Description

The A0T-1615-3D is a dual channel Analog Front End (AFE) that features two synchronous sampling Delta-Sigma Analog-to-Digital Converters (ADC), two PGAs, a phase delay compensation block, an internal voltage reference, a modulator output block, and a high-speed 20 MHz SPI compatible serial interface. It utilizes a proprietary dithering algorithm for reduced idle tones and improved total harmonic distortion (THD).

Specifications and features

- Two Synchronous Sampling 16/24-bit Resolution Delta-Sigma A/D Converters with Proprietary Multi-Bit Architecture

- 91 dB SINAD, -104 dBc Total Harmonic Distortion (THD) (up to 35th harmonic), 109 dB Spurious-free Dynamic Range (SFDR) for Each Channel

- Programmable Data Rate up to 64 ksps

- Ultra Low-Power Shutdown mode with less than 2 µA

- -133 dB Crosstalk Between the Two Channels

- Low Drift Internal Voltage Reference: 12 ppm/°C

- Differential Voltage Reference Input Pins

- High Gain PGA on Each Channel (up to 32 V/V)

- Phase Delay Compensation Between the Two Channels with 1 µs Time Resolution

- Separate Modulator Outputs for Each Channel

- High-Speed, Addressable 20 MHz SPI Interface with Mode 0,0 and 1,1 Compatibility

- Independent Analog and Digital Power Supplies: 4.5V-5.5V AVDD, 2.7V-5.5V DVDD

- Low-Power Consumption: 14 mW typical at 5V

- Available in Small 20-lead SSOP and QFN Packages

- Industrial Temperature Ranges: - Industrial: -40°C to +85°C, Extended: -40°C to +125°C

Application Scenarios

- Energy Metering and Power Measurement

- Automotive

- Portable Instrumentation

- Medical and Power Monitoring