Sanyo LA7674 Specifications

Ordering number : ENN4361

Monolithic Linear IC

LA7674

Color TV Single-Chip Signal Processor for NTSC Systems (PLL Detection)

Overview

The LA7674 improves upon the black-level, horizontaljitter, switch-on drift performance of the single-chip LA7672 used to date. Also a single-chip IC, the LA7674 is for color TVs based on the NTSC (National Television System Committee) system with an on-chip circuit for all VIF, SIF, video, chroma and deflection signal processing.

Functions and Features

[VIF]

•PLL detection (high video and audio quality)

•High-gain VIF amplifier

•High speed AGC

•On-chip APC time constant switch

[SIF]

•Simultaneous sound IN/OUT

•Video/audio simultaneous muting, or audio-only muting possible

[Audio-visual switch]

• Internal/external audio-visual switch (VCC = 9V)

Delay line	Video external, audio external	Switch rating
OFF	IN	6.9 to 9.0V
OFF	EXT	4.7 to 6.6V
ON	EXT	2.4 to 4.3V
ON	IN	0 to 2.1V

[OSD]

•RGB 3 input

•RGB linear amplifier (– 6dB input: 2V to 5V)

•Fast blanking (B input combined use)

[Chroma]

•On-chip ACC filter, On-chip killer filter, Killer-circuit hysteresis operation

•On-chip carrier filter

[Video]

• Black enhancement

•DC playback

•On-chip delay line

•Wide band width (9MHz): delay line short

•Dual rank on-chip differentiation circuit also available for soft also

•S input supported (VCR application)

•Variable DC transmission volume available (externally attached circuit adjustment)

[Deflection]

•Adjustment-free horizontal, vertical synchronization

•Dual AFC system with excellent anti-noise characteristics

•External adjustment of vertical synchronization sensitivity

•Vertical size is constant with no-signal

•Highly stable image during playback of copy protected tapes (macro-vision tape etc.)

•High stability against VCR skew distortion

Package Dimensions

unit: mm

3128-DIP52S
	[LA7674]
52			27
			15.24	13.8
					0.25
1			26
46.0
				4.25	5.1max
					3.8
0.48	1.05	1.78	0.75	0.51min
			SANYO: DIP52S

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

71599RM (OT)/41893TS A8-9533 No. 4361-1/6

LA7674

Specifications

Absolute Maximum Ratings at Ta = 25° C

	Parameter	Symbol	Conditions	Ratings	Unit
	Maximum supply voltage	V11 max		11	V
		V14 max		11	V
	Maximum supply current	I30max		16	mA
	Allowable power dissipation	Pd max	Ta ≤ 60°C	1.35	W
	Operating temperature range	Topr		–10 to +65	°C
	Storage temperature range	Tstg		–55 to +150	°C
	Circuit current	I44		–6	mA
		I6		–3	mA
	FBP input current	I22 max	Peak current	5	mA
		I21 max	Peak current	10	mA

Operating Conditions at Ta = 25° C

Parameter	Symbol	Conditions	Ratings	Unit
Recommended supply voltage	V11		9	V
	V14		9	V
Recommended supply current	I30		13	mA
Operating voltage range	V11op		8 to 9.5	V
	V14op		8 to 9.5	V
Operating current range	I30op		10 to 16	mA

Operating Characteristics at Ta = 25°C, VCC = V11 = V14 = 9 V, ICC = I30 = 13 mA

	Parameter	Symbol		Conditions			Ratings		Unit
						min	typ	max
	[Circuit Voltage and Current]
	Horizontal supply voltage	V30	VCC = 9V, ICC = 13mA			7.3	7.8	8.3	V
	Supply current	I11 + 14	VCC = 9V, ICC = 13mA, IF AGC 4V			102	120	138	mA
	[VIF]
	Quiescent video output voltage	V44	Quiescent			4.3	4.7	5.1	V
	Quiescent AFT output voltage	V47	Quiescent			3.1	4.7	6.1	V
	Maximum RFAGC voltage	V49H	CW = 85dBµ, RFAGCVR = min			7.6	8.0	8.3	V
	Minimum RFAGC voltage	V49L	CW = 85dBµ, RFAGCVR = max			0	0.01	0.3	V
	Input sensitivity	Vi	VIF input level for video output at 0.8Vp-p			33	39	45	dBµ
			(40% mod).
	AGC range	GR	Maximum input (V0 = 0.8Vp-p) - input sensitivity			54	62	70	dB
	Maximum permissible input	Vi max	VIF input level for video output at +1dB			97	104	111	dBµ
	Video output detection	VO44	Vi = 80dBµ, AM = 78% mod			1.7	2.0	2.3	Vp-p
	Differential gain	DG	Vi = 80dBµ, AM = 87.5%, video mod				3.0	10	%
	Differential phase	DP	Vi = 80dBµ, AM = 87.5%, video mod				1.0	10	DEG
	Video S/N	S/N	Vi = 80dBµ, 20 log	1.46 (Vp-p)		47	54	61	dB
				noise (Vrms)
	Synchronization signal tip level	V44 TIP	CW = 80dBµ			2.1	2.4	2.7	V
	Frequency characteristic	fC	Frequency at video output of –3dB			6.0	9.0	12.0	MHz
	920 kHz VIF intermodulation	I920	V3.58MHz/V920kHz, Vi = 80dBµ			35	42	49	dB
	Maximum AFT output voltage	V47H	CW = 80dBµ, frequency change			8.3	8.7	9.0	V
	Minimum AFT output voltage	V47L	CW = 80dBµ, frequency change			0.1	0.3	0.8	V
	AFT detection sensitivity	Sf	CW = 80dBµ, frequency change			45	70	100	mV/kHz
	AFT switch operation start voltage	VAFTSW	Measuring with sweep signal			0.5	1.0	1.5	V
	Black noise threshold level	VBTH	Measuring with sweep signal			1.1	1.4	1.7	V
	APC pull-in range (U)2	fPU-2	CW = 80dBµ, fP = 53MHz to 64MHz			0.8	1.7	4.0	MHz
	APC pull-in range (L)2	fPL-2	CW = 80dBµ, fP = 53MHz to 64MHz				–2	–1	MHz
	VCO maximum variable range	fU	Quiescent			0.9	1.7	4.0	MHz
		fL	Quiescent			–4	–2	–1	MHz
	VCO control sensitivity	β	Quiescent			1.5	3.0	5.5	kHz/mV

Continued on next page.

No. 4361-2/6