LA75503V

Features:

• VIF amplifier
• VCO adjustment free PLL detection circuit
• Digital AFT circuit
• RF AGC
• Buzz canceller
• Equalizer amplifier
• Internal sound carrier BPF
• Internal sound carrier trap
• PLL-FM detector
• Reference oscillation circuit




Pinout






Specifications

Parameter	Symbol	Conditions	Ratings	Unit
Maximum supply voltage	VCC max		7	V
Circuit voltage	V16		VCC	V
	V18		VCC	V
Circuit current	I30		1	mA
	I17		+0.5	mA
	I6		10	mA
	I4		3	mA
Allowable power dissipation	Pd max	Ta70 (*Mounted on a printed circuit board)	550	mW
Operating temperature	Topr		20 to +70
Storage temperature	Tstg		55 to +150

Description

The LA75503V is an adjustment free VIF/SIF signal processing IC for PAL TV/VCR. It supports 38 MHz, 38.9 MHz, and 39.5 MHz as the IF frequencies, as well as PAL sound multi-system (M/N, B/G, I, D/K), and contains an on-chip sound carrier trap and sound carrier BPF. To adjust the VCO circuit, AFT circuit, and sound filter, 4-MHz external crystal or 4-MHz external signal is needed.