AD524ADZ

Precision Instrumentation Amplifier AD524 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAM – INPUT 1 G = 10 13 G = 100 12 G = 1000 11 PROTECTION AD524 4.44kΩ 404Ω 40Ω Vb RG1 16 20kΩ 20kΩ 20kΩ 20kΩ SENSE OUTPUT RG2 3 + INPUT 2 20kΩ 20kΩ REFERENCE 00500-001 Low noise: 0.3 μV p-p at 0.1 Hz to 10 Hz Low nonlinearity: 0.003% (G = 1) High CMRR: 120 dB (G = 1000) Low offset voltage: 50 μV Low offset voltage drift: 0.5 μV/°C Gain bandwidth product: 25 MHz Pin programmable gains of 1, 10, 100, 1000 Input protection, power-on/power-off No external components required Internally compensated MIL-STD-883B and chips available 16-lead ceramic DIP and SOIC packages and 20-terminal leadless chip carrier available Available in tape and reel in accordance with EIA-481A standard Standard military drawing also available PROTECTION Figure 1. GENERAL DESCRIPTION The AD524 is a precision monolithic instrumentation amplifier designed for data acquisition applications requiring high accuracy under worst-case operating conditions. An outstanding combination of high linearity, high common-mode rejection, low offset voltage drift, and low noise makes the AD524 suitable for use in many data acquisition systems. The AD524 has an output offset voltage drift of less than 25 μV/°C, input offset voltage drift of less than 0.5 μV/°C, CMR above 90 dB at unity gain (120 dB at G = 1000), and maximum nonlinearity of 0.003% at G = 1. The gain bandwidth product of the AD524 is 25 kHz (G = 1000). The output slew rate of 5 V/μs and settling time of 15 μs to 0.01% for gains of 1 to 100, makes it suitable for high speed data acquisition systems. As a complete amplifier, the AD524 does not require any external components for fixed gains of 1, 10, 100, and 1000. For other gain settings between 1 and 1000, only a single resistor is required. The AD524 input is fully protected for both power-on and power-off fault conditions. The AD524 is available in four versions of accuracy and operating temperature range. The economical A grade, the low drift B grade, and lower drift, higher linearity C grade are specified from −25°C to +85°C. The S grade guarantees performance to specification over the extended temperature range −55°C to +125°C. The AD524 is available in a 16-lead ceramic DIP, 16-lead SBDIP, 16-lead SOIC wide packages, and 20-terminal leadless chip carrier. Rev. G PRODUCT HIGHLIGHTS 1. 2. 3. 4. 5. Guaranteed low offset voltage, low offset voltage drift, and low noise for precision high gain applications. Functionally complete with pin programmable gains of 1, 10, 100, and 1000, and single resistor-programmable for any gain. Input and output offset nulling terminals are provided for high precision applications and to minimize offset voltage changes in gain ranging applications. Input protected for both power-on and power-off fault conditions. Superior dynamic performance with a gain bandwidth product of 25 MHz, full power response of 75 kHz and a settling time of 15 μs to 0.01% of a 20 V step (G = 100). Document Feedback 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©1983–2018 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD524 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Offset and Output Offset ................................................ 15 Functional Block Diagram .............................................................. 1 Gain .............................................................................................. 16 General Description ......................................................................... 1 Input Bias Currents .................................................................... 17 Product Highlights ........................................................................... 1 Common-Mode Rejection ........................................................ 17 Revision History ............................................................................... 2 Grounding ................................................................................... 18 Specifications..................................................................................... 