AD7846–SPECIFICATIONS
1
Parameter
RESOLUTION
UNIPOLAR OUTPUT
Relative Accuracy @ +25°C
T
MIN
to T
MAX
Differential Nonlinearity Error
Gain Error @ +25°C
T
MIN
to T
MAX
Offset Error @ +25°C
T
MIN
to T
MAX
Gain TC
2
Offset TC
2
BIPOLAR OUTPUT
Relative Accuracy @ +25°C
T
MIN
to T
MAX
Differential Nonlinearity Error
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
2
Offset TC
2
Bipolar Zero TC
2
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
IH
(Input High Voltage)
V
IL
(Input Low Voltage)
I
IN
(Input Current)
C
IN
(Input Capacitance)
2
DIGITAL OUTPUTS
V
OL
(Output Low Voltage)
V
OH
(Output High Voltage)
Floating State Leakage Current
Floating State Output Capacitance
2
POWER REQUIREMENTS
3
V
DD
V
SS
V
CC
I
DD
I
SS
I
CC
Power Supply Sensitivity
4
Power Dissipation
J, A Versions
16
±
12
±
16
±
1
±
12
±
16
±
12
±
16
±
1
±
1
±
6
±
8
±
1
±
6
±
16
±
6
±
16
±
6
±
12
±
1
±
1
±
1
20
40
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 4 to
V
DD
– 3
2
1000
0.3
±
25
2.4
0.8
±
10
10
0.4
4.0
±
10
10
+11.4/+15.75
–11.4/–15.75
+4.75/+5.25
5
5
1
1.5
100
(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 k , 1000 pF to 0 V; V
REF+
= +5 V; R
IN
connected to 0 V. All
specifications T
MIN
to T
MAX
, unless otherwise noted.)
Unit
Bits
LSB typ
LSB max
LSB max
LSB typ
LSB max
LSB typ
LSB max
ppm FSR/°C typ
ppm FSR/°C typ
LSB typ
LSB max
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
LSB max
ppm FSR/°C typ
ppm FSR/°C typ
ppm FSR/°C typ
kΩ min
kΩ max
Volts
Volts
V
REF –
= 0 V, V
OUT
= 0 V to +10 V
1 LSB = 153
µV
All Grades Guaranteed Monotonic
V
OUT
Load = 10 MΩ
Test Conditions/Comments
K, B Versions
16
±
4
±
8
±
0.5
±
6
±
16
±
6
±
16
±
1
±
1
±
2
±
4
±
0.5
±
4
±
16
±
4
±
12
±
4
±
8
±
1
±
1
±
1
20
40
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 6 to
V
DD
– 6
V
SS
+ 4 to
V
DD
– 3
2
1000
0.3
±
25
2.4
0.8
±
10
10
0.4
4.0
±
10
10
+11.4/+15.75
–11.4/–15.75
+4.75/+5.25
5
5
1
1.5
100
V
REF–
= –5 V, V
OUT
= –10 V to +10 V
1 LSB = 305
µV
All Grades Guaranteed Monotonic
V
OUT
Load = 10 MΩ
V
OUT
Load = 10 MΩ
Resistance from V
REF+
to V
REF –
Typically 30 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
DB0–DB15 = 0 to V
CC
To 0 V
To 0 V
To 0 V or Any Power Supply
V
OUT
Unloaded
V
OUT
Unloaded
V
OUT
Unloaded
NOTES
1
Temperature ranges as follows: J, K Versions: 0°C to +70°C; A, B Versions: –40°C to +85°C
2
Guaranteed by design and characterization, not production tested.
3
The AD7846 is functional with power supplies of
±
12 V. See Typical Performance Curves.
4
Sensitivity of Gain Error, Offset Error and Bipolar Zero Error to V
DD
, V
SS
variations.
Specifications subject to change without notice.
–2–
REV. E
AD [ ANALOG DEVICES ]
