Ordering number : ENA0783 Monolithic Linear IC LA72910V FM Modulator and Demodulator IC Overview The LA72910V is a FM modulation and demodulation single-chip IC. Its adjustment free modulation/demodulation circuit significantly reduces the number of peripheral circuits required and can contribute to lower production costs. Functions • Video signal FM modulation and demodulation • Video signal emphasis and de-emphasis function • Drop-Out detecting function of Video FM signal • FM mute function at Second-Call Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol Conditions Ratings Unit VCC max 7.0 V Pd max 300 mW Operating temperature Topr Storage temperature Tstg Ta ≤ 70°C * -30 to +70 °C -40 to +150 °C When mounted on a 114.3mm × 76.1mm × 1.6mm, glass epoxy. Recommended Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Allowable operating voltage range Symbol Conditions VCC VCC op Ta = -30 to +70°C Ratings Unit 5.0 V 4.7 to 5.5 V Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 41907 MS PC 20070419-S00005 No.A0783-1/10 LA72910V Electrical Characteristics at Ta = 25°C, VCC = 5V DC CHARACTERISTICS T6 = 0.4V, T9 = 2.0V, T10 = 0.4V Parameter OUT Ratings Symbol In Conditions Control terminal CNT6L T6 Low level of control terminal of ALL mode. (Pin6,9) Low level CNT9L T9 T6 = 0.4V(DEMOD mode), Control terminal CNT6H T6 High level of input terminal of ALL mode (Pin6,9)High level CNT9H T9 T6 = 2.0V (MOD mode), T9 = 2.0V (Normal mode) IN5L T5 Low level of input terminal of MOD mode min typ Unit max 0 0.4 V 2.0 5.0 V 0 0.4 V 2.0 5.0 V 0 0.4 V 2.0 5.0 V T9 = 0.4V (Standby mode) Input5 Low level T6 = 2.0V, T9 = 2.0V, T10 = 0.4V Input5 High level IN5H T5 High level of input terminal of MOD mode T6 = 2.0V, T9 = 2.0V, T10 = 0.4V Input10 Low level IN10L T10 Low level of input terminal of MOD mode T5 = 0.4V, T6 = 2.0V, T9 = 2.0V Input10 High level IN10H T10 High level of input terminal of MOD mode T5 = 0.4V, T6 = 2.0V, T9 = 2.0V Output10 terminal OPH10 T10 High level DEMOD mode: FM-Signal input 4.7 V T6 = 0.4V, T9 = 2.0V, Pull-UP:15KΩ Output10 terminal OPL13 Low level OPL18 Input12 Low level IN12L T10 T10: DEMOD mode: FM No-signal 0 0.25 0.4 V 0 3 V 4.5 5.0 V Measure the sink level of output terminal. T6 = 0.4V, T9 = 2.0V, Pull-UP:15KΩ T12 T12 Voltage of terminal at AGC ON T6 = 0.4V, T9 = 2.0V Input12 High level IN12H T12 T12 Voltage of terminal at AGC OFF T6 = 0.4V, T9 = 2.0V 5pin AC input dynamic range ACIN5 16pin AC input ACIN16 T5A T3 Input amplitude level of FM signal 1000 mVp-p Freq: 11.5MHz to 13.5MHz T16A T3 Maximum input level of T16A at Video signal 1.5 Vp-p dynamic range Video FM Modulation Block (MOD) T6=2.0V,T9=2.0V,T10=0.4V,T15=5V Parameter Symbol In OUT Ratings Conditions Current dissipation ICCR FM modulator output level VFM1 T3 FM Mute output level VFM2 T3 Measure the T3 output level with 2nd call FFM T3 Measure the output frequency on T3 Carrier frequency measure the currents into pins 2 (MOD mode) min 19.5 Measure the output level on T3 (No signal input) Unit typ 23.0 max 26.5 1.8 2.2 Vp-p mVp-p mA It is load impedance 200Ω between T3-GND. 0 10 20 10.9 11.5 12.1 MHz -30 -20 dB 