OP37A, OP37C only.
2-12
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
OP27 OP37
PHASE MARGIN GAIN-BANDWIDTH PRODUCT FREE-AIR TEMPERATURE
Phase Margin 10.6 Gain-Bandwidth Product 10.2 kHz) Phase Margin
PHASE MARGIN GAIN-BANDWIDTH PRODUCT FREE-AIR TEMPERATURE
Gain-Bandwidth Product kHz)
Free-Air Temperature
Figure
EQUIVALENT INPUT NOISE VOLTAGE BANDWIDTH
Equivalent Input Noise Voltage 25°C
Total Equivalent Input Noise Voltage
0.01
Bandwidth (0.1 frequency indicated)
Figure
Data temperatures below 25°C above 85°C applicable OP27A, OP27C, OP37A, OP37C only.
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
Free-Air Temperature
Figure
TOTAL EQUIVALENT INPUT NOISE VOLTAGE SOURCE RESISTANCE
25°C
Resistor Noise Only
Source Resistance
Figure
2-13
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
OP27A, OP27E, OP37A, OP37E OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE VOLTAGE TOTAL SUPPLY VOLTAGE
Equivalent Input Noise Voltage Equivalent Input Noise Voltage 25°C
EQUIVALENT INPUT NOISE VOLTAGE FREE-AIR TEMPERATURE
Total Supply Voltage
Free-Air Temperature
Figure
OP27A, OP27E, OP37A, OP37E
Figure
EQUIVALENT INPUT NOISE VOLTAGE FREQUENCY
Equivalent Input Noise Voltage Equivalent Input Noise Current Corner 25°C
EQUIVALENT INPUT NOISE CURRENT FREQUENCY
25°C
Corner
1000 Frequency
Frequency
Figure
Figure
Data temperatures below 25°C above 85°C applicable OP27A, OP27C, OP37A, OP37C only.
2-14
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
SHORT-CIRCUIT OUTPUT CURRENT ELAPSED TIME
IIOS Short-Circuit Output Current 25°C IICC Supply Current
SUPPLY CURRENT TOTAL SUPPLY VOLTAGE
125°C
Time minutes
Figure
OP27
VOLTAGE FOLLOWER SMALL-SIGNAL PULSE RESPONSE
Output Voltage Time 25°C Output Voltage
Figure
Data temperatures below 25°C above 85°C applicable OP27A, OP27C, OP37A, OP37C only.
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
55°C
25°C
Total Supply Voltage
Figure
OP27
VOLTAGE FOLLOWER LARGE-SIGNAL PULSE RESPONSE
25°C Time
Figure
2-15
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
TYPICAL CHARACTERISTICS
OP37 OP37
VOLTAGE-FOLLOWER SMALL-SIGNAL PULSE RESPONSE
Output Voltage Time 25°C Output Voltage
VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE
25°C Time
Figure
Figure
APPLICATION INFORMATION general
OP27 OP37 series devices inserted directly onto OP07, OP05, µA725, SE5534 sockets with without removing external compensation nulling components. addition, OP27 OP37 fitted µA741 sockets removing modifying external nulling components.
noise testing
Figure shows test circuit 0.1-Hz 10-Hz peak-to-peak noise measurement OP27 OP37. frequency response this noise tester indicates that 0.1-Hz corner defined only zero. Because time limit acts additional zero eliminate noise contributions from frequency band below test time measure 0.1-Hz 10-Hz noise should exceed seconds. Measuring typical 80-nV peak-to-peak noise performance OP27 OP37 requires following special test precautions: device should warmed least five minutes. operational amplifier warms offset voltage typically changes chip temperature increasing from 10°C 20°C starting from moment power supplies turned 10-s measurement interval, these temperature-induced effects easily exceed tens nanovolts. similar reasons, device should well shielded from currents eliminate possibility thermoelectric effects excess nanovolts, which would invalidate measurements. Sudden motion vicinity device should avoided, produces feedthrough effect that increases observed noise.
2-16
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
APPLICATION INFORMATION
Differential Voltage Amplification 0.01
Frequency
OP27/OP37 Device Under Test Voltage Gain 50,000 LT1001 24.3
Oscilloscope
NOTE: capacitor values nonpolarized capacitors only.
