AD7761BSTZ datasheet(8/76 Pages) AD

8 / 76 page

Data Sheet

AD7761

Rev. A | Page 7 of 75

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

LVDS Clock2

RL = 100 Ω

Differential Input Voltage

100

650

Common-Mode Input Voltage

800

1575

Absolute Input Voltage

1.88

ADC RESET2

ADC Start-Up Time After Reset6

Time to first DRDY, fast mode,

decimation by 32

1.58

1.66

Minimum RESET Low Pulse Width

tMCLK = 1/MCLK

2 × tMCLK

LOGIC INPUTS

Input Voltage2

High, VINH

0.65 ×

IOVDD

Low, VINL

2.25 V < IOVDD < 3.6 V

0.7

1.72 V < IOVDD < 1.88 V

0.4

Hysteresis2

2.25 V < IOVDD < 3.6 V

0.04

0.09

1.72 V < IOVDD < 1.88 V

0.04

0.2

Leakage Current

−10

+0.03

+10

µA

RESET pin7

−10

+10

µA

LOGIC OUTPUTS

Output Voltage2

High, VOH

ISOURCE = 200 μA

0.8 ×

IOVDD

Low, VOL

ISINK = 400 µA

0.4

Leakage Current

Floating state

−10

+10

µA

Output Capacitance

Floating state

SYSTEM CALIBRATION2

Full-Scale Calibration Limit

1.05 × VREF

Zero-Scale Calibration Limit

−1.05 ×

VREF

Input Span

0.4 × VREF

2.1 × VREF

POWER REQUIREMENTS

Power Supply Voltage

AVDD1 − AVSS

4.5

5.0

5.5

AVDD2 − AVSS

2.0

2.25 to 5.0

5.5

AVSS − DGND

−2.75

IOVDD − DGND

1.72

2.5 to 3.3

or 1.8

3.6

POWER SUPPLY CURRENTS

Maximum output data rate, CMOS

MCLK, eight DOUTx signals, all

supplies at maximum voltages, all

channels in Channel Mode A

Eight Channels Active

Fast Mode

AVDD1 Current

Precharge reference buffers off

Precharge reference buffers on

57.5

AVDD2 Current

37.5

IOVDD Current

Wideband filter

Sinc5 filter2

Median Mode

AVDD1 Current

Precharge reference buffers off

18.5

Precharge reference buffers on

AVDD2 Current

21.3

IOVDD Current

Wideband filter

Sinc5 filter

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