High Common-Mode Voltage, Programmable Gain Difference Amplifier AD628
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1 High Common-Mode Voltage, Programmable Gain Difference Amplifier AD628 FEATURES FUNCTIONAL BLOCK DIAGRAM High common-mode input voltage range ±20 V at VS = ±5 V Gain range 0. to 00 Operating temperature range: 40 C to +85 C Supply voltage range Dual supply: ±2.25 V to ±8 V Single supply: 4.5 V to 36 V Excellent ac and dc performance Offset temperature stability RTI: 0 μv/ C maximum Offset: ±.5 V mv maximum CMRR RTI: 75 db minimum, dc to 500 Hz, G = + IN +IN 8 +V S 7 00kΩ 0kΩ G = +0. IN 0kΩ A +IN 00kΩ 0kΩ R EXT2 R EXT R G 6 IN A2 +IN AD628 OUT 5 APPLICATIONS High voltage current shunt sensing Programmable logic controllers Analog input front end signal conditioning +5 V, +0 V, ±5 V, ±0 V, and 4 to 20 ma Isolation Sensor signal conditioning Power supply monitoring Electrohydraulic controls Motor controls GENERAL DESCRIPTION The AD628 is a precision difference amplifier that combines excellent dc performance with high common-mode rejection over a wide range of frequencies. When used to scale high voltages, it allows simple conversion of standard control voltages or currents for use with single-supply ADCs. A wideband feedback loop minimizes distortion effects due to capacitor charging of Σ-Δ ADCs. A reference pin (VREF) provides a dc offset for converting bipolar to single-sided signals. The AD628 converts +5 V, +0 V, ±5 V, ±0 V, and 4 to 20 ma input signals to a single-ended output within the input range of single-supply ADCs. The AD628 has an input common mode and differential mode operating range of ±20 V. The high common mode, input impedance makes the device well suited for high voltage measurements across a shunt resistor. The inverting input of the buffer amplifier is available for making a remote Kelvin connection. CMRR (db) V S V REF C FILT Figure. V S = ±5V k 0k 00k FREQUENCY (Hz) V S = ±2.5V Figure 2. CMRR vs. Frequency of the AD628 A precision 0 kω resistor connected to an external pin is provided for either a low-pass filter or to attenuate large differential input signals. A single capacitor implements a lowpass filter. The AD628 operates from single and dual supplies and is available in an 8-lead SOIC_N or an 8-lead MSOP. It operates over the standard industrial temperature range of 40 C to +85 C Rev. G Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
2 SPECIFICATIONS TA = 25 C, VS = ±5 V, RL = 2 kω, REXT = 0 kω, REXT2 =, VREF = 0 V, unless otherwise noted. Table. M DIFFERENTIAL AND OUTPUT AMPLIFIER Gain Equation G = +0. ( + REXT/REXT2) V/V Gain Range See Figure V/V Offset Voltage VCM = 0 V; RTI of input pins 2 ; mv output amplifier G = + vs. Temperature μv/ C CMRR 3 RTI of input pins; db G = +0. to +00 vs. Temperature 4 4 (μv/v)/ C PSRR (RTI) VS = ±0 V to ±8 V db Input Voltage Range Common Mode V Differential V Dynamic Response Small Signal Bandwidth 3 db G = khz Full Power Bandwidth 5 5 khz Settling Time G = +0., to 0.0%, 00 V step μs Slew Rate V/μs Noise (RTI) Spectral Density khz nv/ Hz 0. Hz to 0 Hz 5 5 μv p-p DIFFERENTIAL AMPLIFIER Gain V/V Error % vs. Temperature 5 5 ppm/ C Nonlinearity 5 5 ppm vs. Temperature ppm Offset Voltage RTI of input pins mv vs. Temperature 8 8 μv/ C Input Impedance Differential kω Common Mode kω CMRR 4 RTI of input pins; db G = +0. to +00 vs. Temperature 4 4 (μv/v)/ C Output Resistance 0 0 kω Error % Rev. G Page 3 of 20
