: LSE D i 4180798 O0022be2 af SHARP ELEK/ MELEC OIV AV Switch - . T-77-21 IR3P76 IR3 P76 avswitcn M@ Description Hi Pin Connections The IR3P76 is an analog switch IC for a televi- sion. It incorporates one video line and two audio . _- lines (L and R), each of which has five inputs and Aor [1] O P30} Amuttt. -three outputs. It permits those three lines to be : Ao mani t [2 aa] Ast switched simultaneously. The switches consist of a Ao nonter. Fi) Aa 4-contact switch which selects one from the TV in- O monitor Le A put and three external inputs and sends it to each me Cy 27 A. output, and a 2-contact switch which switches be- ig 26] Arvi tween the selected inputs and the multi-inputs and Vs [6 25] Vorv sends either of them to the output for a television. C 7 24] GND ve. BI [23] Vo muti : Vee [9] [22] MUTE HM Features Vi fj [21] Vo monitor 1. Video frequency, 26MHz (TYP.) G Gy [20] Arve 2. Video crosstalk, 55dB (TYP.) Vv [2 fi9] Air 3. Audio line Ao monitor 8 {13} fia] Azr Input: 3 pins X 2 for external input, . Ao mutt n [ial [17] Agr 1 pin X 2 for multi-input, Ao monitor 8 [15] 16] Anutti k 1 pin X 2 for TV input . __ Output: 1 pin X 2 for multi-pin output, 1 pin X 2 for monitor output, x Top View 1 pin X 2 for TV output 4, Video line Input: 3 pins for external input, 1 pin for multi-input, 1 pin for TV input Output: 1 pin for multi-pin output, 1 pin for monitor output, 1 pin for TV output 5. Mode svitching input 6. Sound mute 7. Amplifier for 6dB in video and 3dB in audio 8. 30-pin shrink dual-in-line package SHARP 370a A, SHARP ELEK/ MELEC DIV | use o ff azanzsa cooz2ea 1 &f AV Switch IRSP76 M@ Block Diagram CAV 30 Ao multi L AotvL Aoaulti L 29) Ast. 28) Aa 27) Ai 26) Arvi Agmonitor L Vonutti 25) Votv Va 23) Vo multi Val 8 21) Vo monitor Vi 20) Atvr 19) Air 18) Azr 17) Aar Ao monitor R Ao multi R WAMU J Aorvre 16) Amulti R Vee . GND Decoder MUTE Ci SHARP 371 ealSHARP ELEK/ MELEC DIV 8 0 J aiacz9a ooozens iff i AV Switch p77-21.SCIRSP76 2 A es ens es acerca Sy OE M Pin Description Pin No. Symbol Description Pin No. Symbol Description 1 Aorv. Audio output (L) for TV 16 Amuti R Audio multi input (R) 2 Ao muti L Audio output (L) for multi-pin 17 Agr Audio external input 3 (R) 3 Ao monitor L Audio monitor output (L) 18 Aor Audio external input 2 (R) 4 Vautti Video multi input 19 Air Audio external input 1 (R) 5 CAV AV contro! 20 Arve Audio TV input (R) 6 V3 Video external input 3 21 Vo moni Video monitor output 7 Ce Control 2 22 MUTE Audio mute 8 Ve Video external input 2 23 Vo mutt" | Video output for multi-pin 9 Vec Power supply 24 GND Ground 10 Vi Video external input 1 25 Vorv Video output for TV 11 Cy Control 1 26 Arvt Audio TV input (L) 12 Viv Video TV input 27 Aut - Audio external input 1 (L) 13 Ao monitor k | Audio monitor output (R) 28 Aor Audio external input 2 (L) 14 Ao muti R Audio output (R) for multi-pin 29 Agi Audio external input 3 (L) 15 Aorvr Audio output (R) for TV 30 Autti L Audio multi input @) Mi Absolute Maximum Ratings (Ta=25) Parameter Symbol Conditions Rating Unit Supply voltage Veco 15 Vv Input signal voltage Vin . : 5 ; Vp_p Power dissipation Pp Tas25C 13 Ww Pp derating ratio APy/C Ta>25C : 13.0 mW/T Operating temperature Topr 20~65 Cc Storage temperature Tstg 55~150 Cc Mi Electrical Characteristics (Unless otherwise specified: Ta= 20~65C, Vec=8~13V) Parameter Symbol Conditions MIN. TYP. MAX. Unit Operating supply voltage Vee 8 9 13 v Current consumption Tec Vec=9.0V a7 33 50 mA Mode switching threshold Vin : voltage (MODE) 1.5 1.9 25.