My Inquiry
My Account
Microchip Technology MCP4901T-E/MC
- Part No.:
- MCP4901T-E/MC
- Manufacturer:
- Microchip Technology
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
MCP4901T-E/MC.pdf
- Description:
- IC DAC 8BIT V-OUT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,017
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCP4901T-E/MC from Microchip Technology is an 8-bit single-channel buffered voltage-output DAC with SPI interface, rail-to-rail output amplifier, and selectable 1x/2x gain. It operates from 2.7V to 5.5V, achieves 4.5 µs settling time, ±0.25 LSB INL (–40°C to +125°C), and supports external voltage reference input for precision analog control in motor feedback and calibration systems.
For engineers reviewing the MCP4901T-E/MC datasheet, MCP4901T-E/MC pinout, MCP4901T-E/MC application, or MCP4901T-E/MC equivalent, key selection criteria include its 8-bit resolution, extended temperature operation (–40°C to +125°C), SPI clock support up to 20 MHz, simultaneous latching via LDAC, and external VREF flexibility for system-level accuracy tuning.
Technical Context
The MCP4901T-E/MC implements a resistive string DAC architecture with double-buffered registers, enabling synchronous output updates via the LDAC pin. Its output amplifier supports rail-to-rail swing (0.01 V to VDD – 0.04 V) and configurable gain (1x or 2x) through the GA bit in the configuration register.
It features a Power-on Reset (POR) circuit with 2.0 V threshold, software shutdown mode (3.3–6 µA typical current), and unbuffered VREF input with 165 kΩ impedance and 7 pF capacitance - enabling use as a digitally controlled multiplier with 400–450 kHz bandwidth depending on gain setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output levels with monotonic transfer function across full temperature range. |
| Settling Time | 4.5 µs - ensures fast response for closed-loop control applications such as motor position correction. |
| INL Error | ±0.25 LSB (–40°C to +125°C) - guarantees high linearity without calibration in industrial environments. |
| SPI Clock Frequency | Up to 20 MHz - enables high-throughput digital control at >2.2 MSPS effective update rate. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration with 3.3V and 5V microcontrollers without level-shifting. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and harsh-environment embedded systems. |
| Output Gain Options | Selectable 1x or 2x - allows full-scale output scaling to match sensor reference or actuator drive requirements. |
Pinout & Package
Package: 8-pin SOIC (MCP4901T-E/MC). Exposed thermal pad (EP) internally connected to VSS and must be soldered to ground plane for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2.7–5.5V; requires 0.1 µF ceramic + 10 µF tantalum bypassing for low-noise DAC operation. |
| CS | Active-low chip select | Enables SPI communication; falling edge initiates data capture sequence per SPI Mode 0,0 or 1,1. |
| SCK | SPI clock input | Supports up to 20 MHz; timing validated for tSU = 15 ns, tHD = 10 ns, tHI/tLO ≥ 15 ns. |
| SDI | SPI serial data input | Accepts 16-bit command/data frame: 4-bit control + 12-bit DAC code (MSB first, 8-bit effective for MCP4901). |
| LDAC | Latch DAC synchronization | Low pulse transfers input register to DAC register; can be tied to VSS for auto-update on CS rising edge. |
| VREF | External voltage reference input | Unbuffered by default; 0–VDD range, 165 kΩ input impedance; enables multiplying DAC operation. |
| VSS | Analog ground reference | Must connect to low-impedance analog ground plane; EP pad electrically tied to VSS. |
| VOUT | Analog output | Rail-to-rail buffered output (0.01 V to VDD – 0.04 V); drives 5 kΩ load with <1/2 LSB settling in 4.5 µs. |
Key Features
| Feature | Design Value |
|---|---|
| Double-buffered registers | Enables glitch-free, synchronized DAC updates across multiple devices using shared LDAC signal. |
| Software shutdown mode | Reduces current to ≤6 µA while retaining SPI accessibility - ideal for power-gated subsystems. |
| Configurable gain (1x/2x) | Extends full-scale output range without external op-amps; gain selected via GA bit in configuration register. |
| Power-on Reset (POR) | Guarantees high-impedance VOUT at power-up until valid write occurs - prevents undefined analog transients. |
| Unbuffered VREF input | Supports wide-range AC-coupled reference signals (e.g., 2.5V ±0.2Vp-p at 1 kHz) for true multiplying DAC functionality. |
Applications
| Motor Control Feedback Loop | Precision Selectable Voltage Reference |
|---|---|
Use Scenario: Closed-loop speed/position control of BLDC motors using MCU-generated DAC setpoints fed to current-sense amplifier inputs. IC Role / Device Role / Timing Role: Voltage-output DAC generating precise analog reference for PWM comparator thresholds or current-loop integrators. Use Value: 4.5 µs settling time and ±0.25 LSB INL ensure rapid, repeatable torque command translation without calibration drift over temperature. | Use Scenario: Programmable bias voltage generation for sensor front-ends (e.g., pressure transducers requiring 0.5–4.5 V adjustable offset). IC Role / Device Role / Timing Role: Precision voltage source with externally referenced full-scale range, configured via SPI from host MCU during system initialization. Use Value: External VREF input and 1x/2x gain selection allow exact matching to sensor excitation requirements without resistor networks. |
| Set Point or Offset Trimming | Calibration of Optical Communication Devices |
Use Scenario: Factory calibration of analog signal paths in industrial I/O modules using stored DAC codes to null DC offsets. IC Role / Device Role / Timing Role: Trim DAC providing stable, non-volatile-adjustable DC bias to op-amp summing junctions. Use Value: Rail-to-rail output swing and 2.7–5.5V supply compatibility enable trimming across full 0–5V signal chain ranges. | Use Scenario: Bias voltage adjustment for laser diode drivers in fiber-optic transceivers to maintain constant optical power across aging and temperature. IC Role / Device Role / Timing Role: High-stability analog control element compensating for TEC and LD thermal drift in real time. Use Value: –40°C to +125°C operation and low gain error temperature coefficient (–3 ppm/°C) ensure calibration integrity in telecom chassis environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-output DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4911T-E/MC | 10-bit resolution, same package, identical pinout and SPI protocol; higher INL (±1 LSB max over temp) and same 4.5 µs settling. | Required where finer analog resolution is needed for sensor linearization or multi-range scaling. | Select when 10-bit granularity improves system SNR or reduces calibration points without changing layout. |
| DAC8560IDR | Texas Instruments 16-bit DAC with internal reference, I²C interface, and 10 µs settling; no LDAC pin or external VREF support. | Preferred for high-accuracy, low-speed calibration where SPI is not required and internal reference suffices. | Choose only if resolution priority outweighs interface compatibility, and system does not require external reference flexibility or LDAC synchronization. |
Compared with MCP4911T-E/MC, the MCP4901T-E/MC trades resolution for lower cost and reduced code space; compared with DAC8560IDR, it offers superior SPI throughput, external VREF control, and deterministic LDAC-triggered updates - critical for real-time embedded control loops.
