Datasheet

DC SPECIFICATIONS
AD779J/A/S AD779K/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 14 14 Bits
Integral Nonlinearity (INL) ±2 ±1 ±2 LSB
Differential Nonlinearity (DNL) 14 14 Bits
Unipolar Zero Error
1
(@ +25°C) 0.08 0.05 0.07 % FSR*
Bipolar Zero Error
1
(@ +25°C) 0.08 0.05 0.07 % FSR
Gain Error
1, 2
(@ +25°C) 0.12 0.09 0.11 % FSR
Temperature Drift
Unipolar Zero
3
J, K Grades 0.04 0.04 0.05 % FSR
A, B Grades 0.05 0.05 0.07 % FSR
S, T Grades 0.09 0.09 0.10 % FSR
Bipolar Zero
3
J, K Grades 0.02 0.02 0 04 % FSR
A, B Grades 0.04 0.04 0.06 % FSR
S, T Grades 0.08 0.08 0.09 % FSR
Gain
3
J, K Grades 0.09 0.09 0.11 % FSR
A, B Grades 0.10 0.10 0.16 % FSR
S, T Grades 0.20 0.20 0.25 % FSR
Gain
4
J, K Grades 0.04 0.04 0.05 % FSR
A, B Grades 0.05 0.05 0.07 % FSR
S, T Grades 0.09 0.09 0.10 % FSR
ANALOG INPUT
Input Ranges
Unipolar Mode 0 +10 0 +10 V
Bipolar Mode –5 +5 –5 +5 V
Input Resistance 10 10 MΩ
Input Capacitance 10 10 pF
Input Settling Time 1.5 1.5 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% ±6 ±6 LSB
V
EE
= –12 V ± 5% ±6 ±6 LSB
V
DD
= +5 V ± 10% ±6 ±6 LSB
Operating Current
I
CC
18 20 18 20 mA
I
EE
25 34 25 34 mA
I
DD
8 12 8 12 mA
Power Consumption 560 745 560 745 mW
NOTES
1
Adjustable to zero. See Figures 5 and 6.
2
Includes internal voltage reference error.
3
Includes internal voltage reference drift.
4
Excludes internal voltage reference drift.
5
With maximum external load applied.
*% FSR = percent of full-scale range.
Specifications subject to change without notice.
AD779
REV. B
–3–
(T
MIN
to T
MAX
, V
CC
= +12 V 6 5%, V
EE
= –12 V 6 5%, V
DD
= +5 V 6 10% unless otherwise noted)