ADS127L11IRUKT集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS127L11IRUKT属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS127L11IRUKT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。

1 Features

• Programmable data rate:

– Up to 400 kSPS (wideband filter)

– Up to 1.067 MSPS (low-latency filter)

• Selectable digital filter:

– Wideband or low-latency

• AC accuracy with dc precision:

– Dynamic range: 111.5 dB (200 kSPS)

– THD: –120 dB

– INL: 0.9 ppm of FS

– Offset drift: 50 nV/°C

– Gain drift: 0.6 ppm/°C

• Power-scalable architecture:

– High-speed mode: 400 kSPS, 18.6 mW

– Low-speed mode: 50 kSPS, 3.3 mW

• Input and reference precharge buffers

• Internal or external clock

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

2 Applications

• Test and measurement:

– Data acquisition (DAQ)

– Shock and vibration instruments

– Acoustics and dynamic strain gauges

• Factory automation and control:

– Condition monitoring

• Aerospace and defense:

– SONAR

• Medical:

– Electroencephalogram (EEG)

• Grid Infrastructure:

– Power quality analyzer

3 Description

The ADS127L11 is a 24-bit, delta-sigma (ΔΣ), analogto-

digital converter (ADC) with data rates up to

400 kSPS using the wideband filter and up to

1067 kSPS using the low-latency filter. The device

offers an excellent combination of ac performance

and dc precision with low power consumption

(18.6 mW in high-speed mode).

The device integrates input and reference buffers

to reduce signal loading. The low-drift modulator

achieves excellent dc precision with low in-band noise

for outstanding ac performance. The power-scalable

architecture provides two speed modes to optimize

data rate, resolution, and power consumption.

The digital filter is configurable for wideband or lowlatency

operation, allowing wideband ac performance

or data throughput for dc signals to be optimized, all in

one device.

The serial interface features daisy-chain capability to

reduce the SPI I/O over an isolation barrier. Input and

output data and register settings are validated by a

cyclic-redundancy check (CRC) feature to enhance

operational reliability.

The small 3-mm × 3-mm WQFN and 6.5-mm × 4.4-

mm TSSOP packages are designed for limited space

applications. The device is fully specified for operation

over the –40°C to +125°C temperature range.