ADS8885 - Texas Instruments

ADS8885 SAR Analog-to-Digital Converter

The ADS8885 is an 18-bit, 400-kSPS, true-differential input, analog-to-digital converter (ADC). The device operates with a 2.5-V to 5-V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD). The device offers an .

Features

1
•234 Sample Rate: 400 kHz
• No Latency Output
• Unipolar, True-Differential Input Range:
  –VREF to +VREF
• Wide Common-Mode Voltage Range: 0 V to VREF with 90-dB CMRR (min)
• SPI™-Compatible Serial Interface with Daisy-Chain Option
• Excellent AC and DC Performance:
  – SNR: 100 dB, THD:
  –115 dB
  – INL: ±1.5 LSB (typ), ±3.0 LSB (max)
  – DNL: +1.5 and
  –1 LSB (max), 18-Bit NMC
• Wide Operating Range:
  – AVDD: 2.7 V to 3.6 V
  – DVDD: 1.65 V to 3.6 V (Independent of AVDD)
  – REF: 2.5 V to 5 V (Independent of AVDD)
  – Operating Temperature:
  –40°C to +85°C
• Low-Power Dissipation:
  – 2.6 mW at 400 kSPS
  – 0..