Ad620

Ad620 gy navasuchiha 110R5pR 17, 2011 23 pagcs FEATURES EASYTO USE Gain set With one External Resistor (Gain Range 1 to 1000) Wide Power Supply Range ( 2. 3 V to 18 V) Higher Performance than Three Op Amp IA Designs Available in 8-I_ead DIP and SOIC Packaging Low Power, 1. 3 mA max Supply current EXCELLENT DC PERFORMANCE («B GRADE») 50 V max, Input Offset Voltage 0. 6 W C max, Input Offset Drift 1. 0 nA max, Input Bias Current 100 dB min Common-Mode Rejection Ratio (G = 10) LOW NOISE9 m. ///Hz, @ 1 kH4 Input voltage NOise 0. 28 V p-p Noise (0. 1 Hz to 10 Hz) EXCELLENT AC SPECIACATIONS 20 kHz Bandwidth (G = 100) 15 s settling Time to 0. 1% APPLICATIONS Weigh Scales ECG and Medical Instrumentation Transducer Interface Data Acquisition Systems Industrial Process Controls Battery Powered and Portable E ui ment PRODUCT DESCRIPTION Low Cost, Low Powe CONNECTION DIAG and SOIC (R) Package RG-IN +1N -vsn 2348RG 7 6 OUTPUT AD620 TOP VIEW 5 REF PACE 1 or2B to View nut*ge ler AD620 IP (N), cerdiP (Q) 1000. Furthermore, the AD620 features Olead SOIC and DIP packaging that is smaller than discrete

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designs, and offers Iower power (only 1. 3 mA max supply current), making it a good fit for attery powered, portable (or remote) applications.

The AD620, With ts high accuracy of 40 ppm maximum nonlinearity, Iow offset drift of0. 6 pV/0C max, is ideal for use in precision data acquisition systems, such as weigh scales and transducer interfaces. Furthermore, the Iow noise, Iow input bias current, and Iow power of the AD620 make it well suited for medical applications such as ECG and noninvasive blood pressure monitors. The Iow input bias current of 1. 0 nA max is made possible with the use of Superpeta processing in the input stage. The AD620 works well as a preamplifier due to its Iow input oltage noise of9 nVNHz at 1 kHz, 0. 8 VV p-p in the 0. 1 Hz to 10 Hz band, 0. 1 pA/&/Hz input current noise. Also, the AD620 is well suited for multiplexed applications with its settling time of 15 ps to 0. 01 % and its cost is Iow enough to enable designs with one inamp per channel. 10,000 The AD620 is a Iow cost, high accuracy instrumentation amplifier that requires only one external resistor to set gains of 1 to 30,000 TOTAL ERROR, PPM OF FULL SCALE 25,000 3 OP-AMP IN-AMP (3 op-07s) 1 ,000 20,000 RTI VOLTAGE NOISE (0. 1 – 1 OHz) – V p-p TYPICAL STANDARD BIPOLAR INPUT IN-AMP 100 G = 100 10

AD620 SUPER ETA BIPOLAR INPUT IN-AMP 1 5,000 2 OF Total Voltage Noise vs. Source Resistance 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 othen,’dise 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 0

Analog Devices, Inc. , 1999 AD620-SPECIFlCATIONS Model GAIN Gain Range Gain Error2 G = 10 G 100 G 1000 Noniineanty, G = 1-1000 G = 1-100 Gain vs. Temperature Conditions G – 1 + (49. 4 k/R G) VOLJT 10 V (Typical @ +25 C, VS- Min 1 0. 03 0. 15 0. 15 0. 40 AD520A TYP Max 10,000 0. 10 0. 30 0. 30 0. 70 40 95 10 -50 30 0. 3 400 125 185 1. 0 1000 1500 2000 15 15 V, and RL = 2 k, unless otherwise noted) Min 1 0. 01 0. 10 0. 10 0. 35 10 10 AD620B Typ Max 10,000 0. 02 0. 15 0. 15 0. 50 ao 95 10-5015 0. 1 200 50 85 0. 6 500 750 1000 7. 0 30 0. 3 400 Min 1 0. 03 0. 15 0. 15 0. 40 10 10 AD620S1 Typ Max 10,000 . 0 0. 30 0. 30 0. 70 40 95 10 -50 125 225 1 . 0 1000 1500 2000 15 % % % % ppm ppm ppm/0C ppm/0C PV PV pV/0C PV PV PV pVPC Units VOUT = -10 vto +10 V, 10 RL cain 2 10 10 VOLTAGE OFFSET Input O r Temperature Average TC output Offset, V OSO 10 VOLTAGE OFFSET Input Offset, VOSI Over Temperature Average TC Output Offset, V OSO Over Temperature Average TC Offset Referred to the Input vs. suppIY (PSR) G = 10 G = 100 G – 1000 INPUT CURRENT Input Bias Current Over Temperature Average TC Input Offset Current Over Temperature Average TC INPUT Input Impedance Differential Common-Mode Input Voltage

