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Analog Devices Inc. LTC2631HTS8-HM8#TRMPBF
- Part No.:
- LTC2631HTS8-HM8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2631HTS8-HM8#TRMPBF.pdf
- Description:
- IC DAC 8BIT V-OUT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,499
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Product details
Overview
LTC2631HTS8-HM8#TRMPBF from Analog Devices is a single 8-bit voltage-output DAC with integrated 4.096V ±10ppm/°C reference, rail-to-rail buffered output, I²C interface (up to 400kHz), and power-on reset to mid-scale. It operates from 4.5V to 5.5V and is rated for –40°C to 125°C, targeting precision biasing in automotive sensor conditioning and industrial closed-loop control.
For engineers reviewing the LTC2631HTS8-HM8#TRMPBF datasheet, LTC2631HTS8-HM8#TRMPBF pinout, LTC2631HTS8-HM8#TRMPBF application, or LTC2631HTS8-HM8#TRMPBF equivalent, key selection criteria include guaranteed monotonicity over temperature, 0.5LSB DNL, 0.5LSB INL, low 1.8µA power-down current, and TSOT-23-8 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC2631HTS8-HM8#TRMPBF implements a resistor-divider-based DAC architecture with double-buffered input registers and internal reference switching logic controlled by the REF_SEL pin. Its I²C interface supports standard (100kHz) and fast (400kHz) modes with nine selectable slave addresses via CA0/CA1 pins.
It features a rail-to-rail output buffer with 0.09Ω DC output impedance, 1V/µs slew rate, and 3.7µs settling time to ±1LSB at 8-bit resolution under 5V supply. The integrated 4.096V reference provides ±10ppm/°C drift across the full –40°C to 125°C H-grade range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output levels with ±0.5LSB integral nonlinearity. |
| Full-Scale Output | 4.096V - matches common ADC reference standards and enables direct 12-bit-equivalent system scaling. |
| Reference Drift | ±10ppm/°C - ensures <±0.5mV total drift over –40°C to 125°C, critical for automotive calibration stability. |
| I²C Speed | 400kHz - supports real-time update rates up to ~10kSPS in closed-loop systems with minimal bus overhead. |
| Power-Down Current | 1.8µA max - enables ultra-low-power sleep states in battery-backed industrial controllers. |
| Supply Range | 4.5V to 5.5V - compatible with regulated 5V rails in automotive and industrial power domains. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and high-temp industrial environments. |
Pinout & Package
Package: 8-lead TSOT-23 (ThinSOT™), 2.9mm × 1.6mm × 0.8mm, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CA0 (Pin 1) | I²C address bit 0 | Selects one of three I²C slave addresses (GND/VCC/floating); enables multi-DAC bus sharing. |
| SCL (Pin 2) | I²C clock input | High-impedance CMOS input requiring external pull-up; supports 400kHz timing with ≤300ns fall time. |
| SDA (Pin 3) | I²C bidirectional data | Open-drain output during ACK; requires pull-up; handles bidirectional byte transfers per I²C spec. |
| GND (Pin 4) | Analog/digital ground | Single ground connection for both analog output and digital interface; no separate AGND/DGND. |
| VCC (Pin 5) | Positive supply | 4.5V–5.5V input; bypassing with 0.1µF ceramic capacitor essential for noise-sensitive DAC performance. |
| REF (Pin 6) | Reference I/O | Outputs 2.048V internal reference (H-grade) or accepts external 0–VCC reference; 0.5kΩ output impedance. |
| VOUT (Pin 7) | Analog voltage output | Rail-to-rail buffered output; drives ≥2kΩ load with <±0.5mV gain error; short-circuit protected (±28mA). |
| REF_SEL (Pin 8) | Reference mode select | Pulled to VCC at power-up for internal reference; GND selects external reference; software override possible post-boot. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed monotonicity | Ensures no code-to-code output reversal across –40°C to 125°C, eliminating control instability in feedback loops. |
| Double-buffered registers | Prevents partial updates during multi-byte writes; enables glitch-free output transitions in real-time systems. |
| Mid-scale power-on reset | Starts at 128/256 (50% of full scale), avoiding transient overdrive in amplifier biasing applications. |
| Low-glitch impulse (3.0nV·s) | Minimizes transient energy during code changes-critical for sensitive sensor excitation and optical control. |
| 10ppm/°C reference TC | Delivers <±0.5mV total reference drift over full temperature range-enables single-point calibration in automotive ECUs. |
Applications
| Automotive Sensor Biasing | Industrial Process Transmitters |
|---|---|
Use Scenario: Providing stable excitation voltage to RTD or bridge sensors in engine coolant temperature modules. IC Role / Device Role / Timing Role: Precision voltage source generating calibrated 2.048V or 4.096V bias; updated via I²C on CAN gateway command. Use Value: Eliminates need for external reference IC and op-amp buffer, reducing BOM count and layout area by 40%. | Use Scenario: Generating 4–20mA loop current setpoints in smart pressure transmitters using voltage-to-current conversion. IC Role / Device Role / Timing Role: High-stability 8-bit DAC setting reference voltage for current-sense amplifier; updated at 100Hz for PID loop response. Use Value: ±0.5LSB INL ensures <0.2% FSR current accuracy over temperature without recalibration. |
| Optical Module Control | Medical Infusion Pump Calibration |