3 M OUTPUT AMPLIFIER Gain Equation G = ( + REXT/REXT2) V/V Nonlinearity G = +, VOUT = ±0 V ppm Offset Voltage RTI of output amp mv vs. Temperature μv/ C Output Voltage Swing RL = 0 kω V RL = 2 kω V Bias Current na Offset Current na CMRR VCM = ±3 V db Open-Loop Gain VOUT = ±3 V db POWER SUPPLY Operating Range ±2.25 ±8 ±2.25 ±8 V Quiescent Current.6.6 ma TEMPERATURE RANGE C To use a lower gain, see the Ga in Adjustment section. 2 The addition of the difference amplifier and output amplifier offset voltage does not exceed this specification. 3 (0.)( V ) Error due to common mode as seen at the output: CM V OUT = [ Output AmplifierGain] (0.)( V Error due to common mode as seen at the output of A: = CM ) V OUT A Rev. G Page 4 of 20
4 TA = 25 C, VS = 5 V, RL = 2 kω, REXT = 0 kω, REXT2 =, VREF = 2.5 V, unless otherwise noted. Table 2. M DIFFERENTIAL AND OUTPUT AMPLIFIER Gain Equation G = +0.(+ REXT/REXT2) V/V Gain Range See Figure V/V Offset Voltage VCM = 2.25 V; RTI of input pins 2 ; mv output amplifier G = + vs. Temperature μv/ C CMRR 3 RTI of input pins; G = +0. to db vs. Temperature 4 4 (μv/v)/ C PSRR (RTI) VS = 4.5 V to 0 V db Input Voltage Range Common Mode V Differential V Dynamic Response Small Signal Bandwidth 3 db G = khz Full Power Bandwidth khz Settling Time G = +0.; to 0.0%, 30 V step 5 5 μs Slew Rate V/μs Noise (RTI) Spectral Density khz nv/ Hz 0. Hz to 0 Hz 5 5 μv p-p DIFFERENTIAL AMPLIFIER Gain V/V Error % Nonlinearity 3 3 ppm vs. Temperature ppm Offset Voltage RTI of input pins mv vs. Temperature 0 0 μv/ C Input Impedance Differential kω Common Mode kω CMRR 5 RTI of input pins; G = +0. to db vs. Temperature 4 4 (μv/v)/ C Output Resistance 0 0 kω Error % OUTPUT AMPLIFIER Gain Equation G = ( + REXT/REXT2) V/V Nonlinearity G = +, VOUT = V to 4 V ppm Output Offset Voltage RTI of output amplifier mv vs. Temperature μv/ C Output Voltage Swing RL = 0 kω V RL = 2 kω 4 4 V Bias Current na Offset Current na CMRR VCM = V to 4 V db Open-Loop Gain VOUT = V to 4 V db Rev. G Page 5 of 20
5 M POWER SUPPLY Operating Range ± ± V Quiescent Current.6.6 ma TEMPERATURE RANGE C To use a lower gain, see the Gain Adjustment section. 2 The addition of the difference amplifier and output amplifier offset voltage does not exceed this specification. 3 (0.)( V ) Error due to common mode as seen at the output: CM V OUT = [ Output AmplifierGain] Greater values of voltage are possible with greater or lesser values of VREF. 5 (0.)( V Error due to common mode as seen at the output of A: = CM ) V OUT A Rev. G Page 6 of 20
6 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Supply Voltage ±8 V Internal Power Dissipation See Figure 3 Input Voltage (Common Mode) ±20 V Differential Input Voltage ±20 V Output Short-Circuit Duration Indefinite Storage Temperature Range 65 C to +25 C Operating Temperature Range 40 C to +85 C Lead Temperature (Soldering, 0 sec) 300 C When using ±2 V supplies or higher, see the Input Voltage Range section. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL CHARACTERISTICS.6.4 T J = 50 C POWER DISSIPATION (W) LEAD SOIC PACKAGE 8-LEAD MSOP PACKAGE MSOP θ JA (JEDEC; 4-LAYER BOARD) = C/W SOIC θ JA (JEDEC; 4-LAYER BOARD) = 54 C/W AMBIENT TEMPERATURE ( C) Figure 3. Maximum Power Dissipation vs. Temperature ESD CAUTION Rev. G Page 7 of 20
