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Analog Devices Inc. LTC2633HTS8-HZ8#TRMPBF
- Part No.:
- LTC2633HTS8-HZ8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2633HTS8-HZ8#TRMPBF.pdf
- Description:
- IC DAC 8BIT V-OUT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,974
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Product details
Overview
LTC2633HTS8-HZ8#TRMPBF from Analog Devices is a dual 8-bit I²C voltage-output DAC with integrated 10ppm/°C 2.048V reference, rail-to-rail output buffers, and guaranteed monotonicity over –40°C to 125°C. It operates from 4.5V to 5.5V, delivers ±0.5LSB DNL and ±0.5LSB INL (typ), and features power-on reset to zero-scale in internal reference mode - used in automotive power supply margining and industrial sensor calibration.
For engineers reviewing the LTC2633HTS8-HZ8#TRMPBF datasheet, LTC2633HTS8-HZ8#TRMPBF pinout, LTC2633HTS8-HZ8#TRMPBF application, or LTC2633HTS8-HZ8#TRMPBF equivalent, key selection criteria include its H-grade automotive temperature range, TSOT-23-8 package, I²C fast-mode (400kHz) timing compliance, zero-scale POR behavior, and 4.096V full-scale output with internal reference.
Technical Context
The LTC2633HTS8-HZ8#TRMPBF implements two independent 8-bit DAC channels sharing a single I²C interface and internal reference switch. Its control logic decodes CA0 address bit and SCL/SDA commands to load double-buffered registers, enabling synchronous updates. Power-on reset circuitry forces both DACs to zero-scale when VCC rises above threshold.
It uses an internal bandgap reference (2.048V) that feeds a precision scaling amplifier to generate 4.096V full-scale output. The rail-to-rail output buffers drive loads up to ±10mA with 0.09Ω DC impedance and support capacitive loads up to 500pF, while maintaining 4.7µs settling time to ±1LSB at VCC = 5V.
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 mode) - enables precise 12-bit-equivalent system resolution when paired with gain stages |
| Reference Tempco | 10ppm/°C - ensures ≤±0.5mV drift over –40°C to 125°C for stable calibration points |
| I²C Clock Rate | 400kHz (fast mode) - supports high-throughput configuration in real-time control loops |
| Supply Range | 4.5V to 5.5V - compatible with automotive 5V rails and industrial 5V supplies without LDO overhead |
| Settling Time | 4.7µs to ±1LSB - meets timing requirements for closed-loop feedback update rates up to 200kHz |
| Operating Temp | –40°C to 125°C (H-grade) - qualified for under-hood automotive and factory-floor 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 |
|---|---|---|
| SCL | I²C Serial Clock Input | Rising-edge synchronized data transfer; requires external pull-up to VCC; supports 400kHz fast mode |
| CA0 | I²C Address Bit 0 | Selects one of three slave addresses (GND/VCC/floating); determines bus arbitration in multi-DAC systems |
| REF | Reference Voltage Terminal | Outputs 2.048V internal reference (half-scale); bypassable with 0.1µF capacitor; not loaded beyond 10µA |
| GND | Analog/Digital Ground | Common return for DAC outputs, reference, and digital I/O; must be low-impedance for noise immunity |
| VOUTA / VOUTB | Dual Analog Outputs | Rail-to-rail buffered voltage sources; each drives ±10mA; 0.09Ω output impedance minimizes load-induced gain error |
| VCC | Positive Supply | 4.5V–5.5V input; requires local 0.1µF ceramic bypass to GND adjacent to pin |
| SDA | I²C Bidirectional Data | Open-drain output during ACK; high-impedance input during data reception; pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Zero-scale power-on reset | Ensures known safe output state at startup - critical for fail-safe power margining and actuator initialization |
| Double-buffered data latches | Enables simultaneous DAC A/B updates without glitching - essential for coordinated multi-channel control |
| Guaranteed monotonicity | Prevents output reversal across all codes and temperatures - required for closed-loop stability in PID systems |
| Low 0.4mA supply current | Reduces thermal load and extends battery life in portable test equipment and remote sensors |
| TSOT-23-8 package | Enables high-density PCB layouts in space-constrained automotive ECUs and industrial PLC modules |
Applications
| Automotive Power Margining | Industrial Sensor Calibration |
|---|---|
Use Scenario: Adjusting microcontroller VDD supply voltage during ECU validation to verify functional limits under brown-out conditions. IC Role / Device Role / Timing Role: Dual DAC generates precise 0–4.096V reference voltages for programmable LDO setpoints; zero-scale POR ensures safe default on cold start. Use Value: Eliminates manual potentiometer adjustment; enables automated margin testing sequences via I²C host controller. | Use Scenario: Providing calibrated excitation voltages to strain-gauge bridges in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: LTC2633HTS8-HZ8#TRMPBF acts as ratiometric reference source; internal 10ppm/°C reference maintains bridge bias accuracy across ambient temperature swings. Use Value: Reduces calibration drift to <±0.05% FS over –40°C to 125°C, meeting ISO 5167 transmitter specifications. |
| Medical Infusion Pump Control | Programmable Current Source Bias |
Use Scenario: Setting motor driver reference voltages in battery-powered infusion pumps to regulate flow rate with high repeatability. IC Role / Device Role / Timing Role: Dual 8-bit DAC configures two independent current-limit thresholds for stepper motor phase drivers; H-grade temp range supports sterilization cycles. Use Value: Achieves ±1% flow accuracy over full operating range without external op-amps or trimming components. | Use Scenario: Generating bias voltages for laser diode drivers in optical communications modules requiring stable optical power output. IC Role / Device Role / Timing Role: LTC2633HTS8-HZ8#TRMPBF provides matched, low-noise 0–4.096V references to two independent transconductance amplifiers. Use Value: Minimizes channel-to-channel crosstalk (<6.7nV·s) and ensures consistent laser bias across temperature and aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 8-bit DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4728-E/UN | Quad 12-bit DAC, 2.7–5.5V supply, no internal reference, ±2LSB INL (12-bit) | Higher resolution but lacks integrated reference and automotive temp grade | Select when quad channel count outweighs need for H-grade reliability and reference integration |
| AD5663RBRMZ-5 | Dual 16-bit DAC, 2.7–5.5V, internal 2.5V ref (2ppm/°C), ±4LSB INL (16-bit) | Superior accuracy and lower tempco, but larger MSOP-10 package and higher cost | Choose for metrology-grade calibration where 16-bit resolution and 2ppm/°C stability justify size/cost trade-off |
Compared with MCP4728-E/UN and AD5663RBRMZ-5, the LTC2633HTS8-HZ8#TRMPBF offers optimal balance of automotive qualification, integrated 4.096V reference, compact TSOT-23-8 footprint, and deterministic zero-scale power-on behavior - making it ideal for safety-critical margining and embedded calibration where layout area and startup predictability are constrained.
