ADC121S101CIMF+ National Semiconductor, ADC121S101CIMF+ Datasheet

ADC121S101CIMF+

Manufacturer Part Number

ADC121S101CIMF+

Description

Manufacturer

National Semiconductor

Datasheet

1.ADC121S101CIMF.pdf (17 pages)

Specifications of ADC121S101CIMF+

Notes

NEW

Date_code

10+

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ADC121S101

Single Channel, 0.5 to 1 Msps, 12-Bit A/D Converter

General Description

The ADC121S101 is a low-power, single channel CMOS

12-bit analog-to-digital converter with a high-speed serial

interface. Unlike the conventional practice of specifying per-

formance at a single sample rate only, the ADC121S101 is

fully specified over a sample rate range of 500 ksps to

1 Msps. The converter is based upon a successive-

approximation register architecture with an internal track-

and-hold circuit.

The output serial data is straight binary, and is compatible

with

MICROWIRE, and many common DSP serial interfaces.

The ADC121S101 operates with a single supply that can

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

using a +3V or +5V supply is 2.0 mW and 10 mW, respec-

tively. The power-down feature reduces the power consump-

tion to as low as 2.6 µW using a +5V supply.

The ADC121S101 is packaged in 6-lead LLP and SOT-23

packages. Operation over the industrial temperature range

of −40˚C to +125 ˚C is guaranteed.

Pin-Compatible Alternatives by Resolution and Speed

Connection Diagram

Ordering Information

TRI-STATE

QSPI

ADC121S101CISD

ADC121S101CISDX

ADC121S101CIMF

ADC121S101EVAL

™

All devices are fully pin and function compatible.

and SPI

several

Order Code

is a trademark of National Semiconductor Corporation

Resolution

™

12-bit

10-bit

are trademarks of Motorola, Inc.

8-bit

standards,

Temperature Range

such

−40˚C to +125 ˚C

50 to 200 ksps

ADC121S021

ADC101S021

ADC081S021

DS201450

SPI

™

QSPI

Specified for Sample Rate Range of:

™

6-Lead SOT-23 Package, Tape & Reel

6-Lead LLP Package, Tape & Reel

200 to 500 ksps

Features

n Specified over a range of sample rates.

n 6-lead LLP and SOT-23 packages

n Variable power management

n Single power supply with 2.7V - 5.25V range

n SPI

Key Specifications

n DNL

n INL

n SNR

n Power Consumption

Applications

n Portable Systems

n Remote Data Acquisition

n Instrumentation and Control Systems

ADC121S051

ADC101S051

ADC081S051

— 3V Supply

— 5V Supply

6-Lead SOT-23 Package

6-Lead LLP Package

™

Evaluation Board

/QSPI

Description

20145005

™

/MICROWIRE/DSP compatible

500 ksps to 1 Msps

ADC121S101

ADC101S101

ADC081S101

+0.5 / −0.3 LSB (typ)

0.40 LSB (typ)

Top Mark

www.national.com

72.5 dB (typ)

2.0 mW (typ)

10 mW (typ)

X01C

X1C

April 2006

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