| Resolution (Bits) | 12 |
| Number of input channels | 1 |
| Sample rate (Max) (kSPS) | 40 |
| Interface type | SPI |
| Architecture | SAR |
| Input type | Single-Ended |
| Rating | Catalog |
| Reference mode | Ext, Int |
| Input range (Max) (V) | 10 |
| Input range (Min) (V) | -10 |
| Features | Oscillator |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 155 |
| Analog voltage AVDD (Min) (V) | 4.75 |
| SNR (dB) | 74 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 0.5 |
| Digital supply (Min) (V) | 4.75 |
| Digital supply (Max) (V) | 5.25 |
- 40-kHz Minimum Sampling Rate
- Very Low Power: 25 mW
- ±3.33-V, ±5-V, ±10-V, 4-V, and 10-V Input Ranges
- 73.9-dB SINAD with 10-kHz Input
- ±0.5 LSB Max INL
- ±0.5 LSB Max DNL, 12-Bit NMC
- ±5-mV BPZ, ±2 ppm/°C BPZ Drift
- 72-dB Min SINAD, 80-dB Min SFDR
- Uses Internal or External 2.5-V Reference
- No External Calibration Resistors Required
- Single 5-V Analog Supply:
- 32.5-mW Max Power Dissipation
- 50-μW Max Power-Down Mode
- SPI-Compatible Serial Port up to 20MHz, with Master/Slave Feature
- Global CONV and 3-Stated Bus for Multi-Chip Simultaneous S/H Operation
- Pin-Compatible with ADS7812 and 16-Bit ADS7813/8513
- SO-16 Package
- APPLICATIONS
- Industrial Process Control
- Test Equipment
- Robotics
- DSP Servo Control
- Medical Instrumentation
- Portable Data Acquisition Systems
The ADS8512 is a complete low-power, single 5-V supply, 12-bit sampling analog-to-digital(A/D) converter. It contains a complete 12-bit capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold (S/H), clock, reference, and serial data interface. The converter can be configured for a variety of input ranges including ±10 V, ±5 V, 0 V to 10 V, and 0.5 V to 4.5 V. A high-impedance, 0.3-V to 2.8-V input is also available with input impedance greater than 10 MΩ. For most input ranges, the input voltage can swing to 25 V or -25 V without damage to the converter.
An SPI-compatible serial interface allows data to be synchronized to an internal or external clock. The ADS8512 is specified at 40-kHz sampling rate over the -40°C to +85°C industrial temperature range.