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Analog Devices Inc. LTC6993CDCB-3#TRPBF
- Part No.:
- LTC6993CDCB-3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6993CDCB-3#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
LTC6993CDCB-3#TRPBF from Analog Devices is a falling-edge-triggered, non-retriggerable monostable multivibrator (one-shot) with programmable pulse width from 1µs to 33.6 seconds. It uses an internal master oscillator and 8-step programmable divider (NDIV = 1 to 2²¹) set via resistor-divided DIV pin voltage, and operates from 2.25V to 5.5V supply. Its CMOS output sources/sinks 20mA and targets precision timing in envelope detection and missing-pulse monitoring.
For engineers reviewing the LTC6993CDCB-3#TRPBF datasheet, LTC6993CDCB-3#TRPBF pinout, LTC6993CDCB-3#TRPBF application, or LTC6993CDCB-3#TRPBF equivalent, key selection criteria include confirmed falling-edge trigger polarity, non-retriggerable behavior, ±2.3% pulse width accuracy for widths >512µs, 70µA supply current at 10µs pulse width, and DFN-6 (2mm × 3mm) package compatibility with high-vibration environments.
Technical Context
The LTC6993CDCB-3#TRPBF implements a digitally controlled analog timing architecture: a feedback-regulated 1V SET pin enables precise ISET current programming (1.25µA–20µA), determining tMASTER = 1µs × RSET/50kΩ; the 4-bit DIV pin A/D converter selects both NDIV (1, 8, 64, ..., 2²¹) and output polarity (POL bit). Its internal digital filter rejects noise on the DIV input, and hysteresis on TRIG ensures robust edge detection across supply voltages.
Unlike generic timers, it integrates a halt oscillator function that stops timing when ISET drops below ~500nA, enabling ultra-low-power idle states. Pulse width drift is specified at ±0.006%/°C for NDIV ≥ 512 and ±0.008%/°C for NDIV ≤ 64, with supply voltage sensitivity as low as –0.1% over V+ = 2.25V–4.5V for long pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse width range | 1µs to 33.6 seconds - supports both microsecond-level event capture and multi-second watchdog timeouts |
| Trigger polarity | Falling-edge only - requires negative-going signal on TRIG to initiate output pulse |
| Retrigger capability | Non-retriggerable - ignores subsequent triggers until current pulse completes and re-arms |
| Pulse width accuracy | ±2.3% for tOUT > 512µs - enables reliable timing without external calibration in industrial control loops |
| Supply current | 70µA at 10µs pulse width (V+ = 2.25V) - minimizes battery drain in portable equipment |
| Operating temperature | 0°C to 70°C - validated for commercial-grade embedded systems with ambient thermal cycling |
| Output drive | CMOS, ±20mA - directly interfaces with logic inputs, LEDs, or small solenoids without buffer stages |
Pinout & Package
Package: 6-Lead (2mm × 3mm) Plastic DFN (DCB), exposed pad connected to GND. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Falling-edge trigger input | Initiates output pulse on voltage transition from high to low; includes hysteresis proportional to V+ |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance return path for all internal circuits; exposed pad must be connected to PCB ground plane |
| SET (Pin 3) | Pulse width programming node | Sinks ISET current (1.25µA–20µA); VSET regulated to 1.00V ±30mV for stable oscillator frequency |
| DIV (Pin 4) | Divider ratio & polarity control | 4-bit A/D input accepting VDIV = (DIVCODE + 0.5)/16 × V+ to select NDIV and output polarity (POL) |
| V+ (Pin 5) | Power supply input | 2.25V–5.5V single supply; requires 0.1µF ceramic bypass capacitor directly to GND |
| OUT (Pin 6) | CMOS output driver | Swings rail-to-rail (GND to V+); 30Ω typical output impedance; limited to ±20mA sink/source |
Key Features
| Feature | Design Value |
|---|---|
| Falling-edge trigger with hysteresis | Enables reliable timing in noisy environments where rising edges may be corrupted; threshold scales with V+ |
| Programmable NDIV up to 2²¹ | Extends minimum 1µs base pulse to 33.6s without external counters or cascaded timers |
| Regulated 1V SET pin | Eliminates VSET drift impact on pulse width when using RSET; accuracy depends only on resistor tolerance |
| Non-retriggerable operation | Guarantees fixed-duration output regardless of trigger frequency - critical for safety-critical timeout functions |
| –55°C to 125°C extended temp option | MP-grade variants exist; this CDCB-3 version is rated 0°C–70°C but shares same die and DFN package robustness |
Applications
| Envelope Detection | Missing Pulse Detection |
|---|---|
Use Scenario: Extracting amplitude envelope from high-frequency carrier signals (e.g., 80kHz ultrasonic burst). IC Role / Device Role / Timing Role: One-shot configured with short tOUT (e.g., 16µs) triggered by carrier zero-crossing to gate envelope sampling window. Use Value: Achieves <1µs jitter and ±2.3% width accuracy, enabling precise envelope reconstruction without ADC oversampling. | Use Scenario: Monitoring periodic sensor pulses (e.g., crankshaft position) where absence indicates fault. IC Role / Device Role / Timing Role: Non-retriggerable one-shot with tOUT slightly longer than maximum expected inter-pulse interval. Use Value: Output stays high only if no pulse arrives within timeout window - clean digital fault flag with no false triggers from noise. |
| Watchdog Timer | High-Vibration Timing |
