AD7834/AD7835
Rev. D | Page 3 of 28
SPECIFICATIONS
VCC = 5 V ± 5%; VDD = 15 V ± 5%; VSS = 15 V ± 5%; AGND = DGND = 0 V; TA1 = TMIN to TMAX, unless otherwise noted. Table 1.
Parameter
A
B
S
Unit
Test Conditions/Comments
ACCURACY
Resolution
14
Bits
Relative Accuracy
±2
±1
±2
LSB max
Differential Nonlinearity
±0.9
LSB max
Guaranteed monotonic over temperature.
Full-Scale Error
VREF(+) = +7 V, VREF() = 7 V.
TMIN to TMAX
±5
±8
mV max
Zero-Scale Error
±4
±5
mV max
VREF(+) = +7 V, VREF() = 7 V.
Gain Error
±0.5
mV typ
VREF(+) = +7 V, VREF() = 7 V.
Gain Temperature
4
ppm FSR/°C typ
20
ppm FSR/°C max
50
μV max
REFERENCE INPUTS
DC Input Resistance
30
MΩ typ
Input Current
±1
μA max
Per input.
VREF(+) Range
0/8.192
V min/max
VREF() Range
8.192/0
V min/max
VREF(+) VREF()
5/14
7/14
5/14
V min/max
For specified performance. Can go as low as
0 V, but performance is not guaranteed.
DEVICE SENSE GROUND INPUTS
Input Current
±2
μA max
Per input. VDSG = 2 V to +2 V.
DIGITAL INPUTS
VINH, Input High Voltage
2.4
V min
VINL, Input Low Voltage
0.8
V max
IINH, Input Current
±10
μA max
CIN, Input Capacitance
10
pF max
POWER REQUIREMENTS
VCC
5.0
V nom
±5% for specified performance.
VDD
15.0
V nom
±5% for specified performance.
VSS
15.0
V nom
±5% for specified performance.
Power Supply Sensitivity
ΔFull Scale/ΔVDD
110
dB typ
ΔFull Scale/ΔVSS
100
dB typ
ICC
0.2
0.5
mA max
VINH = VCC, VINL = DGND.
3
mA max
AD7834: VINH = 2.4 V min, VINL = 0.8 V max.
6
mA max
AD7835: VINH = 2.4 V min, VINL = 0.8 V max.
IDD
13
15
mA max
AD7834: outputs unloaded.
15
mA max
AD7835: outputs unloaded.
ISS
13
15
mA max
Outputs unloaded.
1 Temperature range for A, B, and C versions is 40°C to +85°C.
2 Guaranteed by design.