7 OUTLINE DIMENSIONS PIN 0.65 BSC COPLANARITY MAX SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-87-AA Figure Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters 5.00 (0.968) 4.80 (0.890) 4.00 (0.574) 3.80 (0.497) (0.244) 5.80 (0.2284) 0.25 (0.0098) 0.0 (0.0040) COPLANARITY 0.0 SEATING PLANE.27 (0.0500) BSC.75 (0.0688).35 (0.0532) 0.5 (0.020) 0.3 (0.022) 0.25 (0.0098) 0.7 (0.0067) 0.50 (0.096) 0.25 (0.0099).27 (0.0500) 0.40 (0.057) COMPLIANT TO JEDEC STANDARDS MS-02-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) ORDERING GUIDE Model Temperature Range Description Package Option Branding 40 C to +85 C 8-Lead SOIC_N R-8 -REEL 40 C to +85 C 8-Lead SOIC_N 3" Reel R-8 -REEL7 40 C to +85 C 8-Lead SOIC_N 7" Reel R-8 Z 40 C to +85 C 8-Lead SOIC_N R-8 Z-RL 40 C to +85 C 8-Lead SOIC_N 3" Reel R-8 Z-R7 40 C to +85 C 8-Lead SOIC_N 7" Reel R-8 M 40 C to +85 C 8-Lead MSOP RM-8 JGA M-REEL 40 C to +85 C 8-Lead MSOP 3" Reel RM-8 JGA M-REEL7 40 C to +85 C 8-Lead MSOP 7" Reel RM-8 JGA MZ 40 C to +85 C 8-Lead MSOP RM-8 JGZ MZ-RL 40 C to +85 C 8-Lead MSOP 3" Reel RM-8 JGZ MZ-R7 40 C to +85 C 8-Lead MSOP 7" Reel RM-8 JGZ AD628-EVAL Evaluation Board Z = RoHS Compliant Part Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C /07(G) A Rev. G Page 20 of 20
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Precision, Low Power, Micropower Dual Operational Amplifier OP9 FEATURES Single-/dual-supply operation:. V to 3 V, ±.8 V to ±8 V True single-supply operation; input and output voltage Input/output ranges
More informationLow Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers AD8276/AD8277
Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers AD827/AD8277 FEATURES Wide input range beyond supplies Rugged input overvoltage protection Low supply current: 2 μa maximum per channel
More informationGeneral-Purpose CMOS Rail-to-Rail Amplifiers AD8541/AD8542/AD8544
General-Purpose CMOS Rail-to-Rail Amplifiers FEATURES Single-supply operation: 2.7 V to 5.5 V Low supply current: 45 μa/amplifier Wide bandwidth: MHz No phase reversal Low input currents: 4 pa Unity gain
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Single-Supply, Low Cost Instrumentation Amplifier FEATURES Gain set with resistor Gain = 5 to Inputs Voltage range to 5 mv below negative rail 5 na maximum input bias current 3 nv/ Hz, RTI noise @ khz
More informationADA485-/ADA485- TABLE OF CONTENTS Features... Applications... Pin Configurations... General Description... Revision History... Specifications... 3 Spe
NC NC NC NC 5 6 7 8 6 NC 4 PD 3 PD FEATURES Ultralow power-down current: 5 na/amplifier maximum Low quiescent current:.4 ma/amplifier High speed 75 MHz, 3 db bandwidth V/μs slew rate 85 ns settling time
More informationUltralow Offset Voltage Operational Amplifier OP07
FEATURES Low VOS: 5 μv maximum Low VOS drift:. μv/ C maximum Ultrastable vs. time:.5 μv per month maximum Low noise:. μv p-p maximum Wide input voltage range: ± V typical Wide supply voltage range: ± V
More informationPrecision, 16 MHz CBFET Op Amp AD845
a FEATURES Replaces Hybrid Amplifiers in Many Applications AC PERFORMANCE: Settles to 0.01% in 350 ns 100 V/ s Slew Rate 12.8 MHz Min Unity Gain Bandwidth 1.75 MHz Full Power Bandwidth at 20 V p-p DC PERFORMANCE:
