LA7958

Ordering number : ENA0260 Monolithic Linear IC LA7958 Overview For TV, VTR Audio/Video Switch This LA7958 is a Audio/Video Switch for TV, VTR. Functions • Audio: Possible to Change 4 Channel×2 • Video: Possible to Change 4 Channel, 6dB Amplifier, Y+C Amplifier Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC V max Pd max Topr Tstg Pin 8 Ta ≤ 70°C Conditions Ratings 13.2 300 -20 to +70 -55 to +150 Unit V mW °C °C Operating Conditions at Ta = 25°C Parameter Recommending operation voltage Operating voltage range Symbol VCC VCC op Pin 8 Pin 8 Conditions Ratings 9.0 8.0 to 12.0 Unit V V ■ Any and all SANYO Semiconductor products described or contained herein do not have specifications ■ SANYO Semiconductor assumes no responsibility for equipment failures that result from using products 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 Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. 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 Semiconductor products described or contained herein. N2206 MS OT B8-4988 No.A0260-1/7 LA7958 Electrical Characteristics at Ta = 25°C, VCC = 9V Parameter Current dissipation Audio Block Audio input DC voltage Audio output DC voltage Audio channel bandwidth Audio signal voltage gain Audio input dynamic range Audio channel PSRR Audio channel input impedance Audio channel output impedance Audio channel crosstalk Audio channel S/N Audio channel THD Video Block Video input DC voltage Video output DC voltage Video channel bandwidth Video signal voltage gain Video input dynamic range Video channel PSRR Video channel input impedance Video channel output impedance Video channel crosstalk Video channel noise Y, C Mixer Y input DC voltage C input DC voltage Y+C signal voltage gain Differential gain Differential phase Mode Selection Block Mode selection threshold voltage Vmth 2.2 2.6 3.0 V INy INc Ayc DG DP Yin = 1Vp-p, Cin = 0.3Vp-p 4.0 4.0 5.0 4.3 4.3 6 2.0 1.0 4.6 4.6 7.0 3.5 2.0 V V dB % deg INv Ov Fv Av Dv PSv Riv Rov CTv SNv f = 3.58MHz, VIN = 1Vp-p Bandwidth 10MHz -3dB frequency f = 500kHz, VIN = 1Vp-p f = 100kHz, THD ≤ 1% SINE WAVE (50Hz) 4.0 3.2 10 5.0 2.0 35 8.0 29 45 57 6.0 2.5 50 10 37 60 62 12.0 48 7.0 4.3 3.6 4.6 4.0 V V MHz dB Vp-p dB kΩ Ω dB dB INa Oa Fa Aa Da PSa Ria Roa CTa SNa THDa f = 1kHz Filter = DIN/AUDIO f = 1kHz, VIN = 500mVrms -3dB frequency f = 1kHz, VIN = 500mVrms f = 1kHz, THD ≤ 1% VCC = 9V+1Vp-p, SINE WAVE (50Hz) 4.0 3.2 100 5.0 2.0 35 80 40 65 70 6.0 2.5 50 100 50 80 85 0.15 0.3 120 65 7.0 4.3 3.6 4.6 4.0 V V kHz dB Vp-p dB kΩ Ω dB dB % Symbol ICC Conditions VCC = 9V, No signal Ratings min 11.2 typ 14.0 max 16.8 Unit mA No.A0260-2/7 LA7958 Logic True Table Video-Output A : Pin 11 L H L H VTV = (-A)*(-B) V2 = (-A)*(B) Y+C = (A)*(B)*(C=L) B : Pin 13 L L H H C : Pin 15 L VTV V1 V2 Y+C V1 = (A)*(-B) V3 = (A)*(B)*(-(C=L))/Y=(A)*(B)*(-(C=L)) OPEN VTV V1 V2 V3/Y H VTV V1 V2 V3/Y Audio-R-Output A : Pin 11 L H L H RTV = (-A)*(-B) R2 = (-A)*(B) B : Pin 13 L L H H C : Pin 15 L RTV R1 R2 R3 R1 = (A)*(-B) R3 = (A)*(B) OPEN RTV R1 R2 R3 H RTV R1 R2 R3 Audio-L-Output A : Pin 11 L H L H LTV = (-A)*(-B) L2 = (-A)*(B) B : Pin 13 L L H H C : Pin 15 L LTV L1 L2 L3 L1 = (A)*(-B) L3 = (A)*(B) OPEN LTV L1 L2 L3 H LTV L1 L2 L3 Package Dimensions unit : mm 3010A 22 12 10.16 8.6 1 27.2 11 4.25 3.1 4.95max 0.9 2.54 0.5 1.2 SANYO : DIP22(400mil) 0.51min 0.25 No.A0260-3/7 LA7958 Pin Assignment Block Diagram No.A0260-4/7 LA7958 No. 1 Parameter Video signal voltage gain (Av) Q : Pin 16 VIN = 1Vp-p Input inpedance 75kΩ Av = 20 log Vout/VIN (dB) Explanations P : Pins 7, 9, 12, 19 Test circuit 2 Video channel bandwidth (Fv) P : Pins 7, 9, 12, 19 Q : Pin 16 VIN = 1Vp-p A frequency which becomes -3dB is measured. 3 Video channel noise (SNv) P : Pins 7, 9, 12, 19 Q : Pin 16 4 Video channel crosstalk (CTv) P : Pin 7 (Pins 9, 12, 19) O : Pins 9, 12, 19 (Pin 7) Q : Pin 16 5 Video channel PSRR (PSv) Pin 8, f = 50Hz VIN = 1Vp-p P : Pins 7, 9, 12, 19 Q : Pin 16 6 Audio signal voltage gain (Aa) P : Pins 1, 2, 3, 4, 5, 6, 21, 22 Q : Pins 17, 18 VIN = 500mVrms Aa = 20 log Vout/VIN (dB) Continued on next page. No.A0260-5/7 LA7958 Continued from preceding page. No. 7 Parameter Audio channel bandwidth (Fa) Explanations P : Pins 1, 2, 3, 4, 5, 6, 21, 22 Q : Pins 17,18 VIN = 500mVrms A frequency which becomes -3dB is measured. Test circuit 8 Audio channel THD (THDa) It's the same Audio Signal Voltage Gain measurement circuit. 9 Audio channel S/N (SNa) P : Pins 1, 2, 3, 4, 5, 6, 21, 22 Q : Pins 17, 18 10 Audio channel crosstalk (CTa) P : Pins 2, 3, 4, 5, 6, 21, 22 Q : Pins 17,18 11 Audio channel PSSR (PSa) Pin 8, f = 50Hz VIN = 1Vp-p P : Pins 1, 2, 3, 4,5, 6, 21, 22 Q : Pins 17, 18 No.A0260-6/7 LA7958 Test Circuit Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of Novemver, 2006. Specifications and information herein are subject to change without notice. PS No.A0260-7/7