3 Sense Terminal............................................................................ 18 Absolute Maximum Ratings............................................................ 8 Reference Terminal .................................................................... 18 Connection Diagrams .................................................................. 8 Programmable Gain ................................................................... 20 ESD Caution .................................................................................. 8 Auto-Zero Circuits ..................................................................... 20 Typical Performance Characteristics ............................................. 9 Error Budget Analysis ................................................................ 21 Test Circuits ................................................................................. 14 References .................................................................................... 23 Theory of Operation ...................................................................... 15 Outline Dimensions ....................................................................... 24 Input Protection.......................................................................... 15 Ordering Guide .......................................................................... 25 REVISION HISTORY 1/2018—Rev. F to Rev. G Changes to General Description .................................................... 1 Change to Output Offset Voltage vs. Temperature Parameter, Unit Column, Table 1 ....................................................................... 3 Added References Section ............................................................. 23 Updated Outline Dimensions ....................................................... 24 Changes to Ordering Guide .......................................................... 25 11/2007—Rev. E to Rev. F Updated Format .................................................................. Universal Changes to General Description .................................................... 1 Changes to Figure 1 .......................................................................... 1 Changes to Figure 3 and Figure 4 Captions .................................. 8 Changes to Error Budget Analysis Section ................................. 21 Changes to Ordering Guide .......................................................... 25 4/1999—Rev. D to Rev. E Rev. G | Page 2 of 25 Data Sheet AD524 SPECIFICATIONS At VS = ±15 V, RL = 2 kΩ and TA = +25°C, unless otherwise noted. All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at the final electrical test. Results from those tests are used to calculate outgoing quality levels. Table 1. Parameter GAIN Gain Equation (External Resistor Gain Programming) Gain Range (Pin Programmable) Gain Error 1 G=1 G = 10 G = 100 G = 1000 Nonlinearity G=1 G = 10, G = 100 G = 1000 Gain vs. Temperature G=1 G = 10 G = 100 G = 1000 VOLTAGE OFFSET (May be Nulled) Input Offset Voltage vs. Temperature Output Offset Voltage vs. Temperature Offset Referred to the Input vs. Supply G=1 G = 10 G = 100 G = 1000 INPUT CURRENT Input Bias Current vs. Temperature Input Offset Current vs. Temperature Min AD524A Typ Max Min AD524B Typ Max  40 ,000  + 1 ± 20%   RG   40 ,000  + 1 ± 20%   RG  1 to 1000 1 to 1000 ±0.05 ±0.25 ±0.5 ±2.0 ±0.03 ±0.15 ±0.35 ±1.0 % % % % ±0.01 ±0.01 ±0.01 ±0.005 ±0.005 ±0.01 % % % 5 15 35 100 5 10 25 50 ppm/°C ppm/°C ppm/°C ppm/°C 250 2 5 100 100 0.75 3 50 µV µV/°C mV µV/°C 70 85 95 100 dB dB dB dB 75 95 105 110 ±50 ±100 ±25 ±100 ±35 ±100 Rev. G | Page 3 of 25 Unit ±15 ±100 nA pA/°C nA pA/°C AD524 Data Sheet Parameter INPUT Input Impedance Differential Resistance Differential Capacitance Common-Mode Resistance Common-Mode Capacitance Input Voltage Range Maximum Differential Input Linear (VDL) 2 Maximum Common-Mode Linear (VCM)2 Min AD524A Typ Max Min 109 10 109 10 ±10 Unit 109 10 109 10 Ω pF Ω pF ±10 G  12 V −  × VD  2   G  12 V −  × VD  2   Common-Mode Rejection DC to 60 Hz with 1 kΩ Source Imbalance G=1 G = 10 G = 100 G = 1000 OUTPUT RATING VOUT, RL = 2 kΩ DYNAMIC RESPONSE