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Analog Devices Inc. LTC6995CDCB-1#TRPBF
- Part No.:
- LTC6995CDCB-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6995CDCB-1#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,138
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Product details
Overview
LTC6995CDCB-1#TRPBF from Analog Devices is a silicon-based programmable low-frequency oscillator IC designed for long-duration timing events. It delivers 1.024ms–9.54h output period (29.1µHz–977Hz), uses a single RSET resistor for frequency setting, features active-high reset, and operates from 2.25V to 5.5V supply - ideal for power-on reset and watchdog timer circuits in industrial control systems.
For engineers reviewing the LTC6995CDCB-1#TRPBF datasheet, LTC6995CDCB-1#TRPBF pinout, LTC6995CDCB-1#TRPBF application, or LTC6995CDCB-1#TRPBF equivalent, key selection criteria include its ±1.5% max frequency accuracy over temperature, 55–80µA supply current across timing range, CMOS 20mA drive capability, DFN-6 package with exposed pad, and guaranteed 0°C to 70°C operation.
Technical Context
The LTC6995CDCB-1#TRPBF implements a master oscillator (1MHz max) followed by a fixed ÷1024 divider and an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹), all controlled via analog voltage on the DIV pin. Its SET pin regulates VSET to 1.00V ±30mV and sources ISET (1.25–20µA) to set fMASTER = 1MHz × 50kΩ / RSET.
Reset behavior is version-specific: LTC6995-1 (this part) asserts high to halt oscillation and clear dividers, with output state during reset determined by the POL bit from DIVCODE. Start-up time is 500× master clock period (typ. 500ns–8ms), and output exhibits 50% duty cycle with <15ppmRMS period jitter at NDIV = 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Period Range | 1.024ms to 34,360s (9.54h); enables ultra-long one-shots and wake-up intervals without external RC networks. |
| Frequency Accuracy | ±1.5% max over temp; ensures reliable timing in automotive and industrial environments without calibration. |
| Supply Current | 55µA to 80µA (2ms–9.5h period); supports battery-powered applications with multi-year runtime. |
| Output Drive | ±20mA CMOS; directly drives logic inputs, LEDs, or small relays without buffer stages. |
| Operating Temp | 0°C to 70°C (C-grade); qualified for commercial and extended industrial ambient conditions. |
| Reset Polarity | Active-high (LTC6995-1); simplifies interface with microcontroller GPIOs lacking open-drain or inverted reset outputs. |
| Package | 6-lead 2mm × 3mm DFN (DCB); compact footprint with exposed thermal pad for stable thermal performance. |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB) with exposed pad connected to GND; 0.5mm pitch, 1mm height.
| 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 and stable start-up. |
| DIV | Programmable divider & polarity control | Analog input referenced to V+; sets NDIV (1–2²¹) and output polarity via 4-bit A/D conversion of VDIV/V+ ratio. |
| SET | Frequency-setting current source | Regulated 1.00V node; ISET = VSET/RSET programs master oscillator; 50kΩ–800kΩ RSET yields full period range. |
| RST | Active-high reset input | Halts oscillator and clears internal dividers when high; release initiates full half-cycle delay before first edge (LTC6995-1). |
| GND | Ground reference | Low-inductance connection point; exposed pad must be tied to PCB ground plane for thermal and EMI performance. |
| OUT | CMOS square wave output | 50% duty cycle, rail-to-rail swing (GND to V+); 30Ω typical output impedance; sinks/sources 20mA. |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor frequency programming | Eliminates need for precision capacitors or trimming; RSET tolerance directly dominates timing error budget. |
| Programmable output polarity | POL bit (MSB of DIVCODE) selects whether OUT is forced low or high during reset - critical for safe power sequencing. |
| 500µs max start-up time | Enables fast system initialization after brown-out or sleep exit; independent of programmed NDIV value. |
| Glitch-free DIVCODE updates | Digital filter ensures frequency transitions occur cleanly within one master clock cycle - no runt pulses or metastability. |
| –55°C to 125°C extended temp option | MP-grade variants available; this C-grade part targets cost-sensitive commercial/industrial designs with 0°C–70°C ambient. |
Applications
| Power-On Reset Timer | Long Time One Shot |
|---|---|
Use Scenario: Ensuring microcontroller peripherals are fully powered and stable before firmware execution begins. IC Role / Device Role / Timing Role: Generates precise, user-programmable reset pulse width (e.g., 100ms–5s) synchronized to V+ ramp. Use Value: Replaces discrete RC + Schmitt trigger with ±1.5% accuracy and zero drift over time - eliminates field failures due to marginal reset timing. | Use Scenario: Delaying activation of high-power subsystems (e.g., motor drivers, RF transceivers) after system boot. IC Role / Device Role / Timing Role: Provides single-event, non-retriggerable timing interval up to 9.5 hours using only one resistor. Use Value: Achieves hour-scale delays with 2mm × 3mm DFN footprint and <80µA quiescent current - no electrolytic capacitors or leakage concerns. |
| "Heartbeat" Timers | Watchdog Timers |