| V Mode switching input resistance} Rc : 20 35 ka Video section Video input impedance Zy 100kHz sine wave 1Vp.p input 9 15 23 ka Video output impedance Zov 100kHz sine wave * : 20 40 a Video gain Gy APL 50% stair step wave 1Vp.p 5 6 7 dB a: Vec=9.0V APL10~90% Allowable video input Viv Point at stair step wave5% 1.8 2.2 Vp.p Differential gain De Input 1Vp.p 3 % Differential phase Dp Input 1Vp.p : 3 .-| deg ie Vo (100kHz) =0dB Video frequency characteristic fay Point at34B 1Vp.p input 10 26 MHz Vec=9.0V, Ta=25T Video crosstalk Cy 15 MHz 1Vpp input 50 55 dB SHARP 372 ner rannemn A lian! TRRMRIARONSHARP -ELEK/ MELEC DIV L5 0 ff a1so7%8 cooeees 3 fj AV Switch 7-77-21 IR3P76 A ET SS AY ES OS YY RY ST LT TY TT TT TY Parameter | Symbol | Conditions | MIN. | Typ. | MAX. | Unit Audio section : Audio input impedance Zia 1kHz Sine wave 0.5Vyms input 32 50 68 kQ Audio output impedance Zoa 1kHz Sine wave * 20 50 a Audio gain Ga 1kHz 0.5Vims 2 3 4 dB Vec=9.0V, 1kHz r Allowable audio input ~ Via Point at which 1kHz output resulty 1.5 1.7 - Vans in 1% distortion Total harmonic distortion THD 1kHz 0.5Ving Input 0.1 0.5 % Audio frequency fea Vo (IkHz)=0dB 100 kHz Point at3dB, 0.5Vins input Between each mode Ta=25C, Audio crosstalk (1) Car 100Hz~20kHz 60 80 dB 0.5Vims . Between L and R, Ta=25T Audio crosstalk (2) Caz 100Hz~20kHz, 0.5Veme ; 70 80 dB Sound mute effect Ta=25U, 100H2~20kHe 70 85 dB 1Vims Input Mute input resistance. Rm When muting 20 30 kQ Vin , . . . . Vv Mute threshold voltage (MUTE) 1.8 2.4 3.3 Audio DC offset (1) Vost Mode switching 50 0 +50 mV Audio DC offset (2) Vos2 Mute operation 50 0 +50 mV * Make measurements at such an input level as free from the distortion of the output waveform with R connected. J UIT SHARP 373 iSHARP ELEK/ MELEC OIV ase o ff s1aczq8 coozzee 5 ff AV Switch 7-77-21 IR3P76 (SK ES A A a eee NT SO EE EO SY A HE Test Circuit (1) Test circuit for video Input impedance ~ (2) Test circuit for audio input impedance (for the audio L side) Vix=100kHz 1Vp-p_ input CXOOLOG b a 3 + 10hF R IR3P76 tf fe 150uF 0.068 uF Vin=1kHz 0.5Vims input BDBOADO Hever . 3.3uF R IR3P76 TI f Test method : Test the resistance when the waveforms at the points a(Vpy) and b"(V) satisfy V/Vin=0.5 with the input signal Vj entered. 3 NW 150uF 0.068 uF- (3) Test circuit for video output impedance (4) Test circuit for audio output Impedance (for audio L side) Vix =100kHz + 100uF _Vin=lkHz 10uF YO @ R 3.3.F Vee | TO PF it 150 uF 0.0684 ty / 150 pF 0.068 uF Test method : Test the resistance when the waveforms Vo and V which are monitored when the input signal Viy is entered with the resistor R on the output side removed and connected, respectively, satisfy V/Vo= 0.5, Note) Control the input level so that the waveform may not be distorted when R is connected. (5) Test circuit for Input resistance of mode switching and mute pin Mode switching, terminal OX) Test method : Apply voltage to the input pin to be tested, read the current, and then obtain the resistance from VA= R. SHARP 374 LANE USE APeee ed SHARP ELEK/ MELEC DIV LSE-D J 810798 oooa2e? 2 IR3P76 AV Switch na T-77-21 EE) GE Ge) Ge A ee ey a ST AY Sy (7) Test circuit for audio crosstalk (6) Test circuit for video crosstalk , (for the audio L side) Vix=20kHz 1.F (Tantalum) Vin= + : 26 a . 