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Analog Devices Inc. LTC6990IDCB#TRMPBF
- Part No.:
- LTC6990IDCB#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6990IDCB#TRMPBF.pdf
- Description:
- IC OSC SILICON PROG 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
LTC6990IDCB#TRMPBF from Analog Devices is a precision voltage-controlled silicon oscillator (VCO) in the TimerBlox® family, operating from 488 Hz to 2 MHz with ±1.5% max frequency accuracy over –40°C to +85°C. It uses a single RSET resistor for fixed-frequency mode or two resistors for linear VCO tuning, delivers 50% duty-cycle CMOS output sourcing/sinking 20 mA, and features synchronized enable/disable with selectable high-impedance or low-state output disable - deployed in automotive sensor timing, portable instrumentation, and vibration-resistant industrial control.
For engineers reviewing the LTC6990IDCB#TRMPBF datasheet, LTC6990IDCB#TRMPBF pinout, LTC6990IDCB#TRMPBF application, or LTC6990IDCB#TRMPBF equivalent, key selection criteria include guaranteed –40°C to +85°C operation, DFN-6 (2mm × 3mm) package compatibility, programmable NDIV divider (1–128), <72 µA supply current at 100 kHz, and AEC-Q100 qualification for automotive use.
Technical Context
The LTC6990IDCB#TRMPBF implements a master oscillator (1 MHz max) controlled by regulated 1 V SET-pin voltage and programmable ISET current, with internal 4-bit A/D conversion of DIV pin voltage to select NDIV and Hi-Z behavior. Its architecture ensures glitch-free output transitions via synchronized OE control and eliminates VSET drift impact on frequency when using RSET.
It supports both fixed-frequency (single RSET) and voltage-controlled (dual-resistor VCTRL) modes, with VCO bandwidth >300 kHz at 1 MHz output and 500 µs typical start-up time. The device integrates power-on reset, digital filtering for stable DIVCODE detection, and temperature-compensated frequency stability (±0.005 %/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 488 Hz to 2 MHz - covers low-speed sensor clocking up to high-resolution PWM generation |
| Frequency Accuracy | ±1.5% max (recommended RSET range) - enables reliable timing without crystal-level cost or board space |
| Supply Voltage | 2.25 V to 5.5 V - supports direct interface with 3.3 V and 5 V logic systems and battery-powered designs |
| Supply Current | 71 µA typ at 5.5 V, NDIV = 128, RSET = 800 kΩ - enables ultra-low-power operation in always-on subsystems |
| Duty Cycle | 50% ±3% - ensures balanced timing for symmetric digital logic and ADC sampling clocks |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive under-hood environments |
| Output Drive | CMOS, ±20 mA - directly drives logic inputs, LEDs, or small capacitive loads without external buffers |
Pinout & Package
Package: 6-lead (2 mm × 3 mm) plastic DFN (DCB), exposed pad connected to GND, 1 mm profile - optimized for space-constrained PCB layouts and thermal performance in dense assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | 2.25 V–5.5 V rail; requires local 0.1 µF bypass to GND for noise immunity |
| DIV | Programmable divider & Hi-Z mode input | V+-referenced 4-bit A/D input; sets NDIV (1–128) and output state (Hi-Z or low) when OE = 0 |
| SET | Frequency-setting input | Regulated 1 V reference point; ISET = 1.25–40 µA programs master oscillator (RSET = VSET/ISET) |
| OE | Output enable control | Asynchronous disable with synchronized enable; hysteresis prevents false triggering on slow edges |
| GND | Analog/digital ground | Low-inductance connection required; ties to exposed pad for thermal and noise performance |
| OUT | CMOS oscillator output | Full-rail swing (GND to V+), ~30 Ω output impedance, 50% duty cycle square wave |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor frequency programming | RSET from 50 kΩ to 800 kΩ sets fOUT with <1.5% error - eliminates need for trimming or calibration |
| Voltage-controlled oscillator mode | Linear VCTRL tuning via second resistor - enables FM modulation and closed-loop feedback control |
| Synchronized output enable | OE-triggered clean pulse alignment eliminates glitches during enable/disable - critical for deterministic timing systems |
| Selectable Hi-Z or low-state disable | Configured via DIV pin voltage - supports wired-OR bus architectures and safe signal isolation |
| AEC-Q100 qualified | Rated for automotive applications - validated for reliability under temperature cycling, humidity, and vibration stress |
Applications
| Automotive Sensor Timing | Portable Instrumentation |
|---|---|
Use Scenario: Clocking MEMS accelerometers and pressure sensors in ADAS modules where EMI resilience and thermal stability are critical. IC Role / Device Role / Timing Role: Precision programmable clock source replacing ceramic resonators, providing jitter-controlled timing for synchronous data acquisition. Use Value: ±1.5% accuracy and ±0.005 %/°C drift ensure consistent sampling intervals across –40°C to +85°C without recalibration. | Use Scenario: Generating adjustable PWM signals in handheld test equipment with battery life constraints. IC Role / Device Role / Timing Role: Low-power VCO delivering variable-frequency square waves for LED dimming or motor speed control. Use Value: 71 µA supply current at 1 MHz ÷128 and 2.25 V operation extends runtime in coin-cell or Li-ion powered devices. |
| Industrial Vibration Monitoring | Embedded Control Systems |
Use Scenario: Synchronizing multi-channel analog front-ends in condition-monitoring gateways mounted on rotating machinery. IC Role / Device Role / Timing Role: Robust timing generator immune to mechanical shock and wide-temperature swings. Use Value: AEC-Q100 qualification and 125°C junction rating support deployment in high-vibration enclosures near motors or pumps. | Use Scenario: Providing system clock and peripheral timing in PLC I/O modules requiring long-term frequency stability. IC Role / Device Role / Timing Role: Fixed-frequency oscillator replacing quartz crystals to reduce BOM count and improve shock resistance. Use Value: 90 ppm/√kHr long-term drift ensures <266 ppm frequency shift after one year - suitable for unattended operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-controlled oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX974ESA+ | Wider supply range (2.7 V–5.5 V); higher quiescent current (120 µA min); no programmable divider | Limited to fixed-frequency use; lacks NDIV flexibility and AEC-Q100 qualification | Choose for legacy 2.7 V systems where divider functionality is unnecessary |
| SiT1532AI-JF-33E-32.768E | Fixed 32.768 kHz MEMS oscillator; no VCO or RSET programming; ±20 ppm stability | Crystal-replacement only; no frequency tuning or wide-range programmability | Choose only for ultra-low-jitter real-time clock backup, not general-purpose VCO use |
Compared with MAX974ESA+ and SiT1532AI-JF-33E-32.768E, the LTC6990IDCB#TRMPBF uniquely combines programmable division (1–128), true linear VCO capability, AEC-Q100 qualification, and sub-100 µA operation - making it the sole option for automotive-grade, software-tunable timing in space- and power-constrained designs.
