AD688
Rev. B | Page 3 of 16
SPECIFICATIONS
Typical @ 25°C, +10 V output, V
S
= ±15 V unless otherwise noted.
1
Specifications shown in boldface are tested on all production units at
final electrical test. Results from those tests are used to calculate outgoing quality levels. All min and max specifications are guaranteed.
Table 1.
AD688AQ AD688BQ AD688ARWZ
Min Typ Max Min Typ Max Min Typ Max Unit
OUTPUT VOLTAGE ERROR
+10 V, −10 V Outputs −5 +5 −2 +2 −4 +4
mV
±10 V TRACKING ERROR
−3 +3 −1.5 +1.5 −1.5 +1.5
mV
OUTPUT VOLTAGE DRIFT
+10 V, −10 V Outputs
0°C to +70°C (A, B) ±2
–1.5 +1.5
ppm/°C
−40°C to +85°C (A, B)
−3 +3 –3 +3 –8
+8
ppm/°C
GAIN ADJ AND BAL ADJ
2
Trim Range ± 5 ±5 ±5 mV
Input Resistance 150 150 150 kΩ
LINE REGULATION
T
MIN
to T
MAX
3
–200 +200 –200 +200 –200 +200
µV/V
LOAD REGULATION
T
MIN
to T
MAX
+10 V Output, 0<I
OUT
<10 mA ±50 ±50 ±50 µV/mA
−10 V Output, −10<I
OUT
<0 mA ±50 ±50 ±50 µV/mA
SUPPLY CURRENT
T
MIN
to T
MAX
9
12
9
12
12
mA
Power Dissipation 270 360 270 360 360 mW
OUTPUT NOISE (ANY OUTPUT)
0.1 Hz to 10 Hz 6 6 6 µV p-p
Spectral Density, 100 Hz 140 140 140 nV√Hz
LONG-TERM STABILITY (@ 25°C) 15 15 15 ppm/1000 hours
BUFFER AMPLIFIERS
Offset Voltage 100 100 100 µV
Offset Voltage Drift 1 1 1 µV/°C
Bias Current 20 20 20 nA
Open-Loop Gain 110 110 110 dB
Output Current A3, A4
−10 +10 −10 +10 −10 +10
mA
Common-Mode Rejection (A3, A4)
V
CM
= 1 V p-p 100 100 100 dB
Short-Circuit Current 50 50 50 mA
TEMPERATURE RANGE
Specified Performance
A, B Grades −40 +85 −40 +85 −40 +85 °C
1
See for output configuration. Figure 4
2
Gain and balance adjustments guaranteed capable of trimming output voltage error and symmetry error to zero.
3
Test Conditions: +V
S
= +18 V, −V
S
= –18 V; +V
S
= +13.5 V, −V
S
= −13.5 V.
