ADS8668IDBTR
Active12-BIT 500KSPS 8-CHANNEL SAR ADC WITH BIPOLAR INPUTS OFF 5V SUPPLY
ADS8668IDBTR
Active12-BIT 500KSPS 8-CHANNEL SAR ADC WITH BIPOLAR INPUTS OFF 5V SUPPLY
Description
General part information
ADS8668 Series
The ADS8664 and ADS8668 are 4- and 8-channel, integrated data acquisition systems based on a 12-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 ADS8664 and ADS8668 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 ADS8664 and ADS8668 are 4- and 8-channel, integrated data acquisition systems based on a 12-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.
Technical Specifications
Parameters and characteristics for this part
| Specification | ADS8668IDBTR |
|---|---|
| Architecture | SAR |
| Configuration | PGA-MUX-S, H-ADC |
| Data Interface | SPI |
| Features | PGA |
| Input Type | Single Ended |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 1 count |
| Number of Bits | 12 bits |
| Number of Inputs | 8 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Package Length | 0.173 in |
| Package Name | 38-TSSOP, 38-TFSOP |
| Package Width | 4.4 mm |
| Ratio - ADC | 1 |
| Ratio - S/H | 1 |
| Reference Type | Internal |
| Sampling Rate (Per Second) | 500 kHz |
| Voltage - Supply, Analog (Max) | 5.25 V |
| Voltage - Supply, Analog (Min) | 4.75 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
Sign in to see pricing
Create a free account to access distributor pricing data.
CAD
3D models and CAD resources for this part
Documents
Technical documentation and resources