Availability
LTC2633HTS8-HZ8#TRMPBF is available at Aetrix Electronics and suitable for automotive power margining, industrial sensor calibration, medical infusion pump control, and programmable current source bias applications requiring stable component supply across extended temperature ranges.
Supply support for LTC2633HTS8-HZ8#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 LTC2633 product line delivers precision dual DACs with integrated references and robust I²C interfaces - designed specifically for embedded calibration, power control, and sensor excitation in harsh-temperature environments.
FAQ
What is the full-scale output voltage of the LTC2633HTS8-HZ8#TRMPBF in internal reference mode?
The LTC2633HTS8-HZ8#TRMPBF delivers a 4.096V full-scale output voltage when using its internal reference. This is achieved by scaling the 2.048V internal bandgap reference (available at the REF pin) by a factor of two within the DAC architecture. The specification is guaranteed over the full –40°C to 125°C operating range and requires no external components.
Does the LTC2633HTS8-HZ8#TRMPBF support external reference operation?
Yes, the LTC2633HTS8-HZ8#TRMPBF supports external reference operation. When configured for external reference mode, the REF pin becomes an input accepting 1V to VCC, and the DAC full-scale output equals the applied reference voltage. However, the specific part number LTC2633HTS8-HZ8#TRMPBF is factory-configured for internal reference use with zero-scale power-on reset - external reference functionality requires selecting an "X" or "I" suffix variant.
What is the power-on reset behavior of the LTC2633HTS8-HZ8#TRMPBF?
The LTC2633HTS8-HZ8#TRMPBF performs a power-on reset to zero-scale on both DAC channels when VCC rises above the threshold. This behavior is fixed by the "Z" suffix in the part number and is independent of reference mode. It ensures a known, safe output state at system startup - critical for applications like power supply margining where unintended voltage injection must be avoided.
Can the LTC2633HTS8-HZ8#TRMPBF operate from a 3.3V supply?
No, the LTC2633HTS8-HZ8#TRMPBF cannot operate from a 3.3V supply. As an "H"-grade part with 4.096V full-scale output, it requires a minimum supply voltage of 4.5V per the Absolute Maximum Ratings and Electrical Characteristics tables. Attempting operation below 4.5V may result in undefined reference behavior, reduced output drive capability, or failure to meet specified INL/DNL performance.
What is the maximum capacitive load the LTC2633HTS8-HZ8#TRMPBF outputs can drive while maintaining specified settling time?
The LTC2633HTS8-HZ8#TRMPBF outputs are characterized to drive up to 500pF while maintaining the specified 4.7µs settling time to ±1LSB at VCC = 5V. This value is confirmed in the AC Performance section of the datasheet. Driving larger capacitances will increase settling time and may introduce overshoot; for loads exceeding 500pF, an external buffer amplifier is recommended to preserve dynamic performance.
LTC2633HTS8-HZ8#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:
- 2
- 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:
- -
LTC2633HTS8-HZ8#TRMPBF FAQ
1.How can I place an order for LTC2633HTS8-HZ8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2633HTS8-HZ8#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 LTC2633HTS8-HZ8#TRMPBF reliable?
The price and inventory of LTC2633HTS8-HZ8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2633HTS8-HZ8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2633HTS8-HZ8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2633HTS8-HZ8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2633HTS8-HZ8#TRMPBF?
LTC2633HTS8-HZ8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2633HTS8-HZ8#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 LTC2633HTS8-HZ8#TRMPBF?
For technical support, including LTC2633HTS8-HZ8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2633HTS8-HZ8#TRMPBF requirements.
6.How does Aetrix verify that LTC2633HTS8-HZ8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2633HTS8-HZ8#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 LTC2633HTS8-HZ8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2633HTS8-HZ8#TRMPBF?
All LTC2633HTS8-HZ8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2633HTS8-HZ8#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 LTC2633HTS8-HZ8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2633HTS8-HZ8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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