Sanyo LA75505M Specifications

Ordering number : ENN*6930

Monolithic Linear IC

LA75505M

Adjustment Free VIF/SIF Signal Processing IC

for TV/VCR

Preliminary

Overview

The LA75505M is a VIF/SIF signal processing IC for NTSC TV/VCR. It supports the 45.75 MHz and 58.75 MHz as the IF frequencies. On-chip sound carrier trap and sound carrier BPF circuits make it ideal for compact and light-weight tuner applications. To adjust the VCO circuit, AFT circuit, and sound filter, 4-MHz external crystal or 4- MHz external signal is needed.

Functions

•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

Package Dimensions

unit: mm

3112-MFP24S
[LA75505M]
24	13
		5.4		6.35	7.6
1	12	1.8max	0.15	0.625
12.6
		1.5
0.35	1.0 0.8	0.1
	SANYO: MFP24S (300 mil)

Features

•Internal VCO adjustment free circuit eliminating need for VCO coil adjustments.

•Considerably reduces the number of required peripheral parts by providing on-chip sound carrier BPF and sound carrier trap circuits.

•Use of digital AFT eliminates problem of AFT tolerance.

•Package: MFP24S (300 mil)

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

41301RM (OT) No. 6930-1/13

LA75505M

Specifications

Maximum Ratings at Ta = 25°C

Parameter	Symbol	Conditions	Ratings	Unit
Maximum supply voltage	VCC max		7	V
Allowable power dissipation	Pd max	Ta ≤ 70°C (*Mounted on a printed circuit board)	470	mW
Operating temperature	Topr		–20 to +70	°C
Storage temperature	Tstg		–55 to +150	°C

Note: * Circuit board dimensions: 114.3 × 76.1 × 1.6 mm3, material: glass epoxy

Operating Conditions at Ta = 25°C

Parameter	Symbol	Conditions	Ratings	Unit
Recommended supply voltage	VCC		5	V
Operating voltage range	VCC op		4.5 to 5.5	V

Electrical Characteristics at Ta = 25°C, VCC = 5.0 V, fp = 45.75 MHz

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	[VIF Block ]
	Circuit current	I17			64.0	73.6	mA
	Maximum RF AGC voltage	V14H	Collector load 30 kΩ VC2 = 9 V	8.5	9	—	V
	Minimum RF AGC voltage	V14L			0.3	0.7	V
	Input sensitivity	Vi		33	39	45	dBµV
	AGC range	GR		58			dB
	Maximum allowable input	Vimax		92	97		dBµV
	No-signal video output voltage	V4		3.3	3.6	3.9	V
	Synchronizing signal tip voltage	V4tip		1.0	1.3	1.6	V
	Video output level	VO		1.7	2.0	2.3	Vpp
	Video signal-to-noise ratio	S/N		46	50		dB
	C-S beating	IC-S	P/S = 10 dB	26	32	38	dB
	Differential gain	DG	Vin = 80 dBµ		3	10	%
	Differential phase	DP			2	10	deg
	VIF input resistance	Ri			2.5	3.0	kΩ
	VIF input capacitance	Ci			3	6	PF
	Maximum AFT voltage	V13H		4.3	4.7	5.0	V
	Minimum AFT voltage	V13L		0	0.2	0.7	V
	AFT tolerance 1	dfa1	f = 45.75 MHz		±35	±45	kHz
	AFT tolerance 2	dfa2	f = 58.75 MHz		±45	±70	kHz
	AFT detection sensitivity	Sf	RL = 100 kΩ //100 kΩ	40	80	120	mV/kHz
	AFT dead zone	fda			60	100	kHz
	APC pull-in range (U)	fpu		1.0	1.5		MHz
	APC pull-in range (L)	fpl		1.0	1.5		MHz
	VCO maximum frequency range (U)	dfu		1.5	2.0		MHz
	VCO maximum frequency range (L)	dfl		1.5	2.0		MHz
	VCO control sensitivity	β		2.0	4.0	8.0	kHz/mV
	N trap1 (4.75 MHz)	NT1	wrt 1 MHz	–30	–35		dB
	N trap2 (5.25 MHz)	NT2	wrt 1 MHz	–19	–24		dB
	Group delay 1 NTSC (3.0 MHz)	NGD1	wrt 1 MHz	10	40	70	ns
	Group delay 1-1 NTSC (3.5 MHz)	NGD1-1	wrt 1 MHz	70	120	170	ns

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LA75505M

Continued from preceding page.

	Parameter	Symbol		Conditions		Ratings		Unit
					min	typ	max
	[1st SIF Block]
	Conversion gain	Vg	fp = 4.5 MHz, Vi = 500µV		26	32		dB
	SIF carrier output level	So	Vi = 10 mV			100		mVrms
	First SIF maximum input	Simax	So ±2 dB			106		dBµV
	First SIF input resistance	Ris				5.0	6.0	kΩ
	First SIF input capacitance	Cis				3	6	pF
	[SIF Block]
	Limiting sensitivity	Vi(lim)	fp = 4.5 MHz,	F = ±25 kHz at 400 Hz			61	dBµV
	FM detector output voltage	Vo(FM)			480	600	750	mVrms
	AM rejection ratio	AMR	AM = 30% at 400 Hz		50	60		dB
	Total harmonic distortion	THD	f = 4.5 MHz,	F = ±25 kHz		0.5	1.0	%
	FM detector output S/N	S/N(FM)			55	60		dB
	BPF 3-dB bandwidth	BW				±100		kHz
	NTSC de-emphasis	Ndeem	fm = 2 kHz			–3		dB
	[Others]
	4-MHz level (during external input)	X4MIN	Terminated		86			dBµ
	IF system SW threshold resistance	V12					270	kΩ
	Split/inter SW	V16				0.5		V

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LA75505M

System Switching

•IF system switch

45.75MHz is selected as the IF frequency by leaving pin 12 (crystal oscillation) open. 58.75 MHz is selected by adding 220 kΩ between pin 12 and GND.

•Split/inter carrier switch

Inter carrier is selected by setting the first SIF input (pin 16) to GND.

Pin Assignment

SIF INPUT	1		24	FM DET OUT
FM FILTER	2		23	RF AGC VR
1st SIF OUT	3		22	SIF PLL FILTER
VIDEO DET OUT	4		21	FILTER CONTROL CAPACITOR
EQ OUT	5		20	VIF INPUT
APC FILTER	6	LA75505M	19	VIF INPUT
FLL FILTER	7		18	GND
VCO COIL	8		17	VCC
VCO COIL	9		16	1st SIF INPUT
SIF AGC FILTER	10		15	IF AGC FILTER
NC	11		14	RF AGC OUT
REF OSC	12		13	AFT OUT

Top view

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