Availability
LTC6990IDCB#TRMPBF is available at Aetrix Electronics and suitable for automotive sensor timing, portable instrumentation, and industrial vibration monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6990IDCB#TRMPBF 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 LTC6990IDCB#TRMPBF belongs to the TimerBlox® family - designed specifically for replacing crystals, ceramic resonators, and discrete RC oscillators with programmable, low-power, and layout-insensitive silicon timing solutions.
FAQ
What is the operating temperature range of the LTC6990IDCB#TRMPBF?
The LTC6990IDCB#TRMPBF is specified for –40°C to +85°C operation and is tested across this full range. It is the Industrial-grade variant of the LTC6990 family, distinct from the Commercial (0°C to 70°C) and High-Temperature (–40°C to 125°C) versions. This range makes the LTC6990IDCB#TRMPBF suitable for under-hood automotive modules and industrial control cabinets without derating.
How do I configure the LTC6990IDCB#TRMPBF for fixed-frequency operation?
To configure the LTC6990IDCB#TRMPBF for fixed-frequency operation, connect a precision resistor (RSET) between the SET pin and GND, and set the DIV pin voltage using a resistor divider to select NDIV (1–128). Use RSET = (1 MHz × 50 kΩ) / (NDIV × fOUT) - for example, 20 kHz with NDIV = 4 requires RSET ≈ 625 kΩ. The LTC6990IDCB#TRMPBF achieves ±1.5% accuracy with 1% RSET and proper layout.
Does the LTC6990IDCB#TRMPBF support voltage-controlled oscillator (VCO) mode?
Yes, the LTC6990IDCB#TRMPBF supports true linear VCO mode by applying a control voltage to the SET pin through a second resistor (RVCO). This creates a current-modulated master oscillator, enabling frequency modulation with >300 kHz bandwidth at 1 MHz output. The LTC6990IDCB#TRMPBF's transfer function is fOUT = (1 MHz × 50 kΩ) / (NDIV × RSET) − (VCTRL × 1 MHz/V), configurable per design requirements.
What package type is used by the LTC6990IDCB#TRMPBF?
The LTC6990IDCB#TRMPBF uses a 6-lead plastic DFN package (2 mm × 3 mm, 1 mm height), designated DCB. It features an exposed thermal pad connected to GND, supporting efficient heat dissipation and low-inductance grounding. This compact, surface-mount package is RoHS-compliant and optimized for automated assembly in high-density PCBs.
Is the LTC6990IDCB#TRMPBF AEC-Q100 qualified?
Yes, the LTC6990IDCB#TRMPBF is AEC-Q100 qualified for automotive applications. It meets stress test requirements for temperature cycling, humidity, and mechanical vibration, and is rated for operation from –40°C to +85°C. This qualification is explicitly stated in the official Analog Devices datasheet Rev. D and applies to all DCB-package variants marked "I" grade, including the LTC6990IDCB#TRMPBF.
LTC6990IDCB#TRMPBF 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:
- 488Hz ~ 2MHz
- Voltage - Supply:
- 2.25V ~ 5.5V
- Current - Supply:
- 235 µA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6990IDCB#TRMPBF FAQ
1.How can I place an order for LTC6990IDCB#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6990IDCB#TRMPBF 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 LTC6990IDCB#TRMPBF reliable?
The price and inventory of LTC6990IDCB#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6990IDCB#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6990IDCB#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6990IDCB#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6990IDCB#TRMPBF?
LTC6990IDCB#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6990IDCB#TRMPBF 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 LTC6990IDCB#TRMPBF?
For technical support, including LTC6990IDCB#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6990IDCB#TRMPBF requirements.
6.How does Aetrix verify that LTC6990IDCB#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6990IDCB#TRMPBF 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 LTC6990IDCB#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6990IDCB#TRMPBF?
All LTC6990IDCB#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6990IDCB#TRMPBF, 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 LTC6990IDCB#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6990IDCB#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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