Range 3 Over Temperature Over Temperature Common-Mode Rejection Ratio DC to 60 Hz with I kn Source Imbalance G-l G = 10 G – – 1000 OUTPUT output swing over Temperature Over Temperature Short Current Circuit (Total RTI Error – V OSI + VOSO/G) 5 Vt0± 15 VVS- 15 15 15 VVS – ± 2. 3 Vt0± 18 V 80 95 110 110 5. 0 2. 5 100 120 140 140 0. 5 3. 0 0. 3 1. 5 2. 0 2. 5 1. 0 1. 5 80100 120 120 100 120 140 140 0. 5 3. 0 0. 3 1. 5 1. 0 1. 5 0. 5 0. 75 8095 110 110 100 120 140 140 0. 5 8. 0 0. 3 8. 0 24 1. 0 2. 0 dB dB dB dB nA nA nA PArc 2. 3 ppvvvv VCM = OVto ± 110 110 10 K), Vto

V VS V to 18 V 90 110 130 130 80 100 120 120 go 110 130 130 73 93 110 110 90 110 130 130 dB dB dB -VS+I. I -VS» 1. 4 -VS+1. 2 -VS• 1. 6 +vs – 1. 2 +VS- 1. 3 +vs ± 18 +VS – 1. 2 vs- 1. 3 +VS 1. 1 -vs+ 1. 6 -vs -1. 4 +VS— 1. 5 1. 2 —VS+ 1. 6 -1. 4+vs-1. s 1. 2 -vs+2. 3 – 1. 2 *VS- 1. 3 +vs-1. 4+VS- 1. 5 VVVV -2- MOdeI conditions Min AD620A TYP Max Min AD620B TYP Max Min AD620S1 Typ Max Units DYNAMIC RESPONSE Small Signal – 3 dB BandWidth G = IOG = 100 G = 1000 Slew Rate settling Time to 0. 01% 10 V Step G 1 000 NOISE Voltage Noise, s OF 1 kHz Input, Voltage Noise, , Voltaee Noise, e no RTI, 000 800 120 12 1. 15 150 0. 75 kHz kHz kHz kHz V/ps us ps Total RTI Noise = (e2 ni ) + ceno / 9 72 3. 0 0. 55 0. 28 100 10 20 450 13 100 9 72 13 100 9 72 13 100 nVWHZ nVWHZ VV VV p-p PV p-p fAWHz PA p-p kn PA V f — 1 kHz 3. 0 6. 0 0. 55 0. 8 0. 28 0. 4 100 10 20 +50 VIN+ , VREF = O 1. 6 +60 -VS+ 1. 6 -vs + 1. 5 +VS 1. 6 1 ± 0. 0001 ±2. 3 0. 9 1. 1 -40 to +85 ± 18 1. 3 ± ±2. 3 0. g 1. 1 ± 6 OF 8 1. 3 1. 6 2. 3 Vt0± 18 v V mA mA 0C . -400C to (S) . 550C to +1 250C Lead Temperature Range (Soldering 10 seconds) . . +300ec NOTES 1 Stresses above those listed under Absolute Maximum

Ratings may cause permanent damage to the device. This is a stress rating only; functional operation ofthe 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. 2 Specification is for device in free air: 8-Lead Plastic Package: eJA = 950C/W 8-Lead Cerdip Package: eJA – 1100C,w 8-Lead SOC Package: ajA 1550crw ORDERING GUIDE Model AD620AN AD6203N AD620AR AD620AR-REEL AD620AR. REEL7 AD620BR AD620BR-REEL AD620BR-REEL7 AD620ACHIPS

AD620SQ/883B Temperature Ranges Package Options* -400C to +850C -400C to +850C -400C to +850C -400C to +850C -400C to +85cc -400C to +850C -400c to +850C -400C to +850C -oc to *850C -550C to 41250C N-8 N-8 SO-8 13″ REEL 7″ REEL SO-8 13″ REEL 7″ REEL Die Form Q-8 *N Plastic DIP; Q Cerdip; SO Small Outline. METALIZATION PHOTOGRAPH Dimensions shown in inches and (mm). Contact factory for latest dimensions. RG» +VS OUTPUT 8 7 (1. 799) 1 120. 125 (3. 180) 34 -VS *FOR CHIP APPLICATIONS: THE PADS I RG AND 8RG MUST BE CONNECTED IN PARALLEL TO THE EXTERNAL GAIN REGISTER RG. DO NOT CONNECT THEM IN SERIES TO RG.

FOR UNITY GAIN APPLICATIONS WHERE RG IS NOT REQUIRED, THE PADS IRG MAY SIMPLY BE BONDED TOGETHER, AS WELL AS THE PADS 8RG. 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

AD620 Typical Characteristics (@ 25 C, V – SO SAMPLE SIZE 360 1 S 8 OF PERCENTAGE OF UNITS CURRENT – nA 1. 5 30 20 0. 5 o -1200 -600 0 +600 1200 INPUT BAS CORRENT – Minutes 2 3 WARM-UP TIME 4 Figure 4. Typical Distribution of Input Bias Current Figure 7. Change in Input Offset Voltage vs. Warm-up Time 50 SAMPLE SIZE 850 40 1000 00. 1 TIME- 1 SEC/DIV 100 Ik FREQUENCY – HZ 1 cok Figure lob. 0. 1 Hz to 10 Hz RTI Voltage Noise (G 1000) Figure 13. CMR vs. Frequency, RTI, Zero to 1 kn Source Imbalance 180 160 140 G- 1000 120 PSR – dB 35 G – 10, 100, 1000 30 OUTPUT VOLTAGE – Volts p-p 25 20 15 100 80 100 23