The TDA3845 is a quasi split-sound IF circuit which is designed to provide high performance television FM/AM sound. QUICK REFERENCE DATA SYMBOL VP1 VP2 IP V1-16(RMS) V12-13(RMS) (S +W)/W pin 14 pin 11 (not for TDA3845T) supply current minimum IF input voltage (RMS value) IF control range intercarrier output voltage 5.5 MHz (RMS value) signal-to-weighted-noi.
• Power supply from 5 V (200 mW) to 8 V source also an alternative 12 V source (12 V not for TDA3845T)
• Gain controlled wideband IF amplifier (AC coupled with three stages)
• High precision internal 90° phase shifter for quadrature demodulator
• Amplitude detector for gain control which operates as a peak detector for FM sound and as a mean level detector for AM sound (switchable)
• In-phase wideband synchronous demodulator for AM detection
TDA3845; TDA3845T
• Stabilizer circuit for ripple rejection and constant output signals
• ESD protection for all pins
• Suitable for all FM standards and.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | TDA3845 |
NXP |
Quasi split-sound circuit and AM demodulator | |
2 | TDA3840 |
Philips |
TV IF Amplifier and Demodulator | |
3 | TDA3842 |
Philips |
Multistandard TV IF amplifier and demodulator | |
4 | TDA3843 |
NXP |
Sound-IF circuit for TV AM-sound standard L and L | |
5 | TDA3800G |
ETC |
STEREO/DUAL TV SOUND PROCESSING CIRCUITS | |
6 | TDA3800GS |
ETC |
STEREO/DUAL TV SOUND PROCESSING CIRCUITS | |
7 | TDA3803A |
NXP |
Stereo/dual TV sound decoder circuit | |
8 | TDA3810 |
NXP |
Spatial/ stereo and pseudo-stereo sound circuit | |
9 | TDA3825 |
NXP |
Single FM TV-sound demodulator circuit | |
10 | TDA3827 |
NXP |
TV-sound demodulator circuit with SCART switches and AF control | |
11 | TDA3833 |
NXP |
BTSC-stereo/SAP/DBX decoder and DBX expander | |
12 | TDA3853T |
NXP |
TV IF amplifier and demodulator with TV-identification |