SAR ADC
SAR ADC
Leveraging our unique low-power architecture and patents, we offer ultra-low-power CMOS Hall sensors. With high signal-to-noise ratio signal reconstruction technology, we also provide ultra-high sensitivity magnetic field sampling products.
Product Model
DAD7616
The DAD7616 is a 16-bit, DAS that supports dual simultaneous sampling of 16 channels. The DAD7616 operates from a single 5 V supply and can accommodate ±10 V, ±5 V, and ±2.5 V true bipolar input signals while sampling at throughput rates up to 2 MSPS per channel pair with 90.5 dB SNR. Higher SNR performance can be achieved with the on-chip oversampling mode (91.1 dB for an oversampling ratio (OSR) of 2). The input clamp protection circuitry can tolerate voltages up to ±16 V. The DAD7616 has 1 MΩ analog input impedance, regardless of sampling frequency. The single-supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies.
The device contains analog input clamp protection, a dual, 16-bit charge redistribution SAR analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.
The DAD7616 is serial peripheral interface (SPI)/QSPI/DSP/MICROWIRE compatible.
Features
- 16-channel, dual, simultaneously sampled inputs.
- Independently selectable channel input ranges.
- True bipolar: ±10 V, ±5 V, ±2.5 V.
- Single 5 V analog supply and 2.3 V to 5.5 V V Drive supply.
- Fully integrated data acquisition solution.
Input buffer with 1 MΩ analog input impedance.
First-order anti-aliasing analog filter.
On-chip accurate reference voltage and reference voltage buffer.
Dual 16-bit successive approximation register (SAR) ADC.
Throughput rate: 2 × 1 MSPS.
Oversampling capability with digital filter.
Flexible sequencer with burst mode.
- Flexible parallel/serial interface.
Optional Cyclic Redundancy Check (CRC) error checking.
- Hardware/software configuration.
- Performance.
−101 dB THD.
±1 LSB INL (typical), ±0.99 LSB DNL (maximum).
8 kV ESD rating on analog input channels.
- On-chip self detect function.
- Low power consumption: 150mW.
- 80-lead LQFP package.
Applications
- Power line monitoring
- Protective relays
- Multiphase motor control
- Instrumentation and control systems
- Data acquisition systems (DAS)
Specifications
Product Model | Resolution (bits) | Sampling Rate | Channel | SNR (dBFS) | SFDR (dBc) | Power Dissipation (mw) | Temperature Range (°C) | Package Type | Datasheet |
|---|---|---|---|---|---|---|---|---|---|
DAD7616 | 16 | 1MSPS*2 | 16 | 90.5 | -110 | 130 | -40°C ~ 125°C | TQFP-80 |
