Datasheet

AD812A
Model Conditions V
S
Min Typ Max Units
DC PERFORMANCE
Input Offset Voltage +5 V, +3 V 1.5 4.5 mV
T
MIN
–T
MAX
7.0 mV
Offset Drift +5 V, +3 V 7 µV/°C
–Input Bias Current +5 V, +3 V 2 20 µA
T
MIN
–T
MAX
30 µA
+Input Bias Current +5 V, +3 V 0.2 1.5 µA
T
MIN
–T
MAX
2.0 µA
Open-Loop Voltage Gain V
O
= +2.5 V p-p +5 V 67 73 dB
V
O
= +0.7 V p-p +3 V 70 dB
Open-Loop Transresistance V
O
= +2.5 V p-p +5 V 250 400 kΩ
V
O
= +0.7 V p-p +3 V 300 kΩ
INPUT CHARACTERISTICS
Input Resistance +Input +5 V 15 MΩ
–Input +5 V 90 Ω
Input Capacitance +Input 2 pF
Input Common Mode +5 V 1.0 4.0 V
Voltage Range +3 V 1.0 2.0 V
Common-Mode Rejection Ratio
Input Offset Voltage V
CM
= 1.25 V to 3.75 V +5 V 52 55 dB
–Input Current 35.5µA/V
+Input Current 0.1 0.2 µA/V
Input Offset Voltage V
CM
= 1 V to 2 V +3 V 52 dB
–Input Current 3.5 µA/V
+Input Current 0.1 µA/V
OUTPUT CHARACTERISTICS
Output Voltage Swing p-p R
L
= 1 kΩ, T
MIN
–T
MAX
+5 V 3.0 3.2 V p-p
R
L
= 150 Ω, T
MIN
–T
MAX
+5 V 2.8 3.1 V p-p
+3 V 1.0 1.3 V p-p
Output Current +5 V 20 30 mA
+3 V 15 25 mA
Short Circuit Current G = +2, R
F
= 715 Ω +5 V 40 mA
V
IN
= 1 V
MATCHING CHARACTERISTICS
Dynamic
Crosstalk G = +2, f = 5 MHz +5 V, +3 V –72 dB
Gain Flatness Match G = +2, f = 20 MHz +5 V, +3 V 0.1 dB
DC
Input offset Voltage T
MIN
–T
MAX
+5 V, +3 V 0.5 3.5 mV
–Input Bias Current T
MIN
–T
MAX
+5 V, +3 V 2 25 µA
POWER SUPPLY
Operating Range 2.4 36 V
Quiescent Current Per Amplifier +5 V 3.2 4.0 mA
+3 V 3.0 3.5 mA
T
MIN
–T
MAX
+5 V 4.5 mA
Power Supply Rejection Ratio
Input Offset Voltage V
S
= +3 V to +30 V 70 80 dB
–Input Current 0.3 0.6 µA/V
+Input Current 0.005 0.05 µA/V
TRANSISTOR COUNT 56
NOTES
1
Slew rate measurement is based on 10% to 90% rise time in the specified closed-loop gain.
2
Single supply differential gain and phase are measured with the ac coupled circuit of Figure 53.
Specifications subject to change without notice.
AD812–SPECIFICATIONS
Single Supply (Continued)
REV. B
–4–