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Analog Devices Inc. LTC2634IMSE-HMX12#TRPBF
- Part No.:
- LTC2634IMSE-HMX12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2634IMSE-HMX12#TRPBF.pdf
- Description:
- IC DAC 12BIT V-OUT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,402
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Product details
Overview
LTC2634IMSE-HMX12#TRPBF from Analog Devices is a quad 12-bit rail-to-rail voltage-output DAC with integrated 4.096V ±10ppm/°C reference, operating from 4.5V to 5.5V supply. It features SPI/MICROWIRE-compatible 3-wire interface (up to 50MHz), double-buffered latches, asynchronous LDAC update, and power-on reset to mid-scale in external reference mode. Used in precision industrial control loops requiring stable multi-channel analog output.
For engineers reviewing the LTC2634IMSE-HMX12#TRPBF datasheet, LTC2634IMSE-HMX12#TRPBF pinout, LTC2634IMSE-HMX12#TRPBF application, or LTC2634IMSE-HMX12#TRPBF equivalent, key selection criteria include guaranteed monotonicity over –40°C to 125°C, ±2.5 LSB INL, ultralow 2.4nV·s DAC-to-DAC crosstalk, and MSOP-10 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC2634IMSE-HMX12#TRPBF implements four independent 12-bit DAC cores sharing a single 32-bit shift register and decode logic. Its internal reference switch selects between external reference input (1V to VCC) and internal 2.048V reference (half-scale for 4.096V full-scale), with REFLO tied to GND to define zero-scale. Power-on reset asserts mid-scale code (2048) when external reference is active.
Control architecture supports both software-triggered updates (via CS/LD high then low) and hardware-triggered updates (via LDAC falling edge). The device incorporates hardware clear (CLR) for immediate zero/mid-scale reset and SDO for daisy-chain configuration - all accessible only in QFN packages; the MSOP-10 variant omits LDAC, CLR, and SDO pins per pinout constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels with ±2.5 LSB integral nonlinearity over full temperature range. |
| Full-Scale Output | 4.096V - fixed by internal reference; enables precise 1mV/LSB step resolution for calibration-grade applications. |
| Reference Tempco | ±10ppm/°C - ensures ≤±0.5mV drift over –40°C to 125°C, critical for automotive and industrial environments. |
| Supply Range | 4.5V to 5.5V - mandates use with regulated 5V rails; excludes operation below 4.5V unlike LTC2634-L variants. |
| Settling Time | 4.8µs to ±1 LSB - guarantees fast response for closed-loop feedback systems sampling at ≥100kHz. |
| Crosstalk | 2.4nV·s - limits interference between channels during simultaneous updates, preserving signal integrity in multi-axis control. |
| Power Consumption | 0.7mA typical at 5V - supports low-power portable instrumentation without thermal derating concerns. |
Pinout & Package
Package: 10-lead MSOP (MSE), 3mm × 3mm body, exposed pad (Pin 11) soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | Must be bypassed with 0.1µF capacitor to GND; supplies all DAC cores and reference circuitry. |
| VOUTA–VOUTD (Pins 2–3, 8–9) | Analog voltage outputs | Rail-to-rail buffered outputs; each drives ≥2kΩ load with <0.156Ω DC impedance. |
| CS/LD (Pin 4) | Chip select / load command | Active-low serial interface enable; rising edge executes command after data latch (24-/32-bit). |
| SCK (Pin 5) | Serial clock input | Accepts up to 50MHz CMOS/TTL clock; timing-critical for jitter-sensitive control loops. |
| SDI (Pin 6) | Serial data input | MSB-first data stream; supports daisy-chain via SDO on QFN only - not available on MSE package. |
| REF (Pin 7) | Reference I/O | In external reference mode: input (1V–VCC); in internal mode: 2.048V output (bypass with ≤10µF). |
| GND (Pin 10) | Analog/digital ground | Common return for VOUTs, REF, and digital logic; exposed pad (Pin 11) must connect here. |
