Overview
The MCP4728-E/UN is a quad-channel, 12-bit voltage output Digital-to-Analog Converter (DAC) produced by Microchip Technology. This device features nonvolatile memory (EEPROM) and an I2C compatible serial interface. The onboard precision output amplifier enables the DAC to achieve rail-to-rail analog output swing, making it versatile for various applications. The user can program the DAC input codes, device configuration bits, and I2C address bits to the non-volatile memory using I2C interface commands.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Number of Channels | Quad (4 channels) |
| Output Type | Voltage Output |
| Output Voltage Range (Internal VREF) | 0.000V to 2.048V (Gain Setting = 1), 0.000V to 4.096V (Gain Setting = 2) |
| Output Voltage Range (External VREF) | 0.000V to VDD |
| Differential Nonlinearity (DNL) | ±0.2 LSB (typical) |
| Settling Time | 6 µs (typical) |
| Supply Voltage | 2.7V to 5.5V |
| Interface | I2C (100 kbps, 400 kbps, and High Speed 3.4 Mbps) |
| Package | 10-Lead MSOP |
| Operating Temperature | -40°C to +125°C |
Key Features
- 12-Bit Voltage Output DAC with Four Buffered Outputs
- On-Board Nonvolatile Memory (EEPROM) for DAC Codes and I2C Address Bits
- Internal or External Voltage Reference Selection
- Fast Settling Time: 6 µs (typical)
- Normal or Power-Down Mode
- Low Power Consumption
- Single-Supply Operation: 2.7V to 5.5V
- I2C Interface with User Programmable Address Bits
- Extended Temperature Range: -40°C to +125°C
Applications
- Set Point or Offset Adjustment
- Sensor Calibration
- Closed-Loop Servo Control
- Low Power Portable Instrumentation
- PC Peripherals
- Programmable Voltage and Current Source
- Industrial Process Control
- Instrumentation
- Bias Voltage Adjustment for Power Amplifiers
Q & A
- What is the resolution of the MCP4728 DAC?
The MCP4728 is a 12-bit DAC. - How many channels does the MCP4728 have?
The MCP4728 is a quad-channel DAC, meaning it has four channels. - What is the output voltage range of the MCP4728 using the internal VREF?
The output voltage range is 0.000V to 2.048V with Gain Setting = 1 and 0.000V to 4.096V with Gain Setting = 2. - Can the MCP4728 use an external voltage reference?
Yes, the MCP4728 can use an external voltage reference (VDD), allowing the output voltage range to be 0.000V to VDD. - What is the typical differential nonlinearity (DNL) of the MCP4728?
The typical DNL is ±0.2 LSB. - What is the settling time of the MCP4728?
The typical settling time is 6 µs. - What is the supply voltage range for the MCP4728?
The supply voltage range is 2.7V to 5.5V. - What interface does the MCP4728 use?
The MCP4728 uses an I2C interface with speeds of 100 kbps, 400 kbps, and High Speed 3.4 Mbps. - What is the package type of the MCP4728?
The MCP4728 comes in a 10-Lead MSOP package. - What is the operating temperature range of the MCP4728?
The operating temperature range is -40°C to +125°C.
