ADC12L032CIWM

更新时间： 2024-11-25 22:39:51

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器光电二极管
页数	文件大小	规格书
36页	830K
描述
3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold

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ADC12L032CIWM 数据手册

June 1999

ADC12L030/ADC12L032/ADC12L034/ADC12L038

3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D

Converters with MUX and Sample/Hold

General Description

Features

n 0V to 3.3V analog input range with single 3.3V power

supply

The ADC12L030 family is 12-bit plus sign successive ap-

proximation A/D converters with serial I/O and configurable

input multiplexers. These devices are fully tested with a

single 3.3V power supply. The ADC12L032, ADC12L034 and

ADC12L038 have 2, 4 and 8 channel multiplexers, respec-

tively. Differential multiplexer outputs and A/D inputs are

available on the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2

pins. The ADC12L030 has a two channel multiplexer with the

multiplexer outputs and A/D inputs internally connected. On

request, these A/Ds go through a self calibration process

n Serial I/O ( MICROWIRE and SPI Compatible)

n 2, 4, or 8 channel differential or single-ended multiplexer

n Analog input sample/hold function

n Power down mode

n Variable resolution and conversion rate

n Programmable acquisition time

n Variable digital output word length and format

n No zero or full scale adjustment required

n Fully tested and guaranteed with a 2.5V reference

n No Missing Codes over temperature

that adjusts linearity, zero and full-scale errors to less than

⁄2 LSB each.

The analog inputs can be configured to operate in various

combinations of single-ended, differential, or

pseudo-differential modes. A fully differential unipolar analog

input range (0V to +3.3V) can be accommodated with a

single +3.3V supply. In the differential modes, valid outputs

are obtained even when the negative inputs are greater than

the positive because of the 12-bit plus sign two’s compliment

output data format.

Key Specifications

n Resolution

12-bit plus sign

8.8 µs (min)

73 kHz (max)

n 12-bit plus sign conversion time

n 12-bit plus sign sampling rate

n Integral linearity error

n Single supply

n Power dissipation

n Power down

1 LSB (max)

3.3V 10%

The serial I/O is configured to comply with NSC’s

15 mW (max)

40 µW (typ)

™

MICROWIRE and Motorola’s SPI standards. For voltage

references, see the LM4040 or LM4041 data sheets.

Applications

n Portable Medical instruments

n Portable computing

n Portable Test equipment

ADC12L038 Simplified Block Diagram

DS011830-1

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

™

COPS microcontrollers, HPC and MICROWIRE are trademarks of National Semiconductor Corporation.

™

Microsoft is a trademark of Microsoft Corporation.

DS011830

www.national.com

12 3 4 5 6 7...36

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与ADC12L032CIWM相关器件

型号	品牌	获取价格	描述	数据表
ADC12L032CIWM/NOPB	TI	获取价格	2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
ADC12L032CIWMX	ETC	获取价格	Single-Ended Data Acquisition System
ADC12L034	NSC	获取价格	3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12L034CIN	TI	获取价格	4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP24, 0.300 INCH, PLASTIC, DIP-
ADC12L034CIWM	NSC	获取价格	3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12L034CIWM/NOPB	TI	获取价格	4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24, SOP-24
ADC12L034CIWMX	ETC	获取价格	Single-Ended Data Acquisition System
ADC12L038	NSC	获取价格	3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12L038CIN	ETC	获取价格	Single-Ended Data Acquisition System
ADC12L038CIWM	NSC	获取价格	3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold

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