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Microchip Technology MCP4911T-E/SN
- Part No.:
- MCP4911T-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP4911T-E/SN.pdf
- Description:
- IC DAC 10BIT V-OUT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,136
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Product details
Overview
MCP4911T-E/SN from Microchip Technology is a 10-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, supports external reference input (0–VDD), and is rated for -40°C to +125°C operation - used in precision motor control feedback loops and optical device calibration.
For engineers reviewing the MCP4911T-E/SN datasheet, MCP4911T-E/SN pinout, MCP4911T-E/SN application, or MCP4911T-E/SN equivalent, key selection criteria include guaranteed monotonicity, ±0.5 LSB INL (max), software shutdown capability, LDAC-synchronized latching, and compatibility with 20 MHz SPI clock in Mode 0,0 or Mode 1,1 configurations.
Technical Context
The MCP4911T-E/SN 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) via the GA bit in the configuration register.
It features an unbuffered VREF input (0–VDD range, 165 kΩ impedance, 7 pF capacitance), Power-on Reset (VPOR = 2.0 V typical), and software-controlled shutdown mode with 3.3–6 µA current draw. The SPI interface complies with Mode 0,0 and Mode 1,1 timing, supporting up to 20 MHz clock frequency with 15 ns setup/hold requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1,024 discrete output levels with monotonic transfer function across full temperature range. |
| Settling Time | 4.5 µs - ensures stable analog output within ½ LSB after code change, critical for closed-loop control response. |
| INL Error | ±0.5 LSB (max) - limits integral nonlinearity impact on absolute accuracy in calibration applications. |
| SPI Clock Rate | 20 MHz - enables high-throughput digital control at up to ~1.95 MSPS update rate (with minimal overhead). |
| Supply Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment sensing. |
| Output Swing | 0.01 V to VDD – 0.04 V - rail-to-rail capability maximizes dynamic range for low-voltage systems. |
Pinout & Package
Package: 8-lead SOIC (Small Outline Integrated Circuit), surface-mount, standard JEDEC MS-012AA footprint (5.3 mm × 5.3 mm × 1.75 mm height). Exposed pad not present - distinct from DFN variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | 2.7–5.5V single supply; requires 0.1 µF ceramic + 10 µF tantalum bypassing for noise-sensitive DAC performance. |
| CS | Active-low chip select | Enables SPI communication; falling edge initiates data capture sequence; must meet tCSSR ≥ 40 ns timing. |
| SCK | SPI clock input | Accepts up to 20 MHz clock; supports Mode 0,0 (CPOL=0, CPHA=0) and Mode 1,1 (CPOL=1, CPHA=1). |
| SDI | SPI serial data input | MSB-first, 16-bit frame (12-bit command + 10-bit data); requires tSU ≥ 15 ns and tHD ≥ 10 ns relative to SCK. |
| LDAC | Latch DAC synchronization | Low pulse transfers input register to DAC register; can be tied low for CS-edge-triggered updates. |
| VREF | External reference input | Unbuffered by default (0–VDD range, 165 kΩ || 7 pF); enables multiplying DAC operation or precision scaling. |
| VSS | Analog ground reference | Must connect to low-impedance analog ground plane; internal connection to all analog circuitry and bias networks. |
| VOUT | Analog voltage output | Rail-to-rail buffered output; full-scale = G × VREF × (D/1024), where G = 1 or 2, D = 10-bit code. |
Key Features
| Feature | Design Value |
|---|---|
| Double-buffered registers | Enables glitch-free, synchronized DAC updates across multiple devices using shared LDAC signal. |
| Selectable 1x/2x output gain | Configurable via GA bit; 2x gain doubles full-scale range without external op-amp, reducing BOM count. |
| Software shutdown mode | Reduces supply current to ≤6 µA while retaining SPI accessibility - ideal for power-gated subsystems. |
| Power-on Reset (POR) | Ensures high-impedance VOUT at power-up until valid write occurs; prevents spurious output transients. |
| Extended temperature rating | Specified over -40°C to +125°C with validated INL/DNL, enabling use in engine control units and industrial PLCs. |
Applications
| Motor Control Feedback Loop | Precision Voltage Reference Generation |
|---|---|
Use Scenario: Closed-loop position/speed control in BLDC or stepper motor drivers requiring real-time analog setpoint adjustment. IC Role / Device Role / Timing Role: DAC generates precise analog reference for current/voltage comparators or op-amp summing nodes in servo amplifiers. Use Value: 10-bit resolution and 4.5 µs settling enable <100 µs loop update cycles; rail-to-rail output matches amplifier input ranges. |
Use Scenario: Programmable reference source for ADCs, sensor signal conditioning, or voltage-controlled oscillators. IC Role / Device Role / Timing Role: Provides stable, digitally adjustable DC bias or offset voltage with low drift (0.16 ppm/°C offset TC). Use Value: External VREF input allows traceable calibration against metrology-grade references; 2x gain extends range to 10.24 VFS with 2.048 V reference. |
| Optical Communication Calibration | Digitally-Controlled Multiplier |
Use Scenario: Bias current tuning of laser diodes or transimpedance amplifier offsets in fiber-optic transceivers. IC Role / Device Role / Timing Role: Delivers stable, low-noise analog bias voltage with minimal code-dependent glitch energy (<45 nV·s). Use Value: Guaranteed monotonicity and ±0.5 LSB INL ensure repeatable optical power alignment; extended temp rating supports telecom chassis environments. |
