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ADS1220 24-bit ADC
ADS1220
Texas Instrumentsic data converter
The ADS1220 is a 4-channel, low-power, 24-bit ADC with programmable gain and data rates up to 2kSPS.
In stock
Specifications
8- Operating Voltage
- 2.3V to 5.5V
- Supply Current
- As low as 120μA (typ) in duty-cycle mode (typ)
- Interface
- SPI-compatible interface (mode 1)
- Resolution
- 24 bits
- Range
- -VREF / Gain to VREF / Gain (V)
- Accuracy
- ±6 ppmFSR (INL) at 25°C, ±0.1% (gain error) at 25°C
- Temperature Range
- -40°C to +125°C
- Package
- VQFN-16 or TSSOP-16
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| AIN0/REFP1 | Analog input 0, positive reference input 1 | GPIO | |
| AIN1 | Analog input 1 | GPIO | |
| AIN2 | Analog input 2 | GPIO | |
| AIN3/REFN1 | Analog input 3, negative reference input 1. Internal low-side power switch connected between AIN3/REFN1 and AVSS. | GPIO | |
| AVDD | Positive analog power supply | POWER | Connect a 100nF (or larger) capacitor to AVSS. |
| AVSS | Negative analog power supply | GND | |
| CLK | External clock source pin | GPIO | Connect to DGND if not used. |
| CS | Chip select; active low | GPIO | Connect to DGND if not used. |
| DGND | Digital supply ground | GND | |
| DIN | Serial data input | GPIO | |
| DOUT/DRDY | Serial data output combined with data ready; active low | GPIO | |
| DRDY | Data ready, active low. Leave unconnected or tie to DVDD using a weak pull-up resistor if not used. | GPIO | |
| DVDD | Positive digital power supply | POWER | Connect a 100nF (or larger) capacitor to DGND. |
| REFN0 | Negative reference input 0 | GPIO | |
| REFP0 | Positive reference input 0 | GPIO | |
| SCLK | Serial clock input | SPI |
Interactive pinout
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ADS1220
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