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Analog Devices Inc. LTC6995IDCB-2#TRPBF
- Part No.:
- LTC6995IDCB-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6995IDCB-2#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,648
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Product details
Overview
LTC6995IDCB-2#TRPBF from Analog Devices is a silicon-based programmable low-frequency oscillator IC designed for long-duration timing events, featuring 1.024ms–9.54h output period range (29.1µHz–977Hz), ±1.5% frequency accuracy over temperature, active-low reset input, and CMOS 20mA drive capability. It serves as a precision timing source in power-on reset, watchdog, and periodic wake-up circuits across industrial and automotive systems.
For engineers reviewing the LTC6995IDCB-2#TRPBF datasheet, LTC6995IDCB-2#TRPBF pinout, LTC6995IDCB-2#TRPBF application, or LTC6995IDCB-2#TRPBF equivalent, key selection criteria include its active-low RST polarity, DFN-6 package with exposed pad, 2.25V–5.5V supply operation, –40°C to 85°C extended temperature grade, and resistor-programmable NDIV divider settings via DIV pin voltage.
Technical Context
The LTC6995IDCB-2#TRPBF implements a master oscillator (1MHz max) controlled by SET pin current (ISET = VSET/RSET), followed by fixed ÷1024 and programmable NDIV dividers (1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹). Its internal 4-bit A/D converter on the DIV pin selects both NDIV and output polarity (POL bit).
Reset behavior is defined by active-low RST input: when asserted, it halts the master oscillator and clears internal dividers; release initiates a full half-period delay before oscillation resumes. Start-up time is 500× master clock period (typ. 500ns–8ms), with POR threshold at 1.4V and guaranteed operation down to 2.25V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Period Range | 1.024ms to 34,360s (9.54h); enables long-interval timing without external RC networks |
| Frequency Accuracy | ±1.5% max over –40°C to 85°C; ensures reliable timing in extended industrial environments |
| Supply Voltage | 2.25V to 5.5V; supports direct interface with 3.3V and 5V logic rails without level-shifting |
| Supply Current | 55µA to 170µA depending on RSET and V+; enables ultra-low-power battery-backed applications |
| Output Drive | ±20mA CMOS; directly drives LEDs, logic inputs, or small relays without buffer stages |
| Operating Temp | –40°C to +85°C (I-grade); qualified for industrial control and automotive under-hood modules |
| Reset Polarity | Active-low RST input; matches microcontroller reset outputs with open-drain or push-pull low-active assertion |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB) with exposed pad connected to GND; 1mm profile suitable for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | 2.25V–5.5V rail; requires local 0.1µF bypass to GND for noise immunity |
| GND | Ground reference | Low-inductance connection point; exposed pad must be soldered to GND plane for thermal and electrical performance |
| SET | Frequency-setting input | Regulated 1V reference node; ISET = 1V/RSET programs master oscillator (RSET = 50kΩ–800kΩ) |
| RST | Active-low reset input | Asserting low halts oscillator and clears dividers; release triggers precise half-cycle startup delay |
| DIV | Divider/polarity programming input | Voltage-ratio-based 4-bit A/D input (VDIV/V+ = (DIVCODE+0.5)/16 ±1.5%) sets NDIV and POL bit |
| OUT | CMOS square-wave output | 50% duty cycle; swings rail-to-rail (GND to V+); 30Ω typical output impedance |
Key Features
| Feature | Design Value |
|---|---|
| Resistor-programmable timing | Single RSET (50kΩ–800kΩ) and resistor-divider on DIV pin eliminate need for crystal, trimmer, or digital configuration |
| Glitch-free DIVCODE update | Internal digital filter ensures NDIV changes occur only after stable A/D conversion, preventing output glitches during runtime reconfiguration |
| Configurable output polarity | POL bit (MSB of DIVCODE) determines whether OUT is forced high or low during reset, enabling match to system-level active-high/active-low logic |
| Fast start-up | 500× master clock period (≤8ms typ.) ensures rapid initialization after power-on or reset release |
| Automotive-ready | AEC-Q100 qualified (I-grade); specified for –40°C to +85°C with long-term drift of 90ppm/√kHr under continuous bias |
Applications
| Power-On Reset Timer | Watchdog Timer |
|---|---|
Use Scenario: Ensures microcontroller remains held in reset until power rails stabilize and clocks settle after cold start or brownout recovery. IC Role / Device Role / Timing Role: Generates precise, resistor-defined reset pulse width (e.g., 100ms–5s) with active-low RST matching MCU reset pin requirements. Use Value: Eliminates discrete RC networks prone to drift; ±1.5% accuracy guarantees deterministic reset timing across temperature and voltage. | Use Scenario: Monitors firmware execution in safety-critical embedded systems (e.g., motor controllers, battery management) to detect lockups or infinite loops. IC Role / Device Role / Timing Role: Provides configurable timeout interval (e.g., 1s–30s) triggered by periodic MCU "kick" signal applied to RST pin. Use Value: Active-low RST allows direct connection to MCU GPIO; glitch-free DIVCODE update enables dynamic timeout adjustment without system interruption. |
| Periodic Wake-Up Call | "Heartbeat" Timer |
