LTC6952 datasheet(14/80 Pages) AD

14 / 80 page

LTC6952

6952f

For more information www.analog.com

Preliminary Technical Data

Advance Product Information Subject to Change

Rev PrA

EZS_SRQ+, EZS_SRQ– (Pins 47, 48): Synchronization

or SYSREF Request Input. Bit SRQMD defines this dif-

ferential or single-ended input as an EZSync request or

SYSREF request. It can operate as a differential input,

or EZS_SRQ– can be tied to GND and EZS_SRQ+ driven

with a single-ended CMOS signal. See the Operation and

Applications Information section for more details.

STAT (Pin 49): Status Output. This signal is a configurable

logical OR combination of the UNLOCK, VCOOK, VCOOK,

LOCK, LOCK, REFOK, and REFOK status bits, program-

mable via the STATUS register. It can also be configured

to present a diode voltage for temperature measurement.

See the Operation section for more details.

SCLK (Pin 50): Serial Port Clock. This CMOS input clocks

serial port input data on its rising edge. See the Operation

section for more details.

PIN FUNCTIONS

SDO (Pin 51): Serial Port Data Output. This CMOS three-

state output presents data from the serial port during a

read communication burst. Optionally attach a resistor

of > 200kΩ to GND to prevent a floating output. See the

Operation section for more details.

SDI (Pin 52): Serial Port Data Input. The serial port uses

this CMOS input for data. See the Operation section for

more details.

GND (Exposed Pad Pin 53): Negative Power Supply

(Ground). The package exposed pad must be soldered

directly to the PCB land. The PCB land pattern should

have multiple thermal vias to the ground plane for both

low ground inductance and also low thermal resistance.

LTC6952 Datasheet(PDF) 14 Page - Analog Devices