ADC121S625 - 12 位、50 ksps 至 200 ksps、差动输入、微功耗采样 A/D 转换器

ADC121S625是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，ADC121S625是12 位、50 ksps 至 200 ksps、差动输入、微功耗采样 A/D 转换器，本站介绍了ADC121S625的封装应用图解、特点和优点、功能等，并给出了与ADC121S625相关的TI元器件型号供参考。

ADC121S625 - 12 位、50 ksps 至 200 ksps、差动输入、微功耗采样 A/D 转换器 - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADC121S625 is a 12-bit, 50 ksps to 200 ksps sampling Analog-to-Digital (A/D) converter that features a fully differential, high impedance analog input and an external reference. While best performance is achieved with reference voltage between 500mV and 2.5V, the reference voltage can be varied from 100mV to 2.5V, with a corresponding resolution between 49µV and 1.22mV.

The output serial data is binary 2's complement, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and with many common DSP serial interfaces. The differential input, low power, automatic power down, and small size make the ADC121S625 ideal for direct connection to transducers in battery operated systems or remote data acquisition applications.

Operating from a single +5V supply, the normal power consumption is reduced to a few nanowatts in the power-down mode. The ADC121S625 is a pin-compatible superior replacement for the ADS7817 and is available in the VSSOP-8 package. Operation is ensured over the industrial temperature range of −40°C to +85°C and clock rates of 800 kHz to 3.2 MHz.

产品特性

True Differential Inputs
Ensured Performance from 50ksps to 200ksps
External Reference
High AC Common-Mode Rejection
SPI™/QSPI™/MICROWIRE/DSP Compatible Serial Interface

Key Specifications

Conversion Rate 50 to 200 ksps
Offset Error 0.4 LSB (typ)
Gain Error 0.05 LSB (typ)
INL ± 1 LSB (max)
DNL ± 0.75 LSB (max)
CMRR 82 dB (typ)
Power Consumption
- Active, 200 ksps 2.25 mW (typ)
- Active, 50 ksps 1.33 mW (typ)
- Power Down 60 nW (typ)

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