ADS8681IPW Part Information
Details for ADS8681IPW by Texas Instruments
Semiconductors - ICs > Data & Signal Conversion > Analog-to-Digital Converters - ADC
Part Description
The ADS8681, ADS8685, and ADS8689 devices belong to a family of integrated data acquisition system based on a successive approximation (SAR) analog-to-digital converter (ADC). The devices feature a high-speed, high-precision SAR ADC, integrated analog front-end (AFE) input driver circuit, overvoltage protection circuit up to ±20 V, and an onchip 4.096-V reference with extremely low temperature drift. The devices operate on a single 5-V analog supply, but support true bipolar input ranges of ±12.288 V, ±6.144 V, ±10.24 V, ±5.12 V, and ±2.56 V, as well as unipolar input ranges of 0 V to 12.288 V, 0 V to 10.24 V, 0 V to 6.144 V, and 0 V to 5.12 V. The gain and offset errors are accurately trimmed within the specified values for each input range to ensure high dc precision. The input range selection is done by software programming of the device internal registers. The devices offer a high resistive input impedance (≥ 1 MΩ) irrespective of the selected input range. The multiSPI digital interface is backward-compatible to the traditional SPI protocol. Additionally, configurable features simplify interface to a wide range of host controllers.
Part Downloads
Download PCB Footprint from Ultra Librarian
Part Features
- 16-Bit ADC with Integrated Analog Front-End
- 5-V Analog Supply: 1.65-V to 5-V I/O Supply
- ALARM u2192 High, Low Thresholds per Channel
- Constant Resistive Input Impedance u2265 1 Mu03a9
- Excellent Performance: u2013 DNL: u00b10.4 LSB; INL: u00b10.5 LSB u2013 SNR: 92 dB; THD: u2013107 dB
- Extended Industrial Temperature Range:
- High Speed: u2013 ADS8681: 1 MSPS u2013 ADS8685: 500 kSPS u2013 ADS8689: 100 kSPS
- Input Overvoltage Protection: Up to u00b120 V
- On-Chip, 4.096-V Reference with Low Drift
- Software Programmable Input Ranges: u2013 Bipolar Ranges: u00b112.288 V, u00b110.24 V, u00b16.144 V, u00b15.12 V, and u00b12.56 V u2013 Unipolar Ranges: 0 Vu201312.288 V, 0 Vu201310.24 V, 0 Vu20136.144 V, and 0 Vu20135.12 V
- multiSPIu2122 Interface with Daisy-Chain
Part Specifications
| Resolution (Bits) | 16bit |
| Sampling Rate | 1MSPS |
| Input Channel Type | Single Ended |
| Data Interface | SPI |
| Supply Voltage Type | Single |
| Supply Voltage Min | 4.75V |
| Supply Voltage Max | 5.25V |
| ADC / DAC Case Style | TSSOP |
| No. of Pins | 16Pins |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 125°C |
| Product Range | Single 16-Bit SAR ADCs |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | MSL 3 - 168 hours |
| SVHC | No SVHC (27-Jun-2018) |
Alternative Part Descriptions
- 16-Bit, 1-MSPS, 1-Ch SAR ADC with programmable (±12/±10/±6/±5/±2.5V) input ranges on +5V supply | Texas Instruments