More informationSingle Supply, Rail to Rail Low Power FET-Input Op Amp AD820
a FEATURES True Single Supply Operation Output Swings Rail-to-Rail Input Voltage Range Extends Below Ground Single Supply Capability from + V to + V Dual Supply Capability from. V to 8 V Excellent Load
More informationSingle and Dual, Ultralow Distortion, Ultralow Noise Op Amps AD8597/AD8599 PIN CONFIGURATIONS FEATURES APPLICATIONS
Single and Dual, Ultralow Distortion, Ultralow Noise Op Amps FEATURES Low noise:. nv/ Hz at khz Low distortion: db THD @ khz Input noise,. Hz to Hz:
More informationPrecision Micropower Single Supply Operational Amplifier OP777
a FEATURES Low Offset Voltage: 1 V Max Low Input Bias Current: 1 na Max Single-Supply Operation: 2.7 V to 3 V Dual-Supply Operation: 1.35 V to 15 V Low Supply Current: 27 A/Amp Unity Gain Stable No Phase
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More informationSingle Supply, Rail to Rail Low Power FET-Input Op Amp AD820
a FEATURES True Single Supply Operation Output Swings Rail-to-Rail Input Voltage Range Extends Below Ground Single Supply Capability from V to V Dual Supply Capability from. V to 8 V Excellent Load Drive
More informationHigh Common-Mode Voltage, Single-Supply Difference Amplifier AD8202
High Common-Mode Voltage, Single-Supply Difference Amplifier FEATURES FUTIONAL BLOCK DIAGRAM High common-mode voltage range V to + V at a V supply voltage Operating temperature range: C to + C Supply voltage
More informationLow Cost, High Speed, Rail-to-Rail, Output Op Amps ADA4851-1/ADA4851-2/ADA4851-4
Low Cost, High Speed, Rail-to-Rail, Output Op Amps ADA485-/ADA485-/ADA485-4 FEATURES High speed 3 MHz, 3 db bandwidth 375 V/μs slew rate 55 ns settling time to.% Excellent video specifications. db flatness:
More informationSingle-Supply 42 V System Difference Amplifier AD8205
FEATURES Ideal for current shunt applications High common-mode voltage range 2 V to +65 V operating 25 V to +75 V survival Gain = 50 V/V Wide operating temperature range: 40 C to +125 C for Y and W grade
More informationSingle-Supply, Rail-to-Rail Low Power FET-Input Op Amp AD822
Single-Supply, Rail-to-Rail Low Power FET-Input Op Amp AD8 FEATURES True single-supply operation Output swings rail-to-rail Input voltage range extends below ground Single-supply capability from 5 V to
More informationLow Cost, General Purpose High Speed JFET Amplifier AD825
a FEATURES High Speed 41 MHz, 3 db Bandwidth 125 V/ s Slew Rate 8 ns Settling Time Input Bias Current of 2 pa and Noise Current of 1 fa/ Hz Input Voltage Noise of 12 nv/ Hz Fully Specified Power Supplies:
More informationSingle-Supply, Rail-to-Rail Low Power FET-Input Op Amp AD822
Single-Supply, Rail-to-Rail Low Power FET-Input Op Amp AD822 FEATURES True single-supply operation Output swings rail-to-rail Input voltage range extends below ground Single-supply capability from 3 V
More information16 V Rail-to-Rail, Zero-Drift, Precision Instrumentation Amplifier AD8230
V Rail-to-Rail, Zero-Drift, Precision Instrumentation Amplifier AD FEATURES Resistor programmable gain range: to Supply voltage range: ± V to ± V, + V to + V Rail-to-rail input and output Maintains performance
More information250 MHz, General Purpose Voltage Feedback Op Amps AD8047/AD8048
