AD620AN SYC | Alldatasheet
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Technical content
8-Lead Plastic Mini-DIP (N), Cerdip (Q) and SOIC (R) Packages –IN R G –VS +IN R G +VS OUTPUT REF 5AD620 TOP VIEW REV. 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. Low Cost, Low Power Instrumentation Amplifier AD620
FEATURES
Gain Set with One External Resistor (Gain Range 1 to 1000) Wide Power Supply Range ( 62.3 V to 618 V) Higher Performance than Three Op Amp IA Designs Available in 8-Lead DIP and SOIC Packaging Low Power, 1.3 mA max Supply Current EXCELLENT DC PERFORMANCE (“B GRADE”) 50 mV max, Input Offset Voltage 0.6 mV/8C max, Input Offset Drift 1.0 nA max, Input Bias Current 100 dB min Common-Mode Rejection Ratio (G = 10) LOW NOISE 9 nV/ √Hz, @ 1 kHz, Input Voltage Noise 0.28 mV p-p Noise (0.1 Hz to 10 Hz) EXCELLENT AC SPECIFICATIONS 120 kHz Bandwidth (G = 100) 15 ms Settling Time to 0.01%
APPLICATIONS
ECG and Medical Instrumentation Transducer Interface Data Acquisition Systems Industrial Process Controls Battery Powered and Portable Equipment Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 PRODUCT DESCRIPTION The AD620 is a low cost, high accuracy instrumentation ampli- fier that requires only one external resistor to set gains of 1 to 0 5 10 15 20 30,000 5,000 10,000 15,000 20,000 25,000 TOTAL ERROR, PPM OF FULL SCALE SUPPLY CURRENT – mA AD620A R G
3 OP-AMP
(3 OP-07s) Figure 1. Three Op Amp IA Designs vs. AD620 Figure 2. Total Voltage Noise vs. Source Resistance
- Furthermore, the AD620 features 8-lead SOIC and DIP
for battery powered, portable (or remote) applications. as ECG and noninvasive blood pressure monitors.
AD620–SPECIFICATIONS (Typical @ +258C, VS = 615 V, and RL = 2 kV, unless otherwise noted) AD620A AD620B AD620S 1 Model Conditions Min Typ Max Min Typ Max Min Typ Max Units GAIN G = 1 + (49.4 k/R G) Gain Range 1 10,000 1 10,000 1 10,000 Gain Error
2 VOUT = ± 10 V
Nonlinearity, V OUT = –10 V to +10 V, G = 1–1000 R L = 10 kΩ 10 40 10 40 10 40 ppm G = 1–100 R L = 2 kΩ 10 95 10 95 10 95 ppm Gain vs. Temperature G =1 10 10 10 ppm/ °C Gain >12 –50 –50 –50 ppm/ °C VOLTAGE OFFSET (Total RTI Error = V OSI + VOSO/G) Input Offset, V OSI VS = ± 5 V to ± 15 V 30 125 15 50 30 125 µV Over Temperature V S = ± 5 V to ± 15 V 185 85 225 µV Output Offset, V OSO VS = ± 15 V 400 1000 200 500 400 1000 µV VS = ± 5 V 1500 750 1500 µV Over Temperature V S = ± 5 V to ± 15 V 2000 1000 2000 µV Average TC V S = ± 5 V to ± 15 V 5.0 15 2.5 7.0 5.0 15 µV/°C Offset Referred to the Input vs. Supply (PSR) V S = ± 2.3 V to ± 18 V G = 1 80 100 80 100 80 100 dB G = 10 95 120 100 120 95 120 dB G = 100 110 140 120 140 110 140 dB G = 1000 110 140 120 140 110 140 dB INPUT CURRENT Over Temperature 2.5 1.5 4 nA Average TC 3.0 3.0 8.0 pA/ °C Over Temperature 1.5 0.75 2.0 nA Average TC 1.5 1.5 8.0 pA/ °C INPUT Input Impedance Differential 10 i21 0 i21 0 i2G Ω ipF Common-Mode 10 i21 0 i21 0 i2G Ω ipF Common-Mode Rejection Ratio DC to 60 Hz with I kΩ Source Imbalance V CM = 0 V to ± 10 V G = 1 7 39 0 8 09 0 7 39 0 d B G = 10 93 110 100 110 93 110 dB G = 100 110 130 120 130 110 130 dB G = 1000 110 130 120 130 110 130 dB OUTPUT Output Swing R L = 10 kΩ , Short Current Circuit ± 18 ± 18 ± 18 mA REV. E–2– www.sycelectronica.com.ar
