12-Bit Pipelined

ADC Core

Output

Buffers

Reference

A

Reference

B

Timing

Generation

2

12

12

DA0-DA11

CHANNEL A

12-Bit Pipelined

ADC Core

Output

Buffers

2

12

DB0-DB11

CHANNEL B

DRDY

CLK

Ref.Decoupling

Ref.Decoupling

3

3

12

ADC12DC080

www.ti.com

SNAS405B – SEPTEMBER 2007 – REVISED NOVEMBER 2008

ADC12DC080 Dual 12-Bit, 80 MSPS A/D Converter with CMOS Outputs

Check for Samples: ADC12DC080

1

FEATURES

DESCRIPTION

The ADC12DC080 is a high-performance CMOS

2

•

Internal Sample-and-Hold Circuit and Precision

analog-to-digital converter capable of converting two

Reference

analog input signals into 12-bit digital words at rates

•

Low Power Consumption

up to 80 Mega Sample Per Second (MSPS). These

•

Clock Duty Cycle Stabilizer

converters uses a differential, pipelined architecture

with digital error correction and an on-chip sample-

•

Single +3.0V Supply Operation

and-hold circuit to minimize power consumption and

•

Power-Down Mode

the

external

component

count,

while

providing

•

Offset Binary or 2's Complement Output Data

excellent dynamic performance. A unique sample-

Format

and-hold stage yields a full-power bandwidth of 1

GHz. The ADC12DC080 may be operated from a

•

60-Pin WQFN Package, (9x9x0.8mm, 0.5mm

single +3.0V power supply. A power-down feature

Pin-Pitch)

reduces the power consumption to very low levels

while still allowing fast wake-up time to full operation.

APPLICATIONS

The differential inputs provide a 2V full scale

differential input swing. A stable 1.2V internal voltage

•

High IF Sampling Receivers

reference is provided, or the ADC12DC080 can be

•

Wireless Base Station Receivers

operated with an external 1.2V reference. Output

•

Test and Measurement Equipment

data format (offset binary versus 2's complement)

•

Communications Instrumentation

and duty cycle stabilizer are pin-selectable. The duty

cycle stabilizer maintains performance over a wide

•

Portable Instrumentation

range of clock duty cycles.

KEY SPECIFICATIONS

The ADC12DC080 is available in a 60-lead WQFN

package and operates over the industrial temperature

•

Resolution 12 Bits

range of

−40°C to +85°C.

•

Conversion Rate 80 MSPS

•

•

•

Full Power Bandwidth 1 GHz (typ)

•

Power Consumption 600 mW (typ)

Block Diagram

1

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.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.