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ADS1256 24-bit ADC
ADS1256
Texas Instrumentsic data converter
The ADS1256 is a 24-bit low-noise analog-to-digital converter designed for high-resolution scientific and industrial applications.
In stock
Specifications
8- Operating Voltage
- AVDD: 4.75V to 5.25V, DVDD: 1.8V to 3.6V (digital supply) / AVDD: 5V (analog supply)
- Supply Current
- Normal mode: 7-50mA (AVDD), 2-95μA (DVDD in standby)
- Interface
- SPI
- Resolution
- 24-bit
- Range
- ±2VREF/PGA (full-scale input voltage) V
- Accuracy
- ±0.0010% nonlinearity, ±0.8 ppm/°C gain drift
- Temperature Range
- -40°C to +105°C (operating)
- Package
- SSOP-28
Pinout
22| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | AVDD | POWER | Analog power supply |
| 2 | AGND | GND | Analog ground |
| 3 | VREFN | ADC | Negative reference input |
| 4 | VREFP | ADC | Positive reference input |
| 5 | AINCOM | ADC | Analog input common |
| 6 | AIN0 | ADC | Analog input 0 |
| 7 | AIN1 | ADC | Analog input 1 |
| 8 | SYNC/PDWN | GPIO | Synchronization / power down input (active low) |
| 9 | RESET | GPIO | Reset input (active low) |
| 10 | DVDD | POWER | Digital power supply |
| 11 | DGND | GND | Digital ground |
| 12 | XTAL2 | GPIO | Crystal oscillator connection (leave disconnected if external clock input is applied to XTAL1/CLKIN) |
| 13 | XTAL1/CLKIN | SPI | Crystal oscillator connection / external clock input |
| 14 | CS | SPI | Chip select (active low) |
| 15 | DRDY | GPIO | Data ready output (active low) |
| 16 | DOUT | SPI | Serial data output |
| 17 | DIN | SPI | Serial data input |
| 18 | SCLK | SPI | Serial clock input |
| 19 | D0/CLKOUT | GPIOSPI | Digital I/O 0 / clock output (Schmitt-Trigger) |
| 20 | D1 | GPIO | Digital I/O 1 |
| 21 | D2 | GPIO | Digital I/O 2 |
| 22 | D3 | GPIO | Digital I/O 3 |
Interactive pinout
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ADS1256
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