Datasheet

AD621A AD621B AD621S
1
Model Conditions Min Typ Max Min Typ Max Min Typ Max Unit
GAIN
Gain Error V
OUT
= ±10 V 0.15 0.05 0.15 %
Nonlinearity,
V
OUT
= –10 V to +10 V R
L
= 2 kΩ 2 10 2 10 2 10 ppm of FS
Gain vs. Temperature –1 ± 5–1±5–1±5 ppm/°C
TOTAL VOLTAGE OFFSET
Offset (RTI) V
S
= ±15 V 35 125 25 50 35 125 µV
Over Temperature V
S
= ±5 V to ± 15 V 185 215 225 µV
Average TC V
S
= ±5 V to ± 15 V 0.3 1.0 0.1 0.6 0.3 1.0 µV/°C
Offset Referred to the
Input vs. Supply (PSR)
2
V
S
= ±2.3 V to ± 18 V 110 140 120 140 110 140 dB
Total NOISE
Voltage Noise (RTI) 1 kHz 9 13 9 13 9 13 nV/√Hz
RTI 0.1 Hz to 10 Hz 0.28 0.28 0.4 0.28 0.4 µV p-p
Current Noise f = 1 kHz 100 100 100 fA/√Hz
0.1 Hz–10 Hz 10 10 10 pA p-p
INPUT CURRENT V
S
= ±15 V
Input Bias Current 0.5 2.0 0.5 1.0 0.5 2 nA
Over Temperature 2.5 1.5 4 nA
Average TC 3.0 3.0 8.0 pA/°C
Input Offset Current 0.3 1.0 0.3 0.5 0.3 1.0 nA
Over Temperature 1.5 0.75 2.0 nA
Average TC 1.5 1.5 8.0 pA/°C
INPUT
Input Impedance
Differential 10储210储210储2GΩ储pF
Common-Mode 10储210储210储2GΩ储pF
Input Voltage Range
3
V
S
= ±2.3 V to ±5 V –V
S
+ 1.9 +V
S
– 1.2 –V
S
+ 1.9 +V
S
– 1.2 –V
S
+ 1.9 +V
S
– 1.2 V
Over Temperature –V
S
+ 2.1 +V
S
– 1.3 –V
S
+ 2.1 +V
S
– 1.3 –V
S
+ 2.1 +V
S
– 1.3 V
V
S
= ±5 V to ± 18 V –V
S
+ 1.9 +V
S
– 1.4 –V
S
+ 1.9 +V
S
– 1.4 –V
S
+ 1.9 +V
S
– 1.4 V
Over Temperature –V
S
+ 2.1 +V
S
– 1.4 –V
S
+ 2.1 +V
S
– 1.4 –V
S
+ 2.3 +V
S
– 1.4 V
Common-Mode Rejection
Ratio DC to 60 Hz with
1 kΩ Source Imbalance V
CM
= 0 V to ±10 V 110 130 120 130 110 130 dB
OUTPUT
Output Swing R
L
= 10 kΩ,
V
S
= ±2.3 V to ±5 V –V
S
+ 1.1 +V
S
– 1.2 –V
S
+ 1.1 +V
S
– 1.2 –V
S
+ 1.1 +V
S
– 1.2 V
Over Temperature –V
S
+ 1.4 +V
S
– 1.3 –V
S
+ 1.4 +V
S
– 1.3 –V
S
+ 1.6 +V
S
– 1.3 V
V
S
= ±5 V to ± 18 V –V
S
+ 1.2 +V
S
– 1.4 –V
S
+ 1.2 +V
S
– 1.4 –V
S
+ 1.2 +V
S
– 1.4 V
Over Temperature –V
S
+ 1.6 +V
S
– 1.5 –V
S
+ 1.6 +V
S
– 1.5 –V
S
+ 2.3 +V
S
– 1.5 V
Short Current Circuit ±18 ± 18 ±18 mA
DYNAMIC RESPONSE
Small Signal,
–3 dB Bandwidth 200 200 200 kHz
Slew Rate 0.75 1.2 0.75 1.2 0.75 1.2 V/µs
Settling Time to 0.01% 10 V Step 12 12 12 µs
REFERENCE INPUT
R
IN
20 20 20 kΩ
I
IN
V
IN
+, V
REF
= 0 5060 5060 5060µA
Voltage Range –V
S
+ 1.6 +V
S
– 1.6 –V
S
+ 1.6 +V
S
– 1.6 V
S
+ 1.6 +V
S
– 1.6 V
Gain to Output 1 ± 0.0001 1 ± 0.0001 1 ± 0.0001
POWER SUPPLY
Operating Range ±2.3 ± 18 ±2.3 ±18 ± 2.3 ±18 V
Quiescent Current V
S
= ±2.3 V to ± 18 V 0.9 1.3 0.9 1.3 0.9 1.3 mA
Over Temperature 1.1 1.6 1.1 1.6 1.1 1.6 mA
TEMPERATURE RANGE
For Specified Performance –40 to +85 –40 to +85 –55 to +125 °C
NOTES
1
See Analog Devices’ military data sheet for 883B tested specifications.
2
This is defined as the supply range over which PSEE is defined.
3
Input Voltage Range = CMV + (Gain × V
DIFF
).
Specifications subject to change without notice.
Gain = 100
(Typical @ 25 ⴗ C, V
S
= ⴞ 15 V, and R
L
= 2 k ⍀ , unless otherwise noted.)
AD621
REV. B
–3–