ADS1244IDGST集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS1244IDGST属于集成电路（IC）的模数转换器（ADC）。由美国德州仪器公司制造生产的ADS1244IDGST模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。

FEATURES

20-BIT EFFECTIVE RESOLUTION

CURRENT CONSUMPTION: 90μA

ANALOG SUPPLY: 2.5V to 5.25V

DIGITAL SUPPLY: 1.8V to 3.6V

±5V DIFFERENTIAL INPUT RANGE

0.0002% INL (TYP), 0.0008% INL (MAX)

SIMPLE 2-WIRE SERIAL INTERFACE

SIMULTANEOUS 50Hz AND 60Hz REJECTION

SINGLE CONVERSIONS WITH SLEEP MODE

SINGLE-CYCLE SETTLING

SELF-CALIBRATION

WELL-SUITED FOR MULTICHANNEL SYSTEMS

EASILY CONNECTS TO THE MSP430

APPLICATIONS

HAND-HELD INSTRUMENTATION

PORTABLE MEDICAL EQUIPMENT

INDUSTRIAL PROCESS CONTROL

WEIGH SCALES

DESCRIPTION

The ADS1244 is a 24-bit, delta-sigma Analog-to-Digital (A/D)

converter. It offers excellent performance and very low power

in an MSOP-10 package and is well suited for demanding

high-resolution measurements, especially in portable and

other space- and power-constrained systems.

A 3rd-order delta-sigma modulator and digital filter form the

basis of the A/D converter. The analog modulator has a ±5V

differential input range. The digital filter rejects both 50Hz

and 60Hz signals, completely settles in one cycle, and

outputs data at 15 samples per second.

A simple, 2-wire serial interface provides all the necessary

control. Data retrieval, self-calibration, and Sleep Mode are

handled with a few simple waveforms. When only single

conversions are needed, the ADS1244 can be shut down

(Sleep Mode) while idle between measurements to dramatically

reduce the overall power dissipation. Multiple ADS1244s

can be connected together to create a synchronously sampling

multichannel measurement system. The ADS1244 is

designed to easily connect to microcontrollers, such as the

MSP430.

The ADS1244 supports 2.5V to 5.25V analog supplies and

1.8V to 3.6V digital supplies. Power is typically less than

270μW in normal operation and less than 1μW during Sleep

Mode.