Datasheet

J Grade K Grade A Grade B Grade T Grade
Model (AD674B or AD774B) Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit
RESOLUTION 12 12 12 12 12 Bits
LINEARITY ERROR @ 25°C 1 1/2 1 1/2 1/2 LSB
T
MIN
to T
MAX
1 1/2 1 1/2 1 LSB
DIFFERENTIAL LINEARITY ERROR
(Minimum Resolution for Which No
Missing Codes are Guaranteed) 12 12 12 12 12 Bits
UNIPOLAR OFFSET
1
@ 25°C 2 2 2 2 2 LSB
BIPOLAR OFFSET
1
@ 25°C 6 3 6 3 3 LSB
FULL-SCALE CALIBRATION ERROR
1, 2
@ 25°C (with Fixed 50 Ω Resistor
from REF OUT to REF IN) 0.1 0.25 0.1 0.125 0.1 0.25 0.1 0.125 0.1 0.125 % of FS
TEMPERATURE RANGE 0 70 0 70 –40 +85 –40 +85 –55 +125 °C
TEMPERATURE DRIFT
3
(Using Internal Reference)
Unipolar 2 1 2 1 1 LSB
Bipolar Offset 2 1 2 1 2 LSB
Full-Scale Calibration 6 2 8 5 7 LSB
POWER SUPPLY REJECTION
Max Change in Full-Scale Calibration
V
CC
= +15 V ± 1.5 V or +12 V ± 0.6 V 2 1 2 1 1 LSB
V
LOGIC
= +5 V ± 0.5 V 1/2 1/2 1/2 1/2 1/2 LSB
V
EE
= –15 V ± 1.5 V or –12 V ± 0.6 V 2 1 2 1 1 LSB
ANALOG INPUT
Input Ranges
Bipolar –5 +5 –5 +5 –5 +5 –5 +5 –5 +5 V
–10 +10 –10 +10 –10 +10 –10 +10 –10 +10 V
Unipolar 0 10 0 10 0 10 0 10 0 10 V
0 20 0 20 0 20 0 20 0 20 V
Input Impedance
10 V Span 3 5 735 735 735 735 7 kΩ
20 V Span 6 10 14 6 10 14 6 10 14 6 10 14 6 10 14 kΩ
POWER SUPPLIES
Operating Range
V
LOGIC
4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 V
V
CC
11.4 16.5 11.4 16.5 11.4 16.5 11.4 16.5 11.4 16.5 V
V
EE
–16.5 –11.4 –16.5 –11.4 –16.5 –11.4 –16.5 –11.4 –16.5 –11.4 V
Operating Current
I
LOGIC
3.5 7 3.5 7 3.5 7 3.5 7 3.5 7 mA
I
CC
3.5 7 3.5 7 3.5 7 3.5 7 3.5 7 mA
I
EE
10 14 10 14 10 14 10 14 10 14 mA
POWER CONSUMPTION 220 375 220 375 220 375 220 375 220 375 mW
4
175 175 175 175 175 mW
5
INTERNAL REFERENCE VOLTAGE 9.9 10.0 10.1 9.9 10.0 10.1 9.9 10.0 10.1 9.9 10.0 10.1 9.9 10.0 10.1 V
Output Current
(Available for External Loads) 2.0 2.0 2.0 2.0 2.0 mA
(External Load Should Not
Change During the Conversion)
NOTES
1
Adjustable to zero.
2
Includes internal voltage reference error.
3
Maximum change from 25°C value to the value at T
MIN
or T
MAX
.
4
Tested with REF OUT tied to REF IN through 50 Ω resistor, V
CC
= +16.5 V, V
EE
= –16.5 V, V
LOGIC
= +5.5 V, and outputs in high-Z mode.
5
Tested with REF OUT tied to REF IN through 50 Ω resistor, V
CC
= +12 V, V
EE
= –12 V, V
LOGIC
= +5 V, and outputs in high-Z mode.
Specifications subject to change without notice.
Specifications shown in boldface are tested on all devices at final electrical test at T
MIN
, 25°C, and T
MAX
. Results from those tests are used to calculate outgoing quality levels. All min and
max specifications are guaranteed, although only those shown in boldface are tested.
AD674B/AD774B–SPECIFICATIONS
(T
MIN
to T
MAX
with V
CC
= +15 V  10% or +12 V  5%,
V
LOGIC
= +5 V  10%, V
EE
= –15 V  10% or –12 V  5%, unless otherwise noted.)
REV. C
–2–