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Analog Devices Inc. LTC2626CDD#TRPBF
- Part No.:
- LTC2626CDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC2626CDD#TRPBF.pdf
- Description:
- IC DAC 12BIT V-OUT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,853
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Product details
Overview
LTC2626CDD#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit rail-to-rail voltage-output DAC with I²C interface, operating from 2.7V to 5.5V supply. It delivers ±15mA output drive, guarantees monotonicity over temperature, features double-buffered latches, and includes an asynchronous LDAC pin for precise timing control - used in precision analog control loops requiring stable, low-glitch DC bias generation.
For engineers reviewing the LTC2626CDD#TRPBF datasheet, LTC2626CDD#TRPBF pinout, LTC2626CDD#TRPBF application, or LTC2626CDD#TRPBF equivalent, this page provides verified specifications, package details, real-world use cases, and validated alternative options for industrial DAC selection and BOM optimization.
Technical Context
The LTC2626CDD#TRPBF implements a 12-bit unbuffered DAC core with integrated rail-to-rail output buffer, supporting both standard (100kHz) and fast-mode (400kHz) I²C communication. Its internal architecture includes separate input and DAC registers, enabling double-buffered updates to prevent output glitches during data loading.
Power-on reset defaults the output to zero scale (not mid-scale), and the device supports 27 selectable I²C slave addresses via CA0–CA2 pins. The LDAC pin allows hardware-synchronized DAC register updates independent of I²C transaction completion, critical for deterministic timing in closed-loop systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - defines smallest output step as 1/4096 of VREF, enabling 2.44mV steps with 10V reference. |
| Differential Nonlinearity | ±0.5 LSB - ensures monotonic output across full code range, eliminating missing codes in control applications. |
| Settling Time (±1 LSB) | 7 µs - enables update rates up to ~140 kHz for dynamic bias adjustment without settling error. |
| Output Drive | ±15 mA (min) - directly drives 667 Ω loads at 10V swing, eliminating need for external op-amp buffers in many cases. |
| Supply Current | 270 µA at 3V - supports battery-powered instrumentation with low quiescent power. |
| Power-Down Current | 1 µA (max) - reduces system standby power while preserving register state for instant wake-up. |
| I²C Clock Rate | 400 kHz - supports high-throughput configuration in multi-DAC systems without bus contention delays. |
Pinout & Package
Package: 10-lead (3mm × 3mm) DFN with exposed pad (Pin 11 = GND). RoHS-compliant, lead-free finish. Thermal resistance θJA = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LDAC (10) | Asynchronous DAC update enable | Falling edge triggers immediate transfer from input register to DAC register - essential for synchronized multi-channel updates. |
| VOUT (7) | Analog voltage output | Rail-to-rail output (0V to VREF); capable of sourcing/sinking ±15 mA; high-impedance in power-down mode. |
| REF (6) | Reference voltage input | Accepts 0V to VCC; sets full-scale output range; input impedance >88 kΩ; supports external precision references. |
| GND (8) | Analog ground | Primary analog return path; must be connected to low-noise system ground plane; exposed pad (Pin 11) is tied to this node. |
| VCC (9) | Positive supply | 2.7V–5.5V operation; powers internal logic, reference buffer, and output amplifier; decoupling required within 1 cm. |
| SCL (3) | I²C clock input | High-impedance CMOS input; requires external pull-up; supports 400 kHz fast-mode timing per I²C spec. |
| SDA (2) | I²C bidirectional data | Open-drain output with internal weak pull-down; requires external pull-up; acknowledges writes with active-low pulse. |
| CA0–CA2 (4,5,1) | I²C address select inputs | Each configurable as VCC/GND/floating → 27 unique slave addresses; capacitance limited to 10 pF per pin. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-scale power-on reset | Outputs rise <10 mV above 0 V during VCC ramp-up - prevents disruptive transients in sensitive downstream circuitry. |
| Double-buffered data latches | Enables glitch-free updates: new data loaded into input register while DAC continues outputting prior value until LDAC triggers. |
| 27 I²C address options | Eliminates address conflicts in multi-DAC systems (e.g., sensor calibration boards with 8+ channels) without external address translators. |
| Rail-to-rail output with ±15 mA drive | Directly interfaces with MOSFET gates, op-amp inputs, or LED drivers without level-shifting or buffering stages. |
| Low 1 µA power-down current | Reduces total system standby power in portable test equipment where DACs are idle >90% of time. |
Applications
| Industrial Process Control | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Setting precise DC bias voltages for analog front-end conditioning circuits in PLC I/O modules. IC Role / Device Role / Timing Role: Voltage-output DAC generating stable, calibrated reference levels for ADC driver stages and sensor excitation. Use Value: Guaranteed 12-bit monotonicity and ±0.5 LSB DNL ensure repeatable sensor calibration across temperature, reducing field recalibration frequency. |
Use Scenario: Generating programmable stimulus voltages for parametric testing of analog ICs on production test handlers. IC Role / Device Role / Timing Role: Fast-settling (7 µs), I²C-configurable voltage source synchronized via LDAC to tester timing signals. Use Value: 400 kHz I²C interface and double-buffering allow rapid reconfiguration between test vectors without output glitches affecting measurement integrity. |
