Texas Instruments ADS7066 16-Bit Analog-to-Digital Converter (ADC)
Texas Instruments ADS7066 16-Bit Analog-to-Digital Converter (ADC) is a small 8-channel, high-precision successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS7066 has an integrated capless reference and a reference buffer that help reduce the overall solution size by requiring fewer external components. The wafer-level chip-scale package and fewer external components make the Texas Instruments ADS7066 suitable for space-constrained applications.
The ADS7066 features built-in offset calibration for improved accuracy over the system's wide operating conditions. The programmable averaging filters enable higher-resolution measurements. The eight channels of the ADS7066 can be individually configured as analog inputs, digital inputs, or digital outputs, enabling smaller system sizes and simplifying circuit design for mixed-signal feedback and digital control.
The enhanced SPI enables the ADS7066 to achieve high throughput at lower clock speeds, simplifying the board layout and lowering system cost. The ADS7066 features a cyclic redundancy check (CRC) for data read and write operations and the power-up configuration.
Features
- Small solution size
- 1.62mm × 1.62mm WCSP
- Space-saving, capless, 2.5V internal reference
- Eight channels configurable as any combination of
- Up to eight analog inputs, digital inputs, or digital outputs
- Programmable averaging filters
- Programmable sample size for averaging
- Averaging with internal conversions
- 20-bit resolution for average output
- Low-leakage multiplexer with channel sequencer
- Manual mode
- On-the-fly mode
- Auto-sequence mode
- Excellent AC and DC performance
- 86dB SNR, –100dB THD
- Improved SNR with programmable averaging filters
- INL (±1LSB, 16-bit, no missing codes)
- Internal calibration improves offset and drift
- 250kSPS high sample rate with no latency output
- Wide operating range
- 0V to VREF and 2 x VREF ADC input range
- 3V to 5.5V analog supply
- 1.65V to 5.5V digital supply
- –40°C to +125°C temperature range
- Enhanced SPI digital interface
- High-speed, 60MHz SPI interface
- Achieve full throughput with > 4.5MHz SPI
Applications
- Optical modules
- Optical line cards
- Multiparameter patient monitors
Functional Block Diagram
Related Development Tool
Texas Instruments ADS7066EVM-PDK ADC Evaluation Module (EVM)
Performance demonstration kit (PDK) platform for evaluating the performance of the ADS7066.