Datasheet > LM4031AI

LM4031AI

更新时间： 2024-10-28 03:51:35

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
41页	1164K
描述
Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold

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LM4031AI 数据手册

June 2002

ADC12H030/ADC12H032/ADC12H034/ADC12H038,

ADC12030/ADC12032/ADC12034/ADC12038

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

Converters with MUX and Sample/Hold

General Description

Applications

n Medical instruments

n Process control systems

n Test equipment

The ADC12030, and ADC12H030 families are 12-bit plus

sign successive approximation A/D converters with serial I/O

and configurable input multiplexers. The ADC12032/

ADC12H032, ADC12034/ADC12H034 and ADC12038/

ADC12H038 have 2, 4 and 8 channel multiplexers, respec-

tively. The differential multiplexer outputs and A/D inputs are

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

pins. The ADC12030/ADC12H030 has a two channel multi-

plexer with the multiplexer outputs and A/D inputs internally

connected. The ADC12030 family is tested with a 5 MHz

clock, while the ADC12H030 family is tested with an 8 MHz

clock. On request, these A/Ds go through a self calibration

process that adjusts linearity, zero and full-scale errors to

less than 1 LSB each.

Features

n Serial I/O (MICROWIRE 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 4.096V reference

n 0V to 5V analog input range with single 5V power

supply

The analog inputs can be configured to operate in various

combinations

single-ended,

differential,

pseudo-differential modes. A fully differential unipolar analog

input range (0V to +5V) can be accommodated with a single

+5V supply. In the differential modes, valid outputs are ob-

tained even when the negative inputs are greater than the

positive because of the 12-bit plus sign output data format.

n No Missing Codes over temperature

Key Specifications

The serial I/O is configured to comply with the NSC MI-

CROWIRE. For voltage references see the LM4040 or

LM4041.

Resolution

12-bit plus sign

12-bit plus sign conversion time

– ADC12H30 family

– ADC12030 family

5.5 µs (max)

8.8 µs (max)

12-bit plus sign throughput time

– ADC12H30 family

– ADC12030 family

8.6 µs (max)

14 µs (max)

1 LSB (max)

5V 10%

Integral linearity error

single supply

Power consumption

33 mW (max)

100 µW (typ)

– Power down

DS011354

www.national.com

12 3 4 5 6 7...41

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与LM4031AI相关器件

型号	品牌	获取价格	描述	数据表
LM4040	ONSEMI	获取价格	Precision Micro-Power Shunt Voltage References
LM4040	DIODES	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
LM4040	MAXIM	获取价格	Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Volt
LM4040	ZETEX	获取价格	Precision micropower shunt voltage references
LM4040	NSC	获取价格	Precision Micropower Shunt Voltage Reference
LM4040	MICREL	获取价格	Precision Micropower Shunt Voltage Reference
LM4040	TI	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040	VISHAY	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040	MICROCHIP	获取价格	Ideal for space critical applications, the LM4040 and LM4041 precision voltage references
LM4040	STMICROELECTRONICS	获取价格	高精度微功耗分流器电压参考

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