AD7849–SPECIFICATIONS
1
Parameter
RESOLUTION
UNIPOLAR OUTPUT
Relative Accuracy @ +25°C
T
MIN
to T
MAX
Differential Nonlinearity
Gain Error @ +25°C
T
MIN
to T
MAX
Offset Error @ +25°C
T
MIN
to T
MAX
Gain TC
3
Offset TC
3
BIPOLAR OUTPUT
Relative Accuracy @ +25°C
T
MIN
to T
MAX
Differential Nonlinearity
Gain Error @ +25°C
T
MIN
to T
MAX
Offset Error @ +25°C
T
MIN
to T
MAX
Bipolar Zero Error @ +25°C
T
MIN
to T
MAX
Gain TC
3
Offset TC
3
Bipolar Zero TC
3
REFERENCE INPUT
Input Resistance
V
REF+
Range
V
REF–
Range
OUTPUT CHARACTERISTICS
Output Voltage Swing
Resistive Load
Capacitive Load
Output Resistance
Short Circuit Current
DIGITAL INPUTS
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
I
INH
, Input Current
C
IN
, Input Capacitance
DIGITAL OUTPUTS
V
OL
(Output Low Voltage)
V
OH
(Output High Voltage)
Floating State Leakage Current
Floating State Output
Capacitance
POWER REQUIREMENTS
V
DD
V
SS
V
CC
I
DD
I
SS
I
CC
Power Supply Sensitivity
5
Power Dissipation
4
(V
DD
= +14.25 V to +15.75 V; V
SS
= –14.25 V to –15.75 V; V
CC
= +4.75 V to +5.25 V; V
OUT
loaded with 2 kΩ,
2
200 pF to 0 V; V
REF+
= +5 V;
R
OFS
connected to 0 V; T
A
= T
MIN
to T
MAX
, unless otherwise noted)
A
Versions
14
B, T
Versions
16
C
Versions
16
Units
Bits
Test Conditions/Comments
A Versions: 1 LSB = 2 (V
REF+
–V
REF–
)/2
14
B, C, T Versions: 1 LSB = 2 (V
REF+
–V
REF–
)/2
16
V
REF–
= 0 V, V
OUT
= 0 V to +10 V
LSBs typ
LSBs max
LSBs max
LSBs typ
LSBs max
LSBs typ
LSBs max
ppm FSR/°C typ
ppm FSR/°C typ
LSBs typ
LSBs max
LSBs max
LSBs typ
LSBs max
LSBs typ
LSBs max
LSBs typ
LSBs max
ppm FSR/°C typ
ppm FSR/°C typ
ppm FSR/°C typ
kΩ min
kΩ max
Volts
Volts
All Grades Guaranteed Monotonic Over Temperature
V
OUT
Load = 10 MΩ
±
4
±
5
±
0.25
±
1
±
4
±
1
±
6
±
2
±
2
±
2
±
3
±
0.25
±
1
±
4
±
0.5
±
3
±
0.5
±
4
±
2
±
2
±
2
25
43
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 4 to
V
DD
– 4
2
200
0.3
±
25
2.4
0.8
±
10
10
0.4
4.0
±
10
10
+14.25/+15.75
–14.25/–15.75
+4.75/+5.25
5
5
2.5
0.4
100
±
6
±
16
±
0.9
±
4
±
16
±
4
±
24
±
2
±
2
±
3
±
8
±
0.9
±
4
±
16
±
2
±
12
±
2
±
12
±
2
±
2
±
2
25
43
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 4 to
V
DD
– 4
2
200
0.3
±
25
2.4
0.8
±
10
10
0.4
4.0
±
10
10
+14.25/+15.75
–14.25/–15.75
+4.75/+5.25
5
5
2.5
1.5
100
±
4
±
8
±
0.5
±
4
±
16
±
4
±
16
±
2
±
2
±
2
±
4
±
0.5
±
4
±
16
±
2
±
8
±
2
±
8
±
2
±
2
±
2
25
43
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 4 to
V
DD
– 4
2
200
0.3
±
25
2.4
0.8
±
10
10
0.4
4.0
±
10
10
+14.25/+15.75
–14.25/–15.75
+4.75/+5.25
5
5
2.5
1.5
100
V
REF–
= –5 V, V
OUT
= –10 V to +10 V
All Grades Guaranteed Monotonic Over Temperature
V
OUT
Load = 10 MΩ
Resistance from V
REF+
to V
REF–
Typically 34 kΩ
V max
kΩ min
pF max
Ω
typ
mA typ
V min
V max
µA
max
pF max
Volts max
Volts min
µA
max
pF max
V min/V max
V min/V max
V min/V max
mA max
mA max
mA max
LSB/V max
mW typ
I
SINK
= 1.6 mA
I
SOURCE
= 400
µA
To 0 V
To 0 V
Voltage Range: –10 V to +10 V
V
OUT
Unloaded, V
INH
= V
DD
– 0.1 V, V
INL
= 0.1 V
V
OUT
Unloaded, V
INH
= V
DD
– 0.1 V, V
INL
= 0.1 V
V
INH
= V
DD
– 0.1 V, V
INL
= 0.1 V
V
OUT
Unloaded
NOTES
1
Temperature ranges: A, B, C Versions: –40°C to +85°C; T Version: –55°C to +125°C.
2
Minimum load for T Version is 3 kΩ.
3
Guaranteed by design and characterization, not production tested.
4
The AD7849 is functional with power supplies of
±
12 V. See Typical Performance Curves.
5
Sensitivity of Gain Error, Offset Error and Bipolar Zero Error to V
DD
, V
SS
variations.
Specifications subject to change without notice.
–2–
REV. B
AD [ ANALOG DEVICES ]