1.9 2.0 2.1 MHz -2 0 +2 % with no signal input FM output Second THD2 T3 harmonic distortion Deviation Measure the second harmonics distortion with the above condition DEV T16A T3 With T16A 100% White 1Vp-p signal, Measure the deviation on T3 FM modulator linearity LMOD T16A T3 (11.5MHz to 13.5MHz) Let f2.85, f3.35 and f3.85 be the output frequency when 2.85V, 3.35V and 3.85V is applied to T16A LMOD= f3.35 - (f3.85 + f2.85) / 2 f3.85 – f2.85 × 100 Emphasis gain GEMP T16A T12 With VIN a 300mVp-p 10kHz sine wave, Measure the ratio of the levels on T16A and T12 -7.5 -6.0 -4.5 dB Main linear emphasis GME1 T16A T12 With VIN a 300mVp-p 500kHz sine wave, Measure the ratio of the levels on T16A and T12 -1.5 0.0 +1.5 dB GME2 T16A T12 With VIN a 300mVp-p 2MHz sine wave, Measure the ratio of the levels on T16A and T12 2.5 4.0 5.5 dB White clipping level LWC T16A T12 With VIN a 1.5Vp-p 100% white video signal. Measure the white clipping level on T12 180 200 220 % Dark clipping level LDC T16A T12 With VIN a 1.5Vp-p 100% white video signal. Measure the dark clipping level on T12. -60 -50 -40 % FM stop beginning delay time TC1 T5 T3 C7=0.01µF, Time from fall of T5 signal to doing of FM carrier of T3 STOP 240 300 360 µsec TC2 T5 T3 C8=0.001µF, Stop time of FM carrier of T3 30 40 50 µsec VDT T5 T3 C7=0.01µF, Minimum VD pulse width to which TC1B is normally output 63 characteristics(1) Main linear emphasis characteristics(2) (VD characteristic 1B) FM stop time (VD characteristic2A) Minimum VD pulse width µsec No.A0783-2/10 LA72910V Video FM De-modulation Block (DEMOD) T6=0.4V,T9=2.0V Parameter Symbol In OUT Conditions typ 28.0 max 32.0 Unit Current dissipation ICCP Video output level VOUT T5A T3 Demodulation level, when the FM signal of 2.2MHz deviation. Load impedance = 1kΩ T3-GND. 2.09 2.2 2.31 Vpp VOUTB T5A T3 Demodulation level, when the FM signal of 2.0MHz deviation. Load impedance = 1kΩ T3-GND. 1.9 2.0 2.1 Vpp DOC1 T5A T10 40 60 mVp-p T12 T12 T5A T10 1.5 2.5 µsec T12 T12 T5A T10 60 90 mVp-p T12 T12 T5A T15 0.5 1.0 1.5 V Shift time from T5 = 0mVp-p→300mVp-p to T10”High” 0.2 1.5 2.5 µsec T4 Measurement of T4 DC level. 3.9 T3 DEV = 2.0MHz. Input amplitude level of FM signal. (T5A: 11.5MHz to 13.5MHz) Video output level B FM stop detection level (DOC characteristic 1) (Drop Delay Down) DDD FM return judgment level DOC2 Video DC level when returning DOC2B (Drop Delay Rise) Measure the currents into pin 2 (DEMOD mode) Ratings min 24.0 T12 DWR Return operation delay time In this case only, VCC make 4.5V to 5.5V. T5 = 11.5MHz, 300mVp-p. Measure T12 voltage (V12). Set T12 V12 (AGC-Fix). T5 input level when T5 amplitude is decrease gradually, and T10 becomes "Low" Shift time from T5=300mVp-p→0mVp-p to T10”Low”. 