Availability
MCP4901T-E/MC is available at Aetrix Electronics and suitable for motor control feedback loops, precision voltage reference generation, and factory calibration systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP4901T-E/MC 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog, and interface ICs for industrial, automotive, and consumer applications.
The MCP49xx family was designed as low-power, SPI-compatible voltage-output DACs targeting embedded control systems needing precision analog outputs with minimal external components and robust extended-temperature operation.
FAQ
What is the maximum SPI clock frequency supported by the MCP4901T-E/MC?
The MCP4901T-E/MC supports SPI clock frequencies up to 20 MHz at +25°C, with timing parameters validated for tSU = 15 ns and tHD = 10 ns. At extended temperatures (–40°C to +125°C), reliable operation is maintained within the device's AC specifications, though system-level margin should account for PCB trace delays and driver strength.
Does the MCP4901T-E/MC include an internal voltage reference?
No, the MCP4901T-E/MC does not include an internal voltage reference. It requires an external reference applied to the VREF pin, supporting both buffered and unbuffered modes. This design enables flexible full-scale range selection (e.g., 2.048 V, 2.5 V, or 4.096 V) and multiplying DAC operation - a key distinction from internal-reference DACs like the MCP48xx series.
How does the LDAC pin function in the MCP4901T-E/MC?
The LDAC pin on the MCP4901T-E/MC controls synchronous latching of the DAC output register. When pulled low, it immediately transfers the contents of the input register to the DAC register, updating VOUT. It can be tied to VSS for automatic update on CS rising edge, or driven by an MCU GPIO for coordinated multi-DAC updates - essential for glitch-free waveform generation.
What is the output voltage range of the MCP4901T-E/MC?
The MCP4901T-E/MC provides rail-to-rail output swing from 0.01 V above VSS to VDD – 0.04 V, with accuracy better than 1 LSB across that range. Output voltage is calculated as VOUT = (Dn / 256) × G × VREF, where Dn is the 8-bit code (0–255), G is gain (1 or 2), and VREF is the externally supplied reference voltage.
Can the MCP4901T-E/MC operate in shutdown mode while retaining SPI responsiveness?
Yes, the MCP4901T-E/MC supports software shutdown mode where most internal circuits power down, reducing supply current to ≤6 µA, while the SPI interface remains fully active. A write command with the SHDN bit set to '1' exits shutdown and restores normal DAC operation - enabling low-power sleep states without losing communication capability.
MCP4901T-E/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 8
- Number of D/A Converters:
- 1
- Settling Time:
- 4.5µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- SPI
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- INL/DNL (LSB):
- ±0.25, ±0.2
- Architecture:
- String DAC
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP4901T-E/MC FAQ
1.How can I place an order for MCP4901T-E/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4901T-E/MC 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 MCP4901T-E/MC reliable?
The price and inventory of MCP4901T-E/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP4901T-E/MC is usually 5 days.
3.What payment methods are accepted for MCP4901T-E/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4901T-E/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4901T-E/MC?
MCP4901T-E/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4901T-E/MC 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 MCP4901T-E/MC?
For technical support, including MCP4901T-E/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4901T-E/MC requirements.
6.How does Aetrix verify that MCP4901T-E/MC is sourced from the original manufacturer or authorized distributors?
All MCP4901T-E/MC 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 MCP4901T-E/MC meets industry standards.
7.What is the process for return or replacement of MCP4901T-E/MC?
All MCP4901T-E/MC units undergo pre-shipment inspection (PSI). If there is an issue with MCP4901T-E/MC, 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 MCP4901T-E/MC part is unused and in its original packaging.
Return procedure for MCP4901T-E/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP4901T-E/MC Tags
-
MCP47A1T-A0E/LT
Microchip Technology
-
MCP4706A0T-E/CH
Microchip Technology
-
MCP4716A0T-E/MAY
Microchip Technology
-
MCP4716A0T-E/CH
Microchip Technology
-
MCP4726A0T-E/CH
Microchip Technology
-
MCP4725A0T-E/CH
Microchip Technology
-
MCP4725A1T-E/CH
Microchip Technology
-
MCP4725A2T-E/CH
Microchip Technology
-
MCP4726A1T-E/CH
Microchip Technology
-
MCP4726A3T-E/CH
Microchip Technology
-
MCP4726A2T-E/CH
Microchip Technology
-
MCP4726A0T-E/MAY
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
