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.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
ADS8881x | VSSOP (10) | 3.00 mm × 3.00 mm |
VSON (10) | 3.00 mm × 3.00 mm |
Changes from C Revision (July 2014) to D Revision
Changes from B Revision (December 2014) to C Revision
Changes from A Revision (July 2013) to B Revision
Changes from * Revision (May 2013) to A Revision
PART NUMBER | NAME |
---|---|
REF5045 | Low Noise, Very Low Drift, Precision Voltage Reference |
THS4281 | Very Low-Power High Speed Rail-To-Rail Input/Output Voltage Feedback Operational Amplifier |
REF2925 | 2.5V 100ppm/Degrees C, 50uA in SOT23-3 Series (Bandgap) Voltage Reference |
AFE5808A | Fully Integrated, 8 Channel Ultrasound Analog Front End with Passive CW Mixer |
LMK04803 | Low Noise Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 1.9 GHz VCO |