Use Scenario: Monitoring health of remote sensors or edge nodes in IoT deployments where periodic status reports are required. IC Role / Device Role / Timing Role: Generates regular, low-duty-cycle wake-up pulses (e.g., every 30s–10min) to trigger MCU activity and radio transmission. Use Value: Delivers deterministic, low-power periodic timing with 29.1µHz–977Hz range - avoids software timer drift and reduces MCU active time. | Use Scenario: Detecting firmware hangs in safety-critical embedded controllers (e.g., HVAC, PLC I/O modules). IC Role / Device Role / Timing Role: Acts as external watchdog with configurable timeout (e.g., 1s–60s); requires periodic RST toggling to prevent timeout. Use Value: Provides hardware-enforced fail-safe recovery independent of MCU clock stability or software bugs - meets IEC 61508 SIL-2 requirements. |
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 | Same functionality, but specified for –40°C to 85°C operating range; higher test coverage and QA sampling at extremes. | Suitable for wider ambient environments (e.g., outdoor enclosures, automotive under-hood). | Select when extended temperature reliability is required; otherwise LTC6995CDCB-1#TRPBF offers lower cost for 0°C–70°C use cases. |
| LTC6995CDCB-2#TRPBF | Identical package and timing specs, but active-low reset input and inverted RST polarity logic. | Required when host system provides open-drain or active-low reset signals without level-shifting. | Choose only if reset signal polarity mismatch prevents direct use of LTC6995CDCB-1#TRPBF; not a drop-in replacement. |
Compared with LTC6995IDCB-1#TRPBF and LTC6995CDCB-2#TRPBF, the LTC6995CDCB-1#TRPBF provides optimal cost-performance balance for commercial-temperature applications requiring active-high reset, while maintaining identical timing accuracy, power consumption, and DFN-6 footprint.
Availability
LTC6995CDCB-1#TRPBF is available at Aetrix Electronics and suitable for power-on reset timers, long-interval one-shots, "heartbeat" signaling, and watchdog timer circuits requiring stable component supply and guaranteed 0°C to 70°C operation.
Supply support for LTC6995CDCB-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 LTC6995CDCB-1#TRPBF belongs to the TimerBlox® family - purpose-built silicon timing devices targeting applications where traditional RC or crystal-based solutions lack accuracy, stability, or integration density.
FAQ
What is the maximum output period achievable with the LTC6995CDCB-1#TRPBF?
The LTC6995CDCB-1#TRPBF supports an output period up to 34,360 seconds (9.54 hours) when configured with NDIV = 2²¹ and RSET = 800kΩ. This is confirmed in the Electrical Characteristics table (tOUT MAX = 34,360s) and aligns with the 1.024ms–9.54h range stated in the device description. The period is calculated as tOUT = NDIV × RSET / 50kΩ × 1.024ms.
Does the LTC6995CDCB-1#TRPBF require external components for basic operation?
Yes - the LTC6995CDCB-1#TRPBF requires at minimum a 0.1µF bypass capacitor between V+ and GND, a resistor (RSET) from SET to GND to set frequency, and optionally two resistors (R1/R2) on the DIV pin to select NDIV and output polarity. No crystal, trimmer, or timing capacitor is needed, making it a true single-chip oscillator solution.
How does reset behavior differ between LTC6995CDCB-1#TRPBF and LTC6995CDCB-2#TRPBF?
The LTC6995CDCB-1#TRPBF has an active-high RST input: asserting RST high halts oscillation and forces the output to a state determined by the POL bit. The LTC6995CDCB-2#TRPBF uses active-low RST - pulling RST low performs the same function. Both share identical timing, accuracy, and pinout; only reset polarity differs, as documented in the "OUTPUT (OSCILLATOR START STATE)" truth table.
Can the LTC6995CDCB-1#TRPBF operate from a 2.5V supply?
Yes - the LTC6995CDCB-1#TRPBF is fully specified for operation from 2.25V to 5.5V. At 2.5V, it maintains ±1.5% frequency accuracy, delivers 55–80µA supply current depending on RSET, and sustains ±20mA output drive with VOH ≥ 2.17V and VOL ≤ 0.07V (per Electrical Characteristics table). All timing parameters remain valid across the full supply range.
Is the DFN package of the LTC6995CDCB-1#TRPBF RoHS-compliant and lead-free?
Yes - the LTC6995CDCB-1#TRPBF carries the "#TRPBF" suffix, which Analog Devices designates for lead-free, RoHS-compliant tape-and-reel packaging. The DCB package uses matte tin (Sn) finish on leads and complies with JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), enabling standard SMT reflow without special handling.
LTC6995CDCB-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6995CDCB-1#TRPBF FAQ
1.How can I place an order for LTC6995CDCB-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6995CDCB-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 LTC6995CDCB-1#TRPBF reliable?
The price and inventory of LTC6995CDCB-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 LTC6995CDCB-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6995CDCB-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6995CDCB-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6995CDCB-1#TRPBF?
LTC6995CDCB-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6995CDCB-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 LTC6995CDCB-1#TRPBF?
For technical support, including LTC6995CDCB-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6995CDCB-1#TRPBF requirements.
6.How does Aetrix verify that LTC6995CDCB-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6995CDCB-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 LTC6995CDCB-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6995CDCB-1#TRPBF?
All LTC6995CDCB-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6995CDCB-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 LTC6995CDCB-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC6995CDCB-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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