Texas Instruments ADS127L01 Delta-Sigma Wide-Bandwidth ADC
Texas Instruments ADS127L01 Delta-Sigma Wide-Bandwidth Analog-to-Digital Converter (ADC) is a 24-bit, delta-sigma analog-to-digital converter (ADC) with data rates up to 512kSPS. This device offers a unique combination of excellent dc accuracy and outstanding ac performance. The high-order, chopper-stabilized modulator achieves a very low drift with low in-band noise. The on-chip decimation filter suppresses modulator out-of-band noise. In addition to a low-latency filter, the Texas Instruments ADS127L01 provides multiple wideband filters with less than ±0.00004 dB of ripple and an option for –116dB stop-band attenuation at the Nyquist rate. A variety of operating modes allows for optimization of speed, resolution, and power. A programmable serial interface with one of three options (SPI, frame-sync slave, or frame-sync master) provides convenient interfacing across isolation barriers to microcontrollers or digital signal processors (DSPs).Features
- Up to 512kSPS data rates
- AC performance
- Up to 230kHz passband
- Up to 115.5dB (at OSR 256) SNR
- –126dB (LP and VLP modes) THD
- DC Accuracy
- 1.5µV/°C offset drift
- 0.2ppm/°C gain drift
- Operating Modes
- 111dB SNR (128kSPS at 26mW) HR
- 108dB SNR (128kSPS at 15mW) LP
- V105dB SNR (128kSPS at 9mW) LP
- Digital filter options
- Sinc frequency response low-latency filter
- (0.45 to 0.55) × fDATA transition band wideband 1 filter
- (0.40 to 0.50) × fDATA transition band wideband 2 filter
- SPI™ or frame-sync serial interface, daisy-chain compatible
- 2.7V to 3.6V analog supply
- 1.7V to 3.6V digital supply
- –40°C to +125°C operating temperature
Applications
- Vibration and modal analysis
- Data acquisition systems
- Acoustics and dynamic strain gauges
- Power quality analysis
Block Diagram
發佈日期: 2016-08-03
| 更新日期: 2022-03-11
