Overview
The TDA9886TS/V5,112 is an alignment-free multistandard vision and sound Intermediate Frequency (IF) signal Phase-Locked Loop (PLL) demodulator produced by NXP USA Inc. This component supports PAL, SECAM, and NTSC standards and is capable of handling both positive and negative modulation, including sound AM and FM processing. It is designed for use in various television and video-related applications, offering advanced features such as true synchronous demodulation, active carrier regeneration, and integrated VIF Voltage-Controlled Oscillator (VCO) with I2C-bus control.
Key Specifications
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| VP | Supply voltage | 4.5 | 5.0 | 5.5 | V | |
| IP | Supply current | 52 | 63 | 70 | mA | |
| τP | Time constant (R × C) for network at pin VP for applications without I2C-bus | 1.2 | µs | |||
| Vi(VIF)(rms) | VIF input voltage | CL < 20 pF, RL > 1 kΩ | 5 | 6 | MHz | |
| Bv(−3dB)(trap) | −3 dB video bandwidth including sound carrier trap | ftrap = 4.5 MHz | 3.95 | 4.05 | MHz | |
| αSC1 | Attenuation at first sound carrier | f = 4.5 MHz | 30 | 36 | dB |
Key Features
- Alignment-free multistandard (PAL, SECAM, and NTSC) vision and sound IF signal PLL demodulator.
- Supports both positive and negative modulation, including sound AM and FM processing.
- Gain-controlled wideband Vision Intermediate Frequency (VIF) amplifier, AC-coupled.
- True synchronous demodulation with active carrier regeneration, providing very linear demodulation, good intermodulation figures, reduced harmonics, and excellent pulse response.
- Fully integrated VIF Voltage-Controlled Oscillator (VCO), alignment-free, with frequencies switchable for all negative and positive modulated standards via I2C-bus.
- I2C-bus control for all functions, including four selectable I2C-bus addresses.
- Sound carrier trap with three separate traps for sufficient suppression of low-frequency video signals.
- Internal voltage stabilizer and I2C-bus transceiver.
Applications
- Television (TV) systems.
- Video Tape Recorders (VTR).
- Personal Computers (PC) with TV capabilities.
- Set-Top Boxes (STB).
Q & A
- What are the supported TV standards for the TDA9886TS/V5,112?
The TDA9886TS/V5,112 supports PAL, SECAM, and NTSC TV standards.
- What type of modulation does the TDA9886TS/V5,112 support?
The component supports both positive and negative modulation, including sound AM and FM processing.
- What is the supply voltage range for the TDA9886TS/V5,112?
The supply voltage range is from 4.5 V to 5.5 V.
- How is the VIF amplifier controlled in the TDA9886TS/V5,112?
The VIF amplifier is gain-controlled through emitter degeneration and collector resistor variation, with a total gain control range of typically 66 dB.
- What is the function of the I2C-bus in the TDA9886TS/V5,112?
The I2C-bus is used to control all functions of the demodulator, including frequency selection and AGC settings.
- What is the purpose of the sound carrier trap in the TDA9886TS/V5,112?
The sound carrier trap is designed to suppress low-frequency video signals and ensure proper sound carrier separation.
- What are the typical applications of the TDA9886TS/V5,112?
Typical applications include TV systems, VTR, PC with TV capabilities, and STB.
- How does the TDA9886TS/V5,112 handle video demodulation?
The component uses true synchronous demodulation with active carrier regeneration, providing very linear demodulation and excellent pulse response.
- What is the role of the VIF-AGC detector in the TDA9886TS/V5,112?
The VIF-AGC detector is used to adapt the voltage generated at the VIF-AGC detector to the internal signal processing at the VIF amplifier and to perform tuner AGC control.
- Does the TDA9886TS/V5,112 have an internal voltage stabilizer?
Yes, the component includes an internal voltage stabilizer.