Figure 0.1-Hz 10-Hz Peak-to-Peak Noise Test Circuit Frequency Response
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
2-17
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
APPLICATION INFORMATION
When measuring noise large number units, noise-voltage density test recommended. 10-Hz noise-voltage density measurement correlates well with 0.1-Hz 10-Hz peak-to-peak noise reading since both results determined white noise location corner frequency. Figure shows circuit measuring current noise formula calculating current noise.
[Vno2 (130 nV)2]1/2
Figure Current Noise Test Circuit Formula
offset voltage adjustment
input offset voltage temperature coefficient OP27 OP37 permanently trimmed level wafer testing. However, further adjustment necessary, using 10-k nulling potentiometer shown Figure does degrade temperature coefficient VIO. Trimming value other than zero creates VIO/300 µV/°C. example, adjusted change µV/°C. adjustment range with 10-k potentiometer approximately smaller adjustment range needed, sensitivity resolution nulling improved using smaller potentiometer conjunction with fixed resistors. example Figure approximate null range
Input Input Output Output
Figure Standard Input Offset Voltage Adjustment
Figure Input Offset Voltage Adjustment With Improved Sensitivity
offset voltage drift
Unless proper care exercised, thermoelectric effects caused temperature gradients across dissimilar metals contacts input terminals exceed inherent temperature coefficient amplifier. currents should minimized, package leads should short, input leads should close together same temperature.
2-18
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
APPLICATION INFORMATION offset voltage drift (continued)
circuit shown Figure measures offset voltage. This circuit also used burn-in configuration OP27 OP37 with supply voltage increased 100.
1000
NOTE Resistors must have thermoelectric potential.
Figure Test Circuit Offset Voltage Offset Voltage Temperature Coefficient
unity gain buffer applications
resulting output waveform, when input driven with fast large-signal pulse shown pulsed-operation diagram Figure
Output OP27
V/µs
Figure Pulsed Operation During initial (fast-feedthrough-like) portion output waveform, input protection diodes effectively short output input, current, limited only output short-circuit protection, drawn signal generator. When output capable handling current requirements (load current amplifier stays active mode, smooth transition occurs. When pole created with amplifier's input capacitance, creating additional phase shift reducing phase margin. small capacitor parallel with eliminates this problem.
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
2-19
OP27A, OP27C, OP27E, OP27G OP37A, OP37C, OP37E, OP37G LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
APPLICATION INFORMATION
Noise Voltage
Time seconds Type Thermocouples µV/°C Typical Multiplexing Switches Gate Drive Cold-Junction Circuitry 10,000 OP27 0.05
Output
High-Quality Single-Point Ground
NOTE channels multiplexed second output required settle accuracy, amplifier's bandwidth cannot limited less than peak-to-peak noise contribution OP27 will still only 0.11 which equivalent error only 0.02°C.
Figure Low-Noise, Multiplexed Thermocouple Amplifier 0.1-Hz 10-Hz Peak-to-Peak Noise Voltage
2-20
POST OFFICE 655303 DALLAS, TEXAS 75265 POST OFFICE 1443 HOUSTON, TEXAS 77251-1443
IMPORTANT NOTICE Texas Instruments subsidiaries (TI) reserve right make changes their products discontinue product service without notice, advise customers obtain latest version relevant information verify, before placing orders, that information being relied current complete. products sold subject terms conditions sale supplied time order acknowledgement, including those pertaining warranty, patent infringement, limitation liability. warrants performance semiconductor products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques utilized extent deems necessary support this warranty. Specific testing parameters each device necessarily performed, except those mandated government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS INVOLVE POTENTIAL RISKS DEATH, PERSONAL INJURY, SEVERE PROPERTY ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). SEMICONDUCTOR PRODUCTS DESIGNED, AUTHORIZED, WARRANTED SUITABLE LIFE-SUPPORT DEVICES SYSTEMS OTHER CRITICAL APPLICATIONS. INCLUSION PRODUCTS SUCH APPLICATIONS UNDERSTOOD FULLY CUSTOMER'S RISK. order minimize risks associated with customer's applications, adequate design operating safeguards must provided customer minimize inherent procedural hazards. assumes liability applications assistance customer product design. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right covering relating combination, machine, process which such semiconductor products services might used. TI's publication information regarding third party's products services does constitute TI's approval, warranty endorsement thereof.
Copyright 1998, Texas Instruments Incorporated

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