AD7674_15 datasheet(4/28 Pages) AD

Teilenummer	AD7674

Bauteilbeschribung	18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC

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Hersteller	AD [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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