Datasheet

DC SPECIFICATIONS
AD678J/A/S AD678K/B/T
Parameter Min Typ Max Min Typ Max Units
TEMPERATURE RANGE
J, K Grades 0 +70 0 +70 °C
A, B Grades –40 +85 –40 +85 °C
S, T Grades –55 +125 –55 +125 °C
ACCURACY
Resolution 12 12 Bits
Integral Nonlinearity (INL) ± 1 ±0.7 ± 1 LSB
Differential Nonlinearity (DNL) 12 12 Bits
Unipolar Zero Error (@ +25°C)
1
± 4 ± 2 ± 3 LSB
Bipolar Zero Error (@ +25°C)
1
± 4 ± 3 ± 5 LSB
Gain Error (@ +25°C)
1, 2
± 4 ± 3 ± 6 LSB
Temperature Drift
Unipolar/Bipolar Zero
J, K Grades ± 2 ± 2 ± 4 LSB
A, B Grades ± 4 ± 3 ± 4 LSB
S, T Grades ± 5 ± 4 ± 5 LSB
Gain
3
J, K Grades ± 4 ± 4 ± 6 LSB
A, B Grades ± 7 ± 5 ± 9 LSB
S, T Grades ± 10 ± 8 ± 10 LSB
Gain
4
J, K Grades ± 2 ± 2 ± 4 LSB
A, B Grades ± 4 ± 3 ± 4 LSB
S, T Grades ± 6 ± 5 ± 6 LSB
ANALOG INPUT
Input Ranges
Unipolar Range 0 +10 0 +10 V
Bipolar Range –5 +5 –5 +5 V
Input Resistance 10 10 MΩ
Input Capacitance 10 10 pF
Input Settling Time 1 1 µs
Aperture Delay 10 10 ns
Aperture Jitter 150 150 ps
INTERNAL VOLTAGE REFERENCE
Output Voltage
5
4.98 5.02 4.98 5.02 V
External Load
Unipolar Mode +1.5 +1.5 mA
Bipolar Mode +0.5 +0.5 mA
POWER SUPPLIES
Power Supply Rejection
V
CC
= +12 V ± 5% ± 2 ± 2 LSB
V
EE
= –12 V ± 5% ± 2 ± 2 LSB
V
DD
= +5 V ± 10% ± 2 ± 2 LSB
Operating Current
I
CC
18 20 18 20 mA
I
EE
25 34 25 34 mA
I
DD
812 812mA
Power Consumption 560 745 560 745 mW
NOTES
1
Adjustable to zero.
2
Includes internal voltage reference error.
3
Includes internal voltage reference drift.
4
Excludes internal voltage reference drift.
5
With maximum external load applied.
Specifications subject to change without notice.
AD678
(T
MIN
to T
MAX
, V
CC
= +12 V ⴞ 5%, V
EE
= –12 V ⴞ 5%, V
DD
= +5 V ⴞ 10% unless otherwise noted)
REV. C
–3–