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ADS8864 데이터시트

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ADS8864 16-Bit, 400-kSPS, Serial Interface, microPower, Miniature, Single-Ended Input, SAR Analog-to-Digital Converter TI
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DESCRIPTION
The ADS8864 is a 16-bit, 400-kSPS, single-ended 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 SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices. An optional busy- indicator bit makes synchronizing with the digital host easy.
The device supports unipolar single-ended analog inputs in the range of –0.1 V to VREF + 0.1 V. Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS8864 excellent for lower-speed applications.

FEATURES
• Sample Rate: 400 kHz
• No Latency Output
• Unipolar, Single-Ended Input Range:
   0 to +VREF
• SPI™-Compatible Serial Interface with
   Daisy-Chain Option
• Excellent AC and DC Performance:
   – SNR: 93 dB, THD: –108 dB
   – INL: ±1.0 LSB (typ), ±2.0 LSB (max)
   – DNL: ±1.0 LSB (max), 16-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
   – 0.65 mW at 100 kSPS
   – 65 µW at 10 kSPS
• Power-Down Current (AVDD): 50 nA
• Full-Scale Step Settling to 16 Bits: 1200 ns
• Packages: MSOP-10 and SON-10

APPLICATIONS
• Automatic Test Equipment (ATE)
• Instrumentation and Process Controls
• Precision Medical Equipment
• Low-Power, Battery-Operated Instruments

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