Key Features
| Feature | Design Value |
|---|---|
| Quad 12-bit DAC with rail-to-rail output | Enables compact 4-channel analog generation in single MSOP-10 footprint - eliminates need for discrete op-amp buffers. |
| Integrated 4.096V reference (±10ppm/°C) | Removes external reference IC and trimming components, reducing BOM count and layout area while maintaining automotive-grade stability. |
| Power-on reset to mid-scale (external ref) | Prevents transient overvoltage at startup in systems where downstream circuitry is powered before DAC - avoids actuator jerk or sensor saturation. |
| Guaranteed monotonicity (–40°C to 125°C) | Ensures predictable stepwise output behavior across full automotive temperature range, eliminating risk of control loop instability. |
| Ultralow DAC-to-DAC crosstalk (2.4nV·s) | Preserves channel independence in synchronized multi-axis motion control, preventing unintended coupling between motor phases or valve positions. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Output Module |
|---|---|
Use Scenario: Generating calibrated bias voltages for oxygen sensor conditioning circuits and throttle position feedback loops. IC Role / Device Role / Timing Role: Quad DAC provides four independent, temperature-stable analog setpoints synchronized to ECU main controller via SPI. Use Value: ±10ppm/°C reference and –40°C to 125°C monotonicity ensure consistent A/F ratio control across engine cold start to full-load operation. | Use Scenario: Driving 4-channel 4–20mA current loops via external transimpedance amplifiers in modular I/O racks. IC Role / Device Role / Timing Role: Voltage-output DAC serves as precision current source reference; LDAC enables simultaneous channel update for coordinated actuator control. Use Value: 2.4nV·s crosstalk and 4.8µs settling time prevent current-loop interaction and support 100kHz servo update rates. |
| Portable Medical Infusion Pump | Test & Measurement Calibration Source |
Use Scenario: Setting precise pressure thresholds and flow-rate references for microfluidic valve drivers in battery-powered devices. IC Role / Device Role / Timing Role: Low-power 12-bit DAC generates rail-to-rail analog commands for piezoelectric actuators with minimal quiescent current draw. Use Value: 0.7mA supply current at 5V and 4.096V full-scale enable >24-hour battery life while maintaining 1mV/LSB resolution. | Use Scenario: Providing traceable, multi-channel DC voltage standards for automated calibration of DMMs and oscilloscopes. IC Role / Device Role / Timing Role: Precision DAC acts as programmable voltage source with metrology-grade linearity and thermal stability. Use Value: ±2.5 LSB INL and ±10ppm/°C tempco meet ANSI/NCSL Z540 calibration uncertainty requirements for Class II standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5686RBCPZ-RL7 | 16-bit resolution, 2.5V internal reference, 16-lead LFCSP; includes internal 2.5V ref (±2ppm/°C), but no external ref mode. | Higher resolution suits metrology; lacks external reference flexibility and automotive temp grade (–40°C to 105°C only). | Select when absolute accuracy > resolution is required and 4.096V full-scale is not mandatory. |
| DAC8564IDGSR | 16-bit, 2.7V–5.5V supply, 10-lead VSSOP; uses external reference only, no internal ref; ±4 LSB INL at 12-bit equivalent. | Lower cost for non-automotive use; requires external precision reference and suffers higher INL vs. LTC2634IMSE-HMX12#TRPBF. | Select for commercial-grade systems where 4.096V full-scale and automotive qualification are unnecessary. |
Compared with AD5686RBCPZ-RL7 and DAC8564IDGSR, the LTC2634IMSE-HMX12#TRPBF uniquely combines AEC-Q100 qualification, integrated 4.096V reference, and guaranteed monotonicity over –40°C to 125°C - making it optimal for safety-critical automotive and harsh-environment industrial control.
