| 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 |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 35 |
| 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 |
- 20μs max CONVERSION TIME
- SINGLE +5V SUPPLY OPERATION
- PIN-COMPATIBLE WITH 16-BIT ADS7813
- EASY-TO-USE SERIAL INTERFACE
- 0.3" DIP-16 AND SO-16
- ±0.5LSB max INL AND DNL
- 72dB min SINAD
- USES INTERNAL OR EXTERNAL REFERENCE
- MULTIPLE INPUT RANGES
- 35mW max POWER DISSIPATION
- NO MISSING CODES
- 50μW POWER DOWN MODE
- APPLICATIONS
- DATA ACQUISITION SYSTEMS
- INDUSTRIAL CONTROL
- TEST EQUIPMENT
- DIGITAL SIGNAL PROCESSING
Note: Recommended Voltage Reference: REF02 and REF102
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The ADS7812 is a low-power, single +5V supply, 12-bit sampling analog-to-digital converter. It contains a complete 12-bit capacitor-based SAR A/D with a sample/hold, clock, reference, and serial data interface.
The converter can be configured for a variety of input ranges including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high impedance 0.3V to 2.8V input range is also available (input impedance > 10M
). For most input ranges, the input voltage can swing to +16.5V or ?16.5V without damage to the converter.
A flexible SPI compatible serial interface allows data to be synchronized to an internal or external clock. The ADS7812 is specified at a 40kHz sampling rate over the ?40°C to +85°C temperature range. It is available in a 0.3" DIP-16 or an SO-16 package.