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LM1819N
The LM1819N is a frequency to voltage converter chip manufactured by Texas InstrumentsLM1819N
The LM1819N is a frequency to voltage converter chip manufactured by Texas Instruments
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LM1819N DataSheet
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Details
The LM1819N is an analog television sync separator integrated circuit (IC) manufactured by Texas Instruments. It is designed to extract horizontal and vertical synchronization signals from composite video signals, facilitating the synchronization of various television systems.This IC operates within a wide range of input frequencies and supports both positive and negative sync inputs. It features high input impedance, making it suitable for use with various video sources. Additionally, the LM1819N incorporates internal clamp circuitry, ensuring stable output signals even in the presence of varying input signal levels.With its compact size and low power consumption, the LM1819N is ideal for integration into television receivers, video monitors, and other video processing equipment. Its versatility and reliability make it a popular choice for applications requiring precise sync signal extraction in analog video systems
Key Features
- Phase Locked Loop (PLL) TV Broadcast Demodulator
- Operates from 53 to 815 MHz VHF/UHF TV bands
- Compatible with NTSC, PAL or SECAM color standards
- Quadrature-Phase Synchronous Detector
- Bandpass Filter with Linear Phase
- Integrated VCO Tuned from 110 to 880 MHz
Application
- Remote control systems
- Wireless data transmission
- Vehicle tracking and navigation systems
- Industrial automation
- Telemetry systems
- Robotics
- Wireless sensor networks
- Home automation
- Gaming controllers
- Medical devices
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Rohs Code | No | Part Life Cycle Code | Obsolete |
| Reach Compliance Code | HTS Code ! | 8542.39.00.01 | |
| Analog IC - Other Type | ANALOG CIRCUIT | JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e0 | Length | 19.18 mm |
| Number of Functions | 1 | Number of Terminals | 14 |
| Operating Temperature-Max | 85 °C | Operating Temperature-Min | -40 °C |
| Package Body Material | PLASTIC/EPOXY | Package Code | DIP |
| Package Shape | RECTANGULAR | Package Style | IN-LINE |
| Qualification Status ! | Not Qualified | Seated Height-Max | 5.08 mm |
| Supply Current-Max (Isup) | 65 mA | Supply Voltage-Nom (Vsup) | 13.1 V |
| Surface Mount ! | NO | Technology | BIPOLAR |
| Temperature Grade ! | INDUSTRIAL | Terminal Finish | TIN LEAD |
| Terminal Form ! | THROUGH-HOLE | Terminal Pitch ! | 2.54 mm |
| Terminal Position | DUAL | Width | 7.62 mm |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is LM1819N?
The LM1819N is a tone decoder IC (integrated circuit) designed by Texas Instruments. It is commonly used in electronic applications for detecting specific audio tones and signaling frequencies. The LM1819N is ideal for applications such as remote control systems, tone recognition, and communication devices.
How Does LM1819N Work?
The LM1819N operates by analyzing input audio signals for specific frequencies or tones. It includes filters and demodulation circuits that can detect and decode the presence of predetermined tones within the input signal. The IC then provides an output signal or response based on the detected tones, enabling various control or signaling functions.
How Many Pins does LM1819N have and What are the Functions of the Pinout Configuration?
The LM1819N comes in a 14-pin DIP (Dual Inline Package) format. The pinout configuration includes:
- VCC: Positive power supply pin.
- GND: Ground pin.
- VREF: Reference voltage pin.
- AGC: Automatic Gain Control output pin.
- VCO: Voltage-Controlled Oscillator output pin.
- DVCC: Digital power supply pin.
- DEMO2: Demodulator output pin.
- D2: Data output pin 2.
- D1: Data output pin 1.
- NC: No Connect pin.
What are the Pros and Cons of LM1819N?
Pros:
- Tone Detection: Specialized for accurate tone detection and decoding.
- Wide Application Range: Suitable for various audio signal processing and control applications.
- Reliable Operation: Provides consistent performance in detecting specific frequencies.
- Simple Integration: Easy to interface with other electronic components and systems.
- Proven Technology: Established IC design with a history of reliable functionality.
Cons:
- Limited Functionality: Primarily designed for tone detection applications, may not suit all signal processing needs.
- External Components: May require additional components for specific system requirements.
- Package Size: The 14-pin DIP package may be larger than more modern surface-mount alternatives.
Are There Any Equivalents/Alternatives to LM1819N for Recommendation?
- An alternative to the LM1819N is the LM567 tone decoder IC from Texas Instruments.
- Equivalent parts to the LM1819N include the NE567 tone decoder and the XR2211 tone decoder.
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