Use Scenario: System-level reset supervision in microcontroller-based controllers. IC Role / Device Role / Timing Role: Falling-edge triggered by MCU's periodic "alive" pulse; non-retriggerable ensures reset fires if MCU hangs mid-pulse. Use Value: 33.6s max pulse width covers long boot sequences; 70µA idle current extends battery life in remote nodes. | Use Scenario: Timing in automotive engine control modules subject to mechanical shock and thermal cycling. IC Role / Device Role / Timing Role: Generates stable delay windows for ignition timing or valve actuation sequencing. Use Value: ±0.006%/°C drift and AEC-Q100-qualified variants ensure timing integrity under 125°C junction temperatures and vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993IDCB-3#TRPBF | Same functionality and pinout; rated –40°C to 85°C operating range vs. 0°C to 70°C | Required for industrial temperature range deployments; identical electrical specs and timing performance | Select when board-level ambient exceeds 70°C or requires extended qualification coverage |
| LTC6993HDCB-3#TRPBF | Same functionality and pinout; rated –40°C to 125°C, higher temp grade with validated reliability data | Needed for under-hood automotive or high-temp industrial enclosures; shares same DFN-6 footprint | Choose for AEC-Q100-compliant designs or sustained operation above 85°C ambient |
Compared with LTC6993CDCB-3#TRPBF, the IDCB-3 and HDCB-3 variants offer identical timing accuracy, power consumption, and pinout but extend guaranteed operation to –40°C and –40°C/125°C respectively - enabling drop-in replacement where thermal margins require broader qualification without layout changes.
Availability
LTC6993CDCB-3#TRPBF is available at Aetrix Electronics and suitable for envelope detection, missing-pulse monitoring, watchdog timer implementation, and high-vibration timing applications requiring stable component supply across commercial temperature grades.
Supply support for LTC6993CDCB-3#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The TimerBlox® family - including LTC6993CDCB-3#TRPBF - was designed for precision, low-power, programmable timing in space-constrained systems where traditional RC or crystal-based solutions lack flexibility or stability.
FAQ
What is the trigger behavior of LTC6993CDCB-3#TRPBF?
LTC6993CDCB-3#TRPBF responds exclusively to falling-edge transitions on the TRIG pin and is non-retriggerable - meaning additional falling edges during an active output pulse are ignored until the pulse completes and the internal circuit re-arms. This behavior is fixed per device variant and cannot be altered via configuration pins or software.
How is pulse width programmed on LTC6993CDCB-3#TRPBF?
LTC6993CDCB-3#TRPBF pulse width is set by two independent elements: a resistor (RSET) between SET and GND determines the master oscillator period (tMASTER = 1µs × RSET/50kΩ), and a resistor divider on the DIV pin selects NDIV (1 to 2²¹) and output polarity. The final width is tOUT = NDIV × tMASTER.
What package type does LTC6993CDCB-3#TRPBF use?
LTC6993CDCB-3#TRPBF uses a 6-lead (2mm × 3mm) plastic DFN package (DCB), with exposed thermal pad connected to GND. It is RoHS-compliant, lead-free, and optimized for automated assembly and thermal dissipation in compact layouts.
Does LTC6993CDCB-3#TRPBF support dynamic pulse width adjustment?
Yes - LTC6993CDCB-3#TRPBF allows real-time pulse width modulation by varying the voltage applied to the SET pin (replacing RSET with a DAC or op-amp), which changes ISET current and thus tMASTER. This enables adaptive timing without hardware changes, provided VSET remains regulated at 1V and capacitance on SET is <10pF.
What is the supply current of LTC6993CDCB-3#TRPBF at 2.25V?
At V+ = 2.25V and 10µs pulse width, LTC6993CDCB-3#TRPBF draws 70µA in active mode. Idle current varies with RSET and NDIV: e.g., 55µA for RSET = 800kΩ and NDIV ≥ 512, making it suitable for battery-powered applications with infrequent timing events.
LTC6993CDCB-3#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LTC®6993
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Monostable
- Independent Circuits:
- 1
- Schmitt Trigger Input:
- No
- Propagation Delay:
- 11 ns
- Current - Output High, Low:
- 16mA, 16mA
- Voltage - Supply:
- 2.25 V ~ 5.5 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x3)
LTC6993CDCB-3#TRPBF FAQ
1.How can I place an order for LTC6993CDCB-3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993CDCB-3#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 LTC6993CDCB-3#TRPBF reliable?
The price and inventory of LTC6993CDCB-3#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6993CDCB-3#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993CDCB-3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993CDCB-3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993CDCB-3#TRPBF?
LTC6993CDCB-3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993CDCB-3#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 LTC6993CDCB-3#TRPBF?
For technical support, including LTC6993CDCB-3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993CDCB-3#TRPBF requirements.
6.How does Aetrix verify that LTC6993CDCB-3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993CDCB-3#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 LTC6993CDCB-3#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993CDCB-3#TRPBF?
All LTC6993CDCB-3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993CDCB-3#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 LTC6993CDCB-3#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993CDCB-3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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