ADC3663 datasheet(28/92 Pages) TI2

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8 Detailed Description

8.1 Overview

The ADC366x is a low noise, ultra-low power 16-bit high-speed dual channel ADC supporting sampling rates

up to 65 Msps. It offers very good DC precision together with IF sampling support which makes it ideally suited

for a wide range of applications. The ADC366x is equipped with an on-chip internal reference option but it also

supports the use of an external, high precision 1.6 V voltage reference or an external 1.2 V reference which is

buffered and gained up internally. Because of the inherent low latency architecture, the digital output result is

available after only one to two clock cycles. Single ended as well as differential input signaling is supported.

An optional programmable digital down converter enables external anti-alias filter relaxation as well as output

data rate reduction. The digital filter provides a 32-bit programmable NCO and supports both real or complex

decimation.

The ADC366x uses a serial LVDS (SLVDS) interface to output the data which minimizes the number of digital

interconnects. The device supports a two-lane (2-wire), a one-lane (1-wire) and a half-lane (1/2-wire) option. The

ADC366x includes a digital output formatter which supports output resolutions from 14 to 20-bit.

The device features and control options can be set up either through pin configurations or via SPI register writes.

8.2 Functional Block Diagram

Control

AIN

CLK

VREF

ADC

16bit

1.2V REF

REFBUF

Digital Downconverter

NCO

BIN

ADC

16bit

NCO

0.95V

VCM

DB0/1

DCLKIN

DCLK

FCLK

DA0/1

Dig I/F

SLVDS

Crosspoint

Switch

ADC3661, ADC3662, ADC3663

SBAS991B – FEBRUARY 2021 – REVISED SEPTEMBER 2022

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Product Folder Links: ADC3661 ADC3662 ADC3663

ADC3663 Datasheet(PDF) 28 Page - Texas Instruments

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