AD7679AST datasheet(4/28 Pages) AD

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AD7679

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

500 kSPS Throughput

AVDD

PDBUF High

10.8

DVDD8

4.5

OVDD8

µA

PDBUF High @ 500 kSPS

PDBUF High @ 1 kSPS

150

µW

POWER DISSIPATION8

PDBUF Low @ 500 kSPS

103

TEMPERATURE RANGE9

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. The nominal gain error is not centered at zero and is +0.273% 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.

Definition 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 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 Tested in Parallel Reading mode.

9 Contact factory for extended temperature range.

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