ADS8285 18 Bit, 1 MSPS, Unipolar Single End SAR ADC with On-Chip ADC Driver

ADS8284 ADS8285
Resolution(Bits) 18 18
Sample Rate (max) 1MSPS 1MSPS
Architecture SAR SAR
SINAD(dB) 98.3 98.4
SNR(dB) 97.5 97.5
SNR(Typ)(dB) 98.4 98.4
SFDR(dB) 121 121
DNL(Max)(+/-LSB) +1.5 / -1 +1.5 / -1
INL(Max)(+/-LSB) +/-2.5 2.5
No Missing Codes(Bits) 18 18
ENOB(Bits) 15.9 15.9
No. of Supplies 4 4
Analog Voltage AV/DD(Min)(V) 4.75 4.75
Analog Voltage AV/DD(Max)(V) 5.25 5.25
Logic Voltage DV/DD(Min)(V) 2.7 2.7
Logic Voltage DV/DD(Max)(V) 5.25 5.25
Input Configuration Range +/-Vref Vref
Reference Mode Int and Ext Int and Ext
Rating Catalog Catalog
Pin/Package 64VQFN 64VQFN
# Input Channels 4 4
Operating Temperature Range (°C) -40 to 85

The ADS8285 is a high-performance analog system-on-chip (SoC) device with an 18-bit, 1-MSPS A/D converter, 4-V internal reference, an on-chip ADC driver (OPA), and a 8-channel single ended multiplexer. The channel count of the multiplexer and auto/manual scan modes of the device are user selectable.

The ADC driver is designed to leverage the very high noise performance of the differential ADC at optimum power usage levels.

The ADS8285 outputs a buffered reference signal for level shifting of a ±4-V bipolar signal with an external resistance divider. A Vref/2 output signal is available to set the offset of a signal conditioning circuit. The device also includes an 18-/16-/8-bit parallel interface.

ADS8285 特性
ADS8285 芯片订购指南
器件 状态 封装 | 引脚
ADS8285IBRGCR PREVIEW VQFN(RGC) | 64
ADS8285IBRGCT PREVIEW VQFN(RGC) | 64
ADS8285IRGCR PREVIEW VQFN(RGC) | 64
ADS8285IRGCT PREVIEW VQFN(RGC) | 64
ADS8285 应用技术支持与电子电路设计开发资源下载
  1. ADS8285 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