TDA3845
Description
IF amplifier input 2 not connected AGC control capacitor optional capacitor (see note 10 to the characteristics) peak/mean detector capacitor AM output FM/AM switch LC reference circuit for the picture carrier LC reference circuit for the picture carrier not connected positive supply voltage 2 (+12 V); note 1 intercarrier output ground (0 V) positive supply voltage 1 (+5 V) not connected IF amplifier input 1 n.c.
Key Features
- 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 L as well as L-accent standard
- V V mA µV dB mV MIN. TYP. MAX. UNIT