0.5 T5=11.5MHz, 300mVpp, Measure T12 Voltage (V12). Set T12 V12 (AGC-Fix). T5 inputs the level when T5 amplitude is increase gradually, and T10 becomes "High" Confirmation of output of Video signal from T3. mA Measurement of DC level. T5A T10 T12 T12 4V Regulator VREG Range of input ACIN5 T5A DG DG T5A T3 0 6 10 % DP DP T5A T3 0 6 10 deg T3 Mute level measurement of T3 T5A T15 T5A = 11MHz, 100mVp-p, 200mVp-p and 400mVp-p. T5A T15 T5A T15 Dynamic range Output voltage at mute FM demodulation voltage MUV VDEM11 VDEM12 (11.0M) VDEM13 FM demodulation voltage VDEM21 4.0 4.3 500 1000 V mVp-p 0 10 20 IRE 0.3 0.8 1.3 V 0.7 1.2 1.7 V 1.1 1.6 2.1 V -2 0 +2 % 0.28 0.33 0.38 V/MHz 243 270 297 mVp-p Each T15 voltage measurement VDEM22 T5A = 12.5MHz, 100mVp-p, 200mVp-p and 400mVp-p. (12.5M) VDEM23 FM demodulation voltage VDEM31 Each T15 voltage measurement VDEM32 T5A = 14MHz, 100mVp-p, 200mVp-p and 400mVp-p (14.0M) VDEM33 Each T15 voltage measurement FM demodulation linearity1.2.3 LDEM1 Calculate FM demodulation linearity LDEM2 LDEM1 = {[VDEM21 - (VDEM11 + VDEM31) / 2] LDEM3 / (VDEM31 - VDEM11)}×100 LDEM2 = {[VDEM22 - (VDEM12 + VDEM32) /2 ] / (VDEM32 - VDEM12)}×100 LDEM3 = {[VDEM23 - (VDEM13 + VDEM33) / 2] / (VDEM33 - VDEM13)}×100 FM demodulation Sensitivity1.2.3 SDEM1 SDEM2 Calculate FM recovery Sensitivity with consider pin3 output level conversion ratio. SDEM3 SDEM1 = (VDEM31-VDEM11)/2.5 SDEM2 = (VDEM32-VDEM12)/2.5 SDEM3 = (VDEM33-VDEM13)/2.5 Main linear de-emphasis GMED T5A T15 amplitude Main linear de-emphasis DEV = 1.0MHz) Signal level of T15 GMED1 T5A T15 T5 = 200mVp-p FM signal (fm = 500kHz, Center Carrier = 12.5MHz, DEV = 1.5MHz). Signal level of T15 versus GMRD (Ratio of GMED). -8.0 -6.0 -4.0 dB GMED2 T5A T15 T5 = 200mVp-p FM signal (fm = 2MHz, Center Carrier = 9.25MHz, DEV = 1.5MHz). Signal level of T15 versus GMRD (Ratio of GMED) -11.0 -9.0 -7.0 dB Characteristics(1) Main linear de-emphasis Characteristics(2) T5=200mVp-p FM signal (fm = 10kHz,Center Carrier = 12.5MHz, No.A0783-3/10 LA72910V Standby (Standby mode) T9=0.4V Parameter Symbol In OUT Current dissipation at standby ICCS T9 Standby release time(1) (FM stop→release) SASK1 T6 T9 Standby release time(2) (Video signal stop →release) SASK2 T6 T5A T9 Ratings Conditions min typ max Unit Measure the currents into pin 2. (Standby mode) 5.0 8.0 11.0 mA T3 T6 = 2.0VDC T9 = 0V→2V (Standby release) Time until FM career is output to T3. 0.0 1.0 2.0 usec T3 T6 = 0.4V, T5 = DEV = 1.5MHz 100% white video signal of FM signal. T9 = 0V→2V (Standby release), Time until white 100% signal is output to T3 2.0 7.0 12.0 usec Package Dimensions unit : mm (typ) 3178B 5.2 0.5 6.4 9 4.4 16 1 8 0.65 0.15 0.22 0.1 (1.3) 1.5max (0.33) SANYO : SSOP16(225mil) Pin Assignment Emphasis filter 1 16 Video_IN VCC(5V) 2 15 Main_OUT 3 VD control/ De-emphasis out 14 A_GND Regulator filter 4 De-emphasis filter Emphasis Monitor 12 /FM-AGC filter 13 VD_IN 5 /FM_IN Mode control 6 (mod/de-mod) 11 B_GND Drop Delay 7 (TC1) 10 FM-DOC_OUT /2nd-Call_IN Drop Width 8 (TC2) 9 Stand-by control Top view No.A0783-4/10 LA72910V Block Diagram and Application Circuit Exanple1 Modulation (Camera) 2nd-Call (Push switch) MOD : DFF_SW 2V : DFF_ON 0V : DFF_OFF Video-IN (1Vp-p) Standby SW Main Emphasis Monitor (Low : FM-OFF) (High : FM-ON) 10µF A-GND B-GND + 16 15 12 13 14 Main De-enphasis Clamp 11 10 9 Standby Control DO-DET FM-AGC-DET (DO-LOW) (Low : FM-OFF) FM-DEMOD/LPF D-LIM LPF/FM-AGC Main Emphasis FM-MOD LPF 12dB-AMP Video-Mute FM-Stop control FM-stop DFF-SW MOD/DEMOD Control REG VD-IN