10uF(Tantalum) 3.3uF 1X33 Spectrum AG2) + = no analyzer Spectrum * ONGRYIGD 47k il 2 3.3uF h ve IR3P76 9 Veco 150uF Za + 150uF Toe f i (8) Test circuit for video frequency character- -(9) Test circuit for audio frequency (for the audio L side) istic Vin =100kHz a | SHARP 375SHARP ELEK/ MELEC DIV LSE D ] 6140798 O002cb8 aff AV Switch _T-77-21 IR3P76 Mi Basic Connection Diagram ( . ) I. . uF 4 23uF Aotvi - 1 30} JO Ao matt L 4.7k08 LE Oo 33uF ; Ao al & 29} Ho Ast 4.7kQ 3 uF 33uF Ao monitor oe FS oe) Aa 4,.7kQS 33 10uF | ue Veutt O_f*-{7] 27} jo Au. 3.34F cAvo___-_f5| 26 Arve 10yF 470 uF vio _#-[ B Vorv 8 2.7k0 C0] 7] 24 fe 10F , IR3P76 _A10aF - Vv20-_-_-_f- {3 23 Vo multi S2.7k2. Vec 9 {22} _-O MUTE 150nF : 0.068.F * Y4 + + 470uF vio-_#{ fio) 21 Vo monitor 10uF S 2.7k0 Goi 2} o Ava o__# osu fig} #0 Aur 4.7kQ 8 3.3uF A nostort is} Hohn 4. ee ee (B3uk Ao wuhti ae a 17 Asr 4.7kQ$ 3.3 ,F Aotyr 6} A-0 Anansi R SHARP 376 Rae FANN 19 Homa eee SHARP ELEK/ MELEC DIV LSE o ff azaozsa oooz2n5 off AV Switch | 7-77-21 IR3P76 Hi Controi Mode Table a Control input Video Audio(L) Audio(R) Cay Cy Co Vory | Vomulti [Vomonitor} Aorvi | AomultiL Aqmonitor L] Aorve | AomultiR |Aomonitor R 5 il 7 25 23 21 1 2 3 15 14 13 L L L TV TV TV TV TV TV TV TV TV L H L P, Py _ P. 1 P, . P, P, _ L L H Pe P2 P, P2 P2 P, P, P2 P. L H H P; P; P; P; P, P; Ps Ps P; H L L P TV TV P TV TV P TV TV H H L P P, _ P Pi _ P P, _ H L H P P2 Pe P P2 P2 P P2 PZ H H H P P3 Ps P Ps Ps P Ps P3 + T VITYV, ATVL, ATVR Note: Wheri the P, mode is selected with C}=H and C2 *P; Vi Aw Air =L, no output is mode to the monitor output terminals + Py Vo, Aas Agr (Vo moniter, Ag monitor L and Ag monitor R.) + Py Vs, Agu. Agr + P _V multi, A multi L and A multi R . @ Electrical Characteristic Curves Current consumptionSupply voltage Voltage gainFrequency (Video) 60 a # 50 8 | ica) s 40 > _" 6 2 sob g-2 2 .Ys) i= & 20 & 4 3 Ta | a E 10 Ta=25C > 4 Vec=9V 7= a3 oO = 0 t eneeene 8 10 12 14 100k 1M 10M 100M Supply voltage : Vcc (V) Frequency :f (Hz) Voltage gain Frequency (Audio) Crosstalk Frequency (Video) 2 a a > 9 _3 & a . Oo os ad ~ & a 2 9LTa= Cc % Vec=9V | 8 3 Q S 4 | 100 1k 10k 100k 10k 100k. 1M 10M _ Frequency : f (Hz) Frequency : f (Hz) SHARP 377ll eoorwrwrererereeeeee | SHARP ELEK/ MELEC DIV use 0 ff 8180794 oooee7a. 7 AV Switch 1-77-21 IRSP76- @ = Application Circuit Example (1) Video section _ANT Tuner Ci, Ce IF circuit Viv IR3P76 Input Output. Video 1 input > Vi Video 2 input Ve _ Video 3 BS input o Va tuner g an 2 3 Vo multi Vv a] 8 25" & 5 . a 5 =V mutti 3 n Video RGB 23 38 chroma [>] V/F SB) 3B circuit circuit Ss Teletext adapter / RGB multi (21 pins) CAV AV television SHARP 378 rere ences ATR PRNro mI Sree PEA SERIO AV Switch / EE A SE SE EY AY A EY EY Ms (2) Audio Section SHARP ELEK/ MELEC DIV LSE DO i 4140794 O00de?71 aff T-77-21 ANT juner Ci, C2 circuit IR3P76 Audio Audio output input y e Teletext adapter RGB multi (21 pins) Amott. BO) AV television SHARP IR3P76 vow a7 379 \~ ut