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Analog Devices Inc. LTC6995IDCB-1#TRPBF
- Part No.:
- LTC6995IDCB-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6995IDCB-1#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
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Product details
Overview
LTC6995IDCB-1#TRPBF from Analog Devices is a silicon oscillator IC designed for long-duration timing events, delivering programmable output periods from 1.024ms to 9.54 hours (29.1µHz–977Hz) with ±1.5% frequency accuracy, 50% duty cycle square wave output, and active-high reset functionality. It operates from 2.25V to 5.5V, draws 55–80µA supply current, and targets power-on reset, watchdog, and periodic wake-up applications in industrial and automotive systems.
For engineers reviewing the LTC6995IDCB-1#TRPBF datasheet, LTC6995IDCB-1#TRPBF pinout, LTC6995IDCB-1#TRPBF application, or LTC6995IDCB-1#TRPBF equivalent, key selection considerations include its DFN-6 (2mm × 3mm) package, RSET-resistor-based frequency programming, DIV-pin-programmable NDIV divider (1–2²¹), polarity-selectable output, and –40°C to +85°C industrial temperature grade.
Technical Context
The LTC6995IDCB-1#TRPBF implements a master oscillator (1MHz max) controlled by ISET current sourced from the SET pin, followed by a fixed ÷1024 divider and an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹) selected via a V+/GND resistor divider on the DIV pin. Its internal A/D converter interprets DIV voltage to set both NDIV and the POL bit for output polarity.
Reset behavior is defined by active-high RST input (LTC6995-1 variant), halting oscillation and clearing dividers; release initiates a full half-period delay before first edge. Start-up time is 500× master clock period (typ. 500ns–8ms), with POR holding OUT low until stable operation begins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Period Range | 1.024ms to 34,360s (9.54 hours); enables long-interval timing without external RC networks. |
| Frequency Accuracy | ±1.5% over temp & supply; ensures reliable timing across industrial operating conditions. |
| Supply Voltage | 2.25V to 5.5V; supports direct interface with 3.3V and 5V logic domains. |
| Supply Current | 55µA to 80µA (2.25–5.5V, RSET = 800k–50kΩ); ultra-low power for battery-backed or energy-sensitive systems. |
| Operating Temp | –40°C to +85°C; qualified for industrial environments with no derating required. |
| Output Drive | CMOS, ±20mA sink/source; directly drives logic inputs, LEDs, or small MOSFET gates without buffering. |
| Reset Polarity | Active-high (RST pin); synchronizes power-on initialization or fault recovery in microcontroller-based systems. |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB), exposed pad connected to GND, 1mm profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pin 1) | Positive supply input | Accepts 2.25V–5.5V; requires local 0.1µF bypass to GND for noise immunity. |
| DIV (Pin 2) | Divider and polarity control input | 4-bit A/D input referenced to V+; sets NDIV and output polarity via resistor divider (VDIV/V+ = (DIVCODE + 0.5)/16). |
| SET (Pin 3) | Frequency-setting current input | Sinks 1.25µA–20µA; ISET = VSET/RSET (VSET regulated to 1.00V ±30mV) determines master oscillator frequency. |
| GND (Pin 4) | Ground reference | Low-inductance return path; exposed pad must be connected to PCB ground plane for thermal and EMI performance. |
| RST (Pin 5) | Active-high reset input | Halts oscillator and clears internal dividers when high; release triggers precise half-cycle startup delay (LTC6995-1 function). |
| OUT (Pin 6) | CMOS square wave output | 50% duty cycle, rail-to-rail swing (GND to V+); 30Ω output impedance supports 20mA drive capability. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable long-period timing | Single RSET resistor sets period from milliseconds to >9 hours-eliminates need for large capacitors or complex RC networks. |
| Glitch-free DIVCODE update | Internal digital filter ensures NDIV changes occur within one output cycle without spurious pulses or metastability. |
| Configurable output polarity | POL bit (MSB of DIVCODE) selects whether OUT is forced low or high during reset-enables direct compatibility with active-low or active-high system logic. |
| Ultra-low power operation | As low as 55µA at 2.25V/800kΩ RSET-extends battery life in remote sensors and portable monitoring devices. |
| Robust reset timing | 500ns–40ns reset propagation delay (V+ dependent) and 5ns minimum pulse width tolerance-ensures reliable synchronization under noisy or slow-rising signals. |
Applications
| Power-On Reset Timer | Watchdog Timer |
|---|---|
Use Scenario: Ensuring microcontroller or FPGA enters known state after power application or brownout recovery. IC Role / Device Role / Timing Role: Generates precise, user-defined reset pulse width (1ms–4.8hr) synchronized to V+ ramp-up. Use Value: Eliminates external RC components and improves reset timing repeatability vs. discrete solutions. | Use Scenario: Detecting firmware lockup in embedded controllers by requiring periodic service pulses. IC Role / Device Role / Timing Role: Provides configurable timeout interval (e.g., 1–60 seconds) with active-high reset input tied to MCU WDI pin. Use Value: Guarantees deterministic timeout even if MCU fails to toggle RST-prevents uncontrolled system operation. |
| Long Time One Shot | "Heartbeat" Timers |
