ADS7871 具有 ADC、MUX、PGA 和内部基准的 14 位 48KSPS DAS

ADS7871
Resolution(Bits) 14
Sample Rate (max) 48kSPS
Architecture SAR
Power Consumption(Typ)(mW) 6.5
DNL(Max)(+/-LSB) 0.5
INL(Max)(+/-LSB) 2
No Missing Codes(Bits) 13
No. of Supplies 1
Analog Voltage AV/DD(Min)(V) 2.7
Analog Voltage AV/DD(Max)(V) 5.25
Logic Voltage DV/DD(Min)(V) 2.7
Logic Voltage DV/DD(Max)(V) 5.25
Input Configuration Range Vref/PGA
Reference Mode Int
Rating Catalog
Pin/Package 28SSOP
# Input Channels 8
Operating Temp Range(Celsius) -40 to 85

The ADS7871 (US patents 6140872, 6060874) is a complete low power data acquisition system on a single chip. It consists of a 4-channel differential/8-channel single-ended multiplexer, precision programmable gain amplifier, 14-bit successive approximation analog-to-digital (A/D) converter and a precision voltage reference.

The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise.

For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D input.

The offset voltage of the PGA is auto zeroed. Gains of 1, 2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125 mV to produce full-scale digital outputs.

ADS7871 特性
ADS7871 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚
ADS7871IDB ACTIVE -40 to 85 5.50 | 1ku SSOP (DB) | 28
ADS7871IDBG4 ACTIVE -40 to 85 5.50 | 1ku SSOP (DB) | 28
ADS7871IDBR ACTIVE -40 to 85 5.00 | 1ku SSOP (DB) | 28
ADS7871IDBRG4 ACTIVE -40 to 85 5.00 | 1ku SSOP (DB) | 28
ADS7871 应用技术支持与电子电路设计开发资源下载
  1. ADS7871 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器仪ADC 模数转换器产品选型与价格 . xls