My Inquiry
My Account
Analog Devices Inc. LTC2631CTS8-HM8#TRMPBF
- Part No.:
- LTC2631CTS8-HM8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2631CTS8-HM8#TRMPBF.pdf
- Description:
- IC DAC 8BIT V-OUT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,914
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2631CTS8-HM8#TRMPBF from Analog Devices is a single 8-bit voltage-output DAC with integrated 4.096V ±10ppm/°C reference, rail-to-rail output buffer, and I²C-compatible 2-wire interface operating up to 400kHz. It delivers ±0.5LSB DNL, 3.7µs settling time (±1LSB at 8-bit), and operates from 4.5V–5.5V supply. Used in precision analog control loops within automotive sensor calibration modules.
For engineers reviewing the LTC2631CTS8-HM8#TRMPBF datasheet, LTC2631CTS8-HM8#TRMPBF pinout, LTC2631CTS8-HM8#TRMPBF application, or LTC2631CTS8-HM8#TRMPBF equivalent, key selection criteria include internal 4.096V reference accuracy, H-grade (–40°C to 125°C) operation, mid-scale power-on reset, TSOT-23-8 package footprint, and guaranteed monotonicity across temperature.
Technical Context
The LTC2631CTS8-HM8#TRMPBF implements a resistor-divider-based DAC architecture with double-buffered input registers and an integrated bandgap reference. Its REF_SEL pin configures default reference mode at power-up, while the 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 amplifier with 1V/µs slew rate, low 0.7mVP-P (0.1Hz–200kHz) output noise when using internal reference, and power-down current of ≤1.8µA (H-grade). The device guarantees monotonicity over its full –40°C to 125°C operating range and includes a power-on reset circuit that defaults to mid-scale code (0x80 for 8-bit).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output levels with ±0.5LSB differential nonlinearity guarantee |
| Full-Scale Output | 4.096V (internal reference) - enables precise 12-bit-equivalent scaling in 16-bit systems without external reference |
| Reference Tempco | ±10ppm/°C - ensures <±0.5mV drift over –40°C to 125°C, critical for automotive under-hood applications |
| Settling Time | 3.7µs to ±1LSB - supports update rates >250kSPS in closed-loop feedback control |
| I²C Clock Rate | Up to 400kHz - allows high-speed configuration and dynamic updates without MCU timing bottlenecks |
| Supply Range | 4.5V to 5.5V - matches automotive 5V rail tolerances and eliminates need for LDO in 5V systems |
| Operating Temp | –40°C to 125°C (H-grade) - qualified for engine control units, transmission controllers, and ADAS sensor interfaces |
Pinout & Package
8-lead TSOT-23 (ThinSOT™) package: 2.9mm × 1.6mm × 0.8mm profile, exposed pad optional, JEDEC MO-220 compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CA0 (Pin 1) | I²C address bit 0 | Configures one of three logic states (VCC/GND/floating) to select slave address; enables multi-DAC bus sharing |
| SCL (Pin 2) | I²C serial clock input | High-impedance CMOS input requiring external pull-up; defines data sampling edge (rising) and timing compliance |
| SDA (Pin 3) | I²C bidirectional data line | Open-drain N-channel output during ACK; requires pull-up; supports multi-master arbitration and clock stretching |
| GND (Pin 4) | Analog/digital ground reference | Common return path for VOUT, REF, and digital logic; must be low-impedance to minimize PSR degradation |
| VCC (Pin 5) | Positive supply input | 4.5V–5.5V only; bypassing with 0.1µF ceramic capacitor essential for noise immunity and reference stability |
| REF (Pin 6) | Reference input/output | Outputs 2.048V internal reference (±10ppm/°C); accepts external 0–VCC input to set full-scale; requires 0.33µF bypass |
| VOUT (Pin 7) | Analog voltage output | Rail-to-rail buffered output capable of sourcing/sinking ±28mA; designed for direct connection to op-amp inputs or FET gates |
| REF_SEL (Pin 8) | Power-on reference mode select | Tie to VCC for internal reference default, GND for external reference default; software override possible post-power-up |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4.096V reference | Eliminates external reference IC and associated layout area; ±10ppm/°C tempco meets AEC-Q100 Grade 0 requirements |
| Mid-scale power-on reset | Starts at 0x80 (128/256) - prevents transient output spikes in motor drive or valve control circuits during cold start |
| H-grade temperature range | –40°C to 125°C operation - validated for placement near ECUs, inverters, and under-hood sensors without derating |
| Guaranteed monotonicity | No code-to-code output reversal across full temperature and supply range - essential for closed-loop stability in PID controllers |
| Low 1.8µA power-down current | Enables battery-backed sleep modes in telematics and ADAS modules where quiescent current impacts system runtime |
Applications
| Automotive Engine Control | Industrial Sensor Calibration |
|---|---|
Use Scenario: Generating precise bias voltages for wideband oxygen sensor (UEGO) signal conditioning in ECU subsystems. IC Role / Device Role / Timing Role: Voltage-output DAC providing stable 0–4.096V reference for transimpedance amplifier offset nulling. Use Value: ±0.5LSB DNL and ±10ppm/°C reference ensure <±2mV total error over engine temperature range, enabling accurate air-fuel ratio calculation. |
Use Scenario: Calibrating factory-set gain/offset in industrial pressure transmitters before deployment. IC Role / Device Role / Timing Role: Precision 8-bit DAC generating known test voltages applied to sensor front-end ADC reference paths. Use Value: 3.7µs settling time allows full calibration sequence completion in <100µs per point, accelerating production test throughput. |
| Optical Transceiver Bias Control | Medical Infusion Pump Actuator |
