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Microchip Technology MCP4726A3T-E/MAY
- Part No.:
- MCP4726A3T-E/MAY
- Manufacturer:
- Microchip Technology
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
MCP4726A3T-E/MAY.pdf
- Description:
- IC DAC 12BIT V-OUT 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,843
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Product details
Overview
MCP4726A3T-E/MAY from Microchip Technology is a 12-bit buffered voltage-output DAC with nonvolatile EEPROM, I²C interface, rail-to-rail output, 6 µs settling time, and dual reference options (VDD or external VREF). It operates from 2.7V to 5.5V and supports high-speed I²C up to 3.4 Mbps, enabling precise analog biasing in sensor calibration and portable instrumentation.
For engineers reviewing the MCP4726A3T-E/MAY datasheet, MCP4726A3T-E/MAY pinout, MCP4726A3T-E/MAY application, or MCP4726A3T-E/MAY equivalent, key selection criteria include its 12-bit resolution with ±2.05 LSb zero-scale error, EEPROM auto-recall on power-up, programmable power-down modes (60 nA), and compatibility with SOT-23-6 and DFN-6 packages for space-constrained designs.
Technical Context
The MCP4726A3T-E/MAY integrates a resistor-ladder DAC core, rail-to-rail output buffer with selectable 1x/2x gain (when VREF is used), and I²C-compatible serial interface supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes. Its internal logic latches EEPROM-stored DAC register and configuration bits-including voltage reference source, gain setting, and power-down state-on Power-on Reset.
It features three programmable power-down outputs (640 kΩ, 125 kΩ, or 1 kΩ pull-down) and supports external reference input with 210 kΩ input impedance in unbuffered mode. The device maintains full functionality across –40°C to +125°C and meets ≥6 kV HBM ESD rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels for fine-grained analog control |
| Settling Time | 6 µs typical - enables rapid updates in closed-loop feedback or dynamic trimming applications |
| Reference Options | VDD or external VREF pin - allows flexible accuracy vs. headroom trade-offs; 2x gain only with VREF |
| Power-Down Current | 60 nA typical (PD1:PD0 = 11) - minimizes system standby power in battery-powered devices |
| I²C Speed Support | Up to 3.4 Mbps - supports high-throughput configuration in multi-DAC systems |
| Operating Voltage | 2.7V to 5.5V - compatible with single-supply industrial and portable logic domains |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive, motor control, and industrial environments |
Pinout & Package
Package: 6-pin SOT-23 (MCP4726A3T-E/MAY is specified in SOT-23-6 per DS22272C, page 2 and package marking "A3T" aligns with SOT-23 variant).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Analog output terminal | Rail-to-rail buffered voltage output; sinks/supplies up to ±40 mA |
| 2 (SCL) | I²C clock input | Accepts standard/fast/high-speed clock; VIH ≥ 0.7VDD, VIL ≤ 0.3VDD |
| 3 (SDA) | I²C bidirectional data line | Open-drain with internal pull-up; supports ACK/NACK and repeated start |
| 4 (VSS) | Ground reference | System ground return for analog and digital sections; decoupling required |
| 5 (VDD) | Positive supply | 2.7V–5.5V main supply; powers DAC core, EEPROM, and I²C interface |
| 6 (VREF) | External reference input | Optional precision reference source; enables 2x gain when selected (max VREF = VDD/2) |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile EEPROM storage | Retains DAC code and configuration (reference, gain, power-down) across power cycles; 200-year data retention |
| Auto-recall on reset | Power-on Reset automatically loads EEPROM values into volatile registers-no host initialization needed |
| Selectable output gain | 1x (VDD or VREF reference) or 2x (VREF only)-enables full-scale output up to VDD with reduced reference noise sensitivity |
| Three power-down modes | Configurable VOUT pull-down resistors (1 kΩ, 125 kΩ, 640 kΩ) allow optimized wake-up latency vs. leakage trade-off |
| Rail-to-rail output drive | Delivers 0.01 V to (VDD – 0.04 V) with 0.55 V/µs slew rate-supports wide dynamic range in sensor excitation and offset correction |
Applications
| Sensor Calibration | Motor Control Biasing |
|---|---|
Use Scenario: Compensating offset and gain drift in MEMS accelerometers and RTD signal chains. IC Role / Device Role / Timing Role: Precision DC bias generator providing stable, EEPROM-retained trim voltages independent of host MCU state. Use Value: Eliminates manual calibration; achieves ±0.75% FSR offset error and <±14.5 LSb full-scale error over –40°C to +125°C. |
Use Scenario: Setting current-limit thresholds and PWM dead-time compensation in BLDC gate drivers. IC Role / Device Role / Timing Role: Low-latency analog reference source synchronized via I²C to motor control timing loops. Use Value: 6 µs settling ensures timely response to fault conditions; 3.4 Mbps I²C enables real-time reconfiguration during commutation. |
| Portable Instrumentation | PC Peripheral Analog Interface |
Use Scenario: Generating variable reference voltages for handheld multimeters and portable DAQ front-ends. IC Role / Device Role / Timing Role: Low-power, self-contained DAC delivering calibrated analog outputs without external support circuitry. Use Value: 60 nA power-down current extends battery life; 2.7V operation enables direct Li-ion cell interfacing. |
Use Scenario: Providing adjustable bias for USB audio codec line drivers and thermal management fans. IC Role / Device Role / Timing Role: System-level analog configurator responding to host OS commands via I²C. Use Value: Eight I²C addresses allow multiple instances on shared bus; SOT-23-6 footprint simplifies layout in dense motherboard regions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4725A0T-E/MS | 8-pin MSOP package; no VREF pin; reference fixed to VDD only; same 12-bit resolution and EEPROM | Lacks external reference flexibility and 2x gain option; suited for cost-sensitive, VDD-referenced-only designs | Select when board space permits MSOP and external reference is unnecessary |
| AD5620BRJZ-1500RL7 | 12-bit, SPI interface, no EEPROM, 3.5 µs settling, 2.7–5.5V supply, SOT-23-6 package | Requires continuous host control; no auto-recall; faster settling but no nonvolatile storage | Select when SPI is preferred and host firmware manages calibration persistence |
Compared with MCP4726A3T-E/MAY, the MCP4725A0T-E/MS sacrifices VREF flexibility for lower cost and simpler layout, while the AD5620BRJZ-1500RL7 trades EEPROM and I²C for SPI speed and marginally faster settling-neither offers drop-in replacement capability due to interface, memory, or pinout differences.
