ADC32RF83 datasheet(4/138 Pages) TI

4 / 138 page

ADC32RF80, ADC32RF83

SBAS774A – MAY 2016 – REVISED DECEMBER 2016

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Product Folder Links: ADC32RF80 ADC32RF83

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Pin Functions (continued)

NAME

NO.

I/O

DESCRIPTION

CLOCK, SYNC

CLKINM

Differential clock input for the analog-to-digital converter (ADC).

This pin has an internal differential 100-Ω termination.

CLKINP

SYSREFM

External sync input. This pin has an internal, differential 100-Ω termination and

requires external biasing.

SYSREFP

GPIO1

I/O

GPIO control pin; configured through the SPI. This pin can be configured to be

either a fast overrange output for channel A and B, a fast detect alarm signal from

the peak power detect, or a numerically-controlled oscillator (NCO) control.

GPIO 4 (pin 63) can also be configured as a single-ended SYNCB input.

GPIO2

GPIO3

GPIO4

CONTROL, SERIAL

RESET

Hardware reset; active high. This pin has an internal 20-kΩ pulldown resistor.

SCLK

Serial interface clock input. This pin has an internal 20-kΩ pulldown resistor.

SDIN

I/O

Serial interface data input. This pin has an internal 20-kΩ pulldown resistor. SDIN

can be data input in 4-wire mode, data input and output in 3 wire-mode.

SEN

Serial interface enable. This pin has an internal 20-kΩ pullup resistor to DVDD.

SDOUT

Serial interface data output in 4-wire mode

PDN

Power down; active high. This pin can be configured through an SPI register setting

and can be configured to a fast overrange output channel B through the SPI.

This pin has an internal 20-kΩ pulldown resistor.

DATA INTERFACE

DA0M

JESD204B serial data output for channel A

DA0P

DA1M

DA1P

DA2M

DA2P

DA3M

DA3P

DB0M

JESD204B serial data output for channel B

DB0P

DB1M

DB1P

DB2M

DB2P

DB3M

DB3P

SYNCBM

Synchronization input for the JESD204B port. This pin has an LVDS or 1.8-V logic

input, an optional on-chip 100-Ω termination, and is selectable through the SPI.

This pin requires external biasing.

SYNCBP

POWER SUPPLY

AVDD19

10, 16, 24, 31, 39, 45

Analog 1.9-V power supply

AVDD

9, 12, 15, 17, 25, 30,

38, 40, 43, 44, 46

Analog 1.15-V power supply

DVDD

4, 8, 47, 51, 57, 64, 70

Digital 1.15 V-power supply, including the JESD204B transmitter

GND

3, 18, 23, 26, 29, 32,

37, 49, 52, 60, 67

Ground; shorted to thermal pad inside device

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