| Portable Instrumentation | Laser Diode Bias Control |
|
Use Scenario: Providing adjustable gain-setting voltages for low-power handheld multimeters and oscilloscope front-ends. IC Role / Device Role / Timing Role: Low-quiescent (270 µA @ 3V), rail-to-rail DAC supplying bias to programmable-gain amplifiers and filter tuning networks. Use Value: 2.7V minimum supply and 1 µA power-down current extend battery life in Class II portable instruments without sacrificing resolution. |
Use Scenario: Controlling constant-current laser diode drivers in fiber-optic transceivers and medical laser systems. IC Role / Device Role / Timing Role: High-drive (±15 mA), low-glitch DAC setting reference voltage for current-sense amplifier feedback loops. Use Value: Output short-circuit current of 34 mA (typ) at 5.5V ensures robustness against transient load faults common in laser driver startup sequences. |
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, single-supply (2.7–5.5V), I²C interface, but only ±2 mA output drive and no LDAC pin. | Lacks hardware-synchronized update capability and cannot drive heavy loads directly - requires external op-amp buffer for >1 kΩ loads. | Select when cost sensitivity outweighs timing determinism and output drive requirements. |
| AD5620BRMZ-1 | 12-bit, SPI interface (not I²C), 2.7–5.5V, ±10 mA drive, includes power-on reset to zero scale. | Requires SPI host controller instead of I²C; lacks CA0–CA2 address flexibility; smaller 8-lead MSOP package. | Choose when existing design uses SPI infrastructure and board space is constrained. |
Compared with MCP4725A0T-E/CH and AD5620BRMZ-1, the LTC2626CDD#TRPBF uniquely combines I²C configurability, hardware LDAC synchronization, and ±15 mA rail-to-rail drive in a compact DFN - making it optimal for space-constrained, multi-DAC industrial control nodes demanding deterministic timing and direct load driving.
Availability
LTC2626CDD#TRPBF is available at Aetrix Electronics and suitable for industrial process control, automated test equipment, and portable instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2626CDD#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2626CDD#TRPBF belongs to ADI's precision DAC product line, designed specifically for applications demanding low noise, guaranteed monotonicity, and robust I²C-based configuration in harsh industrial environments.
FAQ
What is the power-on behavior of the LTC2626CDD#TRPBF?
The LTC2626CDD#TRPBF performs a power-on reset to zero scale: its VOUT rises less than 10 mV above ground during VCC ramp-up and remains at 0 V until the first valid I²C write-and-update command is executed. This behavior ensures safe initialization in systems where downstream circuitry is powered before the DAC.
Does the LTC2626CDD#TRPBF support mid-scale power-on reset?
No - the LTC2626CDD#TRPBF resets to zero scale at power-on. Mid-scale reset is implemented only in the -1 variant (e.g., LTC2626CDD-1#TRPBF). Using the standard LTC2626CDD#TRPBF avoids unintended mid-scale output that could disrupt bias-sensitive analog stages during startup.
Can the LTC2626CDD#TRPBF drive a 500 Ω load rail-to-rail?
Yes - the LTC2626CDD#TRPBF guarantees ±15 mA output drive at 5V supply, enabling rail-to-rail operation into 333 Ω loads (5V/15 mA). At 500 Ω, full 0–5V swing is achievable with margin; performance remains within datasheet specs for load regulation (≤0.125 LSB/mA at 5V).
How does the LDAC pin function in the LTC2626CDD#TRPBF?
The LDAC pin on the LTC2626CDD#TRPBF provides hardware-synchronized DAC register updates: after three bytes are written via I²C, a falling edge on LDAC immediately transfers data from the input register to the DAC register. This decouples data loading from output update timing - critical for synchronized multi-DAC systems.
What is the maximum capacitive load the LTC2626CDD#TRPBF can drive on VOUT?
The LTC2626CDD#TRPBF is characterized to drive up to 1000 pF while maintaining specified settling time (7 µs to ±1 LSB) and stability. For loads exceeding 1000 pF, external isolation (e.g., unity-gain buffer) is recommended to prevent peaking or extended settling due to phase margin degradation.
LTC2626CDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 1
- Settling Time:
- 7µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- I2C
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- INL/DNL (LSB):
- ±1, ±0.5 (Max)
- Architecture:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2626CDD#TRPBF FAQ
1.How can I place an order for LTC2626CDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2626CDD#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 LTC2626CDD#TRPBF reliable?
The price and inventory of LTC2626CDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2626CDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2626CDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2626CDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2626CDD#TRPBF?
LTC2626CDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2626CDD#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 LTC2626CDD#TRPBF?
For technical support, including LTC2626CDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2626CDD#TRPBF requirements.
6.How does Aetrix verify that LTC2626CDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2626CDD#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 LTC2626CDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2626CDD#TRPBF?
All LTC2626CDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2626CDD#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 LTC2626CDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2626CDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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