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Product Detailed Parameters
- Description：IC DAC 12BIT 16QFN
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Number of Bits：12
- Number of D/A Converters：2
- Settling Time：16µs
- Output Type：-
- Differential Output：No
- Data Interface：I2C
- Reference Type：External, Internal
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：±1, ±1
- Architecture：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：16-VFQFN Exposed Pad
- Supplier Device Package：16-QFN (3x3)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The MCP48CMB22-E/MG is a dual-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) memory and an SPI serial interface. It operates on a single supply voltage ranging from 2.7V to 5.5V, with reduced specifications for the 1.8V to 2.7V range. The device provides rail-to-rail outputs with a typical settling time of 16 µs and supports write speeds up to 50 MHz. It includes internal bandgap reference options, selectable gain settings, and power-down modes.
Feature Summary
- Integrated MTP memory allows user-programmable storage of DAC settings and configuration data.
- Dual-channel architecture with independent control over each DAC output buffer.
- Flexible reference input options including device VDD, external VREF pin, or internal bandgap.
- SPI interface supporting high-speed operations with configurable clock polarity and phase.
Applications
- Set point or offset trimming in industrial systems
- Sensor calibration circuits
- Low-power portable instrumentation
- PC peripherals requiring analog signal generation
Procurement Notes
Verify the specific package marking and orientation requirements for the MSOP-10 variant during assembly. Confirm that the programming voltage requirements for the MTP memory are supported by the host system's I/O capabilities before finalizing the design.
Selection Notes
Select this component when non-volatile storage of DAC states is required without external EEPROM. Ensure the application can provide the necessary high-voltage level on the LAT/HVC pin if MTP programming is needed. Compare against volatile variants if power consumption during standby is critical.
Part Context
This part belongs to the MCP48CXBXX family, which offers single and dual-channel DACs in 8, 10, and 12-bit resolutions. The 'M' suffix indicates the use of MTP memory instead of volatile RAM found in the CVB series. The 'MG' suffix denotes the specific MSOP-10 package type used for this dual-channel configuration.
Replacement Considerations
MCP48CMB22-E/ML
FAQ
What is the maximum number of write cycles allowed for the MTP memory?
The MTP memory can be written up to 32 times per location. After 32 writes, subsequent commands are ignored to preserve the stored data.
How is the MTP memory programmed?
Programming requires applying a high-voltage level (typically 7.5V) to the LAT/HVC pin while sending specific commands via the SPI interface.
Can the device operate with an external reference voltage?
Yes, the VREF pin can accept an external voltage source. When using an external reference, the user can select between unity (1x) or double (2x) gain.
