ADS8861IDGSR Data Converter IC ADC 16B 1MSPS Mini Diff Input SAR ADC
dac integrated circuit
,da converter chip
ADS8861IDGSR Data Converter IC ADC 16B 1MSPS Mini Diff Input SAR ADC
FEATURES
- Sample Rate: 1 MHz
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No Latency Output
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Unipolar, True-Differential Input Range:
–VREF to +VREF
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Wide Common-Mode Voltage Range:
0 V to VREF with 90-dB CMRR (min)
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SPITM-Compatible Serial Interface with Daisy-Chain Option
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Excellent AC and DC Performance:
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– SNR: 96 dB, THD: –115 dB
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– INL: ±1.0 LSB (max)
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– DNL: ±1.0 LSB (max), 16-Bit NMC
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Wide Operating Range:
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– AVDD:2.7Vto3.6V
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– DVDD:2.7Vto3.6V (Independent of AVDD)
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– REF: 2.5 V to 5 V (Independent of AVDD)
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– Operating Temperature: –40°C to +85°C
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Low-Power Dissipation:
– 5.5mWat1MSPS
– 0.55 mW at 100 kSPS – 55μWat10kSPS
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Power-Down Current (AVDD): 50 nA
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Full-Scale Step Settling to 16 Bits: 290 ns
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Packages: MSOP-10 and SON-10
APPLICATIONS
• Automatic Test Equipment (ATE)
• Instrumentation and Process Controls
• Precision Medical Equipment
• Low-Power, Battery-Operated Instruments
DESCRIPTION
The ADS8861 is a 16-bit, 1-MSPS, 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 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, true-differential analog input signals with a differential input swing of –VREF to +VREF. This true-differential analog input structure allows for a common-mode voltage of any value in the range of 0 V to +VREF (when both inputs are within the operating input 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 ADS8861 excellent for lower-speed applications.
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