AD524AD

a FEATURES Low Noise: 0.3 V p-p 0.1 Hz to 10 Hz Low Nonlinearity: 0.003% (G = 1) High CMRR: 120 dB (G = 1000) Low Offset Voltage: 50 V Low Offset Voltage Drift: 0.5 V/ 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 Carriers Available Available in Tape and Reel in Accordance with EIA-481A Standard Standard Military Drawing Also Available PRODUCT DESCRIPTION –INPUT G = 10 G = 100 Precision Instrumentation Amplifier AD524 FUNCTIONAL BLOCK DIAGRAM PROTECTION 4.44k 404 40 G = 1000 20k RG1 RG2 20k 20k 20k REFERENCE +INPUT PROTECTION 20k VOUT Vb 20k SENSE AD524 PRODUCT HIGHLIGHTS 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 µ V/° C, CMR above 90 dB at unity gain (120 dB at G = 1000) and maximum nonlinearity of 0.003% at G = 1. In addition to the outstanding dc specifications, the AD524 also has a 25 kHz gain bandwidth product (G = 1000). To make it suitable for high speed data acquisition systems the AD524 has an output slew rate of 5 V/µs and settles in 15 µ s to 0.01% for gains of 1 to 100. 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 IC instrumentation amplifier is available in four different 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. Devices are available in 16-lead ceramic DIP and SOIC packages and a 20-terminal leadless chip carrier. 1. The AD524 has guaranteed low offset voltage, offset voltage drift and low noise for precision high gain applications. 2. The AD524 is functionally complete with pin programmable gains of 1, 10, 100 and 1000, and single resistor programmable for any gain. 3. Input and output offset nulling terminals are provided for very high precision applications and to minimize offset voltage changes in gain ranging applications. 4. The AD524 is input protected for both power-on and poweroff fault conditions. 5. The AD524 offers 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). R EV. E 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 AD524–SPECIFICATIONS (@ V = S 15 V, RL = 2 k Min AD524B Typ and TA = +25 C unless otherwise noted) Max Min AD524C Typ Max Min AD524S Typ Max Units Model GAIN Gain Equation (External Resistor Gain Programming) Gain Range (Pin Programmable) Gain Error1 G=1 G = 10 G = 100 G = 1000 Nonlinearity G=1 G = 10,100 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 INPUT Input Impedance Differential Resistance Differential Capacitance Common-Mode Resistance Common-Mode Capacitance Input Voltage Range Max Differ. Input Linear (V DL) 2 Max Common-Mode Linear (V CM) Common-Mode Rejection dc to 60 Hz with 1 k Ω 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 R.T.I. R.T.O. R.T.I., 0.1 Hz to 10 Hz G=1 G = 10 G = 100, 1000 Current Noise 0.1 Hz to 10 Hz Min AD524A Typ Max  40 , 000   RG  + 1 ± 20%     40 , 000   RG  + 1 ± 20%     40 , 000   RG  + 1 ± 20%     40 , 000   RG  + 1 ± 20%    1 to 1000 0.05 0.25 0.5 ±2.0 ± 0.01 ± 0.01 ± 0.01 5 15 35 100 250 2 5 100 70 85 95 100 50 35 75 95 105 110 1 to 1000 0.03 0.15 0.35 1.0 ± 0.005 ± 0.005 ± 0.01 5 10 25 50 100 0.75 3 50 80 100 110 115 25 15 1 to 1000 0.02 0.1 0.25 0.5 ± 0.003 ± 0.003 ± 0.01 5 10 25 50 50 0.5 2.0 25 75 95 105 110 15 10 1 to 1000 0.05 0.25 0.5 2.0 ± 0.01 ± 0.01 ± 0.01 5 10 25 50 100 2.0 3.0 50 % % % % % % % ppm/°C ppm/°C ppm/°C ppm/°C µV µV/°C mV µV/°C dB dB dB dB 50 35 nA pA/°C nA pA/°C ± 100 ± 100 ± 100 ± 100 ± 100 ± 100 ± 100 ± 100 109 10 109 10 ± 10 G  12 V –  × VD  2  ± 10 10 9 10 10 9 10 G  12 V –  × VD  2  ± 10 10 9 10 10 9 10 G  12 V –  × VD  2  ± 10 10 9 10 10 9 10 G  12 V –  × VD  2  Ω pF Ω pF V V dB dB dB dB 70 90 100 110 ± 10 75 95 105 115 ± 10 80 100 110 120 ± 10 70 90 100 110 ± 10 V 1 400 150 25 5.0 15 75 1 400 150 25 5.0 15 75 1 400 150 25 5.0 15 75 1 400 150 25 5.0 15 75 MHz kHz kHz kHz V/µs µs µs 7 90 15 2 0.3 60 7 90 15 2 0.3 60 7 90 15 2 0.3 60 7 90 15 2 0.3 60 nV/√Hz nV√Hz µV p-p µV p-p µV p-p pA p-p –2– REV. E AD524 Model SENSE INPUT RIN IIN Voltage Range Gain to Output REFERENCE INPUT RIN IIN Voltage Range Gain to Output TEMPERATURE RANGE Specified Performance Storage POWER SUPPLY Power Supply Range Quiescent Current Min AD524A Typ 20 15 l 40 15 l –25 –65 6 ± 15 3.5 +85 +150 18 5.0 –25 –65 6 ± 15 3.5 Max Min AD524B Typ 20 15 l 40 15 10 1 +85 +150 18 5.0 –25 –65 6 ± 15 3.5 l +85 +150 18 5.0 –55 –65 6 ± 15 3.5 Max Min AD524C Typ 20 15 1 40 15 10 1 +125 +150 18 5.0 Max Min AD524S Typ Max 20 15 l 40 15 Units kΩ ± 20% µA V % kΩ ± 20% µA V % °C °C V mA ± 10 ± 10 ± 10 ± 10 ± 10 ± 10 NOTES 1 Does not include effects of external resistor RG. 2 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. Specification subject to change without notice. All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. REV. E –3– AD524 Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . 450 mW Input Voltage2 (Either Input Simultaneously) |VIN| + |VS | . . . . . . . .