Datasheet > ADCS7476_07

ADCS7476_07

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器
页数	文件大小	规格书
24页	498K
描述
1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP

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ADCS7476_07 数据手册

September 2007

ADCS7476/ADCS7477/ADCS7478

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

General Description

Features

The ADCS7476, ADCS7477, and ADCS7478 are low power,

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

ers that operate at 1 MSPS. The ADCS7476/77/78 are drop-

in replacements for Analog Devices' AD7476/77/78. Each

device is based on a successive approximation register ar-

chitecture with internal track-and-hold. The serial interface is

compatible with several standards, such as SPI™, QSPI™,

MICROWIRE™, and many common DSP serial interfaces.

Variable power management

■

Packaged in 6-lead, SOT-23 and LLP

Power supply used as reference

Single +2.7V to +5.25V supply operation

SPI™/QSPI™/MICROWIRE™/DSP compatible

■

Key Specifications

The ADCS7476/77/78 uses the supply voltage as a refer-

ence, enabling 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 converters offer a shut-

down mode, which can be used to trade throughput for power

consumption. The ADCS7476/77/78 is 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

and in a 6-lead LLP, both of which provide an extremely small

footprint for applications where space is a critical considera-

tion. These products are designed for operation over the

automotive/extended industrial temperature range of −40°C

to +125°C.

Resolution with no Missing Codes

Conversion Rate

DNL

INL

12/10/8 bits

■

1 MSPS

+0.5, -0.3 LSB (typ)

± 0.4 LSB (typ)

Power Consumption

3V Supply

5V Supply

2 mW (typ)

10 mW (typ)

—

Applications

Automotive Navigation

■

FA/ATM Equipment

Portable Systems

Medical Instruments

Mobile Communications

Instrumentation and Control Systems

Connection Diagram

20057701

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

200577

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