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Analog Devices Inc. LTC2632HTS8-LX12#TRMPBF
- Part No.:
- LTC2632HTS8-LX12#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2632HTS8-LX12#TRMPBF.pdf
- Description:
- IC DAC 12BIT V-OUT TSOT23-8
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2632HTS8-LX12#TRMPBF from Analog Devices is a dual 12-bit voltage-output DAC with integrated 10ppm/°C precision reference, rail-to-rail output buffers, and guaranteed monotonicity over –40°C to 125°C. It operates from 2.7V to 5.5V, delivers ±1.5LSB max INL (A-grade), settles in 4.4µs to ±1LSB, and supports SPI/MICROWIRE up to 50MHz - used in automotive sensor calibration and industrial closed-loop control systems.
For engineers reviewing the LTC2632HTS8-LX12#TRMPBF datasheet, LTC2632HTS8-LX12#TRMPBF pinout, LTC2632HTS8-LX12#TRMPBF application, or LTC2632HTS8-LX12#TRMPBF equivalent, key selection criteria include external-reference mid-scale power-on reset behavior, TSOT-23 package constraints, dual-channel crosstalk (<6.7nV·s), and guaranteed monotonicity across full automotive temperature range.
Technical Context
The LTC2632HTS8-LX12#TRMPBF implements two independent 12-bit DAC cores sharing a single 3-wire SPI interface with command/address/data framing (24- or 32-bit). Its internal architecture includes double-buffered input and DAC registers, power-on reset logic that forces both outputs to mid-scale when using external reference mode, and a switchable reference path routing either internal 1.25V bandgap (for 2.5V full-scale) or user-supplied VREF (1V to VCC).
It features rail-to-rail output amplifiers with 0.09Ω DC output impedance, low-glitch design (2.8nV·s typical mid-scale impulse), and integrated reference buffer capable of driving up to 10µF capacitive load. The device guarantees monotonicity down to code 26 (per Note 3) and maintains ±10ppm/°C gain drift over temperature when using internal reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels with ±1.5LSB integral nonlinearity (A-grade) |
| Full-Scale Output | 0 to VREF - set by external reference voltage (1V ≤ VREF ≤ VCC); no internal reference active |
| Power-On Reset | Mid-scale in external reference mode - both DACs initialize to VREF/2 at power-up |
| Settling Time | 4.4µs to ±1LSB - ensures fast response for closed-loop feedback and waveform generation |
| Reference Input Range | 1V to VCC - supports flexible external reference selection including 2.048V, 2.5V, 3.3V, or 4.096V sources |
| Supply Voltage | 2.7V to 5.5V - enables direct operation from common industrial and automotive rails |
| Temperature Range | –40°C to 125°C - qualified for under-hood automotive and harsh industrial environments |
Pinout & Package
Package: 8-lead TSOT-23 (Thin Small Outline Transistor), 3mm × 1.7mm footprint, 0.65mm pitch, thermal resistance θJA = 195°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCK (Pin 1) | Serial clock input | CMOS/TTL-compatible; accepts up to 50MHz clock for high-speed SPI/MICROWIRE communication |
| CS/LD (Pin 2) | Chip select / load strobe | Level-triggered enable; falling edge initiates data capture, rising edge executes command |
| REF (Pin 3) | Reference input/output | In external reference mode: high-impedance input (120–200kΩ) accepting 1V–VCC; bypass with 0.1µF recommended |
| GND (Pin 4) | Analog/digital ground | Single ground pin shared by analog and digital sections; requires low-impedance PCB connection |
| VOUTA (Pin 5) | DAC A analog output | Rail-to-rail buffered voltage output; drives ±10mA; 0.09Ω DC output impedance |
| VOUTB (Pin 6) | DAC B analog output | Independent rail-to-rail output; <6.7nV·s dynamic crosstalk when DAC A switches full-scale |
| VCC (Pin 7) | Positive supply | 2.7V–5.5V operation; requires 0.1µF ceramic bypass capacitor placed adjacent to pin |
| SDI (Pin 8) | Serial data input | MSB-first 24- or 32-bit frame: 4-bit command + 4-bit address + 16-bit data (12-bit code + 4 don't-care bits) |
Key Features
| Feature | Design Value |
|---|---|
| External-reference mid-scale power-on reset | Ensures deterministic startup state without software intervention - critical for fail-safe automotive actuator control |
| Guaranteed monotonicity (–40°C to 125°C) | Eliminates output reversals during temperature cycling - essential for precision closed-loop systems |
| Double-buffered data latches | Enables simultaneous update of both DAC outputs via single command - prevents transient mismatches in dual-channel systems |
| Low-glitch energy (2.8nV·s typ.) | Minimizes transient injection into sensitive analog circuits - improves signal integrity in metrology applications |
| Integrated reference buffer (10µF drive capability) | Allows direct connection of large decoupling caps without external op-amp - reduces BOM count and layout complexity |
Applications
| Automotive Sensor Calibration | Industrial Process Control |
|---|---|
|
Use Scenario: Calibrating pressure, temperature, and position sensors in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Dual-channel DAC generating precise bias voltages and reference offsets for sensor front-end conditioning. Use Value: Mid-scale power-on reset ensures safe default state during cold start; ±1.5LSB INL enables sub-0.05% calibration accuracy over lifetime. |
Use Scenario: Controlling pneumatic valves, motor drives, and analog I/O modules in PLCs and DCS systems. IC Role / Device Role / Timing Role: Dual voltage source providing setpoint references and loop compensation signals in real-time control loops. Use Value: 4.4µs settling time supports >100kHz control bandwidth; rail-to-rail output maximizes usable dynamic range from 24V or 3.3V supplies. |
| Portable Medical Instrumentation | Test & Measurement Equipment |
|
Use Scenario: Generating programmable excitation voltages for biosensor arrays and impedance spectroscopy front-ends. IC Role / Device Role / Timing Role: Low-power dual DAC supplying stable, low-noise bias for battery-operated handheld diagnostics. Use Value: 0.4mA supply current at 3V extends battery life; 0.1Hz–200kHz output noise of 730µVP-P preserves SNR in µV-level measurements. |
Use Scenario: Precision waveform synthesis and stimulus generation in automated test equipment (ATE) and calibration standards. IC Role / Device Role / Timing Role: Dual-channel arbitrary voltage source synchronized via shared SPI interface for correlated signal generation. Use Value: <6.7nV·s DAC-to-DAC crosstalk prevents channel interference; 50MHz SPI enables rapid pattern loading for high-throughput testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel voltage-output DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5662BRMZ-1REEL7 | Single 12-bit DAC, 2.5V internal reference only, no external reference support, 2.7–5.5V supply | Lacks dual-channel capability and external reference flexibility; suitable only for single-output systems | Select when only one precision output is required and board space permits separate DAC per channel |
| MCP4922-E/P | 12-bit dual DAC with 2.048V internal reference, SPI interface, but no power-on reset to mid-scale in external reference mode | Requires external initialization firmware; not qualified for automotive temperature range (–40°C to 125°C) | Choose for cost-sensitive industrial designs where extended temperature qualification is unnecessary |
Compared with AD5662BRMZ-1REEL7 and MCP4922-E/P, the LTC2632HTS8-LX12#TRMPBF uniquely combines dual 12-bit channels, external-reference mid-scale power-on reset, and AEC-Q100–compatible automotive temperature rating - enabling single-chip solutions for safety-critical, multi-signal calibration systems without firmware dependency.
