EVAL-AD7782EB Просмотр технического описания (PDF) - Analog Devices
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EVAL-AD7782EB Datasheet PDF : 12 Pages
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AD7782–SPECIFICATIONS (VDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, REFIN(+) = 2.5 V; REFIN(–) = GND; GND = 0 V;
XTAL1/XTAL2 = 32.768 kHz Crystal; all specifications TMIN to TMAX unless otherwise noted.)
Parameter
ADC CHANNEL SPECIFICATION
Output Update Rate
ADC CHANNEL
No Missing Codes2
Resolution
Output Noise
Integral Nonlinearity
Offset Error
Offset Error Drift vs. Temperature
Full-Scale Error
Gain Drift vs. Temperature
Power Supply Rejection (PSR)
ANALOG INPUTS
Differential Input Voltage Ranges
ADC Range Matching
Absolute AIN Voltage Limits
Analog Input Current2
DC Input Current
DC Input Current Drift
Normal-Mode Rejection2, 3
@ 50 Hz
@ 60 Hz
Common-Mode Rejection
@ DC
@ 50 Hz2
@ 60 Hz2
REFERENCE INPUT
REFIN Voltage
REFIN Voltage Range2
Absolute REFIN Voltage Limits2
Average Reference Input Current
Average Reference Input Current Drift
Normal-Mode Rejection2, 3
@ 50 Hz
@ 60 Hz
Common-Mode Rejection
@ DC
@ 50 Hz
@ 60 Hz
LOGIC INPUTS
All Inputs Except SCLK and XTAL12
VINL, Input Low Voltage
VINH, Input High Voltage
SCLK Only (Schmitt-Triggered Input)2
VT(+)
VT(–)
VT(+) – VT(–)
VT(+)
VT(–)
VT(+) – VT(–)
AD7782B
19.79
24
16
18
See Table I
± 10
±3
± 10
± 10
± 0.5
100
85
± 160
± 2.56
±2
GND + 100 mV
VDD – 100 mV
±1
±5
60
94
105
100
100
2.5
1
VDD
GND – 30 mV
VDD + 30 mV
0.5
± 0.01
60
94
100
110
110
0.8
0.4
2.0
1.4/2
0.8/1.4
0.3/0.85
0.95/2
0.4/1.1
0.3/0.85
Unit
Test Conditions
Hz nom
Bits min
Bits p-p
Bits p-p
ppm of FSR max
µV typ
nV/°C typ
µV typ
ppm/°C typ
dB typ
dB typ
± 160 mV Range, RANGE = 0
± 2.56 V Range, RANGE = 1
2 × 1.024 REFIN
Typically 2 ppm FSR =
Gain
AIN(+) = AIN(–) = 2.5 V
VDD = 3 V
Input Range = ± 160 mV, VIN = 1/16 V
Input Range = ± 2.56 V, VIN = 1 V
mV nom
V nom
µV typ
V min
V max
nA max
pA /°C typ
dB min
dB min
dB min
dB min
dB min
RANGE = 0
RANGE = 1
Input Voltage = 159 mV on Both Ranges
50 Hz ± 1 Hz
60 Hz ± 1 Hz
Input Range = ± 160 mV, VIN = 1/16 V
125 dB typ, 110 dB typ when Input Range = ± 2.56 V
50 Hz ± 1 Hz
60 Hz ± 1 Hz
V nom
V min
V max
V min
V max
µA/V typ
nA/V/°C typ
dB min
dB min
dB typ
dB typ
dB typ
REFIN = REFIN(+) – REFIN(–)
50 Hz ± 1 Hz
60 Hz ± 1 Hz
Input Range = ± 160 mV, VIN = 1/16 V
50 Hz ± 1 Hz
60 Hz ± 1 Hz
V max
V max
V min
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
VDD = 5 V
VDD = 3 V
VDD = 3 V or 5 V
VDD = 5 V
VDD = 5 V
VDD = 5 V
VDD = 3 V
VDD = 3 V
VDD = 3 V
–2–
REV. 0
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