參數(shù)資料
型號： EVAL-AD7708EB
廠商： Analog Devices, Inc.
英文描述： 8-/10-Channel, Low Voltage, Low Power, ADCs
中文描述： 8-/10-Channel，低電壓，低功耗，ADC的
文件頁數(shù)： 4/44頁
文件大?。?/td> 339K
代理商： EVAL-AD7708EB
REV. 0
–4–
AD7718–SPECIFICATIONS
1
2.5 V ; REFIN(–) = AGND; AGND = DGND = 0 V; XTAL1/XTAL2 = 32.768 kHz Crystal Input Buffer Enabled. All specifications T
MIN
to T
MAX
unless otherwise noted.)
(AV
DD
= 2.7 V to 3.6 V or 4.75 V to 5.25 V, DV
DD
= 2.7 V to 3.6 V or 4.75 V to 5.25 V, REFIN(+) =
Parameter
B Grade
Unit
Test Conditions
AD7718 (CHOP ENABLED)
Output Update Rate
5.4
105
24
13
18
See Tables in
ADC Description
±
10
±
3
10
±
10
±
0.5
Hz min
Hz max
Bits min
Bits p-p
Bits p-p
CHOP
= 0
No Missing Codes
2
Resolution
20 Hz Update Rate
±
20 mV Range, 20 Hz Update Rate
±
2.56 V Range, 20 Hz Update Rate
Output Noise and Update Rates
Integral Nonlinearity
Offset Error
3
Offset Error Drift vs. Temp
4
Full-Scale Error
3
Gain Drift vs. Temp
4
ppm of FSR max
μ
V typ
nV/
°
C typ
μ
V/
°
C typ
ppm/
°
C typ
2 ppm Typical
ANALOG INPUTS
Differential Input Full-Scale Voltage
±
1.024
×
REFIN/GAIN
V nom
REFIN Refers to Both REFIN1 and
REFIN2. REFIN = REFIN(+) REFIN(–)
GAIN = 1 to 128
Analog Input = 18 mV
AIN1–AIN10 and AINCOM with
NEGBUF = 1
NEGBUF = 0
Range Matching
Absolute AIN Voltage Limits
±
2
AGND + 100 mV
AV
DD
– 100 mV
AGND – 30 mV
AV
DD
+ 30 mV
μ
V typ
V min
V max
V min
V max
Absolute AINCOM Voltage Limits
Analog Input Current
AIN1–AIN10 and AINCOM with
NEGBUF = 1
DC Input Current
2
DC Input Current Drift
AINCOM Input Current
DC Input Current
2
DC Bias Current Drift
Normal-Mode Rejection
2
@ 50 Hz
@ 60 Hz
Common-Mode Rejection
@ DC
±
1
±
5
nA max
pA/
°
C typ
NEGBUF = 0
±
2.56 V Range
±
125
±
2
nA/V typ
pA/V/
°
C typ
100
100
dB min
dB min
50 Hz
±
1 Hz, SF Word = 82
60 Hz
±
1 Hz, SF Word = 68
90
dB min
100 dB typ, Analog Input = 1 V,
Input Range =
±
2.56 V
110 dB typ on
±
20 mV Range
50 Hz
±
1 Hz, 20 Hz Update Rate
60 Hz
±
1 Hz, 20 Hz Update Rate
@ 50 Hz
2
@ 60 Hz
2
100
100
dB min
dB min
REFERENCE INPUTS (REFIN1 AND REFIN2)
REFIN(+) to REFIN(–) Voltage
2.5
V nom
REFIN Refers to Both REFIN1 and
REFIN2
REFIN(+) to REFIN(–) Range
2
1
AV
DD
AGND – 30 mV
AV
DD
+ 30 mV
±
0.5
±
0.01
V min
V max
V min
V max
μ
A/V typ
nA/V/
°
C typ
REFIN Common-Mode Range
Reference DC Input Current
2
Reference DC Input Current Drift
Normal-Mode Rejection
2
@ 50 Hz
@ 60 Hz
Common-Mode Rejection
2
@ DC
@ 50 Hz
@ 60 Hz
100
100
dB min
dB min
50 Hz
±
1 Hz, SF Word = 82
60 Hz
±
1 Hz, SF Word = 68
Input Range =
±
2.56 V
Analog Input = 1 V
50 Hz
±
1 Hz, 20 Hz Update Rate
60 Hz
±
1 Hz, 20 Hz Update Rate
110
110
110
dB typ
dB typ
dB typ
LOGIC INPUTS
5
All Inputs Except SCLK and XTAL1
2
V
INL
, Input Low Voltage
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
0.8
0.4
2.0
V max
V max
V min
DV
DD
= 5 V
DV
DD
= 3 V
DV
DD
= 3 V or 5 V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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