THS1031

2.7 V – 5.5 V, 10-BIT, 30 MSPS

CMOS ANALOG-TO-DIGITAL CONVERTER

SLAS242A – NOVEMBER 1999 – REVISED JANUARY 2000

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POST OFFICE BOX 655303

Analog-to-Digital Converter:

– Single-Ended

– Single-Ended With Analog Clamp

– Single-Ended With Programmable Digital

Clamp

– Differential

(PGA)

description

The THS1031 is a CMOS, low power, 10-bit, 30 MSPS analog-to-digital converter (ADC) that can operate with

a supply range from 2.7 V to 3.3 V. The THS1031 has been designed to give circuit developers more flexibility.

The analog input to the THS1031 can be either single-ended or differential. This device has a built-in clamp

amplifier whose clamp input level can be selected from an external dc source or from an internal high-precision

10-bit digital clamp level programmable via an internal CLAMP register. A 3-bit PGA is included to maintain SNR

for small signal. The THS1031 provides a wide selection of voltage reference to match the user’s design

requirements. For more design flexibility, the internal reference can be bypassed to use an external reference

to suit the dc accuracy and temperature drift requirements of the application. The out-of-range output is used

to monitor any out-of-range condition in THS1031’s input range. The format of digital output can be coded in

either straight binary or 2s complement.

The speed, resolution, and single-supply operation of the THS1031 are suited for applications in set-top-box

(STB), video, multimedia, imaging, high-speed acquisition, and communications. The built-in clamp function

allows dc restoration of video signal and is suitable for video application. The speed and resolution ideally suit

charge-couple device (CCD) input systems such as color scanners, digital copiers, digital cameras, and

camcorders. A wide input voltage range between REFBS and REFTS allows the THS1031 to be applied in both

imaging and communications systems

The THS1031I is characterized for operation from – 40

°C to 85°C.

AVAILABLE OPTIONS

TA

PACKAGED DEVICES

TA

28-TSSOP (PW)

28-SOIC (DW)

0

°C to 70°C

THS1031CPW

THS1031CDW

–40

°C to 85°C

THS1031IPW

THS1031IDW

Copyright

© 2000, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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AGND

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

I/O8

I/O9

OVR

DGND

AIN

REFBS

REFBF

MODE

REFTF

REFTS

CLAMPIN

CLAMP

REFSENSE

WR

OE

CLK

28-PIN TSSOP/SOIC PACKAGE

(TOP VIEW)

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.