AD7622BSTZ datasheet(5/29 Pages) AD

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AD7622

Rev. 0 | Page 4 of 28

Parameter

Conditions

Min

Typ

Max

Unit

REFBUFIN Output Voltage

REFBUFIN @ 25°C

1.19

REFBUFIN Output Resistance

6.33

kΩ

EXTERNAL REFERENCE

PDREF = PDBUF = high

Voltage Range

REF

1.8

2.5

AVDD + 0.1

Current Drain

2 MSPS throughput

150

μA

REFERENCE BUFFER

PDREF = high, PDBUF = low

REFBUFIN Input Voltage Range

REF = 2.048 V typ

1.05

1.2

1.30

REFBUFIN Input Current

REFBUFIN = 1.2 V

TEMPERATURE PIN

Voltage Output

@ 25°C

278

Temperature Sensitivity

mV/°C

Output Resistance

4.7

kΩ

DIGITAL INPUTS

Logic Levels

VIL

−0.3

+0.6

VIH

1.7

5.25

IIL

−1

μA

IIH

−1

μA

DIGITAL OUTPUTS

Data Format7

Pipeline Delay8

VOL

ISINK = 500 μA

0.4

VOH

ISOURCE = −500 μA

OVDD − 0.3

POWER SUPPLIES

Specified Performance

AVDD

2.37

2.5

2.63

DVDD

2.37

2.5

2.63

OVDD

2.309

3.6

Operating Current10

2 MSPS throughput

AVDD11

With internal reference

AVDD

Without internal reference

DVDD

2.5

OVDD12

Power Dissipation11

With Internal Reference10

2 MSPS throughput

Without Internal Reference10

2 MSPS throughput

In Power-Down Mode12

PD = high

μW

TEMPERATURE RANGE13

Specified Performance

TMIN to TMAX

−40

+85

°C

1 When using an external reference. With the internal reference, the input range is −0.1 V to VREF.

2 See Analog Inputs section.

3 Linearity is tested using endpoints, not best fit.

4 LSB means least significant bit. With the ±2.048 V input range, 1 LSB is 62.5 μV.

5 See Voltage Reference Input section. These specifications do not include the error contribution from the external reference.

6 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.

7 Parallel or serial 16-bit.

8 Conversion results are available immediately after completed conversion.

9 See the Absolute Maximum Ratings section.

10 In wideband and warp modes. Tested in parallel reading mode.

11 With internal reference, PDREF and PDBUF are low; without internal reference, PDREF and PDBUF are high.

12 With all digital inputs forced to OVDD.

13 Consult sales for extended temperature range.

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