Availability
MCP4726A3T-E/MAY is available at Aetrix Electronics and suitable for sensor calibration, motor control biasing, and portable instrumentation requiring stable component supply, extended temperature operation, and EEPROM-based configuration persistence.
Supply support for MCP4726A3T-E/MAY 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 components, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP47X6 family-including MCP4726A3T-E/MAY-is designed for precision analog output in resource-constrained embedded systems, emphasizing EEPROM retention, low-power operation, and robust I²C interoperability across industrial and automotive environments.
FAQ
What is the maximum I²C clock frequency supported by the MCP4726A3T-E/MAY?
The MCP4726A3T-E/MAY supports I²C Standard Mode (100 kHz), Fast Mode (400 kHz), and High-Speed Mode up to 3.4 MHz-subject to VDD ≥ 4.5V and bus capacitance ≤ 100 pF. At 3.4 MHz, it achieves TAA (output valid from clock) of 150 ns with 100 pF load, enabling high-throughput configuration in multi-DAC systems without sacrificing timing margin.
Does the MCP4726A3T-E/MAY retain its DAC output setting after power cycling?
Yes. The MCP4726A3T-E/MAY stores both the DAC register value and configuration bits (voltage reference source, gain, power-down state) in on-chip EEPROM. On Power-on Reset, these values are automatically recalled into volatile registers-no host intervention is required to restore the last known output state.
Can the MCP4726A3T-E/MAY use an external reference voltage higher than VDD/2?
No. When configured for 2x gain (VREF1:VREF0 = 10 or 11), the MCP4726A3T-E/MAY requires VREF ≤ VDD/2 to prevent output saturation or clipping. If VREF exceeds this limit, the output will clip near VDD, and accuracy degrades. For VREF > VDD/2, use unity gain (VREF1:VREF0 = 00 or 01) or select VDD as reference.
What is the output drive capability of the MCP4726A3T-E/MAY's VOUT pin?
The MCP4726A3T-E/MAY's VOUT pin delivers rail-to-rail output (0.01 V to VDD – 0.04 V) and can source or sink up to ±40 mA continuously. It maintains 0.55 V/µs slew rate and 66° phase margin into 400 pF capacitive loads, making it suitable for driving moderate-impedance sensor excitation circuits and op-amp reference inputs.
How does the power-down mode affect the VOUT pin behavior in the MCP4726A3T-E/MAY?
In power-down mode (PD1:PD0 = 01, 10, or 11), the MCP4726A3T-E/MAY disconnects the output buffer and connects VOUT to ground through one of three internal pull-down resistors: 640 kΩ (low current, high impedance), 125 kΩ (medium), or 1 kΩ (strong pull-down). This reduces system quiescent current to 60 nA typical while maintaining defined output state.
MCP4726A3T-E/MAY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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, Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- INL/DNL (LSB):
- ±2, ±0.2
- Architecture:
- R-2R
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 6-DFN (2x2)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP4726A3T-E/MAY FAQ
1.How can I place an order for MCP4726A3T-E/MAY through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4726A3T-E/MAY 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 MCP4726A3T-E/MAY reliable?
The price and inventory of MCP4726A3T-E/MAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP4726A3T-E/MAY is usually 5 days.
3.What payment methods are accepted for MCP4726A3T-E/MAY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4726A3T-E/MAY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4726A3T-E/MAY?
MCP4726A3T-E/MAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4726A3T-E/MAY 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 MCP4726A3T-E/MAY?
For technical support, including MCP4726A3T-E/MAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4726A3T-E/MAY requirements.
6.How does Aetrix verify that MCP4726A3T-E/MAY is sourced from the original manufacturer or authorized distributors?
All MCP4726A3T-E/MAY 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 MCP4726A3T-E/MAY meets industry standards.
7.What is the process for return or replacement of MCP4726A3T-E/MAY?
All MCP4726A3T-E/MAY units undergo pre-shipment inspection (PSI). If there is an issue with MCP4726A3T-E/MAY, 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 MCP4726A3T-E/MAY part is unused and in its original packaging.
Return procedure for MCP4726A3T-E/MAY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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