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Analog Devices Inc. LTC6995HDCB-2#TRPBF
- Part No.:
- LTC6995HDCB-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6995HDCB-2#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,758
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Product details
Overview
LTC6995HDCB-2#TRPBF from Analog Devices is a silicon-based programmable low-frequency oscillator IC designed for long-duration timing events in harsh environments. It delivers 1.024ms–9.54h output period (29.1µHz–977Hz), ±1.5% max frequency accuracy, and operates from –40°C to 125°C on 2.25V–5.5V supply. Used in automotive watchdog timers and industrial power-on reset circuits.
For engineers reviewing the LTC6995HDCB-2#TRPBF datasheet, LTC6995HDCB-2#TRPBF pinout, LTC6995HDCB-2#TRPBF application, or LTC6995HDCB-2#TRPBF equivalent, key selection criteria include its active-low RST input, DFN-6 package with exposed pad, programmable NDIV divider (1–2²¹), 55–80µA supply current, and AEC-Q100 qualification for automotive use.
Technical Context
The LTC6995HDCB-2#TRPBF implements a master oscillator (1MHz max) controlled by SET pin current (ISET = VSET/RSET), followed by fixed ÷1024 and programmable divider (NDIV = 1, 8, 64, ..., 2²¹). Its internal 4-bit A/D converter reads DIV pin voltage to set both NDIV and output polarity (POL bit).
Reset behavior is version-specific: LTC6995-2 uses active-low RST that forces OUT to a fixed state (determined by POL) and clears internal dividers; release initiates full half-cycle delay before oscillation resumes. Power-on reset asserts OUT low during start-up (tSTART ≈ 500×tMASTER).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Period Range | 1.024ms to 34,360s - supports ultra-long one-shots and periodic wake-up intervals without external RC networks. |
| Frequency Accuracy | ±1.5% max over temp - enables reliable timing without calibration in automotive and industrial systems. |
| Supply Current | 55µA to 80µA (2ms–9.5h period) - allows battery-powered operation for years in low-duty-cycle applications. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and high-reliability industrial control environments. |
| Output Drive | ±20mA CMOS - directly drives logic inputs, LEDs, or small relays without buffer stages. |
| Reset Polarity | Active-low RST - matches microcontroller reset inputs requiring low-active assertion in safety-critical systems. |
| Package | 6-lead 2mm × 3mm DFN with exposed pad - provides thermal performance and board space efficiency for compact designs. |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB), exposed pad connected to GND. Thermal resistance θJA = 64°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | 2.25V–5.5V rail; requires local 0.1µF bypass to GND for stable oscillator operation. |
| GND | Ground reference | Low-inductance connection point; exposed pad must be soldered to PCB ground plane for thermal and noise performance. |
| SET | Frequency-setting input | Regulated at 1.00V ±30mV; ISET = 1.25µA–20µA sets master oscillator via RSET = VSET/ISET. |
| RST | Active-low reset input | Pulls internal dividers to zero and holds OUT at fixed level (low/high per POL bit); hysteresis ensures noise immunity. |
| DIV | Divider/polarity programming | Voltage-ratio input (VDIV/V+) selects 4-bit DIVCODE to configure NDIV and output polarity simultaneously. |
| OUT | CMOS square wave output | 50% duty cycle, rail-to-rail swing (GND to V+), 30Ω typical output impedance; sources/sinks 20mA. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable period range | 1.024ms–9.54h using single RSET resistor - eliminates need for large capacitors or precision RC networks. |
| Glitch-free DIVCODE update | Internal digital filter ensures NDIV changes occur within one master clock cycle without output glitches. |
| Reset-initiated full-cycle start | Release of RST triggers precise half-period delay before first edge - enables deterministic power-on reset timing. |
| AEC-Q100 qualified | Rated for automotive applications (Grade H, –40°C to 125°C) - meets reliability and stress-test requirements for vehicle ECUs. |
| Low-jitter architecture | 15ppmRMS period jitter (NDIV = 1) - ensures stable timing margins in synchronous digital systems. |
Applications
| Power-On Reset Timer | Watchdog Timer |
|---|---|
Use Scenario: Ensures microcontroller remains held in reset until power rails stabilize after cold start or brownout recovery. IC Role / Device Role / Timing Role: Generates precise, temperature-stable reset pulse width (e.g., 100ms–2s) triggered by V+ crossing POR threshold. Use Value: Eliminates external RC network drift and improves reset timing repeatability across –40°C to 125°C operating range. | Use Scenario: Monitors firmware execution in engine control units and ADAS modules to detect lockups or infinite loops. IC Role / Device Role / Timing Role: Provides configurable timeout interval (e.g., 1–60s) with active-low RST output tied to MCU WDI pin. Use Value: Enables fail-safe system recovery without software intervention; AEC-Q100 qualification ensures reliability in safety-critical domains. |
| Long Time One Shot | "Heartbeat" Timer |
Use Scenario: Triggers periodic maintenance alerts or sensor recalibration in industrial IoT gateways operating on battery power. IC Role / Device Role / Timing Role: Delivers single-pulse output after programmable delay (e.g., 1–24 hours) using NDIV = 2²¹ and RSET = 800kΩ. Use Value: Achieves multi-hour delays with <1.5% error and sub-80µA quiescent current - extends battery life significantly. | Use Scenario: Generates periodic status pulses (e.g., every 5–30 seconds) to indicate ECU health in telematics and infotainment systems. IC Role / Device Role / Timing Role: Produces stable, low-jitter square wave (e.g., 0.033Hz–1Hz) with programmable polarity for LED or CAN bus signaling. Use Value: Replaces crystal-based oscillators in cost-sensitive designs while maintaining timing integrity across wide temperature and supply ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6995HDCB-1#TRPBF | Active-high RST input; identical timing specs, package, and temperature grade. | Requires high-active reset signal from host controller; unsuitable where MCU reset pin is active-low. | Select when system-level reset logic is high-asserted and polarity matching simplifies interface design. |
| SiT1533AI-JF-33E-32.768000 | Fixed 32.768kHz MEMS oscillator; no programmability, no RST, no NDIV control. | Limited to real-time clock backup; cannot replace long-period or reset-synchronized functions. | Only viable for basic timing where frequency and duration are static and reset coordination is unnecessary. |
Compared with LTC6995HDCB-1#TRPBF, the LTC6995HDCB-2#TRPBF enables direct interfacing with active-low microcontroller reset pins without level-shifting, while SiT1533AI-JF-33E-32.768000 lacks programmability and reset control entirely-making it unsuitable for watchdog or power-on reset roles.
