Datasheet
AD694–SPECIFICATIONS
Model AD694JN/AQ/AR AD694BQ/BR
Min Typ Max Min Typ Max Unit
INPUT CHARACTERISTICS
Input Voltage Range –0.2 V
S
–2.0 V V
S
–2.5 V –0.2 V
S
–2.0 V V
S
–2.5 V V
Input Bias Current
Either Input, T
MIN
to T
MAX
1.5 5 1.5 5 nA
Offset Current, T
MIN
to T
MAX
± 0.1 ⴞ1 ± 0.1 ⴞ1 nA
Offset Current Drift ± 1.0 ± 5.0 ± 1.0 ± 5.0 pA/°C
Input Impedance 5 5 MΩ
OUTPUT CHARACTERISTICS
Operating Current Range 0 23 0 23 mA
Specified Performance 4 20 4 20 mA
Output Voltage Compliance V
S
–36 V V
S
–2 V V
S
–36 V V
S
2 V V
Output Impedance, 4–20 mA 40.0 50.0 40.0 50.0 MΩ
Current Limit (@ 2 × FS Overdrive 24 44 24 44 mA
Slew Rate 1.3 1.3 mA/µs
SPAN AND ZERO ACCURACY
1
4 mA Offset Error @ 0 V Input
2
Error from 4.000 mA, 4 mA On ± 10 ⴞ20 ± 5 ⴞ10 µA
Error from 0.000 mA, 4 mA Off 0 +10 +20 0+5+10 µA
T
MIN
to T
MAX
± 10 ⴞ40 ± 5 ⴞ20 µA
vs. Supply (2 V Span/10 V Span) 0.3/0.05 0.8/0.4 0.3/0.05 0.8/0.4 µA/V
Trim Range, 4 mA Zero 2.0 4.8 2.0 4.8 mA
Span
Nominal Transfer Function
Input FS = 2 V 8.0 8.0 mA/V
Input FS = 10 V 1.6 1.6 mA/V
Transfer Function Error from Nom,
Input FS = 2 V, 10 V ± 0.1 ⴞ0.3 ± 0.05 ⴞ0.15 % of Span
T
MIN
to T
MAX
± 0.002 ± 0.005 ± 0.001 ⴞ0.0025 % of Span/°C
vs. Supply ± 0.001 ⴞ0.005 ± 0.001 ⴞ0.005 % of Span/V
Nonlinearity
3
± 0.005 ⴞ0.015 ± 0.001 ⴞ0.005 % of Span
4 mA On: Max Pin 9 Voltage 0.8 0.8 V
4 mA Off: Min Pin 9 Voltage 3.0 2.5 3.0 2.5 V
VOLTAGE REFERENCE
Output Voltage: 10 V Reference 9.960 10.000 10.040 9.980 10.000 10.020 V
Output Voltage: 2 V Reference 1.992 2.000 2.008 1.996 2.000 2.004 V
T
MIN
to T
MAX
4
30 50 20 30 ppm/°C
vs. Load, V
REF
= 2 V, 10 V 0.15 0.50 0.15 0.50 mV/mA
vs. Supply, V
REF
= 2 V, 10 V ± 0.001 ⴞ0.005 ± 0.001 ⴞ0.005 %/V
Output Current
Source 5 5mA
Sink 0.2 0.2 mA
ALARM CHARACTERISTICS
V
CE(SAT)
@ 2.5 mA 0.35 0.35 V
Leakage Current ⴞ1 ⴞ1 µA
Alarm Pin Current (Pin 10) 20 20 mA
POWER REQUIREMENTS
Specified Performance 24 24 V
Operating Range
2 V FS, V
REF
= 2 V 4.5 36 4.5 36 V
2 V, 10 V FS, V
REF
= 2 V, 10 V 12.5 36 12.5 36 V
Quiescent Current, 4 mA Off 1.5 2.0 1.5 2.0 mA
TEMPERATURE RANGE
Specified Performance
5
AD694AQ/BQ/AR/BR –40 +85 –40 +85 °C
AD694JN 0 +70 0 +70 °C
Operating AD694AQ/BQ/AR/BR –55 +125 –55 +125 °C
AD694JN –40 +85 –40 +85 °C
(@ +25ⴗC, R
L
= 250 ⍀, and V
S
= +24 V, unless otherwise noted.)
REV. B
–2–