Microchip Technology MCP47FVB11A3-E/ST

Overview

MCP47FVB11A3-E/ST from Microchip Technology is a single-channel, 10-bit buffered voltage-output DAC with I²C interface, rail-to-rail output, 6 µs typical settling time, and selectable reference sources (VDD, external VREF, or internal 1.22 V bandgap). It operates from 2.7V to 5.5V and supports high-speed I²C up to 3.4 Mbps, targeting precision sensor calibration and low-power instrumentation.

For engineers reviewing the MCP47FVB11A3-E/ST datasheet, MCP47FVB11A3-E/ST pinout, MCP47FVB11A3-E/ST application, or MCP47FVB11A3-E/ST equivalent, key selection criteria include its 10-bit resolution, dual gain options (1x/2x), power-down modes with 650 nA typical current, extended temperature range (–40°C to +125°C), and TSSOP-8 package compatibility with space-constrained industrial designs.

Technical Context

The MCP47FVB11A3-E/ST implements a resistor ladder DAC architecture with an integrated rail-to-rail output amplifier and programmable gain control. Its I²C interface supports Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes, including high-voltage command compatibility for WiperLock™ functionality.

Reference selection is controlled via VRxB:VRxA bits: '00' selects internal bandgap (1.22 V), '01' enables external buffered VREF, '10' enables external unbuffered VREF (with optional 2x gain), and '11' selects VDD as reference. Power-down states configure output impedance and pull-down resistors (1 kΩ or 100 kΩ).

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (3.0 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP47FEB11A3-E/ST and AD5621BRMZ-REEL7, the MCP47FVB11A3-E/ST uniquely balances I²C flexibility, 10-bit precision, ultra-low power-down current, and three reference options - making it optimal for cost-sensitive, battery-aware, and bus-constrained embedded systems requiring recalibration on startup.

Availability

MCP47FVB11A3-E/ST is available at Aetrix Electronics and suitable for sensor calibration, portable instrumentation, and motor control applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MCP47FVB11A3-E/ST 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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets.

The MCP47FVBXX family is designed for precision, low-power, I²C-compatible digital-to-analog conversion in space- and energy-constrained embedded systems - emphasizing configurability, extended temperature operation, and robust serial interface performance.

FAQ

What is the maximum I²C clock frequency supported by the MCP47FVB11A3-E/ST?

The MCP47FVB11A3-E/ST supports I²C Standard Mode (100 kHz), Fast Mode (400 kHz), and High-Speed Mode up to 3.4 MHz. This allows rapid DAC register updates in time-critical applications such as closed-loop control, while maintaining compatibility with legacy microcontrollers operating at lower speeds. The device's internal timing meets JEDEC HS-mode specifications when used with appropriate pull-up resistors and bus capacitance.

Does the MCP47FVB11A3-E/ST include an internal voltage reference?

Yes, the MCP47FVB11A3-E/ST integrates a precision internal bandgap reference of 1.22 V (typical), with ±15 ppm/°C temperature coefficient. This reference can be selected via configuration bits and provides a stable, supply-independent voltage source for the DAC core - eliminating the need for external references in cost-sensitive or board-space-constrained designs where 1.22 V full-scale output is acceptable.

What are the power-down options available on the MCP47FVB11A3-E/ST?

The MCP47FVB11A3-E/ST offers three power-down configurations via PD1:PD0 bits: high-impedance output disconnect, 100 kΩ pull-down to VSS, or 1 kΩ pull-down to VSS. In all cases, quiescent current drops to 650 nA typical. This enables aggressive power gating in battery-operated systems - for example, disabling the DAC output between sensor readings while preserving register contents for instant wake-up.

Can the MCP47FVB11A3-E/ST generate output voltages beyond its VDD supply?

No, the MCP47FVB11A3-E/ST cannot generate output voltages exceeding VDD. Its rail-to-rail output amplifier delivers from 0.01 V to VDD – 0.04 V under load. When using external VREF with 2x gain, VREF must be ≤ VDD/2 to prevent clipping - e.g., a 2.5 V VREF requires ≥ 5.0 V VDD. Attempting to exceed VDD risks output saturation and degraded linearity, as confirmed by the device's absolute maximum ratings and electrical characteristics tables.

How does the MCP47FVB11A3-E/ST handle major code transitions to minimize glitch energy?

The MCP47FVB11A3-E/ST limits major code transition glitch energy to 45 nV·s (typical), measured during transitions like 7FFh ↔ 800h in 10-bit mode. This is achieved through synchronized switching of the resistor ladder segments and output amplifier compensation. Low glitch energy prevents transient errors in sensitive analog circuits - such as integrators or filter inputs - ensuring signal integrity during dynamic DAC updates in data acquisition or waveform synthesis.