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AD7674 Datasheet(PDF) 4 Page - Analog Devices

Part No. AD7674
Description  18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7674 Datasheet(HTML) 4 Page - Analog Devices

 
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AD7674
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
PDBUF High @ 500 kSPS10
78
90
mW
PDBUF High @ 1 kSPS10
160
µW
PDBUF High @ 800 kSPS8
114
126
mW
POWER DISSIPATION9
PDBUF Low @ 800 kSPS8
126
138
mW
TEMPERATURE RANGE11
Specified Performance
TMIN to TMAX
–40
+85
°C
1 See
section.
Analog Inputs
2 LSB means Least Significant Bit. With the ±4.096 V input range, 1 LSB is 31.25 µV.
3 See
section. These parameters are centered on nominal values, which depend on the mode. In Warp mode, nominal zero error and
nominal gain error are centered around 0 LSB. In Normal and Impulse modes, nominal zero error is +375 LSB, and nominal gain error is +0.273% of FSR. These
specifications are the deviation from these nominal values. These specifications do not include the error contribution from the external reference but do include the
error contribution from the reference buffer, if used.
Definitions of Specifications
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.
Rev. 0 | Page 4 of 28


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