AD8221AR Analog Devices Inc, AD8221AR Datasheet - Page 11

• Manufacturer Part Number: AD8221AR
• Description: Precision Instrumentation Amplifier
• Manufacturer: Analog Devices Inc

Specifications of AD8221AR

• Rohs Status: RoHS non-compliant
• Design Resources: Low Cost, High Voltage, Programmable Gain Instrumentation Amplifier Using AD5292 and AD8221 (CN0114) Low Cost Programmable Gain Instrumentation Amplifier Circuit Using ADG1611 and AD620 (CN0146)
• Amplifier Type: Instrumentation
• Number Of Circuits: 1
• Slew Rate: 2 V/µs
• -3db Bandwidth: 825kHz
• Current - Input Bias: 500pA
• Voltage - Input Offset: 60µV
• Current - Supply: 900µA
• Current - Output / Channel: 18mA
• Voltage - Supply, Single/dual (±): 4.6 V ~ 36 V, ±2.3 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -
• Gain Bandwidth Product: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 12. Input Bias Current and Offset Current vs. Temperature
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
Figure 11. Change in Input Offset Voltage vs. Warm-Up Time
–1
–2
–3
–4
–5
0
5
4
3
2
1
0
0.01
–40
–15
INPUT OFFSET CURRENT
VS = ±15V
–20
–10
0
COMMON-MODE VOLTAGE (V)
Figure 10. I
0.1
20
–5
WARM-UP TIME (min)
TEMPERATURE (°C)
V
INPUT BIAS CURRENT
S
V
= ±5V
S
40
= ±15V
BIAS
0
vs. CMV
60
80
1
5
100
10
120
140
10
15
Rev. C | Page 11 of 24
180
160
140
120
100
100k
80
60
40
20
180
160
140
120
100
10k
100
80
60
40
20
1k
10
0.1
Figure 14. Negative PSRR vs. Frequency, RTI (G = 1 to 1000)
0.1
Figure 13. Positive PSRR vs. Frequency, RTI (G = 1 to 1000)
10
GAIN = 1000
GAIN = 100
GAIN = 10
GAIN = 1
GAIN = 1000
GAIN = 100
GAIN = 10
GAIN = 1
INPUT IN-AMP GAIN = 1
BEST AVAILABLE FET
1
Figure 15. Total Drift vs. Source Resistance
1
100
10
10
SOURCE RESISTANCE (Ω)
1k
FREQUENCY (Hz)
INPUT IN-AMP GAIN = 1000
FREQUENCY (Hz)
BEST AVAILABLE FET
100
100
AD8221 GAIN = 1
10k
1k
1k
100k
AD8221 GAIN = 1000
10k
10k
GAIN = 1000
100k
1M
100k
AD8221
1M
10M
1M