ADS891xB 18-Bit, High-Speed SAR ADCs With Integrated Reference Buffer and Enhanced Performance Features

1 Features

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: ±V_REF
- V_REF 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
- ADS8914B : 14-mW at 250-kSPS
Enhanced-SPI Digital Interface
- Interface SCLK: 20-MHz at 1-MSPS
- Configurable Data Parity Output
Extended Temperature Range: –40°C to +125°C
Small Footprint: 4-mm × 4-mm VQFN