AN6337 VTR Playback Video Signal Processing Circuits 5V IC DIP-22
The AN6337 is a specialized integrated circuit developed primarily for use in VTR (Video Tape Recorder) playback sections, where it handles the processing of recorded video signals. This IC integrates multiple analog signal processing stages required for playback, such as amplification, equalization, clamping, and filtering, ensuring that the reproduced video signal maintains proper amplitude, timing, and quality. It is designed to work with composite video signals extracted from magnetic tape heads.
This IC simplifies VTR circuit design by combining several discrete components into a single DIP-22 package, reducing board complexity and improving reliability. It plays a crucial role in restoring degraded signals during playback, compensating for frequency losses, and stabilizing sync levels. The AN6337 is commonly found in legacy VHS players, video decks, and analog video processing equipment.
Features:
- Integrated video signal processing for VTR playback.
- Built-in equalizer for frequency compensation.
- Internal clamping circuit for stable video levels.
- High-quality video amplification stages.
- Reduced need for external components.
- Designed for composite video signal handling.
- Stable and reliable analog processing performance.
- Optimized for magnetic tape playback systems.
Specifications:
| Item | Symbol | Test Circuit | Condition | min. | typ. | max. | Unit |
|---|---|---|---|---|---|---|---|
| Circuit current (1) | I13(1) | 1 | Pin® GND(V-Vmode) | 35 | 65 | mA | |
| Circuit current (2) | I13(2) | 1 | Pin® Vcc(E-E mode) | 20 | 40 | mA | |
| Demodulator detection sensitivity | S12 | 2 | C=47pF, R12=900Ω, f=3.5~4.5MHz | 80 | 140 | mV/MHz | |
| Demodulator detection limit | f(lim) | 2 | C=47pF, Input 0.1VP−P | 7.0 | MHz | ||
| Demodulator carrier leak (1) | CL12−1 | 3 | C=47pF, 4MHz, 0.1VP−P, Input | -30 dB | dB | ||
| Demodulator carrier leak (2) | CL12−2 | 4 | C=47pF, 4MHz, 0.2VP−P, Input | -30 dB | dB | ||
| Video amp. gain | GV18−19 | 5 | 100kHz, 1.2VP−P, Input | 3.2 | 6.4 dB | dB | |
| Chroma amp. gain | GV17−19 | 6 | 7.2 | 10.8 dB | dB | ||
| Noise canceller mix amp. gain | GV15−19 | 7 | 1MHz, 0.7VP−P, Input | -10.8 | -7.2 dB | dB | |
| Noise canceller amp. gain | GG16−14 | 7 | 1MHz, 30mVP−P, Input | 18.2 | 21.8 dB | dB | |
| Noise canceller amp. output amplitude | U014 | 7 | 1MHz, 0.7VP−P, Input | 0.5 | 0.83 VP−P | dB | |
| E-E amp. gain | G20−19 | 6 | 100kHz, 0.7VP−P, Input | 7.9 | 11.5 dB | dB | |
| Sync. sep. input sensitivity | S22 | 8 | Video Input, V/S ratio5:2 | 0.4 | VP−P | ||
| Sync. Sep. output amplitude | U01 | 8 | 3.0 | 4.6 VP−P | V | ||
| E-E/V-V select sensitivity | S9−1 | 9 | STB→V-V | 0.8 V | V | ||
| Input sensitivity (STB) | S9−2 | 9 | 2.2 | 2.8 V | V | ||
| Muting sensitivity | S17 | 10 | 0.8 V | V | |||
| E-E/V-V cross talk | CT19−1 | 9 | Pin® Input, 3MHz, 0.7VP−P | -40 dB | dB | ||
| Muting cross talk | CT19−2 | 10 | Pin® Input, 1MHz, 1.2VP−P | -40 dB | dB |
Pinout:
| Pin No. | Pin Name | Pin No. | Pin Name |
|---|---|---|---|
| 1 | Sync. Sep. Output | 12 | FM Demod. Output |
| 2 | Sync. Sep. Peak Det. | 13 | Vcc |
| 3 | FM-Sub Limiter Cap. (1) | 14 | Noise Canceller Output |
| 4 | FM-Sub Limiter Cap. (2) | 15 | Noise Canceller Mix Amp. |
| 5 | FM-Sub Limiter Input | 16 | Noise Canceller Input |
| 6 | FM-Main Limiter Input | 17 | Video Amp. Color Input |
| 7 | FM-Main Limiter Cap. (1) | 18 | Video Amp. Y Input |
| 8 | FM-Main Limiter Cap. (2) | 19 | Video Amp. Y/C Output |
| 9 | Mode Select SW | 20 | E-E, Amp. Input |
| 10 | FM Demod. Cap. (1) | 21 | GND |
| 11 | FM Demod. Cap. (2) | 22 | Sync. Sep. Input |
Applications:
- VHS players and VCR systems.
- Video tape playback decks.
- Analog video processing equipment.
- CCTV recording/playback systems (legacy).
- Broadcast video restoration systems.
Package Includes:
- AN6337 VTR Playback Video Signal Processing Circuits 5V IC DIP-22.