Use Scenario: Variable gain stage in automatic gain control (AGC) or programmable attenuator circuits. IC Role / Device Role / Timing Role: Functions as multiplying DAC with VREF driven by AC signal (e.g., RF envelope), VOUT = (D/1024) × G × VREF(t). Use Value: 450 kHz -3 dB bandwidth (G=1) supports audio-band modulation; unbuffered VREF input preserves signal integrity up to 1 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-output DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4912-E/SN | 2-channel 10-bit DAC in same SOIC-8 package; shares identical electrical specs but adds second independent DAC channel. | Required when dual simultaneous analog outputs are needed (e.g., differential signaling or dual-axis control). | Select MCP4912-E/SN only if channel count justifies added complexity; pinout differs (VOUT2 replaces LDAC), requiring PCB redesign. |
| AD5310BRMZ-REEL7 | 10-bit single DAC from Analog Devices; includes internal 2.5 V reference, no external VREF option, and different SPI framing (16-bit with address byte). | Suitable for space-constrained designs where external reference sourcing is impractical or cost-sensitive. | Choose AD5310BRMZ-REEL7 when internal reference suffices and board layout cannot accommodate external VREF routing. |
Compared with MCP4912-E/SN, the MCP4911T-E/SN offers lower channel count but retains LDAC functionality for synchronized updates; versus AD5310BRMZ-REEL7, it provides greater flexibility via external VREF and multiplier-mode operation at the cost of higher system-level design effort.
Availability
MCP4911T-E/SN is available at Aetrix Electronics and suitable for motor control feedback loops, optical calibration systems, precision voltage reference generation, and digitally-controlled multiplier circuits requiring stable component supply across industrial and automotive production lifecycles.
Supply support for MCP4911T-E/SN 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, headquartered in Chandler, Arizona, serving industrial, automotive, consumer, and communications markets.
The MCP49xx family was designed specifically for high-accuracy, low-glitch, single-supply voltage-output DAC applications requiring SPI interface, extended temperature operation, and flexible reference architecture - targeting calibration, control, and signal synthesis.
FAQ
What is the maximum SPI clock frequency supported by the MCP4911T-E/SN?
The MCP4911T-E/SN supports SPI clock frequencies up to 20 MHz at +25°C, with timing compliance verified for Mode 0,0 and Mode 1,1. At extended temperatures (-40°C to +125°C), the device maintains reliable operation at this rate per Microchip's AC characterization; actual system-level margin depends on PCB layout, signal integrity, and VDD stability.
Does the MCP4911T-E/SN require an external voltage reference?
Yes, the MCP4911T-E/SN requires an external voltage reference applied to the VREF pin. It does not include an internal reference. The VREF input accepts 0 V to VDD, supports unbuffered operation (165 kΩ || 7 pF), and enables multiplying DAC functionality when driven by AC signals - a core design feature distinguishing it from integrated-reference DACs.
How does the LDAC pin function in the MCP4911T-E/SN?
The LDAC pin on the MCP4911T-E/SN controls synchronous latching of the DAC output: when pulled low, it transfers data from the input register to the DAC register, updating VOUT. It can be tied to VSS for CS-edge-triggered updates or driven by an MCU GPIO for precise timing control - essential for multi-DAC synchronization in systems like motor phase control.
What is the guaranteed INL specification for the MCP4911T-E/SN over temperature?
The MCP4911T-E/SN guarantees ±1 LSB INL maximum over the extended temperature range (-40°C to +125°C), as confirmed in Section 1.0 "Electrical Characteristics with Extended Temperature" of DS22248A. This is tighter than the ±3.5 LSB limit specified at -40°C to +85°C, reflecting characterization across the full operating range.
Can the MCP4911T-E/SN operate with a 3.3V supply?
Yes, the MCP4911T-E/SN is fully specified for 2.7V to 5.5V single-supply operation. At 3.3V, it maintains all key specifications including 4.5 µs settling time, ±0.5 LSB INL (typical), rail-to-rail output swing (0.01 V to 3.26 V), and 20 MHz SPI compatibility - making it compatible with modern 3.3V microcontrollers without level translation.
MCP4911T-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 10
- 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):
- ±1, ±0.2
- Architecture:
- String DAC
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP4911T-E/SN FAQ
1.How can I place an order for MCP4911T-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4911T-E/SN 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 MCP4911T-E/SN reliable?
The price and inventory of MCP4911T-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP4911T-E/SN is usually 5 days.
3.What payment methods are accepted for MCP4911T-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4911T-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4911T-E/SN?
MCP4911T-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4911T-E/SN 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 MCP4911T-E/SN?
For technical support, including MCP4911T-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4911T-E/SN requirements.
6.How does Aetrix verify that MCP4911T-E/SN is sourced from the original manufacturer or authorized distributors?
All MCP4911T-E/SN 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 MCP4911T-E/SN meets industry standards.
7.What is the process for return or replacement of MCP4911T-E/SN?
All MCP4911T-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP4911T-E/SN, 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 MCP4911T-E/SN part is unused and in its original packaging.
Return procedure for MCP4911T-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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