(VDD = +14.25 V to +15.75 V; VSS = –14.25 V to –15.75 V; VCC = +4.75 V to +5.25 V.
OUT loaded with 2 k⍀, 1000 pF to 0 V; VREF+ = +5 V; RIN connected to 0 V. All
specifications TMIN to TMAX, unless otherwise noted.)
V
AD7846–SPECIFICATIONS1
Parameter
J, A Versions
K, B Versions
Unit
Test Conditions/Comments
RESOLUTION
16
16
Bits
UNIPOLAR OUTPUT
Relative Accuracy @ +25°C
TMIN to TMAX
VREF– = 0 V, VOUT = 0 V to +10 V
1 LSB = 153 µV
12
16
1
4
8
0.5
LSB typ
LSB max
LSB max
Differential Nonlinearity Error
All Grades Guaranteed Monotonic
Gain Error @ +25°C
12
16
12
16
1
6
16
6
16
1
LSB typ
LSB max
LSB typ
LSB max
ppm FSR/°C typ
ppm FSR/°C typ
VOUT Load = 10 MΩ
T
MIN to TMAX
Offset Error @ +25°C
TMIN to TMAX
Gain TC2
Offset TC2
1
1
BIPOLAR OUTPUT
VREF– = –5 V, VOUT = –10 V to +10 V
1 LSB = 305 µV
Relative Accuracy @ +25°C
6
8
2
4
LSB typ
LSB max
T
MIN to TMAX
Differential Nonlinearity Error
Gain Error @ +25°C
TMIN to TMAX
Offset Error @ +25°C
TMIN to TMAX
1
6
16
6
16
6
12
1
1
0.5
4
16
4
12
4
8
1
1
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
All Grades Guaranteed Monotonic
V
OUT Load = 10 MΩ
V
OUT Load = 10 MΩ
Bipolar Zero Error @ +25°C
T
MIN to TMAX
Gain TC2
Offset TC2
Bipolar Zero TC2
1
1
REFERENCE INPUT
Input Resistance
20
40
20
40
kΩ min
kΩ max
Volts
Resistance from VREF+ to VREF–
Typically 30 kΩ
V
V
REF+ Range
REF– Range
VSS + 6 to
VDD – 6
VSS + 6 to
VDD – 6
VSS + 6 to
VDD – 6
VSS + 6 to
VDD – 6
Volts
OUTPUT CHARACTERISTICS
Output Voltage Swing
VSS + 4 to
VSS + 4 to
VDD – 3
2
1000
0.3
V max
V
DD – 3
Resistive Load
2
kΩ min
pF max
Ω typ
To 0 V
To 0 V
Capacitive Load
Output Resistance
Short Circuit Current
1000
0.3
25
25
mA typ
To 0 V or Any Power Supply
DIGITAL INPUTS
V
IH (Input High Voltage)
2.4
0.8
10
2.4
0.8
10
V min
VIL (Input Low Voltage)
IIN (Input Current)
V max
µA max
pF max
CIN (Input Capacitance)2
10
10
DIGITAL OUTPUTS
VOL (Output Low Voltage)
VOH (Output High Voltage)
Floating State Leakage Current
Floating State Output Capacitance2
0.4
4.0
10
0.4
4.0
10
Volts max
Volts min
µA max
ISINK = 1.6 mA
ISOURCE = 400 µA
DB0–DB15 = 0 to VCC
10
10
pF max
POWER REQUIREMENTS3
VDD
VSS
VCC
IDD
+11.4/+15.75
–11.4/–15.75
+4.75/+5.25
5
+11.4/+15.75
–11.4/–15.75
+4.75/+5.25
5
V min/V max
V min/V max
V min/V max
mA max
VOUT Unloaded
VOUT Unloaded
ISS
ICC
5
1
1.5
100
5
1
1.5
100
mA max
mA max
LSB/V max
mW typ
Power Supply Sensitivity4
Power Dissipation
VOUT Unloaded
NOTES
1Temperature ranges as follows: J, K Versions: 0°C to +70°C; A, B Versions: –40°C to +85°C
2Guaranteed by design and characterization, not production tested.
3The AD7846 is functional with power supplies of 12 V. See Typical Performance Curves.
4Sensitivity of Gain Error, Offset Error and Bipolar Zero Error to VDD, VSS variations.
Specifications subject to change without notice.
–2–
REV. E
ADI [ ADI ]
