Overview
The MCP4922-E/SLVAO is a dual-channel, 12-bit Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. This device is known for its high accuracy, low noise performance, and low power consumption. It features an SPI-compatible Serial Peripheral Interface and operates within a supply voltage range of 2.7V to 5.5V. The MCP4922 is available in various packages, including SOIC, PDIP, and TSSOP, making it versatile for different application needs.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Differential Non-Linearity (DNL) | ±0.2 LSB (typ) |
| Integral Non-Linearity (INL) | ±2 LSB (typ) |
| Supply Voltage | 2.7V to 5.5V |
| Output Type | Rail-to-Rail |
| Clock Frequency | Up to 20 MHz |
| Settling Time | 4.5 µs |
| Gain Selection | Unity or 2x |
| Operating Temperature | -40°C to +125°C |
| Package Types | SOIC, PDIP, TSSOP |
Key Features
- Rail-to-Rail Output
- SPI Interface with up to 20 MHz Clock Support
- Simultaneous Latching of the Dual DACs with LDAC pin
- Fast Settling Time of 4.5 µs
- Selectable Unity or 2x Gain Output
- External Voltage Reference Inputs
- External Multiplier Mode
- 2.7V to 5.5V Single-Supply Operation
- Extended Temperature Range: -40°C to +125°C
- Shutdown Pin for Individual or Both DAC Channels
- Power-on Reset (POR) Circuit
Applications
- Set Point or Offset Trimming
- Precision Selectable Voltage Reference
- Motor Control Feedback Loop
- Digitally Controlled Multiplier/Divider
- Calibration of Optical Communication Devices
Q & A
- What is the resolution of the MCP4922 DAC?
The MCP4922 has a 12-bit resolution. - What is the typical differential non-linearity (DNL) of the MCP4922?
The typical DNL is ±0.2 LSB. - What is the operating voltage range of the MCP4922?
The MCP4922 operates within a supply voltage range of 2.7V to 5.5V. - How many channels does the MCP4922 have?
The MCP4922 is a dual-channel DAC. - What is the maximum clock frequency supported by the MCP4922's SPI interface?
The SPI interface supports up to 20 MHz clock frequency. - How can I shut down the DAC channels on the MCP4922?
You can shut down both DAC channels or individual channels using the shutdown pin. - What is the settling time of the MCP4922?
The settling time is 4.5 µs. - Can I configure the gain of the MCP4922 output?
Yes, you can select either unity or 2x gain output. - What are the package options available for the MCP4922?
The MCP4922 is available in SOIC, PDIP, and TSSOP packages. - Why is my MCP4922 not providing any output?
Ensure that the power supply voltages are within the specified range, and check the connections to the VSS, VDD, and reference voltages. Also, verify that the correct data is being sent over SPI.
