ADS7828E/2K5 12-Bit 8-Channel ADC with Internal Reference (I2C, TSSOP-16)

Does your Raspberry Pi lack analog inputs, or has your ESP32 run out of ADC pins for your custom project? The ADS7828E is the perfect solution. This highly capable 12-bit Analog-to-Digital Converter expands your microcontroller's capabilities by adding 8 independent analog channels, all communicating over a simple 2-wire I2C interface. It is an absolute powerhouse for building custom Battery Management Systems (BMS), weather stations, or drone Power Distribution Boards (PDBs) where you need to monitor multiple voltage rails and current shunts simultaneously.

A massive advantage of the ADS7828 is its built-in 2.5V internal voltage reference. Unlike cheaper ADCs that rely on the main VCC line for a reference (which can fluctuate and ruin readings), this chip provides rock-solid, highly accurate measurements regardless of power supply noise. It can sample at up to 50 kHz and features an ultra-low power mode that shuts down the device when not in use. Housed in a standard TSSOP-16 package, it is a versatile, high-precision upgrade for any sensor-heavy DIY electronics project.

Key Features:

• 8 Multiplexed Channels: Read up to 8 single-ended analog inputs or configure them as 4 differential inputs for specialized sensor readings.

• Built-In 2.5V Reference: Ensures highly stable and precise measurements without needing an external precision voltage regulator.

• Easy I2C Interface: Communicates using just two pins (SDA/SCL) and supports configurable I2C addresses, allowing multiple ADS7828 chips on the same bus.

• Low Power Consumption: Features automatic power-down after every conversion, making it highly efficient for battery-operated drones and IoT sensors.

Specifications:

• Part Number: ADS7828E/2K5

• IC Type: Analog-to-Digital Converter (ADC)

• Resolution: 12-Bit

• Channels: 8 Single-Ended / 4 Differential

• Sampling Rate: 50 ksps

• Interface: I2C

• Package Type: TSSOP-16 (SMD/SMT)