Availability
LTC2634IMSE-HMX12#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog output modules, portable medical infusion pumps, and test & measurement calibration sources requiring stable component supply across extended temperature ranges.
Supply support for LTC2634IMSE-HMX12#TRPBF 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2634 product line delivers quad, rail-to-rail voltage-output DACs with integrated precision references for applications demanding multi-channel analog control with minimal board space and thermal drift - especially in automotive and industrial settings.
FAQ
What is the full-scale output voltage of the LTC2634IMSE-HMX12#TRPBF?
The LTC2634IMSE-HMX12#TRPBF has a fixed full-scale output voltage of 4.096V when using its internal reference. This value is derived from the integrated 2.048V reference (half-scale) and is specified across the entire –40°C to 125°C operating range. External reference mode allows scaling to other full-scale values, but the LTC2634IMSE-HMX12#TRPBF is configured for mid-scale power-on reset in that mode.
Does the LTC2634IMSE-HMX12#TRPBF support SPI communication?
Yes, the LTC2634IMSE-HMX12#TRPBF supports SPI/MICROWIRE-compatible 3-wire serial communication with CS/LD, SCK, and SDI pins. It accepts 24-bit or 32-bit words at clock rates up to 50MHz. Note that the MSOP-10 package (IMSE) does not include SDO or LDAC pins, limiting daisy-chaining and hardware-triggered updates compared to the QFN variant.
What is the operating temperature range for the LTC2634IMSE-HMX12#TRPBF?
The LTC2634IMSE-HMX12#TRPBF is rated for –40°C to 125°C, meeting AEC-Q100 Grade H automotive qualification. This extended range is validated for guaranteed monotonicity, ±2.5 LSB INL, and stable 4.096V full-scale output across the full span, making it suitable for under-hood and industrial control applications.
How does the power-on reset behavior work for the LTC2634IMSE-HMX12#TRPBF?
The LTC2634IMSE-HMX12#TRPBF powers up to mid-scale (2048 = 2.048V) when external reference mode is selected - indicated by the "MX" suffix. This behavior prevents disruptive transients in downstream circuitry during system startup. Internal reference mode would yield 2.048V output; external mode scales mid-scale to half the applied VREF voltage.
Can the LTC2634IMSE-HMX12#TRPBF drive capacitive loads directly?
Yes, the LTC2634IMSE-HMX12#TRPBF can drive capacitive loads up to 500pF while maintaining 4.8µs settling time to ±1 LSB. For larger loads (e.g., >1nF), an external unity-gain buffer is recommended to avoid instability or overshoot. The output stage is rail-to-rail and capable of sourcing/sinking ±27mA, but sustained short-circuit conditions require thermal design consideration.
LTC2634IMSE-HMX12#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 4
- Settling Time:
- 4.8µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- SPI
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- INL/DNL (LSB):
- ±1, ±1 (Max)
- Architecture:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2634IMSE-HMX12#TRPBF FAQ
1.How can I place an order for LTC2634IMSE-HMX12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2634IMSE-HMX12#TRPBF 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 LTC2634IMSE-HMX12#TRPBF reliable?
The price and inventory of LTC2634IMSE-HMX12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2634IMSE-HMX12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2634IMSE-HMX12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2634IMSE-HMX12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2634IMSE-HMX12#TRPBF?
LTC2634IMSE-HMX12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2634IMSE-HMX12#TRPBF 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 LTC2634IMSE-HMX12#TRPBF?
For technical support, including LTC2634IMSE-HMX12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2634IMSE-HMX12#TRPBF requirements.
6.How does Aetrix verify that LTC2634IMSE-HMX12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2634IMSE-HMX12#TRPBF 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 LTC2634IMSE-HMX12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2634IMSE-HMX12#TRPBF?
All LTC2634IMSE-HMX12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2634IMSE-HMX12#TRPBF, 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 LTC2634IMSE-HMX12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2634IMSE-HMX12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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