ADC3544 datasheet(4/86 Pages) TI

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Table 5-1. Pin Descriptions (continued)

I/O

DESCRIPTION

NAME

NO.

DIGITAL INTERFACE

DCLK

CMOS output for data bit clock.

SDR CMOS output used with 18 bit output (configured via output bit formatter). This

becomes the LSB. When not used it can be left unconnected.

See Section 8.3.5.4 and Section 8.3.5.5 on how to change the output resolution and output

bit mapping.

SDR CMOS output used with 16 bit output (configured via output bit formatter). This

becomes the LSB. When not used it can be left unconnected.

SDR CMOS output for data bit D0 (14 bit LSB).

D3/

DCLKIN

I/O

SDR CMOS output for data bit D1. Used as DCLKIN for serial CMOS output modes.

SDR CMOS output for data bit D2.

SDR CMOS output for data bit D3.

SDR CMOS output for data bit D4.

SDR CMOS output for data bit D5.

SDR CMOS output for data bit D6.

SDR CMOS output for data bit D7.

D10

SDR CMOS output for data bit D8.

D11/ Serial

Lane 0

SDR CMOS output for data bit D9. DDR CMOS output for data bits D6/D13 (MSB). Lane 0

in serial CMOS output mode.

D12/

Serial Lane 1

SDR CMOS output for data bit D10. DDR CMOS output for data bits D5/D12. Lane 1 in

serial CMOS output mode.

D13

SDR CMOS output for data bit D11.

DDR CMOS output for data bits D4/D11.

D14

SDR CMOS output for data bit D12.

DDR CMOS output for data bits D3/D10.

D15

CMOS output for data bit D13 (MSB).

DDR CMOS output for data bits D2/D9.

D16/ FCLK

SDR CMOS output used with 16 bit output (configured via output bit formatter). This

becomes the MSB. When not used it can be left unconnected.

DDR CMOS output for data bits D1/D8. Frame clock output in serial CMOS output mode.

D17

SDR CMOS output used with 18 bit output (configured via output bit formatter). This

becomes the MSB. When not used it can be left unconnected.

DDR CMOS output for data bits D0/D7 (LSB).

POWER SUPPLY

AVDD

5,8,11,16

Analog 1.8-V power supply

GND

12,15

Ground, 0 V

IOGND

Ground, 0 V for digital interface

IOVDD

1.8-V power supply for digital interface

PowerPAD™

Connect to ground.

ADC3541, ADC3542

SBAS840B – JULY 2020 – REVISED APRIL 2022

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