Microchip Technology MCP48CMD02-E/UN

Overview

MCP48CMD02-E/UN from Microchip Technology is a dual-channel, 8-bit buffered voltage-output DAC with nonvolatile (MTP) memory, SPI interface, and ±0.1 LSb integral nonlinearity. It operates from 2.7V to 5.5V, supports internal bandgap (1.214 V), external VREF, or VDD as reference, and delivers 4 µs settling time. It is used in sensor calibration circuits where power-up output reproducibility and field-programmable trim values are required.

For engineers reviewing the MCP48CMD02-E/UN datasheet, MCP48CMD02-E/UN pinout, MCP48CMD02-E/UN application, or MCP48CMD02-E/UN equivalent, key selection criteria include dual-channel 8-bit resolution with MTP storage, 10-lead MSOP package compatibility, SPI write speed up to 50 MHz, and support for 1×/2× output gain with external reference.

Technical Context

The MCP48CMD02-E/UN implements a resistor ladder architecture with two independent 256-step DAC cores, each featuring a rail-to-rail output buffer and programmable power-down modes (100 kΩ or 1 kΩ pull-down). Its SPI interface supports both '00' and '11' clock polarity/phase modes and includes dedicated LAT/HVC pin for MTP programming at 7.5 V.

Nonvolatile memory comprises 32 write cycles per location across 8 general-purpose MTP registers, retaining power-up output values and configuration settings. Reference selection (VDD, external VREF, or internal 1.214 V bandgap) directly determines output range and gain options-2× gain is only available when VDD is not selected as reference.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel 8-bit DAC applications.

Compared with MCP48FVD02-E/MS, the MCP48CMD02-E/UN adds field-programmable MTP for autonomous power-up behavior; compared with AD5662BRMZ-REEL7, it offers integrated dual outputs and reference options at lower resolution but higher system-level integration.

Availability

MCP48CMD02-E/UN is available at Aetrix Electronics and suitable for industrial sensor calibration, PC peripheral trim, and portable instrumentation requiring stable component supply, long-term MTP data retention, and guaranteed -40°C to +125°C operation.

Supply support for MCP48CMD02-E/UN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a leading provider of microcontrollers, analog devices, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets.

The MCP48CXDX family delivers precision, low-power, and nonvolatile-configurable DACs optimized for embedded calibration, sensor signal conditioning, and closed-loop control in space-constrained applications.

FAQ

What is the maximum SPI clock frequency supported by the MCP48CMD02-E/UN?

The MCP48CMD02-E/UN supports SPI write operations up to 50 MHz and read operations up to 25 MHz. This high-speed interface allows rapid calibration data loading in automated test environments. The device complies with standard SPI '00' and '11' modes, ensuring compatibility with most microcontrollers and FPGAs without custom timing logic. Performance remains stable across the full -40°C to +125°C temperature range.

Does the MCP48CMD02-E/UN require an external high-voltage supply for MTP programming?

Yes, the MCP48CMD02-E/UN requires a 7.5 V (±0.25 V) high-voltage signal applied to the LAT/HVC pin to program its MTP memory. This voltage is not derived from VDD and must be supplied externally during calibration or field update procedures. The device draws up to 6.4 mA during MTP write cycles, and the high-voltage pulse must be limited in duration per Microchip's programming guidelines to avoid latch-up or degradation.

Can both DAC outputs operate simultaneously with independent codes?

Yes, the MCP48CMD02-E/UN supports independent code loading to DAC0 and DAC1 via its 24-bit SPI command structure. Each channel has its own register and output buffer, allowing simultaneous, asynchronous updates. The LAT/HVC pin can be used in latch mode to synchronize output updates across both channels, ensuring glitch-free transitions in timing-critical applications such as waveform generation or multi-sensor biasing.

What is the output impedance of the MCP48CMD02-E/UN in power-down mode?

In power-down mode, the MCP48CMD02-E/UN disconnects its output buffers and configures either a 100 kΩ or 1 kΩ pull-down resistor to VSS on each VOUT pin, depending on the PD1:PD0 register setting. This controlled high-impedance state prevents floating nodes while limiting leakage current-critical for battery-powered systems and multiplexed analog backplanes where output contention must be avoided.

How does the internal 1.214 V bandgap reference affect full-scale output range?

When the internal bandgap (1.214 V typical) is selected as the reference source, the MCP48CMD02-E/UN's full-scale output is fixed at 1.214 V in 1× gain mode or 2.428 V in 2× gain mode. This eliminates dependency on VDD stability and enables accurate, supply-independent analog outputs-ideal for precision sensor excitation or reference generation where VDD may vary or contain switching noise.