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AD7674AST 数据表(PDF) 4 Page - Analog Devices

部件名 AD7674AST
功能描述  18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7674AST 数据表(HTML) 4 Page - Analog Devices

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AD7674
Rev. A | Page 4 of 28
Parameter
Conditions
Min
Typ
Max
Unit
REFERENCE
External Reference Voltage Range
REF
3
4.096
AVDD + 0.1
V
REF Voltage with Reference Buffer
REFBUFIN = 2.5 V
4.05
4.096
4.15
V
Reference Buffer Input Voltage Range
REFBUFIN
1.8
2.5
2.6
V
REFBUFIN Input Current
–1
+1
μA
REF Current Drain
800 kSPS throughput
330
μA
DIGITAL INPUTS
Logic Levels
VIL
–0.3
+0.8
V
VIH
+2.0
DVDD + 0.3
V
IIL
–1
+1
μA
IIH
–1
+1
μA
DIGITAL OUTPUTS
Data Format5
Pipeline Delay6
VOL
ISINK = 1.6 mA
0.4
V
VOH
ISOURCE = –500 μA
OVDD – 0.6
V
POWER SUPPLIES
Specified Performance
AVDD
4.75
5
5.25
V
DVDD
4.75
5
5.25
V
OVDD
2.7
DVDD + 0.37
V
Operating Current8
800 kSPS throughput
AVDD
16
mA
DVDD9
6.5
mA
OVDD9
50
μA
POWER DISSIPATION9
PDBUF high @ 500 kSPS10
78
90
mW
PDBUF high @ 1 kSPS10
160
μW
PDBUF high @ 800 kSPS8
114
126
mW
PDBUF low @ 800 kSPS8
126
138
mW
TEMPERATURE RANGE11
Specified Performance
TMIN to TMAX
–40
+85
°C
1 See Analog Inputs section.
2 LSB means Least Significant Bit. With the ±4.096 V input range, 1 LSB is 31.25 μV.
3 See Definitions of Specifications section. The nominal gain error is not centered at zero and is −0.029% of FSR. This specification is the deviation from this nominal
value. These specifications do not include the error contribution from the external reference, but do include the error contribution from the reference buffer if used.
4 All specifications in dB are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale unless otherwise specified.
5 Data Format Parallel or Serial 18-Bit.
6 Conversion results are available immediately after completed conversion.
7 The max should be the minimum of 5.25 V and DVDD + 0.3 V.
8 In Warp mode.
9 Tested in Parallel Reading mode.
10 In Impulse mode.
11 Contact factory for extended temperature range.


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