AD7678ASTZ datasheet(5/29 Pages) AD

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AD7678

Rev. A | Page 4 of 28

Parameter

Conditions

Min

Typ

Max

Unit

DIGITAL INPUTS

Logic Levels

VIL

–0.3

+0.8

VIH

2.0

DVDD + 0.3

IIL

–1

μA

IIH

–1

μA

DIGITAL OUTPUTS

Data Format5

Pipeline Delay6

VOL

ISINK = 1.6 mA

0.4

VOH

ISOURCE = –500 μA

OVDD – 0.6

POWER SUPPLIES

Specified Performance

AVDD

4.75

5.25

DVDD

4.75

5.25

OVDD

2.7

DVDD + 0.37

Operating Current

100 kSPS Throughput

AVDD

PDBUF High

2.6

DVDD8

OVDD8

μA

PDBUF High @ 100 kSPS

PDBUF High @ 1 kSPS

180

μW

PDBUF Low @ 100 kSPS

TEMPERATURE RANGE9

Specified Performance

TMIN to TMAX

–40

+85

°C

1 See the Analog Inputs section.

2 LSB means Least Significant Bit. With the ±4.096 V input range, 1 LSB is 31.25 μV.

3 See the Definition 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 maximum should be the minimum of 5.25 V and DVDD + 0.3 V.

8 Tested in Parallel Reading mode.

9 Contact factory for extended temperature range.

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