Datasheet > ADC101S101EVAL

ADC101S101EVAL

更新时间： 2024-09-29 21:54:15

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美国国家半导体 - NSC		转换器
页数	文件大小	规格书
23页	912K
描述
1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23

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ADC101S101EVAL 数据手册

January 2005

ADC121S101/ADC101S101/ADC081S101

1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP

General Description

Features

n Variable power management

The ADC121S101, ADC101S101, and ADC081S101 are low

power, monolithic CMOS 12-, 10- and 8-bit analog-to-digital

converters that operate at 1 MSPS. Each device is based on

a successive approximation register architecture with inter-

nal track-and-hold. The serial interface is compatible with

n Packaged in 6-lead SOT-23 (ADC081S101 also

available in a 6-Lead LLP package)

n Power supply used as reference

n Single +2.7V to +5.25V supply operation

™

several standards, such as SPI , QSPI , MICROWIRE

and many common DSP serial interfaces.

™

n SPI /QSPI /MICROWIRE /DSP compatible

The ADC121S101/101S101/081S101 uses the supply volt-

age as a reference. This enables the devices to operate with

a full-scale input range of 0 to V_DD. The conversion rate is

determined from the serial clock (SCLK) speed. These con-

verters offer a shutdown mode, which can be used to trade

throughput for power consumption. The ADC121S101/

101S101/081S101 are operated with a single supply that

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

during continuous conversion, using a +3V or +5V supply, is

2 mW or 10 mW, respectively. The power down feature,

which is enabled by a chip select (CS) pin, reduces the

power consumption to under 5 µW using a +5V supply. All

three converters are available in a 6-lead SOT-23 package,

which provides an extremely small footprint for applications

where space is a critical consideration. The ADC081S101 is

also available in a 6-lead LLP package. These products are

designed for operation over the industrial temperature range

of −40˚C to +85˚C, with some parameters specified to

+125˚C for the ADC121S101.

Key Specifications

n Resolution with no Missing Codes

n Conversion Rate

12/10/8 bits

1 MSPS

+0.5, -0.3 LSB (typ)

0.4 LSB (typ)

n DNL (ADC121S101)

n INL (ADC121S101)

n Power Consumption

— 3V Supply

2 mW (typ)

10 mW (typ)

— 5V Supply

Applications

n Automotive Navigation

n FA/ATM Equipment

n Portable Systems

n Medical Instruments

n Mobile Communications

n Instrumentation and Control Systems

Connection Diagram

20110201

™

MICROWIRE is a trademark of National Semiconductor Corporation.

TRI-STATE^®is a trademark of National Semiconductor Corporation.

™

QSPI and SPI are trademarks of Motorola, Inc.

DS201102

www.national.com

12 3 4 5 6 7...23

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