Small Signal – 3 dB G=1 G = 10 G = 100 G = 1000 Slew Rate Settling Time to 0.01%, 20 V Step G = 1 to 100 G = 1000 NOISE Voltage Noise, 1 kHz RTI RTO RTI, 0.1 Hz to 10 Hz G=1 G = 10 G = 100, 1000 Current Noise 0.1 Hz to 10 Hz SENSE INPUT RIN IIN Voltage Range Gain to Output REFERENCE INPUT RIN IIN Voltage Range Gain to Output AD524B Typ Max 70 90 100 110 V dB dB dB dB 75 95 105 115 ±10 ±10 V 1 400 150 25 5.0 1 400 150 25 5.0 MHz kHz kHz kHz V/µs 15 75 15 75 µs µs 7 90 7 90 nV/√Hz nV√Hz 15 2 0.3 15 2 0.3 µV p-p µV p-p µV p-p 60 60 pA p-p 20 15 20 15 kΩ ± 20% µA V % ±10 ±10 1 1 40 15 40 15 ±10 Rev. G | Page 4 of 25 V V ±10 1 1 kΩ ± 20% µA V % Data Sheet AD524 Parameter TEMPERATURE RANGE Specified Performance Storage POWER SUPPLY Power Supply Range Quiescent Current 1 2 Min AD524A Typ Max Min AD524B Typ Max –25 –65 +85 +150 –25 –65 +85 +150 °C °C ±18 5.0 ±6 ±18 5.0 V mA ±15 3.5 ±6 ±15 3.5 Unit Does not include effects of external resistor, RG. VOL is the maximum differential input voltage at G = 1 for specified nonlinearity. VDL at the maximum = 10 V/G. VD = actual differential input voltage. Example: G = 10, VD = 0.50. VCM = 12 V − (10/2 × 0.50 V) = 9.5 V. At VS = ±15 V, RL = 2 kΩ and TA = +25°C, unless otherwise noted. All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at the final electrical test. Results from those tests are used to calculate outgoing quality levels. Table 2. Parameter GAIN Gain Equation (External Resistor Gain Programming) Gain Range (Pin Programmable) Gain Error 1 G=1 G = 10 G = 100 G = 1000 Nonlinearity G=1 G = 10, G = 100 G = 1000 Gain vs. Temperature G=1 G = 10 G = 100 G = 1000 VOLTAGE OFFSET (May be Nulled) Input Offset Voltage vs. Temperature Output Offset Voltage vs. Temperature Offset Referred to the Input vs. Supply G=1 G = 10 G = 100 G = 1000 Min AD524C Typ Max Min AD524S Typ Max  40 ,000  + 1 ± 20%   RG   40 ,000  + 1 ± 20%   RG  1 to 1000 1 to 1000 80 100 110 115 Rev. G | Page 5 of 25 Unit ±0.02 ±0.1 ±0.25 ±0.5 ±0.05 ±0.25 ±0.5 ±2.0 % % % % ±0.003 ±0.003 ±0.01 ±0.01 ±0.01 ±0.01 % % % 5 10 25 50 5 10 25 50 ppm/°C ppm/°C ppm/°C ppm/°C 50 0.5 2.0 25 100 2.0 3.0 50 µV µV/°C mV µV 75 95 105 110 dB dB dB dB AD524 Data Sheet Parameter INPUT CURRENT Input Bias Current vs. Temperature Input Offset Current vs. Temperature INPUT Input Impedance Differential Resistance Differential Capacitance Common-Mode Resistance Common-Mode Capacitance Input Voltage Range Maximum Differential Input Linear (VDL) 2 Maximum Common-Mode Linear (VCM)2 AD524C Typ Max Min Min AD524S Typ Max ±100 ±100 nA pA/°C nA pA/°C 109 10 109 10 109 10 109 10 Ω pF Ω pF ±15 ±50 ±100 ±100 ±10 ±10 ±35 ±10  G 12 V −  × VD   2 Common-Mode Rejection DC to 60 Hz with 1 kΩ Source Imbalance G=1 G = 10 G = 100 G = 1000 OUTPUT RATING VOUT, RL = 2 kΩ DYNAMIC RESPONSE Small Signal – 3 dB G=1 G = 10 G = 100 G = 1000 Slew Rate Settling Time to 0.01%, 20 V Step G = 1 to 100 G = 1000 NOISE Voltage Noise, 1 kHz RTI RTO RTI, 0.1 Hz to 10 Hz G=1 G = 10 G = 100, 1000 Current Noise 0.1 Hz to 10 Hz SENSE INPUT RIN IIN Voltage Range Gain to Output 80 100 110 120  G 12 V −  × VD   2 V V V dB dB dB dB 70 90 100 110 ±10 ±10 V 1 400 150 25 5.0 1 400 150 25 5.0 MHz kHz kHz kHz V/µs 15 75 15 75 µs µs 7 90 7 90 nV/√Hz nV√Hz 15 2 0.3 15 2 0.3 µV p-p µV p-p µV p-p 60 60 pA p-p 20 15 20 15 kΩ ± 20% µA V % ±10 Rev. G | Page 6 of 25 Unit ±10 1 1 Data Sheet AD524 Parameter REFERENCE INPUT RIN IIN Voltage Range Gain to Output TEMPERATURE RANGE Specified Performance Storage POWER SUPPLY Power Supply Range Quiescent Current 1 2 Min AD524C Typ Max Min 40 15 40 15 10 –25 –65 Does not include effects of external resistor RG. VOL is the maximum differential input voltage at G = 1 for specified nonlinearity. VDL at the maximum = 10 V/G. VD = actual differential input voltage. Example: G = 10, VD = 0.50. VCM = 12 V − (10/2 × 0.50 V) = 9.5 V. Rev. G | Page 7 of 25 ±15 3.5 1 +85 +150 –55 –65 ±18 5.0 ±6 ±15 3.5 Unit kΩ ± 20% µA V % 10 1 ±6 AD524S Typ Max +85 +150 °C °C ±18 5.0 V mA AD524 Data Sheet ABSOLUTE MAXIMUM RATINGS CONNECTION DIAGRAMS – INPUT 1 16 RG1 + INPUT 2 15 OUTPUT NULL 14 OUTPUT NULL RG2 3 G = 10 TOP VIEW INPUT NULL 5 (Not to Scale) 12 G = 100