ADS7844 12 位 8 通道串行输出采样模数转换器

ADS7844
Resolution(Bits) 12
Sample Rate (max) 200kSPS
Architecture SAR
Power Consumption(Typ)(mW) 0.84
SINAD(dB) 72
SNR(dB) 72
SFDR(dB) 78
DNL(Max)(+/-LSB) 1
INL(Max)(+/-LSB) 1
No Missing Codes(Bits) 12
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
Reference Mode Ext
Rating Catalog
Pin/Package 20SSOP, 20SSOP/QSOP
# Input Channels 8
Operating Temperature Range(°C) -40 to 85 

The ADS7844 is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 1µW. The ADS7844 is guaranteed down to 2.7V operation.

Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition.

ADS7844 特性
ADS7844 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚
ADS7844E ACTIVE   3.20 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844E/2K5 ACTIVE -40 to 85 2.90 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844E/2K5G4 ACTIVE -40 to 85 2.90 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844EB ACTIVE   3.75 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844EB/2K5 ACTIVE   3.50 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844EB/2K5G4 ACTIVE   3.50 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844EBG4 ACTIVE   3.75 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844EG4 ACTIVE   3.20 | 1ku SSOP/QSOP (DBQ) | 20
ADS7844N ACTIVE   3.20 | 1ku SSOP (DB) | 20
ADS7844N/1K ACTIVE -40 to 85 2.90 | 1ku SSOP (DB) | 20
ADS7844N/1KG4 ACTIVE -40 to 85 2.90 | 1ku SSOP (DB) | 20
ADS7844NB ACTIVE   3.75 | 1ku SSOP (DB) | 20
ADS7844NB/1K ACTIVE   3.50 | 1ku SSOP (DB) | 20
ADS7844NB/1KG4 ACTIVE   3.50 | 1ku SSOP (DB) | 20
ADS7844NBG4 ACTIVE   3.75 | 1ku SSOP (DB) | 20
ADS7844NG4 ACTIVE   3.20 | 1ku SSOP (DB) | 20
ADS7844 应用技术支持与电子电路设计开发资源下载
  1. ADS7844 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