MOD mode TC2 7 8 0.01µF FM-OUT 6 0.01µF 180pF 470Ω VCC(5V) TC1 5 4 3 0.1µF A-VCC 2 1 1000pF -6dB (Negative pulse) (MOD : Hogh) Pin 10 : Open collector output Pin 3 : Push-pull output Application Circuit Exanple2 Demodulation (Monitor) 16 15 15kΩ DO-OUT B-GND 12 13 14 Main De-enphasis Clamp 1µF + A-GND 1.8kΩ 1µF 100pF FM-AGC Off (Off : 4.5V) 11 FM-AGC-DET 10 DO-DET (DO-LOW) Standby SW (Low : FM-OFF) (High : FM-ON) 9 Standby Control (Low : FM-OFF) -6dB FM-DEMOD/LPF D-LIM LPF/FM-AGC Main Emphasis FM-MOD LPF 12dB-AMP Video-Mute FM-Stop control FM-stop DFF-SW MOD/DEMOD Control REG VCC(5V) TC1 Video-OUT (2Vp-p) 5 4 3 6 0.01µF A-VCC 2 0.1µF 1 7 TC2 8 Pin 10 : Open collector output Pin 3 : Push-pull output FM-IN DEMOD mode (DEMOD : Low) No.A0783-5/10 LA72910V Pin Function Pin No. FM MOD mode(Outside camera) FM DEMOD mode(Inside Monitor) Note 1 Emphasis filter Emphasis filter connection pin Non connect(Hi-Z) If you don’t need, this pin is open. 2 VCC5V VCC for FM modulation. VCC for FM demodulation. 3 Main_OUT 4 5 6 Pin name Regulator filter VD_IN/FM_IN Mode control FM Output Video Output (Ro=200Ω:1.8Vp-p) (Ro=1kΩ:2Vp-p) Push-pull output FM modulation block reference FM demodulation block reference DC power supply. DC power supply. VD Input FM Input DEMOD mode:Set (Hi: over 2V, Low: under 0.4V) (Recommend Level: 100 to 3.3V by internal bias. (VD DET: High) 620mVp-p) (34kΩ/66kΩ) Set over 2V DC voltage. Set under 0.4V DC voltage. Outside camera / Inside monitor setting. 7 Drop delay Connect TC1 setting C. Non connect(Hi-Z) Connect TC2 setting C. Non connect(Hi-Z) FM blocks standby control. ← (TC1) 8 Drop Width (TC2) 9 Stand-by control (FM block operate: over 2V , FM block standby: under 0.4V ) 10 11 12 FM-DOC-OUT 2nd-Call input, 2nd-Call: Low DOC output DEMOD mode: /2nd-Call control (High: over 2V, Low: under 0.4V) (When DO-DET, output is Low) Open collector output. B-GND Circuit GND ← Emphasis Monitor Emphasis monitor output FM AGC control filter (AGC-ON: 0 to MOD mode: Don’t connect 3V DC, AGC-OFF: 4.5V to 5V by capacitor. /FM-AGC filter external DC voltage.) 13 De-emphasis filter Non connect(Hi-Z) De-emphasis filter connection pin. 14 A-GND Circuit GND ← DE-emphasis output 15 16 If you don’t need, this pin is open. VD control DFF control /De-emphasis out (ON: over 2V, OFF: under 0.4V) Video_IN Video signal input (from outside CCD Video signal input (from MOD mode: Maximum video input camera: 1Vp-p). de-emphasis block: 0.5Vp-p). level is 1.5Vp-p. No.A0783-6/10 LA72910V Pin Description Pin No. 1 Pin Name Emphasis filter Description Equivalent circuit Main Emphasis filter pin. Before FM Modulation, make emphasis characteristic at video signal. Emphasis time constant must be matching at de-emphasis time constant. 2.7kΩ (If you don’t need the emphasis, this pin is open.) 620Ω 1 C1 2 VCC5V 3 Main_OUT 1kΩ 200Ω R1 VCC pin. Supply voltage is 5V DC. Please connect de-coupling capacitor. Push-Pull output pin. MOD mode: FM carrier output. (1.8Vp-p: Rout=200Ω) DEMOD mode: Video signal output. (2.0Vp-p: Rout=1kΩ) 40Ω MOD 3 4 Regulator filter 40Ω DEMOD Internal regulator filter pin. Please connect 0.1µF (C1) C1 5 VD_IN/FM_IN 50kΩ 10kΩ 23kΩ 4 DEMOD mode: FM signal input. Internal DC FM Sig Please consider input impedance. C1 20µA directory. 