THS12082

12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS

SLAS271B – MAY 2000 – REVISED DECEMBER 2002

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POST OFFICE BOX 655303

features

Signals or 1 Differential Signal

and

±5% Accuracy

applications

description

The THS12082 is a CMOS, low-power, 12-bit, 8 MSPS analog-to-digital converter (ADC). The speed,

resolution, bandwidth, and single-supply operation are suited for applications in radar, imaging, high-speed

acquisition, and communications. A multistage pipelined architecture with output error correction logic provides

for no missing codes over the full operating temperature range. Internal control registers allow for programming

the ADC into the desired mode. The THS12082 consists of two analog inputs, which are sampled

simultaneously. These inputs can be selected individually and configured to single-ended or differential inputs.

An integrated 16 word deep FIFO allows the storage of data in order to take the load off of the processor

connected to the ADC. Internal reference voltages for the ADC (1.5 V and 3.5 V) are provided.

An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the

application. Two different conversion modes can be selected. In the single conversion mode, a single and

simultaneous conversion can be initiated by using the single conversion start signal (CONVST). The conversion

clock in the single conversion mode is generated internally using a clock oscillator circuit. In the continuous

conversion mode, an external clock signal is applied to the CONV_CLK input of the THS12082. The internal

clock oscillator is switched off in the continuous conversion mode.

The THS12082C is characterized for operation from 0

°C to 70°C, and the THS12082I is characterized for

operation from –40

°C to 85°C.

Copyright

 2002, Texas Instruments Incorporated

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.

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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D0

D1

D2

D3

D4

D5

BGND

D6

D7

D8

D9

RA0/D10

RA1/D11

CONV_CLK (CONVST)

DATA_AV

OV_FL

RESET

AINP

AINM

REFIN

REFOUT

REFP

REFM

AGND

CS0

CS1

WR (R/W)

RD

DGND

DA PACKAGE

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