XRD87L75 데이터 시트보기 (PDF) - Exar Corporation

부품명

상세내역

일치하는 목록

XRD87L75

Low-Voltage CMOS 8-Bit High-Speed Analog-to-Digital Converter

Exar Corporation 

FEATURES

· 8-Bit Resolution

· Up to 10MHz Sampling Rate

· Internal S/H Function

· Single Supply: 3.3V

· VIN DC Range: 0V to VDD

· VREF DC Range: 1V to VDD

· Low Power: 25mW typ. (excluding reference)

· Latch-Up Free

XRD87L75

Low-Voltage CMOS 8-Bit High-Speed

Analog-to-Digital Converter

· ESD Protection: 2000V Minimum

· Small 20-Pin SOIC/SSOP Packages

April 2==2 1

APPLICATIONS

· Digital Color Copiers

· Cellular Telephones

· CCD-Based Systems

· Hardware Scanners

· Video Capture Boards

GENERAL DESCRIPTION

The XRD87L75 is an 8-bit Analog-to-Digital Converter in

a small 20-pin SOIC/SSOP package. Designed using

an advanced 3.3V CMOS process, this part offers

excellent performance, low power consumption and

latch-up free operation.

This device uses a two-step flash architecture to

maintain low power consumption at high conversion

rates. The input circuitry of the XRD87L75 includes an

on-chip S/H function and allows the user to digitize

analog input signals between AGND and AVDD. Careful

design and chip layout have achieved a low analog input

capacitance. This reduces “kickback” and eases the

requirements of the buffer/amplifier used to drive the

XRD87L75.

SIMPLIFIED BLOCK AND TIMING DIAGRAM

The designer can choose the internally generated

reference voltages by connecting VRB to VRBS and VRT to

VRTS , or provide external reference voltages to the VRB

and VRT pins. The internal reference generates 0.4V at

VRB and 1.72V at VRT. Providing external reference

voltages allows easy interface to any input signal range

between GND and VDD. This also allows the system to

adjust these voltages to cancel zero scale and full

scale errors, or to change the input range as needed.

The device operates from a single +3.3V supply. Power

consumption is 25mW at FS = 6MHz.

Specified for operation over the commercial / industrial

(-40 to +85°C) temperature range, the XRD87L75 is

available in Surface Mount (SOIC), Shrink Small Out-

line (SSOP) and Plastic Dual-In-line (PDIP) Packages.

Rev. 1.00

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017

Share Link: