ADC3421 datasheet(4/80 Pages) TI2

4 / 80 page

ADC3421, ADC3422, ADC3423, ADC3424

SBAS673A – JULY 2014 – REVISED OCTOBER 2015

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Pin Functions

I/O

DESCRIPTION

NAME

NO.

6, 7, 10, 11, 14,

AVDD

15, 20, 23, 28, 29,

Analog 1.8-V power supply

32, 33, 36

CLKM

Negative differential clock input for the ADC

CLKP

Positive differential clock input for the ADC

DA0M

Negative serial LVDS output for wire-0 of channel A

DA0P

Positive serial LVDS output for wire-0 of channel A

DA1M

Negative serial LVDS output for wire-1 of channel A

DA1P

Positive serial LVDS output for wire-1 of channel A

DB0M

Negative serial LVDS output for wire-0 of channel B

DB0P

Positive serial LVDS output for wire-0 of channel B

DB1M

Negative serial LVDS output for wire-1 of channel B

DB1P

Positive serial LVDS output for wire-1 of channel B

DC0M

Negative serial LVDS output for wire-0 of channel C

DC0P

Positive serial LVDS output for wire-0 of channel C

DC1M

Negative serial LVDS output for wire-1 of channel C

DC1P

Positive serial LVDS output for wire-1 of channel C

DD0M

Negative serial LVDS output for wire-0 of channel D

DD0P

Positive serial LVDS output for wire-0 of channel D

DD1M

Negative serial LVDS output for wire-1 of channel D

DD1P

Positive serial LVDS output for wire-1 of channel D

DCLKM

Negative bit clock output

DCLKP

Positive bit clock output

DVDD

5, 38, 47, 52

Digital 1.8-V power supply

FCLKM

Negative frame clock output

FCLKP

Positive frame clock output

GND

PowerPAD™

Ground, 0 V

INAM

Negative differential analog input for channel A

INAP

Positive differential analog input for channel A

INBM

Negative differential analog input for channel B

INBP

Positive differential analog input for channel B

INCM

Negative differential analog input for channel C

INCP

Positive differential analog input for channel C

INDM

Negative differential analog input for channel D

INDP

Positive differential analog input for channel D

Power-down control. This pin can be configured via the SPI. This pin has an internal

PDN

150-k

Ω pulldown resistor.

RESET

Hardware reset; active high. This pin has an internal 150-k

Ω pulldown resistor.

SCLK

Serial interface clock input. This pin has an internal 150-k

Ω pulldown resistor.

SDATA

Serial interface data input. This pin has an internal 150-k

Ω pulldown resistor.

SDOUT

Serial interface data output

Serial interface enable; active low.

SEN

This pin has an internal 150-k

Ω pullup resistor to AVDD.

SYSREFM

Negative external SYSREF input

SYSREFP

Positive external SYSREF input

VCM

Common-mode voltage for analog inputs

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