1

2

3

4

5

6

7

8

9

10

CS

SCLK

DOUT

DIN

IN1

GND

IN4

IN3

IN2

ADC124S051

ADC124S051

www.ti.com

SNAS260E – NOVEMBER 2004 – REVISED NOVEMBER 2004

ADC124S051 4 Channel, 200 ksps to 500 ksps, 12-Bit A/D Converter

Check for Samples: ADC124S051

1

FEATURES

DESCRIPTION

The ADC124S051 is a low-power, four-channel

2

•

Specified Over a Range of Sample Rates

CMOS 12-bit analog-to-digital converter with a high-

•

Four Input Channels

speed

serial

interface.

Unlike

the

conventional

•

Variable Power Management

practice of specifying performance at a single sample

rate only, the ADC124S051 is fully specified over a

•

Single Power Supply with 2.7V - 5.25V Range

sample rate range of 200 ksps to 500 ksps. The

converter is based on a successive-approximation

KEY SPECIFICATIONS

register architecture with an internal track-and-hold

•

DNL: +0.7 /

−0.4 LSB (typ)

circuit. It can be configured to accept up to four input

signals at inputs IN1 through IN4.

•

INL: ± 0.5 LSB (typ)

•

SNR: 72.5 dB (typ)

The output serial data is straight binary, and is

compatible with several standards, such as SPI™,

•

Power Consumption:

QSPI™, MICROWIRE and many common DSP serial

–

3V Supply: 3.0 mW (typ)

interfaces.

–

5V Supply: 10.0 mW (typ)

The ADC124S051 operates with a single supply that

can range from +2.7V to +5.25V. Normal power

APPLICATIONS

consumption using a +3V or +5V supply is 3.0 mW

•

Portable Systems

and 10.0 mW, respectively. The power-down feature

reduces the power consumption to just 0.14 µW using

•

Remote Data Acquisition

a +3V supply, or 0.32 µW using a +5V supply.

•

Instrumentation and Control Systems

The ADC124S051 is packaged in a 10-lead VSSOP

package. Operation over the industrial temperature

range of

−40°C to +85°C is ensured.

Resolution

Specified for a Sample Rate Range of:

50 to 200 ksps

200 to 500 ksps

500 ksps to 1 Msps

12-bit

ADC124S021

ADC124S051

ADC122S101

10-bit

ADC104S021

ADC104S051

ADC102S101

8-bit

ADC084S021

ADC084S051

ADC082S101

(1)

All devices are fully pin and function compatible.

Connection Diagram

10 Pin VSSOP Package

See Package Number DGS

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 © 2004, 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.