Availability
LTC6995HDCB-2#TRPBF is available at Aetrix Electronics and suitable for automotive power-on reset, industrial watchdog timer, and battery-powered long-interval timing applications requiring stable component supply across extended temperature ranges.
Supply support for LTC6995HDCB-2#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The TimerBlox® family-including LTC6995HDCB-2#TRPBF-is engineered for robust, programmable timing in space-constrained, high-reliability systems where traditional RC or crystal solutions fall short in accuracy, stability, or flexibility.
FAQ
What is the function of the DIV pin on the LTC6995HDCB-2#TRPBF?
The DIV pin on the LTC6995HDCB-2#TRPBF accepts a voltage ratio (VDIV/V+) that an internal 4-bit A/D converter reads to determine both the programmable divider ratio (NDIV = 1, 8, 64, ..., 2²¹) and output polarity (POL bit). This dual-function pin eliminates separate configuration lines and enables precise, resistor-based setup of timing and logic behavior without firmware involvement.
How does the LTC6995HDCB-2#TRPBF achieve ±1.5% frequency accuracy over temperature?
The LTC6995HDCB-2#TRPBF achieves ±1.5% max frequency accuracy by regulating the SET pin voltage to 1.00V ±30mV and deriving oscillator frequency solely from RSET value (fOUT ∝ RSET). This architecture removes VSET drift sensitivity, leaving only RSET tolerance and inherent silicon variation as error sources-enabling stable long-term timing without calibration.
Can the LTC6995HDCB-2#TRPBF be used in automotive applications?
Yes, the LTC6995HDCB-2#TRPBF is AEC-Q100 qualified for automotive applications (Grade H, –40°C to 125°C) and specified for use in engine control units, body electronics, and ADAS modules. Its active-low RST input, low supply current, and robust reset propagation delay (16–40ns) meet functional safety timing requirements in vehicular systems.
What is the minimum output pulse width guaranteed by the LTC6995HDCB-2#TRPBF during frequency transitions?
During DIVCODE changes, the LTC6995HDCB-2#TRPBF guarantees no output pulse (high or low) shorter than the master clock period (tMASTER ≈ 1µs), due to internal digital filtering and glitch-free divider reconfiguration. This ensures safe interfacing with downstream logic that requires minimum pulse width compliance.
Does the LTC6995HDCB-2#TRPBF require external components for basic operation?
Yes, the LTC6995HDCB-2#TRPBF requires two external components for basic operation: a resistor (RSET) between SET and GND to set frequency, and a 0.1µF ceramic capacitor between V+ and GND for supply decoupling. The DIV pin may use a resistor divider (R1/R2) for NDIV/POL selection, but can also be driven by a DAC or GPIO if voltage-ratio accuracy is maintained.
LTC6995HDCB-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- TimerBlox®
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Oscillator, Silicon
- Count:
- -
- Frequency:
- 29.1µHz ~ 977Hz
- Voltage - Supply:
- 2.25V ~ 5.5V
- Current - Supply:
- 135 µA
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6995HDCB-2#TRPBF FAQ
1.How can I place an order for LTC6995HDCB-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6995HDCB-2#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 LTC6995HDCB-2#TRPBF reliable?
The price and inventory of LTC6995HDCB-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6995HDCB-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6995HDCB-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6995HDCB-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6995HDCB-2#TRPBF?
LTC6995HDCB-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6995HDCB-2#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 LTC6995HDCB-2#TRPBF?
For technical support, including LTC6995HDCB-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6995HDCB-2#TRPBF requirements.
6.How does Aetrix verify that LTC6995HDCB-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6995HDCB-2#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 LTC6995HDCB-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6995HDCB-2#TRPBF?
All LTC6995HDCB-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6995HDCB-2#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 LTC6995HDCB-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC6995HDCB-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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