ADS8688AIDBT
Active16-BIT, 500-KSPS, 8-CHANNEL SAR ADC WITH BIPOLAR INPUTS USING 5-V SUPPLY AND LOW-DRIFT VREF
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ADS8688AIDBT
Active16-BIT, 500-KSPS, 8-CHANNEL SAR ADC WITH BIPOLAR INPUTS USING 5-V SUPPLY AND LOW-DRIFT VREF
Technical Specifications
Parameters and characteristics for this part
| Specification | ADS8688AIDBT |
|---|---|
| Architecture | SAR |
| Configuration | PGA, MUX, S/H, ADC |
| Data Interface | SPI |
| Features | PGA |
| Input Type | Single Ended, Differential |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 1 |
| Number of Bits | 16 |
| Number of Inputs | 8 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 38-TFSOP |
| Package / Case [custom] | 4.4 mm |
| Package / Case [custom] | 0.173 in |
| Ratio - S/H:ADC | 1:1 |
| Reference Type | External, Internal |
| Sampling Rate (Per Second) | 500k |
| Supplier Device Package | 38-TSSOP |
| Voltage - Supply, Analog | 5 V |
| Voltage - Supply, Digital [Max] | 5.25 V |
| Voltage - Supply, Digital [Min] | 1.65 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 20.38 | |
| 10 | $ 18.79 | |||
| 50 | $ 17.95 | |||
| 100 | $ 16.05 | |||
| 250 | $ 15.31 | |||
| 500 | $ 14.57 | |||
| Texas Instruments | TUBE | 1 | $ 17.35 | |
| 100 | $ 15.16 | |||
| 250 | $ 11.69 | |||
| 1000 | $ 10.45 | |||
Description
General part information
ADS8688AT Series
The ADS8684A and ADS8688A are 4- and 8-channel, integrated data acquisition systems based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500 kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20 V, a 4- or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096-V reference with low temperature drift. Operating on a single 5-V analog supply, each input channel on the devices can support true bipolar input ranges of ±10.24 V, ±5.12 V, ±2.56 V, ±1.28V and ±0.64V, as well as unipolar input ranges of 0 V to 10.24 V, 0 V to 5.12 V, 0 V to 2.56 V and 0 V to 1.28 V. The gain of the analog front-end for all input ranges is accurately trimmed to ensure a high dc precision. The input range selection is software-programmable and independent for each channel. The devices offer a 1-MΩ constant resistive input impedance irrespective of the selected input range.
The ADS8684A and ADS8688A offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65 V to 5.25 V, enabling direct interface to a wide range of host controllers.
The ADS8684A and ADS8688A are 4- and 8-channel, integrated data acquisition systems based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500 kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20 V, a 4- or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096-V reference with low temperature drift. Operating on a single 5-V analog supply, each input channel on the devices can support true bipolar input ranges of ±10.24 V, ±5.12 V, ±2.56 V, ±1.28V and ±0.64V, as well as unipolar input ranges of 0 V to 10.24 V, 0 V to 5.12 V, 0 V to 2.56 V and 0 V to 1.28 V. The gain of the analog front-end for all input ranges is accurately trimmed to ensure a high dc precision. The input range selection is software-programmable and independent for each channel. The devices offer a 1-MΩ constant resistive input impedance irrespective of the selected input range.
Documents
Technical documentation and resources
