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Microchip Technology MCP47FEB21A1-E/ST
- Part No.:
- MCP47FEB21A1-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MCP47FEB21A1-E/ST.pdf
- Description:
- IC DAC 12BIT V-OUT 8TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP47FEB21A1-E/ST from Microchip Technology is a single-channel, 12-bit buffered voltage-output DAC with nonvolatile EEPROM configuration memory and I²C™ interface. It delivers rail-to-rail output, 6 µs typical settling time, and supports VDD, external VREF, or internal 1.22V bandgap reference with selectable 1x/2x gain - used in precision sensor calibration and motor control feedback loops.
For engineers reviewing the MCP47FEB21A1-E/ST datasheet, MCP47FEB21A1-E/ST pinout, MCP47FEB21A1-E/ST application, or MCP47FEB21A1-E/ST equivalent, key selection criteria include its 12-bit resolution, EEPROM-retained power-on output setting, extended -40°C to +125°C operation, TSSOP-8 package, and support for High-Speed I²C up to 3.4 Mbps.
Technical Context
The MCP47FEB21A1-E/ST implements a resistor ladder architecture with buffered op-amp output stage, enabling rail-to-rail voltage generation across 4096 discrete steps. Its nonvolatile memory stores DAC register value, voltage reference source (VDD/VREF/internal), gain setting (1x/2x), power-down mode, and slave address - all recalled automatically at power-on or brown-out reset.
I²C communication supports Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes with four fixed slave addresses or full 7-bit programmability. The LAT0/HVC pin enables WiperLock™ write protection via high-voltage command sequence, preventing accidental EEPROM writes during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit (4096 steps) - defines smallest analog step size as VFSR/4096 for precise setpoint control |
| Settling Time | 6 µs (typical) - enables fast DAC updates in closed-loop motor or actuator systems |
| Reference Options | VDD, external VREF (buffered/unbuffered), or internal 1.22V bandgap - allows flexible accuracy vs. power trade-offs |
| Output Gain | Selectable 1x or 2x - doubles output range when using external VREF ≤ VDD/2 |
| Supply Range | 2.7V to 5.5V (full spec); 1.8V to 2.7V (reduced analog spec) - supports battery-powered and industrial rails |
| I²C Speed | Up to 3.4 Mbps - enables high-throughput configuration and streaming in real-time control systems |
| Temp Range | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and harsh-environment applications |
Pinout & Package
Package: 8-lead TSSOP (3.0 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT0 | Analog output | Rail-to-rail buffered voltage output driven by DAC0; capable of sourcing/sinking ±20 mA |
| VREF0 | Reference input | Accepts external reference (buffered or unbuffered); selects VDD or internal bandgap when not used |
| NC | No connect | Internally unused; must be left floating or tied to ground per layout guidelines |
| SCL | I²C clock | Input-only clock line; supports up to 3.4 MHz; Schmitt-triggered for noise immunity |
| LAT0/HVC | Latency / HV control | Configurable as latch enable (LAT0) or high-voltage command (HVC) for WiperLock™ EEPROM protection |
| VSS | Ground | Analog/digital common reference; requires low-impedance connection to minimize noise coupling |
| SDA | I²C data | Open-drain bidirectional data line; supports standard/fast/high-speed I²C protocols |
| VDD | Power supply | Single 1.8–5.5V supply powering digital core, analog circuitry, and output buffer |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile EEPROM | Stores DAC output value, reference source, gain, power-down state, and slave address - auto-recalled at POR/BOR without host intervention |
| WiperLock™ Protection | HVC pin enables hardware-level write lock for EEPROM; prevents unintended configuration changes during system runtime |
| Rail-to-Rail Output | Delivers 0 V to VDD – 0.04 V output swing into 5 kΩ load - maximizes dynamic range in single-supply systems |
| Low Power-Down Current | 650 nA typical - reduces standby power in battery-operated instrumentation and portable sensors |
| Internal Bandgap Reference | 1.22 V ± 40 mV with 15 ppm/°C drift - provides stable, temperature-compensated reference without external components |
Applications
| Sensor Calibration | Motor Control Feedback |
|---|---|
Use Scenario: Calibrating offset/gain of analog sensor outputs (e.g., pressure, temperature, current sense) in factory test fixtures or field-deployed modules. IC Role / Device Role / Timing Role: Precision voltage source generating known trim voltages applied to sensor signal conditioning circuitry. Use Value: Eliminates manual potentiometer adjustment; enables automated, repeatable calibration with EEPROM-stored coefficients across production batches. | Use Scenario: Providing programmable reference voltage to PWM comparators or current-loop drivers in BLDC or stepper motor controllers. IC Role / Device Role / Timing Role: Closed-loop setpoint generator updating in real time via I²C to adjust torque or speed targets. Use Value: 6 µs settling enables sub-millisecond response to control commands; 12-bit resolution supports fine-grained velocity profiling. |
| PC Peripheral Voltage Control | Low-Power Portable Instrumentation |
Use Scenario: Regulating bias voltages for USB audio codecs, display gamma correction, or thermal management circuits in desktop/laptop add-in cards. IC Role / Device Role / Timing Role: Digitally programmable voltage source interfaced directly to host microcontroller over I²C. Use Value: Single 3.3V or 5V supply simplifies BOM; TSSOP-8 footprint minimizes PCB area; no external reference required. | Use Scenario: Generating excitation voltages for resistive bridge sensors (e.g., strain gauges, RTDs) in handheld multimeters or environmental monitors. IC Role / Device Role / Timing Role: Low-quiescent-current analog output stage powered from coin-cell or Li-ion battery. Use Value: 180 µA normal operation and 650 nA power-down current extend battery life; internal bandgap eliminates external reference component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP47FEB22A1-E/ST | Dual-channel 12-bit DAC in same TSSOP-8 package; shares identical specs except adds second independent VOUT1 output | Required where two synchronized analog outputs are needed (e.g., differential signaling, dual-sensor biasing) | Select when channel count > 1 is mandatory; otherwise MCP47FEB21A1-E/ST offers lower cost and simpler routing |
| AD5689RBRUZ-RL7 | 16-bit dual-channel DAC with internal 2.5V reference, SPI interface, and higher INL (±4 LSB); consumes ~350 µA active current | Better resolution and integrated reference suit metrology-grade applications; SPI limits compatibility with I²C-only hosts | Choose for higher precision where SPI is acceptable and 16-bit resolution justifies added cost and power |
Compared with MCP47FEB22A1-E/ST, the MCP47FEB21A1-E/ST saves board space and cost in single-output systems; versus AD5689RBRUZ-RL7, it trades resolution for I²C compatibility, lower power, and EEPROM-based zero-power configuration retention.
