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Details, datasheet, quote on part number:AD8221AR
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Datasheet text preview:
PRELIMINARY TECHNICAL DATA
a
Precision Instrumentation Amplifier AD8221 Preliminary Technical Data
AAD8221IC D8 2X X_ µS O -IN 1 RG 2 RG 3 +IN 4 T OP VIEW 8 +VS 7 VOUT 6 VRE F 5 -VS
FEATURES: Excellent Noise Immunity 90dB Minimum to 10kHz (G=10) Supply Voltage Range: Dual Supply ±2.3V to ±18V Single Supply 4.6V to 36V Excellent AC and DC Performance 90dB Minimum CMRR to 10kHz (G=10) 0.3 µV/°C Max Input Offset Drift 10 ppm/°C Max Gain Drift (G=1) APPLICATIONS Patient Monitor Sensor Signal Conditioning Bridge Transducer Multiplexed Systems 4 to 20mA Converter
CONNECTION DIAGRAM 8-Pin Plastic Micro SOIC (ARM) Package 8-Pin Plastic SOIC (AR, BR) Package
GENERAL DESCRIPTION
The AD8221 is a gain programmable, True Instrumentation Amplifier that provides the user with the highest CMRR over frequency available. This break through performance allows the user to reject common mode voltage noise out to 100 kHz. Errors in the users system will be held to minimum with the high CMRR over frequency performance. Line noise, as well as harmonics, noise encountered in Aerospace applications, noise from motors and repair equipment on factory floors, switching power supplies, and high frequency medical equipment used during operations will all be rejected since the CMRR rejection is 90dB (G=10) minimum to 10kHz with great performance out to 100kHz.
The AD8221 also gives the user excellent DC performance by providing maximum offset and gain drift of 0.3µV/°C and 10 ppm/°C (G=1) respectively. The AD8221 operates on both single and dual supplies. The device is specified for operation at a power supply voltage of ±15V and makes the AD8221 well suited for applications where input voltages of ±10Vare encountered. The AD8221 is specified over the standard industrial temperature range, -40°C to 85°C.
REV. PrH 4/7/2003 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 www.analog.com may result from its' use. No license is granted by implication or otherwise under and patent or patent rights of Analog Devices.
One Technology Way, P.O. Box, Norwood, MA 02062-9106, U.S.A Tel. 781/329-4700 Fax: 781/326-8703 © Analog Devices, Inc., 2003
PRELIMINARY TECHNICAL DATA
AD8221 - SPECIFICATIONS (TA = 25C, VS = ±15V and RL = 10k unless otherwise noted)
AD8221ARM
Parameter GAIN Gain Range Gain Error G=1 G = 10 G = 100 G = 1000 Gain Nonlinearity G = 1 - 1000 ±Gain vs. Temperature G=1 G>1 VOLTAGE OFFSET Input Offset, VOSI Average TC Output Offset, VOSO Average TC Offset Referred to the Input VS. Supply (PSR) G=1 G = 10 G = 100 G = 1000 INPUT Input Operating Impedance Differential Common Mode Input Operating Voltage Range Input Bias Current VS. Temperature Input Offset Current VS. Temperature Common Mode Rejection from 60Hz to 1kHz G=1 G = 10 G = 100 G = 1000 1kHz t0 10kHz G=1 G = 10 G = 100 G = 1000 OUTPUT Output Swing Conditions G = 1+ (49.4k/RG) 1 VO=±10V 0.10 0.2 0.2 0.2 VO=±10V RL = 10k 0.01 0.10 0.10 0.10 0.01 0.10 0.10 0.10 % % % % 1000 1 1000 Min Typ Max Min
AD8221AR
Typ Max Min T 1
AD8221BR
Typ B Max D 1000 Units V/V
10 3
40 10 50
10 3
40 10 50
10 3
40 5 50
ppm ppm/°C ppm/°C
Total RTI Error = VOSI + VOSO/G 300 1.5 600 10 60 0.4 300 6 25 0.3 150 5 µV µV/°C µV µV/°C
80 100 120 120
100 120 140 140
80 100 120 120
100 120 140 140
80 100 120 120
100 120 140 140
dB dB dB dB
100|| 2 100|| 2 VS = ±3V to ±18V -VS+1.9 0.5 3 0.3 1.5 +VS-1.4 -VS+1.9 2 1
100|| 2 100|| 2 +VS-1.4 -VS+1.9 0.5 3 0.3 1.5 2 1
100|| 2 100|| 2
G|| pF G|| pF +VS-1.4 V 2 1 nA pA/°C nA pA/°C
0.5 3 0.3 1.5
VCM = 0V to ±10V 76 96 116 120 VCM = 0V to ±10V to 10kHz to 10kHz to 10kHz to 10kHz RL = 10k VS = ±2.3V to ±18V 76 96 110 110 81 101 121 130 81 101 110 110 90 110 130 145 90 110 120 120 dB dB dB dB dB dB dB dB V VS-1.4 V
-VS+1.2
VS-1.4 -VS+1.2
VS-1.4 -VS+1.2
DYNAMIC RESPONSE Small Signal -3dB Bandwidth G=1 G = 10 G = 100 2
1000 800 120
1000 800 120
1000 800 120
REV. PrE 3/31/2003
kHz kHz kHz
PRELIMINARY TECHNICAL DATA
AD8221 - SPECIFICATIONS (TA = 25C, VS = ±15V and RL = 10k unless otherwise noted)
AD8221ARM
Parameter G = 1000 Settling Time to 0.01% G=1 1
AD8221AR
Typ Max Min
AD8221BR
Typ 12 Max Units kHz
10V Step 10 15 150 2 2.5 15 150 2 2.5 µS µS V/µS V/µS
G=1 G=5
1.7 2
1.7 2
1.7 2
2 2.5
NOISE RTI, 0.01 Hz to 10 Hz
G=1 G=10 G=100-1000 Voltage Noise, 1 kHz Input, Voltage Noise, eni Output, Voltage Noise, eno POWER SUPPLY Operating Range Quiescent Current TEMPERATURE RANGE For Specified Performance For extended temperature see typical performance curves 2 0.4 0.25 7 40 ±2.3 VS = ±2.3V to ±18V -40 -40 0.9 8 75 ±18 1 +85 +125 ±2.3 0.9 -40 -40 2 0.4 0.25 7 50 8 75 ±18 1 +85 +125 ±2.3 0.9 -40 -40 2 0.4 0.25 7 50 8 75 ±18 1 +85 +125 µV p-p µV p-p µV p-p nV/Hz nV/Hz V mA °C
3
REV. PrE 3/31/2003
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