AD6676EBZ datasheet(11/90 Pages) AD

11 / 90 page

Data Sheet

AD6676

Rev. D | Page 11 of 90

Pin No.

Mnemonic

Description

CMOS Input/Outputs

J8, H8, J7, H7

AGC1, AGC2, AGC3, AGC4

AGC Bidirectional Inputs/Outputs. By default, AGC2 and AGC1 are inputs,

whereas AGC4 and AGC3 are outputs. If the AGC2 and AGC1 pins are unused,

connect them to VSSD via a 100 kΩ resistor.

CSB

Serial Port Enable Input. Active low.

SDIO

Serial Port Input/Output.

SDO

Serial Port Output.

SCLK

Serial Clock Input.

RESETB

Active Low Reset Input. This pin places digital logic and SPI registers into a

known default state. Leave this pin open if unused because it has an internal

pull-up resistor.

Power Supplies

VDDIO

Digital Supply Input for CMOS Input/Outputs (1.8 V to 2.5 V).

J1, J2

VDDHSI

Digital 1.1 V Supply Input for the High Speed Serial Interface.

H3 to H5, J3 to J5

VDDD

Digital 1.1 V Supply Input.

F4, F5, G2 to G5, H2

VSSD

Digital Supply Return.

VDDQ

Analog 1.1 V Supply Input for the CLK Synthesizer Charge Pump and Dividers.

C2, D1, D2

VDDC

Analog 1.1 V Supply Input for the CLK Synthesizer VCO.

D4, D5

VDDL

Analog 1.1 V Supply Input for the ADC.

A2, A4, B2, B3, B5, C3, C4,

C6, D3, D7

VDD1

Analog 1.1 V Supply Input for the ADC.

A5, B6, B7, E7, E8

VDD2

Analog 2.5 V Supply Input.

A3, A8, B4, C5, C7, D6,

D8, E1 to E6, F1 to F3,

VSSA

Analog Supply Return.

Negative Voltage Regulator

VDD2NV

Analog 2.5 V Supply Input.

VSS2OUT

Internal −2.0 V Supply Output. Connect this pin to VSS2IN.

VSS2IN

Analog −2.0 V Supply Input. Connect this pin to VSS2OUT.

AD6676EBZ 数据表(PDF) 11 Page - Analog Devices

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