Use Scenario: Setting laser diode bias current in SFP+ modules via current-source DAC interface. IC Role / Device Role / Timing Role: Voltage-output DAC driving external current mirror; REF pin supplies stable 2.048V to current-set resistor. Use Value: Internal 4.096V reference and rail-to-rail output enable 0–5V control range matching common op-amp supply rails in optical modules. |
Use Scenario: Controlling stepper motor microstepping current in portable infusion pumps with battery-powered MCU. IC Role / Device Role / Timing Role: Low-quiescent DAC delivering analog command voltage to motor driver IC's current-sense amplifier. Use Value: 1.8µA power-down current extends battery life between doses; H-grade rating supports operation in clinical environments with ambient temperature variation. |
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 integrated reference, SOT-23-6 | Lacks internal reference and H-grade temp range; requires external 2.048V ref for 4.096V full-scale | Select when higher resolution is needed and external reference is acceptable; not suitable for automotive under-hood use |
| AD5620BRJZ-REEL7 | 12-bit, 2.7–5.5V, ±4LSB INL, 2.5V internal ref (±20ppm/°C), SOT-23-6 | Higher tempco (±20ppm/°C), lower accuracy, no mid-scale POR option, smaller package limits thermal mass | Choose for cost-sensitive industrial controls where ±5mV reference drift is acceptable; verify thermal performance at 125°C |
Compared with MCP4725A0T-E/CH and AD5620BRJZ-REEL7, the LTC2631CTS8-HM8#TRMPBF provides tighter reference stability (±10ppm/°C vs ±20ppm/°C), guaranteed H-grade operation, and mid-scale power-on reset-making it uniquely suited for automotive and high-reliability embedded control where deterministic startup behavior and thermal stability are mandatory.
Availability
LTC2631CTS8-HM8#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor calibration fixtures, and optical transceiver bias modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2631CTS8-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2631 series was designed specifically for space-constrained, high-accuracy analog output applications requiring integrated references and robust I²C control-targeting automotive subsystems, portable instrumentation, and factory automation endpoints.
FAQ
What is the full-scale output voltage of the LTC2631CTS8-HM8#TRMPBF when using the internal reference?
The LTC2631CTS8-HM8#TRMPBF delivers a nominal 4.096V full-scale output voltage when operating in internal reference mode. This value is derived from the on-chip 2.048V reference buffered and doubled internally, with ±0.08% full-scale error and ±10ppm/°C temperature coefficient over –40°C to 125°C.
Does the LTC2631CTS8-HM8#TRMPBF support external reference operation?
Yes, the LTC2631CTS8-HM8#TRMPBF supports external reference mode. When REF_SEL is tied to GND at power-up, the REF pin becomes a high-impedance input (160–220kΩ) accepting 0V to VCC, allowing full-scale output to be set by an external voltage source. The device maintains ±0.5LSB DNL and monotonicity in this mode.
What is the power-on reset behavior of the LTC2631CTS8-HM8#TRMPBF?
The LTC2631CTS8-HM8#TRMPBF resets to mid-scale (0x80 for 8-bit, i.e., 2.048V output) upon power-up when REF_SEL is tied to VCC. This behavior prevents disruptive output transients in sensitive analog circuits such as motor drivers or sensor bias networks during system startup.
Can the LTC2631CTS8-HM8#TRMPBF operate from a 3.3V supply?
No, the LTC2631CTS8-HM8#TRMPBF requires a minimum 4.5V supply for specified performance because it uses the LTC2631-H variant architecture optimized for 4.096V internal reference generation. Operation below 4.5V may result in undefined reference output, reduced output swing, or failure to meet DNL/INL specifications.
What package type and dimensions does the LTC2631CTS8-HM8#TRMPBF use?
The LTC2631CTS8-HM8#TRMPBF uses an 8-lead TSOT-23 (ThinSOT™) package measuring 2.9mm × 1.6mm × 0.8mm with standard JEDEC MO-220 outline. Pin pitch is 0.65mm; the package includes an exposed thermal pad (optional for soldering) and is RoHS-compliant and lead-free.
LTC2631CTS8-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:
- 0°C ~ 70°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2631CTS8-HM8#TRMPBF FAQ
1.How can I place an order for LTC2631CTS8-HM8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2631CTS8-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 LTC2631CTS8-HM8#TRMPBF reliable?
The price and inventory of LTC2631CTS8-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 LTC2631CTS8-HM8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2631CTS8-HM8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2631CTS8-HM8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2631CTS8-HM8#TRMPBF?
LTC2631CTS8-HM8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2631CTS8-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 LTC2631CTS8-HM8#TRMPBF?
For technical support, including LTC2631CTS8-HM8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2631CTS8-HM8#TRMPBF requirements.
6.How does Aetrix verify that LTC2631CTS8-HM8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2631CTS8-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 LTC2631CTS8-HM8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2631CTS8-HM8#TRMPBF?
All LTC2631CTS8-HM8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2631CTS8-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 LTC2631CTS8-HM8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2631CTS8-HM8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2631CTS8-HM8#TRMPBF 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