Availability
MCP47FEB21A1-E/ST is available at Aetrix Electronics and suitable for sensor calibration, motor control feedback, and low-power portable instrumentation requiring stable component supply across automotive, industrial, and medical device programs.
Supply support for MCP47FEB21A1-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 microcontrollers, analog devices, FPGAs, and connectivity solutions, headquartered in Chandler, Arizona.
The MCP47FEBXX family was designed for embedded systems requiring nonvolatile, pin-configurable DACs with robust I²C control and extended temperature operation - targeting industrial automation, automotive subsystems, and portable test equipment.
FAQ
What is the maximum I²C clock frequency supported by the MCP47FEB21A1-E/ST?
The MCP47FEB21A1-E/ST supports High-Speed I²C mode up to 3.4 Mbps, in addition to Standard (100 kHz) and Fast (400 kHz) modes. This allows rapid configuration and streaming updates in time-critical control applications. The SCL and SDA pins feature Schmitt-trigger inputs and 10 pF pin capacitance to ensure signal integrity at these speeds. The MCP47FEB21A1-E/ST maintains full functionality across its entire operating temperature range (-40°C to +125°C) at all supported I²C speeds.
Does the MCP47FEB21A1-E/ST require an external reference voltage?
No, the MCP47FEB21A1-E/ST does not require an external reference voltage. It offers three reference options: the device's VDD supply, an external voltage applied to the VREF0 pin (buffered or unbuffered), or the internal 1.22V bandgap reference. When using the internal bandgap, the output gain is fixed at 2x, yielding a nominal full-scale output of 2.44V. This eliminates BOM cost and board space for external references in many applications.
How does the nonvolatile memory in the MCP47FEB21A1-E/ST function at power-up?
At power-on or brown-out reset, the MCP47FEB21A1-E/ST automatically recalls its stored DAC output value, voltage reference source (VDD/VREF/internal), gain setting (1x/2x), power-down state, and I²C slave address from EEPROM. This Auto Recall feature ensures deterministic analog output behavior without host MCU initialization - critical for fail-safe operation in industrial and automotive systems. The EEPROM endurance is rated for 1 million write cycles with 200-year data retention at +25°C.
What is the purpose of the LAT0/HVC pin on the MCP47FEB21A1-E/ST?
The LAT0/HVC pin on the MCP47FEB21A1-E/ST serves a dual function: as LAT0 (latch enable) for synchronous update of the DAC output, or as HVC (high-voltage command) input for WiperLock™ EEPROM protection. When configured as HVC, applying ≥9.0V to this pin enables hardware-level write locking of the nonvolatile memory, preventing accidental or malicious reprogramming during normal system operation - a key safety feature for certified industrial and automotive designs.
What are the power-down capabilities of the MCP47FEB21A1-E/ST?
The MCP47FEB21A1-E/ST offers configurable power-down modes that disconnect the output buffer (placing VOUT0 in high-impedance state) and optionally enable internal pull-down resistors (100 kΩ or 1 kΩ) to ground. In PDxB:PDxA = '01' mode, quiescent current drops to 650 nA typical - ideal for battery-powered sleep states. The power-down configuration is stored in EEPROM and restored automatically at power-up, ensuring consistent low-power behavior across power cycles.
MCP47FEB21A1-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 1
- Settling Time:
- 6µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- I2C
- Reference Type:
- External, Internal, Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- INL/DNL (LSB):
- ±1.5, ±0.2
- Architecture:
- R-2R
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP47FEB21A1-E/ST FAQ
1.How can I place an order for MCP47FEB21A1-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP47FEB21A1-E/ST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP47FEB21A1-E/ST reliable?
The price and inventory of MCP47FEB21A1-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP47FEB21A1-E/ST is usually 5 days.
3.What payment methods are accepted for MCP47FEB21A1-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP47FEB21A1-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP47FEB21A1-E/ST?
MCP47FEB21A1-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP47FEB21A1-E/ST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP47FEB21A1-E/ST?
For technical support, including MCP47FEB21A1-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP47FEB21A1-E/ST requirements.
6.How does Aetrix verify that MCP47FEB21A1-E/ST is sourced from the original manufacturer or authorized distributors?
All MCP47FEB21A1-E/ST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP47FEB21A1-E/ST meets industry standards.
7.What is the process for return or replacement of MCP47FEB21A1-E/ST?
All MCP47FEB21A1-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with MCP47FEB21A1-E/ST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP47FEB21A1-E/ST part is unused and in its original packaging.
Return procedure for MCP47FEB21A1-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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