34kΩ MOD mode: VD signal input. Please input VD signal 200Ω bias is 3.3V. Please use capacitor (C1) coupling. 200Ω 5 1kΩ Mode control 80µA MOD mode/ DEMOD mode setting pin. MOD mode: Please set over 2V DC voltage. (2 to 5V). DEMOD mode: Please set under 0.4V DC voltage. 30µA 6 66kΩ VD Sig (0 to 0.4V). 1kΩ 6 Continued on next page. No.A0783-7/10 LA72910V Continued from preceding page. Pin No. 7 Pin Name Drop delay Description Equivalent circuit MOD mode: TC1 filter pin. Please connect C1. 2kΩ 60µA 20µA (TC1) 7 200Ω C1 8 Drop Width 1kΩ 30µA 1kΩ MOD mode: TC2 filter pin. Please connect C1. 2kΩ 60µA (TC2) 8 1kΩ 30µA 200Ω C1 9 Stand-by control Standby control pin. FM block standby: under 0.4V DC voltage. (0 to 0.4V) 30µA FM block operate: over 2V DC voltage. (2 to 5V) 1kΩ 9 10 FM-DOC-OUT DEMOD mode: Drop-out output pin. This pin is open /2nd-Call control collector output, so please connect pull up resistor. 30µA MOD mode: 2nd-CALL input. 2nd-CALL input: under 0.4V (0 to 0.4V) DC. Normal: over 2V DC voltage. (2 to 5V) 1kΩ Circuit GND. Emphasis Monitor MOD mode: Emphasis monitor pin. /FM-AGC filter DEMOD mode: FM AGC filter pin. AGC-DET EMP MONI If FM AGC no need (=AGC Off), Please set pin12 voltage over 4.5V DC voltage. (4.5 to 5V) 100kΩ 12 C1 10kΩ 500Ω 10kΩ 12 B-GND 60µA 11 300Ω 10 Continued on next page. No.A0783-8/10 LA72910V Continued from preceding page. Pin No. 13 Pin Name De-emphasis filter Description Equivalent circuit DEMOD mode: De-emphasis filter pin. De-emphasis time constant must be matching at emphasis SIG 300µA time constant. (If you don’t need the emphasis, this pin is open.) 4.7kΩ 14 15 A-GND Circuit GND. VD control DEMOD mode: Video signal output after De-emphasis. /De-emphasis out Output level is 0.5Vp-p. Connect capacitor to clamp input (pin 16). MOD mode: DFF control pin. DFF is ON at over 2V DC 200Ω C1 2.5kΩ 13 R1 MOD : DC IN voltage. (2 to 5V) SIG MOD mode: Video signal input pin (from camera). DEMOD mode: Video signal input pin (from de-emphasis). Input level is 0.5Vp-p. Video input MOD : 1Vp-p DEMOD : 0.5Vp-p 16 C1 200Ω Clamp Input level is 1Vp-p. 500Ω 200µA Video_IN 15kΩ 16 C1 1mA DEMOD 3 No.A0783-9/10 LA72910V Test Circuit Current measure point T1 180pF 1 Emphasis filter Power Supply VCC=5V T3 T3A 10µF + SW3 T4 200Ω T5A 1µF + 1kΩ 0.1µF A B SW5 T4 T6 GND T8 1000pF Video_IN 16 VD control/ 15 De-emphasis out 2 VCC(5V) 3 Main_OUT Regulator 4 filter T7 0.01µF 10µF + A SW16 75Ω + B 1µF T16 470Ω A_GND 14 De-emphasis 13 filter Emphasis Monitor /FM-AGC filter 12 5 VD_IN /FM_IN 6 Mode control (mod/de-mod) B_GND 11 Drop Delay 7 (TC1) FM-DOC_OUT 10 /2nd-Call_IN Drop Width (TC2) Stand-by 9 control 8 T15 T16A Video_IN T14 T13 1.8kΩ 100pF T12 T11 T10 A SW12 + B 1µF 15kΩ Pull up T9 SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. 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SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of April, 2007. Specifications and information herein are subject to change without notice. PS No.A0783-10/10