Use Scenario: Controlling laser diode bias current in SFP+ optical transceivers via analog modulation path. IC Role / Device Role / Timing Role: Low-glitch DAC driving TIA reference node; updated synchronously with digital control loop at 1kHz. Use Value: 3.0nV·s glitch impulse prevents optical noise spikes that would degrade eye diagram integrity. | Use Scenario: Calibrating micro-stepping motor current in portable infusion pumps during factory trim. IC Role / Device Role / Timing Role: Factory-programmed DAC providing fixed offset correction to motor driver reference; nonvolatile settings retained across power cycles. Use Value: H-grade temp rating allows calibration at 85°C ambient, matching end-use thermal conditions for tighter tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-output DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4725A0T-E/CH | 12-bit, 2.7–5.5V supply, ±2LSB INL, no internal reference, SOT-23-6 package | Lacks integrated reference and automotive temp grade; suited for cost-sensitive consumer designs | Select when higher resolution is needed but external reference and lower temp grade are acceptable. |
| AD5620BRJZ-REEL7 | 12-bit, 2.7–5.5V, ±4LSB INL, 2ppm/°C reference, SOT-23-6, SPI interface | Different serial interface (SPI), tighter reference drift but larger INL; not drop-in I²C replacement | Choose for ultra-low-drift reference requirements where SPI is available and board layout permits rework. |
Compared with MCP4725A0T-E/CH and AD5620BRJZ-REEL7, the LTC2631HTS8-HM8#TRMPBF offers guaranteed monotonicity over temperature, integrated 4.096V reference, and I²C compatibility in an automotive-qualified package-making it optimal for space- and reliability-constrained embedded control.
Availability
LTC2631HTS8-HM8#TRMPBF is available at Aetrix Electronics and suitable for automotive sensor modules, industrial process transmitters, optical networking equipment, and medical calibration systems requiring stable component supply across extended temperature ranges.
Supply support for LTC2631HTS8-HM8#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 is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The LTC2631 product line delivers compact, temperature-stable voltage-output DACs with integrated references for precision control in harsh environments-designed specifically for automotive, industrial, and instrumentation applications demanding reliability and minimal external components.
FAQ
What is the full-scale output voltage of the LTC2631HTS8-HM8#TRMPBF?
The LTC2631HTS8-HM8#TRMPBF has a nominal full-scale output voltage of 4.096V when operating in internal reference mode. This value is derived from its integrated 2.048V reference and internal resistor divider, and remains stable within ±0.4% full-scale range over temperature and supply variations.
Does the LTC2631HTS8-HM8#TRMPBF support external reference operation?
Yes, the LTC2631HTS8-HM8#TRMPBF supports external reference operation. When the REF_SEL pin is pulled to GND at power-up, the device uses an externally supplied voltage (0V to VCC) at the REF pin to set the full-scale output, enabling flexible scaling for non-standard reference voltages or improved system-level accuracy.
What is the maximum I²C clock frequency supported by the LTC2631HTS8-HM8#TRMPBF?
The LTC2631HTS8-HM8#TRMPBF supports I²C clock frequencies up to 400kHz in fast-mode operation. Its timing parameters-including tLOW (1.3µs), tHIGH (0.6µs), and tHD(DAT) (0.9µs)-are fully compliant with the I²C fast-mode specification, enabling reliable communication in high-throughput embedded systems.
How does the power-on reset behavior work for the LTC2631HTS8-HM8#TRMPBF?
The LTC2631HTS8-HM8#TRMPBF resets to mid-scale (code 128 for 8-bit) upon power-up when the REF_SEL pin is tied to VCC. This behavior is hardware-defined and occurs before any I²C communication, ensuring a known, safe output state for biasing and control applications without software initialization delay.
Is the LTC2631HTS8-HM8#TRMPBF qualified for automotive applications?
Yes, the LTC2631HTS8-HM8#TRMPBF is qualified for automotive applications. It carries the H-grade temperature rating (–40°C to 125°C), meets AEC-Q200 stress test requirements, and is manufactured in an IATF 16949-certified facility-making it suitable for engine control units, body electronics, and ADAS sensor interfaces.
LTC2631HTS8-HM8#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:
- 8
- Number of D/A Converters:
- 1
- Settling Time:
- 3.7µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- I2C
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- INL/DNL (LSB):
- ±0.05, ±0.5 (Max)
- Architecture:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2631HTS8-HM8#TRMPBF FAQ
1.How can I place an order for LTC2631HTS8-HM8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2631HTS8-HM8#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 LTC2631HTS8-HM8#TRMPBF reliable?
The price and inventory of LTC2631HTS8-HM8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2631HTS8-HM8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2631HTS8-HM8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2631HTS8-HM8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2631HTS8-HM8#TRMPBF?
LTC2631HTS8-HM8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2631HTS8-HM8#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 LTC2631HTS8-HM8#TRMPBF?
For technical support, including LTC2631HTS8-HM8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2631HTS8-HM8#TRMPBF requirements.
6.How does Aetrix verify that LTC2631HTS8-HM8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2631HTS8-HM8#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 LTC2631HTS8-HM8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2631HTS8-HM8#TRMPBF?
All LTC2631HTS8-HM8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2631HTS8-HM8#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 LTC2631HTS8-HM8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2631HTS8-HM8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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