Use Scenario: Triggering infrequent actions such as data logging, sensor calibration, or relay activation every minutes/hours. IC Role / Device Role / Timing Role: Delivers single-shot output pulse after programmable delay (e.g., 10s–9.5hr) initiated by RST edge. Use Value: Replaces multistage 555-based timers with higher accuracy, lower drift, and smaller footprint. | Use Scenario: Generating periodic status indicators (e.g., LED blink, CAN bus heartbeat signal) in safety-critical equipment. IC Role / Device Role / Timing Role: Produces stable, low-jitter (15ppm RMS) square wave at sub-Hz frequencies (e.g., 0.1Hz–1Hz) for system health signaling. Use Value: Maintains timing integrity over temperature and supply variation-critical for diagnostic visibility in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar long-duration oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6995IDCB-2#TRPBF | Active-low RST input; identical timing range, accuracy, and package. | Requires inverted reset logic; suitable where host MCU asserts active-low reset signals. | Select when system-level reset architecture mandates low-active assertion-no change to timing or power design. |
| MAX6373KA+T | Fixed 1.6s watchdog timeout; no programmable period or RSET configuration; SOT-23-5 package. | Limited to single preset timeout; lacks long-period flexibility and polarity control. | Choose only for simple, cost-sensitive watchdog-only use cases where programmability is unnecessary. |
Compared with LTC6995IDCB-2#TRPBF and MAX6373KA+T, the LTC6995IDCB-1#TRPBF uniquely combines active-high reset, full 1ms–9.5hr programmability via two resistors, and industrial temperature rating-making it optimal for flexible, precision timing in resource-constrained embedded designs.
Availability
LTC6995IDCB-1#TRPBF is available at Aetrix Electronics and suitable for power-on reset, watchdog timer, and periodic wake-up applications requiring stable component supply, extended temperature operation, and long-term timing reliability.
Supply support for LTC6995IDCB-1#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-1#TRPBF belongs to the TimerBlox® family-designed specifically for replacing bulky, inaccurate RC-based timing circuits with compact, factory-calibrated silicon oscillators for long-interval, low-power applications.
FAQ
What is the maximum output period achievable with the LTC6995IDCB-1#TRPBF?
The LTC6995IDCB-1#TRPBF supports a maximum output period of 34,360 seconds (9.54 hours), achieved when NDIV = 2²¹ and RSET = 800kΩ. This value is confirmed in the Electrical Characteristics table (tOUT MAX = 34,360 seconds) and applies across the full –40°C to +85°C operating temperature range with ±2.2% worst-case accuracy.
How does the RST pin behave during power-up for the LTC6995IDCB-1#TRPBF?
During power-up, the LTC6995IDCB-1#TRPBF's internal POR circuit holds the OUT pin low until V+ exceeds ~1.4V and start-up completes (~0.5–8ms). If RST is held low (inactive) at power-up, oscillation begins immediately after tSTART. If RST is high (active) at power-up, OUT remains low until RST is released-then a precise half-period delay occurs before the first output edge.
Can the LTC6995IDCB-1#TRPBF generate non-50% duty cycle waveforms?
No-the LTC6995IDCB-1#TRPBF always generates a 50% duty cycle square wave output. The datasheet explicitly states "When oscillating, the LTC6995 generates a 50% duty cycle square wave output." Duty cycle is fixed by internal architecture and cannot be adjusted via RSET, DIV, or any other pin.
What is the recommended layout practice for the SET pin on the LTC6995IDCB-1#TRPBF?
Capacitance on the SET pin must be limited to <10pF to minimize jitter and ensure stability. Use short, direct traces; avoid routing near noisy signals or switching nodes. A precision metal-film resistor (0.5%, 50ppm/°C) between SET and GND is recommended for best accuracy. Do not place decoupling caps directly on SET-bypassing is handled at V+.
Is the LTC6995IDCB-1#TRPBF AEC-Q100 qualified?
No-the LTC6995IDCB-1#TRPBF is rated for –40°C to +85°C industrial operation but is not AEC-Q100 qualified. Automotive-grade variants (e.g., LTC6995IS6-1#WTRPBF) carry the #W suffix and are explicitly designated for automotive use with controlled manufacturing and reliability reporting.
LTC6995IDCB-1#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-1#TRPBF FAQ
1.How can I place an order for LTC6995IDCB-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6995IDCB-1#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-1#TRPBF reliable?
The price and inventory of LTC6995IDCB-1#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-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6995IDCB-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6995IDCB-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6995IDCB-1#TRPBF?
LTC6995IDCB-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6995IDCB-1#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-1#TRPBF?
For technical support, including LTC6995IDCB-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6995IDCB-1#TRPBF requirements.
6.How does Aetrix verify that LTC6995IDCB-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6995IDCB-1#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-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6995IDCB-1#TRPBF?
All LTC6995IDCB-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6995IDCB-1#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-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC6995IDCB-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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