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a FEATURES High DC Precision 75 V Max Offset Voltage V/ C Max Offset Voltage Drift 5 pa Max Input Bias Current.2 pa/ C Typical I B Drift Low Noise.5 V p-p Typical Noise,. Hz to Hz Low Power 6 A Max Supply
More informationPrecision, Very Low Noise, Low Input Bias Current Operational Amplifiers
Data Sheet Precision, Very Low Noise, Low Input Bias Current Operational Amplifiers AD8671/AD8672/AD8674 FEATURES Very low noise: 2.8 nv/ Hz, 77 nv p-p Wide bandwidth: 1 MHz Low input bias current: 12
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a FEATURES Excellent TCV OS Match, 2 V/ C Max Low Input Offset Voltage, 15 V Max Low Supply Current, 55 A Max Single Supply Operation, 5 V to 3 V Low Input Offset Voltage Drift,.75 V/ C High Open-Loop
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a FEATURES High Speed 50 MHz Unity Gain Stable Operation 300 V/ms Slew Rate 120 ns Settling Time Drives Unlimited Capacitive Loads Excellent Video Performance 0.04% Differential Gain @ 4.4 MHz 0.198 Differential
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High Precision V Reference FEATURES Laser trimmed to high accuracy.000 V ± 5 mv (U grade) Trimmed temperature coefficient 5 ppm/ C maximum (U grade) Noise-reduction capability Low quiescent current: ma
More informationUltraprecision Operational Amplifier OP177
Ultraprecision Operational Amplifier FEATURES Ultralow offset voltage TA = 5 C, 5 μv maximum Outstanding offset voltage drift. μv/ C maximum Excellent open-loop gain and gain linearity V/μV typical CMRR:
More informationHigh Common-Mode Rejection. Differential Line Receiver SSM2141 REV. B FUNCTIONAL BLOCK DIAGRAM FEATURES. High Common-Mode Rejection
a FEATURES High Common-Mode Rejection DC: 100 db typ 60 Hz: 100 db typ 20 khz: 70 db typ 40 khz: 62 db typ Low Distortion: 0.001% typ Fast Slew Rate: 9.5 V/ s typ Wide Bandwidth: 3 MHz typ Low Cost Complements
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a FEATURE HIGH DC PRECISION V max Offset Voltage.6 V/ C max Offset Drift pa max Input Bias Current LOW NOISE. V p-p Voltage Noise,. Hz to Hz LOW POWER A Supply Current Available in -Lead Plastic Mini-DlP,
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High Precision 0 V IC Reference FEATURES Laser trimmed to high accuracy 0.000 V ±5 mv (L and U models) Trimmed temperature coefficient 5 ppm/ C maximum, 0 C to 70 C (L model) 0 ppm/ C maximum, 55 C to
More informationHigh Common-Mode Voltage, Single-Supply Difference Amplifier AD8202
Data Sheet High Common-Mode Voltage, Single-Supply Difference Amplifier AD FEATURES High common-mode voltage range V to + V at a V supply voltage Operating temperature range: C to + C Supply voltage range:.
More informationQuad Picoampere Input Current Bipolar Op Amp AD704
a FEATURES High DC Precision 75 V Max Offset Voltage V/ C Max Offset Voltage Drift 5 pa Max Input Bias Current.2 pa/ C Typical I B Drift Low Noise.5 V p-p Typical Noise,. Hz to Hz Low Power 6 A Max Supply
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Ultralow Distortion High Speed Amplifiers FEATURES CONNECTION DIAGRAMS Extremely Low Distortion Second Harmonic 88 dbc @ 5 MHz SOIC (R) SC7 (KS-5) 8 dbc @ MHz (AD87) AD87 AD87 NC V (Top View) 8 NC OUT
More information1.8 V, Micropower, Zero-Drift, Rail-to-Rail Input/Output Op Amp ADA4051-2
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