Model Conditions Min Typ Max Min Typ Max Min Typ Max Units DYNAMIC RESPONSE Small Signal –3 dB Bandwidth G = 1 1000 1000 1000 kHz G = 10 800 800 800 kHz G = 100 120 120 120 kHz G = 1000 12 12 12 kHz Settling Time to 0.01% 10 V Step G = 1–100 15 15 15 µs G = 1000 150 150 150 µs NOISE Voltage Noise, 1 kHz Total RTI Noise = (e2 ni )+ (eno /G)2 Input, Voltage Noise, e ni 91 3 91 3 91 3 n V / √Hz Output, Voltage Noise, e no 72 100 72 100 72 100 nV/ √Hz RTI, 0.1 Hz to 10 Hz Current Noise f = 1 kHz 100 100 100 fA/ √Hz
0.1 Hz to 10 Hz 10 10 10 pA p-p
RIN 20 20 20 k Ω IIN VIN+, VREF = 0 +50 +60 +50 +60 +50 +60 µA Gain to Output 1 ± 0.0001 1 ± 0.0001 1 ± 0.0001 POWER SUPPLY Operating Range 4 ± 2.3 ± 18 ± 2.3 ± 18 ± 2.3 ± 18 V TEMPERATURE RANGE For Specified Performance –40 to +85 –40 to +85 –55 to +125 °C NOTES 1See Analog Devices military data sheet for 883B tested specifications. 2Does not include effects of external resistor R G. 3One input grounded. G = 1. 4This is defined as the same supply range which is used to specify PSR. Specifications subject to change without notice. REV. E –3– www.sycelectronica.com.ar
REV. E–4– NOTES 1Stresses above those listed under Absolute Maximum Ratings may cause perma- nent 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. 2Specification is for device in free air: 8-Lead Plastic Package: qJA = 95°C/W 8-Lead Cerdip Package: qJA = 110°C/W 8-Lead SOIC Package: qJA = 155°C/W ABSOLUTE MAXIMUM RATINGS 1 Operating Temperature Range Lead Temperature Range ORDERING GUIDE Model Temperature Ranges Package Options* AD620AN –40 °C to +85°C N-8 AD620BN –40 °C to +85°C N-8 AD620AR –40 °C to +85°C SO-8 AD620AR-REEL –40 °C to +85°C 13" REEL AD620AR-REEL7 –40 °C to +85°C 7" REEL AD620BR –40 °C to +85°C SO-8 AD620BR-REEL –40 °C to +85°C 13" REEL AD620BR-REEL7 –40 °C to +85°C 7" REEL AD620ACHIPS –40 °C to +85°C Die Form AD620SQ/883B –55 °C to +125°C Q-8 *N = Plastic DIP; Q = Cerdip; SO = Small Outline. METALIZATION PHOTOGRAPH Dimensions shown in inches and (mm). Contact factory for latest dimensions. +VS OUTPUT REFERENCE +IN –VS –IN *FOR CHIP APPLICATIONS: THE PADS 1R G AND 8RG MUST BE CONNECTED IN PARALLEL TO THE EXTERNAL GAIN REGISTER R G . DO NOT CONNECT THEM IN SERIES TO R G . FOR UNITY GAIN APPLICATIONS WHERE R G IS NOT REQUIRED, THE PADS 1R G MAY SIMPLY BE BONDED TOGETHER, AS WELL AS THE PADS 8R G . 678 R G * 1 2 3 R G * 0.125 (3.180) 0.0708 (1.799) CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD620 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE www.sycelectronica.com.ar
calculate the effect various error sources have on circuit accuracy. Figure 34. Make vs. Buy inputs, both contributing to the overall input error.
REV. E–16– OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-8) Package 0.430 (10.92) 0.348 (8.84) 0.280 (7.11) 0.240 (6.10) PIN 1 SEATING PLANE0.022 (0.558) 0.014 (0.356) 0.060 (1.52) 0.015 (0.38) 0.210 (5.33) MAX 0.130 (3.30) MIN 0.070 (1.77) 0.045 (1.15) 0.100 (2.54) BSC 0.160 (4.06) 0.115 (2.93) 0.325 (8.25) 0.008 (0.204) 0.195 (4.95) 0.115 (2.93) Cerdip (Q-8) Package 1 4 0.310 (7.87) 0.220 (5.59) PIN 1 0.005 (0.13) MIN 0.055 (1.4) MAX SEATING PLANE0.023 (0.58) 0.014 (0.36) 0.200 (5.08) MAX 0.150 (3.81) MIN 0.070 (1.78) 0.030 (0.76) 0.200 (5.08) 0.125 (3.18) 0.100 (2.54) BSC 0.060 (1.52) 0.015 (0.38) 0.405 (10.29) MAX 15° 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20)SOIC (SO-8) Package 0.1968 (5.00) 0.1890 (4.80) 0.2440 (6.20) 0.2284 (5.80) PIN 1 0.1574 (4.00) 0.1497 (3.80) 0.0688 (1.75) 0.0532 (1.35) SEATING PLANE 0.0098 (0.25) 0.0040 (0.10) 0.0192 (0.49) 0.0138 (0.35) 0.0500 (1.27) BSC 0.0098 (0.25) 0.0075 (0.19) 0.0500 (1.27) 0.0160 (0.41) 0.0196 (0.50) 0.0099 (0.25)x 45° C1599c–0–7/99PRINTED IN U.S.A. www.sycelectronica.com.ar