Sanyo LA7951 Specifications

Ordering number:ENN2868A

Monolithic Linear IC

LA7951

Video Switch for TV/VCR Use

Overview

The LA7951 Video Switch is a solid-state 4-input 4-output video switch ideally suited for use as a video selector switch in multiple-source video systems and multiple VCR video editing systems.

The Switching logic, coupled with built-in video amplifier, ripple filter and 75Ω output driver facilitate a minimum parts count video switching subsystem. The solidstate switches feature low crosstalk and wide bandwidth.

The LA7951 operates from a single 12V power supply, and is available in 14-pin plastic DIPs.

Features

•4-input 4-output multi-functional video switch.

•Low crosstalk, wide bandwidth.

•Internal 6 dB video amplifier.

•Ripple filter.

•75Ω output driver for video monitor (COMMON OUT).

Package Dimensions

unit:mm
3003B-DIP14
			[LA7951]
		19.0
	14		8
			7.62	6.4
				0.25
	1		7
			(3.0)	3.65max
			0.51min	3.4
(1.88)	2.54	0.48	1.2	SANYO : DIP14

Figure 1. Editing System Switch Connections

Figure 2. Video Selector Switch Connections

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

12501TN (KT)/N050JK/8258YT, TS No.2868–1/4

LA7951

Specifications

Maximum Ratings at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Maximum supply voltage	V4 max		14	V
	V6 max,		VCC
Maximum control input voltage	V9 max,			V
	V13 max
Maximum signal output current 1	I1 max		–5	mA
	I7 max,
Maximum signal output current 2	I8 max,		–20	mA
	I14max
Allowable power dissipation	Pd max	Ta≤50˚C	1.25	mW
Operating temperature	Topr		–20 to +75	˚C
Storage temperature	Tstg		–55 to +125	˚C

Operating Conditions at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Recommended supply voltage	VCC		12	V
Operating voltage range	VCC op		9 to 13.2	V

Operating Characteristics at Ta = 25˚C, VCC=12V

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	Quiescent current drain	ICC	Pins 7, 8, 14 open, pins6, 9, 13 to GND	20	27.5	37	mA
	Input pin bias voltage	V3, V5, V10, V12		2.6	3.1	3.6	V
	Output pin bias voltage 1	V1		4.6	5.3	6.0	V
	Output pin bias voltage 2	V7, V8, V14		3.3	4.0	4.7	V
	Control threshold voltage H1	V6H		2.3		VCC	V
	Control threshold voltage H2	V9H, V13H		3.0		VCC	V
	Control threshold voltage L1	V6L		0		0.8	V
	Control threshold voltage L2	V9L, V13L		0		1.5	V
	Control input current 1	I6	V6=5V		0.32	0.5	mA
	Control input current 2	I9, I13	V9=V13=5V		0	–50	µA
	Voltage gain 1	GV1	f=1MHz, VO=1Vp-p, See Note.	–0.5	+0.5	+1.5	dB
	Voltage gain 2	GV2	f=1MHz, VO=1Vp-p, See Note.	–0.7	+0.3	+1.3	dB
	Frequency characteristics	GVf	f=100kHz, VO=1Vp-p=0dB, f=10MHz, See	–3	–1		dB
			Note.
	Output noise voltage	VN	BPF=10kHz to 4.2MHz, See Note.		0.5	1.0	mVrms
	Output dynamic range 1	DR1	f=10kHz, VO=1.5Vp-p, See Note.		0.5	1.2	%
	Output dynamic range 2	DR2	f=10kHz, VO=1.5Vp-p, See Note.		1.0	2.0	%
	Crosstalk 1	CT1	f=4MHz, VO=1Vp-p, See Note.	–50	–55		dB
	Crosstalk 2	CT2	f=4MHz, VO=1Vp-p, See Note.	–20	–40		dB

Note ) Measured output terminated with 75Ω. Current flowing into IC is taken as plus (+). Parameter 1 refers to the COMMON OUT signal output and parameter 2 to the OUT1 to OUT3 signal outputs.

No.2868–2/4