MCP4921-E/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip MCP4921-E/P is a 12-bit single-channel serial DAC with SPI interface, 4.096 V maximum analog output, binary input coding, and an 8-pin PDIP package suitable for breadboard prototyping.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4921-E/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0500(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP4921-E/P?
- 12-bit resolution delivers 4096 discrete output levels for fine-grained analog voltage control up to 4.096 V
- SPI-compatible serial input interface (binary coded) simplifies connection to any microcontroller with minimal I/O pins
- 8-pin PDIP package enables direct breadboard and through-hole PCB prototyping without SMD soldering equipment
- Single-supply operation with straightforward external reference input for flexible system voltage compatibility
- Fast settling time supports real-time analog waveform generation and control loop feedback in embedded systems
What is MCP4921-E/P used for?
The MCP4921-E/P is widely used in microcontroller-based systems requiring precise analog output, such as programmable power supplies, audio signal generators, and sensor calibration rigs. Its SPI interface enables direct connection to PIC, AVR, and ARM microcontrollers with just 3 digital I/O lines. Prototyping platforms benefit from the through-hole PDIP package, while production designs can migrate to the SOT-23 variant for compact surface-mount layouts.
What are the specifications of MCP4921-E/P?
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Analog Output Voltage-Max | 4.096V |
| Converter Type | D/A CONVERTER |
| Input Bit Code | BINARY |
| Input Format | SERIAL |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Linearity Error-Max (EL) | 0.2929% |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Settling Time-Nom (tstl) | 4.5 µs |
| Supply Current-Max | 0.35mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP4921-E/P datasheet?
MCP4921-E/P Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4921-E/P?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resolution and output voltage range does the MCP4921-E/P provide?
The MCP4921-E/P is a 12-bit DAC providing 4096 output codes with a maximum analog output voltage of 4.096 V when the external reference is set accordingly. This gives a theoretical LSB step size of approximately 1 mV per step, making it precise enough for sensor calibration, audio output, and closed-loop control applications in embedded systems.
How does the MCP4921-E/P interface with a microcontroller, and which protocol does it use?
The MCP4921-E/P uses a 3-wire SPI-compatible serial interface with binary input coding, requiring only SCLK, SDI (MOSI), and CS lines from the host microcontroller. This low pin-count interface is compatible with PIC, AVR, STM32, and most other MCU families, and supports clock rates suitable for real-time control at update rates exceeding 1 Msps in typical configurations.
Why would a designer choose the PDIP-8 package of the MCP4921-E/P over a surface-mount alternative?
The 8-pin PDIP package has 2.54 mm (100 mil) pin pitch, which is directly compatible with standard breadboards and through-hole PCBs, making it ideal for rapid prototyping, lab experiments, and educational projects. Engineers who need the same 12-bit DAC function in a compact production board can migrate to the MCP4921 in SOIC-8 or SOT-23-8 packages without changing firmware.
In which embedded control or signal generation scenarios is the MCP4921-E/P a practical choice?
The MCP4921-E/P suits programmable analog output applications including motor speed setpoint generation, DC bias control for RF circuits, and digitally controlled power supply reference adjustment. Its 12-bit resolution and up to 4.096 V output span make it accurate enough for closed-loop PID controllers, arbitrary waveform generators, and instrumentation calibration fixtures driven by a microcontroller over SPI.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.8700 | $2.87 |
| 2+ | $2.5200 | $5.04 |
| 10+ | $2.3800 | $23.80 |
| 25+ | $2.2800 | $57.00 |
| 100+ | $2.1300 | $213.00 |
| 1000+ | $2.0500 | $2050.00 |
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