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ADS7128 8-ch 12-bit ADC
ADS7128
Texas Instrumentsic data converter
The ADS7128 is an 8-channel, 12-bit ADC with I2C interface and GPIOs, designed for use in various applications including mobile robots, refrigerators, and digital multimeters.
In stock
Specifications
8- Operating Voltage
- AVDD: 2.35 V to 5.5 V, DVDD: 1.65 V to 5.5 V
- Supply Current
- IAVDD: I2C high-speed mode (AVDD = 5 V): 155-195 µA, I2C fast mode plus (AVDD = 5 V): 45-75 µA, I2C fast mode (AVDD = 5 V): 29-37 µA, I2C standard mode (AVDD = 5 V): 13-18 µA µA
- Interface
- I2C
- Resolution
- 12 bits
- Range
- 0 to AVDD V
- Accuracy
- ±0.5 LSB INL, ±0.75 LSB DNL
- Temperature Range
- -40°C to +85°C
- Package
- 16-Pin WQFN (3.00 mm × 3.00 mm)
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| AIN0 | AIN0/GPIO0 | GPIO | Channel 0; configurable as either an analog input (default) or a general-purpose input/output |
| AIN1 | AIN1/GPIO1 | GPIO | Channel 1; configurable as either an analog input (default) or a GPIO |
| AIN2 | AIN2/GPIO2 | GPIO | Channel 2; configurable as either an analog input (default) or a GPIO |
| AIN3 | AIN3/GPIO3 | GPIO | Channel 3; configurable as either an analog input (default) or a GPIO |
| AIN4 | AIN4/GPIO4 | GPIO | Channel 4; configurable as either an analog input (default) or a GPIO |
| AIN5 | AIN5/GPIO5 | GPIO | Channel 5; configurable as either an analog input (default) or a GPIO |
| AIN6 | AIN6/GPIO6 | GPIO | Channel 6; configurable as either an analog input (default) or a GPIO |
| AIN7 | AIN7/GPIO7 | GPIO | Channel 7; configurable as either an analog input (default) or a GPIO |
| ADDR | ADDR | GPIO | Input for selecting the device I2C address. |
| ALERT | ALERT | GPIO | Open-drain (default) or push-pull output for the digital comparator |
| AVDD | AVDD | POWER | Analog supply input, also used as the reference voltage to the ADC; connect a 1-µF decoupling capacitor to GND |
| DECAP | DECAP | GND | Connect a 1-µF decoupling capacitor between the DECAP and GND pins for the internal power supply |
| DVDD | DVDD | POWER | Digital I/O supply voltage; connect a 1-µF decoupling capacitor to GND |
| GND | GND | GND | Ground for the power supply; all analog and digital signals are referred to this pin voltage |
| SDA | SDA | I2C | Serial data input or output for the I2C interface |
| SCL | SCL | I2C | Serial clock for the I2C interface |
Interactive pinout
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ADS7128
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