1

2

3

4

5

6

7

8

CS

SCLK

DOUT

DIN

IN1

GND

ADC102S021

IN2

ADC102S021

www.ti.com

SNAS281G – FEBRUARY 2005 – REVISED MARCH 2013

ADC102S021 2 Channel, 50 ksps to 200 ksps, 10-Bit A/D Converter

Check for Samples: ADC102S021

1

FEATURES

DESCRIPTION

The

ADC102S021

is

a

low-power,

two-channel

2

•

Specified Over a Range of Sample Rates.

CMOS 10-bit analog-to-digital converter with a high-

•

Two Input Channels

speed

serial

interface.

Unlike

the

conventional

•

Variable Power Management

practice of specifying performance at a single sample

rate only, the ADC102S021 is fully specified over a

•

Single Power Supply with 2.7V - 5.25V Range

sample rate range of 50 ksps to 200 ksps. The

converter is based on a successive-approximation

APPLICATIONS

register architecture with an internal track-and-hold

•

Portable Systems

circuit. It can be configured to accept one or two input

signals at inputs IN1 and IN2.

•

Remote Data Acquisition

•

Instrumentation and Control Systems

The output serial data is straight binary, and is

compatible with several standards, such as SPI™,

QSPI™, MICROWIRE, and many common DSP

KEY SPECIFICATIONS

serial interfaces.

•

DNL: ± 0.13 LSB (typ)

The ADC102S021 operates with a single supply that

•

INL: ± 0.13 LSB (typ)

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

•

SNR: 61.8 dB (typ)

consumption using a +3V or +5V supply is 1.94 mW

•

Power Consumption

and 6.9 mW, respectively. The power-down feature

reduces the power consumption to just 0.12 µW using

–

3V Supply: 1.94mW (typ)

a +3V supply, or 0.47 µW using a +5V supply.

–

5V Supply: 6.9 mW (typ)

The ADC102S021 is packaged in an 8-lead VSSOP

package. Operation is specified over the industrial

temperature range of

−40°C to +85°C.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Specified for Sample Rates of:

Resolution

50 to 200 ksps

200 to 500 ksps

500 ksps to 1Msps

12-bit

ADC122S021

ADC122S051

ADC122S101

10-bit

ADC102S021

ADC102S051

ADC102S101

8-bit

ADC082S021

ADC082S051

ADC082S101

(1)

All devices are fully pin and function compatible.

Connection Diagram

Figure 1. VSSOP Package

See Package Number DGK0008A

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 © 2005–2013, 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.