Use Scenario: Wakes ultra-low-power sensor nodes (e.g., environmental monitors) from deep sleep at regular intervals (minutes to hours) to sample data and transmit. IC Role / Device Role / Timing Role: Generates long-period clock (e.g., 30s–2h) to trigger MCU wake-up interrupt via OUT pin edge detection. Use Value: 55µA min supply current extends battery life; DFN-6 footprint minimizes board area in compact IoT devices. | Use Scenario: Provides visible or audible status indication (e.g., LED blink, buzzer pulse) in medical or industrial equipment to confirm system liveness. IC Role / Device Role / Timing Role: Drives LED directly via OUT pin with user-selectable blink rate (e.g., 0.5Hz–2Hz) and polarity (on/off state during reset). Use Value: ±20mA drive eliminates external transistor; programmable polarity ensures LED illuminates only during valid operational state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6995IDCB-1#TRPBF | Active-high RST input; identical timing specs, package, and temperature grade | Requires high-active reset signal from host MCU or supervisor IC | Select when system reset architecture uses active-high assertion and no level translation is desired |
| TPS3808G33DBVR | Dedicated voltage supervisor with fixed 3.3V threshold and 200ms reset timeout; no programmable timing or oscillator output | Provides power-fail detection and fixed reset duration only; no clock generation capability | Choose only for basic reset supervision where programmable timing or periodic output is unnecessary |
Compared with LTC6995IDCB-1#TRPBF, the LTC6995IDCB-2#TRPBF offers identical timing performance but inverted reset polarity-critical for compatibility with low-active MCU reset pins-while TPS3808G33DBVR lacks oscillator functionality entirely, serving only as a fixed-threshold supervisor.
Availability
LTC6995IDCB-2#TRPBF is available at Aetrix Electronics and suitable for industrial control, automotive subsystems, and battery-powered IoT devices requiring stable component supply with extended temperature operation and long-duration timing precision.
Supply support for LTC6995IDCB-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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6995IDCB-2#TRPBF belongs to the TimerBlox® family of silicon timing devices, engineered specifically for replacing bulky RC timers and crystals in applications demanding programmable, low-drift, long-interval oscillation without microcontroller intervention.
FAQ
What is the reset polarity of the LTC6995IDCB-2#TRPBF?
The LTC6995IDCB-2#TRPBF features an active-low reset input (RST), meaning the oscillator halts and internal dividers clear when the RST pin is driven low. Release from low state initiates a full half-period delay before oscillation resumes. This matches common microcontroller reset outputs that assert low during fault conditions or power-up sequencing.
How do I calculate the RSET resistor value for a target output period using the LTC6995IDCB-2#TRPBF?
To set a target output period tOUT with the LTC6995IDCB-2#TRPBF, first select NDIV from Table 1 based on desired tOUT and polarity (POL bit). Then compute RSET = (50kΩ / 1.024ms) × (tOUT / NDIV). For example, for tOUT = 1s and NDIV = 64, RSET ≈ 763kΩ. Use a 0.5% metal-film resistor for best accuracy and limit SET pin capacitance to <10pF.
Can the LTC6995IDCB-2#TRPBF operate from a 2.5V supply?
Yes, the LTC6995IDCB-2#TRPBF operates over 2.25V to 5.5V, making 2.5V fully supported. At 2.5V, supply current ranges from 55µA (RSET = 800kΩ) to 135µA (RSET = 50kΩ), and output high/low voltages meet CMOS thresholds (VOH ≥ 2.17V, VOL ≤ 0.26V at 8mA sink/source), ensuring reliable interfacing with 2.5V logic families.
What is the maximum output frequency achievable with the LTC6995IDCB-2#TRPBF?
The maximum output frequency of the LTC6995IDCB-2#TRPBF is 977Hz, achieved when NDIV = 1 and RSET = 50kΩ (tOUT = 1.024ms). This corresponds to the fastest master oscillator setting (1MHz) divided only by the fixed ÷1024 stage. Frequency accuracy remains within ±1.5% across the full operating temperature range of –40°C to +85°C.
Does the LTC6995IDCB-2#TRPBF require external components for basic operation?
Yes, the LTC6995IDCB-2#TRPBF requires two external resistors for basic operation: RSET (between SET and GND) to set master oscillator frequency, and a resistor divider on the DIV pin to program NDIV and output polarity. A 0.1µF ceramic capacitor between V+ and GND is also mandatory for supply decoupling. No crystal, trimmer, or additional timing capacitors are needed.
LTC6995IDCB-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 ~ 85°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6995IDCB-2#TRPBF FAQ
1.How can I place an order for LTC6995IDCB-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6995IDCB-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 LTC6995IDCB-2#TRPBF reliable?
The price and inventory of LTC6995IDCB-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 LTC6995IDCB-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6995IDCB-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6995IDCB-2#TRPBF transactions.
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4.How is shipping managed for LTC6995IDCB-2#TRPBF?
LTC6995IDCB-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6995IDCB-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 LTC6995IDCB-2#TRPBF?
For technical support, including LTC6995IDCB-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6995IDCB-2#TRPBF requirements.
6.How does Aetrix verify that LTC6995IDCB-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6995IDCB-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 LTC6995IDCB-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6995IDCB-2#TRPBF?
All LTC6995IDCB-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6995IDCB-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 LTC6995IDCB-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC6995IDCB-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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