Microchip Technology MCP48FEB11-E/UN

Overview

MCP48FEB11-E/UN from Microchip Technology is a single-channel, 10-bit buffered voltage-output DAC with nonvolatile EEPROM configuration memory, SPI interface, rail-to-rail output, and selectable reference sources (VDD, external VREF, or internal 1.22 V bandgap). It delivers 7.8 µs typical settling time and supports 1x/2x output gain, operating from 2.7V to 5.5V across –40°C to +125°C for precision sensor calibration and setpoint trimming.

For engineers reviewing the MCP48FEB11-E/UN datasheet, MCP48FEB11-E/UN pinout, MCP48FEB11-E/UN application, or MCP48FEB11-E/UN equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply support for industrial embedded and instrumentation designs.

Technical Context

The MCP48FEB11-E/UN implements a resistor ladder DAC architecture with an integrated rail-to-rail output op amp, configurable gain (1x or 2x), and nonvolatile register storage for POR/BOR output value, reference selection, gain setting, and power-down mode. Its SPI interface operates up to 20 MHz write and 10 MHz read speeds with Schmitt-triggered inputs for noise immunity.

Reference selection is controlled via VRxB:VRxA bits: '00' selects VDD, '01' selects internal bandgap (1.22 V), and '10' enables external unbuffered VREF (with VREF ≤ VDD). When internal bandgap is selected and G bit = '1', total gain becomes 4×. Power-down disconnects the output buffer and enables optional 1 kΩ or 100 kΩ pull-down resistors.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (3.0 mm × 3.0 mm, 0.5 mm pitch), thermally enhanced for stable operation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DAC applications.

Compared with MCP48FEB12-E/UN and MCP47FEB11-E/UN, the MCP48FEB11-E/UN uniquely balances SPI speed (20 MHz), VREF flexibility (buffered/unbuffered + internal bandgap), and 2x gain - making it optimal for high-throughput, multi-reference industrial calibration systems where single-channel suffices.

Availability

MCP48FEB11-E/UN is available at Aetrix Electronics and suitable for sensor calibration, set point trimming, and low-power portable instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for MCP48FEB11-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, headquartered in Chandler, Arizona, with global design and manufacturing infrastructure.

The MCP48FEBXX family is designed for precision analog output in resource-constrained embedded systems, emphasizing nonvolatile configurability, wide temperature operation, and robust digital interface compliance for industrial and automotive applications.

FAQ

What is the maximum SPI clock frequency supported by the MCP48FEB11-E/UN?

The MCP48FEB11-E/UN supports SPI write operations up to 20 MHz and read operations up to 10 MHz. This high-speed interface allows rapid DAC updates in real-time control loops. The device uses SPI Modes 0 and 3, with data sampled on the rising edge of SCK. Timing margins remain compliant across the full –40°C to +125°C temperature range and 2.7V–5.5V supply.

Does the MCP48FEB11-E/UN support internal voltage reference operation?

Yes, the MCP48FEB11-E/UN integrates a factory-trimmed 1.22 V ±0.04 V bandgap reference (VBG) that can be selected as the DAC reference source via configuration bits. When enabled, this reference provides stable, supply-independent operation - ideal for portable systems where VDD may vary. Its 15 ppm/°C tempco ensures minimal drift over temperature.

How does the power-down mode function on the MCP48FEB11-E/UN?

The MCP48FEB11-E/UN offers three power-down configurations via PD1:PD0 bits: high-impedance output disconnect, plus optional 1 kΩ or 100 kΩ pull-down resistors to VSS. In the lowest-power state (PD1:PD0 = '01'), supply current drops to 0.65 µA typical. All configuration and DAC register values are retained in volatile memory during power-down.

Can the MCP48FEB11-E/UN generate a 0–5 V output using a 5 V supply?

Yes - the MCP48FEB11-E/UN delivers true rail-to-rail output, achieving 0.01 V minimum and VDD – 0.04 V maximum. With VDD = 5.0 V and VREF = VDD, full-scale output is 4.96 V. For exact 0–5 V, use VREF = 5.04 V externally (within VDD limit) or apply external gain; internal 2x gain with 2.5 V reference also yields 0–5 V.

What is the purpose of the LAT0/HVC pin on the MCP48FEB11-E/UN?

The LAT0/HVC pin serves two distinct roles: as LAT0, it synchronizes DAC register updates to an external strobe for glitch-free multi-DAC systems; as HVC, it accepts 12.5 V to enable WiperLock™ technology - preventing unintended EEPROM writes and ensuring configuration integrity in noisy or firmware-updating environments. Both functions are mutually exclusive and mode-selected internally.