Datasheet

AD845–SPECIFICATIONS
REV. E
–2–
(@ 25ⴗC and ⴞ15 V dc, unless otherwise noted.)
AD845J/A AD845K/B AD845S
Parameter Conditions Min Typ Max Min Typ Max Min Typ Max Unit
INPUT OFFSET VOLTAGE
1
Initial Offset 0.7 1.5 0.1 0.25 0.25 1.0 mV
T
MIN
to T
MAX
2.5 0.4 2.0 mV
Offset Drift 20 1.5 5.0 10 mV/∞C
INPUT BIAS CURRENT
2
Initial V
CM
= 0 V 0.75 2 0.5 1 0.75 2 nA
T
MIN
to T
MAX
45/75 18/38 500 nA
INPUT OFFSET CURRENT
Initial V
CM
= 0 V 25 300 15 100 25 300 pA
T
MIN
to T
MAX
3/6.5 1.2/2.6 20 nA
INPUT CHARACTERISTICS
Input Resistance 10
11
10
11
10
11
kW
Input Capacitance 4.0 4.0 4.0 pF
INPUT VOLTAGE RANGE
Differential ±20 ±20 ±20 V
Common-Mode ⴞ10 +10.5/–13 ⴞ10 +10.5/–13 ⴞ10 +10.5/–13 V
Common-Mode Rejection V
CM
= ±10 V 86 110 94 113 86 110 dB
INPUT VOLTAGE NOISE 0.1 Hz to 10 Hz 4 4 4 mV p-p
f = 10 Hz 80 80 80 nV/÷Hz
f = 100 Hz 60 60 60 nV/÷Hz
f = 1 kHz 25 25 25 nV/÷Hz
f = 10 kHz 18 18 18 nV/÷Hz
f = 100 kHz 12 12 12 nV/÷Hz
INPUT CURRENT NOISE f = 1 kHz 0.1 0.1 0.1 pA/÷Hz
OPEN-LOOP GAIN V
O
= ±10 V
R
LOAD
≥ 2 kW 200 500 250 500 200 500 V/mV
R
LOAD
≥ 500 W 100 250 125 250 100 250 V/mV
T
MIN
–T
MAX
70 75 50 V/mV
OUTPUT CHARACTERISTICS
Voltage R
LOAD
≥ 500 W ⴞ12.5 ⴞ12.5 ⴞ12.5 V
Current Short Circuit 50 50 50 mA
Output Resistance Open Loop 5 5 5 W
FREQUENCY RESPONSE
Small Signal Unity Gain 12.8 16 13.6 16 13.6 16 MHz
Full Power Bandwidth
3
V
O
= ±10 V
R
LOAD
= 500 W 1.75 1.75 1.75 MHz
Rise Time 20 20 20 ns
Overshoot 20 20 20 %
Slew Rate 80 100 94 100 94 100 V/ms
Settling Time 10 V Step
C
LOAD
= 100 pF
R
LOAD
= 500 W
to 0.01% 350 350 500 350 500 ns
to 0.1% 250 250 250 ns
DIFFERENTIAL GAIN f = 4.4 MHz 0.04 0.04 0.04 %
DIFFERENTIAL PHASE f = 4.4 MHz 0.02 0.02 0.02 Degree
POWER SUPPLY
Rated Performance ±15 ±15 ±15 V
Operating Range ⴞ4.75 ⴞ18 ⴞ4.75 ⴞ18 ⴞ4.75 ⴞ18 V
Rejection Ratio V
S
= ± 5 to ± 15 V 88 110 95 113 88 110 dB
Quiescent Current T
MIN
to T
MAX
10 12 10 12 10 12 mA
NOTES
1
Input offset voltage specifications are guaranteed after five minutes of operation at T
A
= 25∞C.
2
Bias current specifications are guaranteed maximum at either input after five minutes of operation at T
A
= 25∞C.
3
FPBW = slew rate/2 p V peak.
4
S grade T
MIN
–T
MAX
are tested with automatic test equipment at T
A
= –55∞C and T
A
= +125∞C.
All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at final electrical test. Results from these tests are
used to calculate outgoing quality levels.
Specifications subject to change without notice.