Availability
LTC2632HTS8-LX12#TRMPBF is available at Aetrix Electronics and suitable for automotive sensor calibration, industrial process control, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2632HTS8-LX12#TRMPBF 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 LTC2632 product line delivers compact, high-accuracy dual DACs with integrated references for space-constrained systems demanding precision, reliability, and simplified power-on behavior - especially in automotive and industrial control.
FAQ
What does the "LX" suffix in LTC2632HTS8-LX12#TRMPBF indicate?
The "LX" denotes external reference mode with mid-scale power-on reset behavior. Unlike "LI" (internal reference, mid-scale reset) or "LZ" (internal reference, zero-scale reset), the LTC2632HTS8-LX12#TRMPBF initializes both DAC outputs to VREF/2 at power-up - ensuring predictable startup when driven by an external reference source such as a precision voltage reference IC or filtered DAC output.
Does LTC2632HTS8-LX12#TRMPBF support true rail-to-rail output swing?
Yes, the LTC2632HTS8-LX12#TRMPBF provides rail-to-rail output voltage swing - VOUTA and VOUTB each deliver 0V to VCC across the full operating temperature range (–40°C to 125°C) when loaded within ±10mA. This is achieved via dedicated rail-to-rail output amplifiers, confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables for both LTC2632-L and -H variants.
Can LTC2632HTS8-LX12#TRMPBF operate from a 3.3V supply while using a 2.5V external reference?
Yes - the LTC2632HTS8-LX12#TRMPBF supports VCC = 2.7V to 5.5V and external reference voltage (VREF) from 1V to VCC. With VCC = 3.3V and VREF = 2.5V, the device delivers 0V to 2.5V full-scale output, maintains ±1.5LSB INL (A-grade), and draws only 0.4mA supply current, making it ideal for low-power 3.3V systems requiring precise 2.5V-range analog outputs.
How is the 12-bit data word structured in the SPI frame for LTC2632HTS8-LX12#TRMPBF?
The LTC2632HTS8-LX12#TRMPBF accepts a 24-bit SPI frame: bits [23:20] = command (0b0011 for "Write & Update DAC Register n"), bits [19:16] = address (0b0000 for DAC A, 0b0001 for DAC B), and bits [15:0] = 12-bit data word (MSB first) followed by 4 don't-care bits. A 32-bit variant prepends 8 don't-care bits - compatible with 16-bit microcontroller peripherals.
Is LTC2632HTS8-LX12#TRMPBF qualified for automotive applications?
Yes - the "H" grade in LTC2632HTS8-LX12#TRMPBF indicates qualification for the automotive temperature range (–40°C to 125°C), and the device meets AEC-Q100 stress test requirements. It is specified for use in engine control, body electronics, and ADAS subsystems where guaranteed monotonicity, low-glitch performance, and deterministic power-on behavior are mandatory.
LTC2632HTS8-LX12#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 2
- Settling Time:
- 4.4µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- SPI
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- INL/DNL (LSB):
- ±1, ±1 (Max)
- Architecture:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2632HTS8-LX12#TRMPBF FAQ
1.How can I place an order for LTC2632HTS8-LX12#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2632HTS8-LX12#TRMPBF 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 LTC2632HTS8-LX12#TRMPBF reliable?
The price and inventory of LTC2632HTS8-LX12#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2632HTS8-LX12#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2632HTS8-LX12#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2632HTS8-LX12#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2632HTS8-LX12#TRMPBF?
LTC2632HTS8-LX12#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2632HTS8-LX12#TRMPBF 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 LTC2632HTS8-LX12#TRMPBF?
For technical support, including LTC2632HTS8-LX12#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2632HTS8-LX12#TRMPBF requirements.
6.How does Aetrix verify that LTC2632HTS8-LX12#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2632HTS8-LX12#TRMPBF 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 LTC2632HTS8-LX12#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2632HTS8-LX12#TRMPBF?
All LTC2632HTS8-LX12#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2632HTS8-LX12#TRMPBF, 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 LTC2632HTS8-LX12#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2632HTS8-LX12#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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