0
ACTIVE
Resolution (Bits) |
18 |
Sample rate (max) (ksps) |
1000 |
Number of input channels |
1 |
Interface type |
SPI |
Architecture |
SAR |
Input type |
Differential |
Rating |
Catalog |
Reference mode |
External |
Input voltage range (max) (V) |
5 |
Input voltage range (min) (V) |
0 |
Features |
Daisy-Chainable, Oscillator, Small Size |
Operating temperature range (°C) |
-40 to 85 |
Power consumption (typ) (mW) |
5.5 |
Analog supply voltage (min) (V) |
2.7 |
Analog supply voltage (max) (V) |
3.6 |
SNR (dB) |
100 |
Digital supply (min) (V) |
1.65 |
Digital supply (max) (V) |
3.6 |
VSON (DRC)-10-9 mm² 3 x 3
The ADS8881 is an 18-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 ADS8881 excellent for lower-speed applications.
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