ADS8914B - Texas Instruments

ADS8914B High-Speed SAR ADCs

The ADS8910B, ADS8912B, and ADS8914B (ADS891xB) belong to a family of pin-to-pin compatible, high-speed, single-channel, highprecision, 18-bit successive approximation register (SAR) analog-to-digital convertors (ADCs) with an integrated reference buffer and integrated lowdropout regulator (LDO). The device family includes the ADS890xB (20-bit) and ADS892xB .

Features

1 Features
•1 Resolution: 18-Bits
• High Sample Rate With No Latency Output:
  – ADS8910B: 1-MSPS
  – ADS8912B: 500-kSPS
  – ADS8914B: 250-kSPS
• Integrated LDO Enables Single-Supply Operation
• Low-Power Reference Buffer With No Droop
• Excellent AC and DC Performance:
  – SNR: 102.5-dB, THD:
  –125-dB
  – INL: ±0.5-LSB
  – DNL: ±0.2-LSB, 18-Bit No-Missing-Codes
• Wide Input Range:
  – Unipolar Differential Input Range: ±VREF
  – VREF Input Range: 2.5-V to 5-V
• Single-Supply, Low-Power Operation (Includes Internal Reference Buffer and LDO)
  – ADS8910B : 21-mW at 1-MSPS
  – ADS8912B : 16-mW at 500-kSPS
  – ADS8914.