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| Ordering number : EN5675 Monolithic linear IC LA7170M RF Modulator for UHF Band (Supports SECAM) Overview The LA7170M is a UHF band RF modulator whose builtin RF oscillator and mixer make it a single-chip RF modulator solution. It also supports image positivity modulation and AM sound modulation for SECAM systems. Package Dimensions unit: mm 3036B-MFP20 [LA7170M] SANYO: MFP20 Specifications Maximum Ratings at Ta = 25C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Ta 75C Conditions Ratings 7 250 -20 to +75 -55 to +150 Unit V mW C C Operating Conditions at Ta = 25C Parameter Recommended operating voltage Operating supply voltage range Symbol VCC VCC op Conditions Ratings 5.0 4.5 to 5.5 Unit V V Operating Characteristics at Ta = 25C, VCC = 5 V, Unless otherwise specified, fp = 591.25 MHz, fs = 5.5 MHz, S9: ON, S10: B, S19A: B, S19B: B Parameter Current drain 1 Regulator voltage [RF Output Level] (S19A: A, S19B: A) Picture carrier output Sound carrier output ratio Sound second harmonic distortion Sound third harmonic distortion Chrominance beat Picture harmonic distortion P P/S P/S2 P/S3 P/CB P/V2 With no input, with 50 terminator Ratio of levels at fp and fp+fs Ratio of levels at fp and fp+2fs Ratio of levels at fp and fp+3fs Ratio of P above to chrominance beat for VIN = 0.4 Vp-p with 4.43-MHz sine wave input Ratio of P above to level at fp+2 MHz for VIN = 1 Vp-p with 1-MHz sine wave input 77 12.5 52 58 65 50 79.5 15 62 68 75 62 82 17.5 dB dB dB dB dB dB Symbol ICC1 Vreq With no input With no input Conditions Ratings min 24 3.7 typ 30 3.9 max 36 4.1 Unit mA V Continued on next page. SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 43098HA (OT) No. 5675-1/8 LA7170M Continued from preceding page. Parameter [Picture] Picture modulation Maximum picture modulation SYNC compression Differential gain Differential phase SECAM picture modulation TSG picture modulation TSG SV ratio TSG horizontal period TSG synchronization pulse width TSG white signal width TSG first white rising edge TSG second white rising edge [Sound] FM sound modulation Rank A Rank B Rank C Rank D Rank E Interchannel FM sound modulation ratio FM sound distortion ms FM THD FM ms FM AIN = 1.66 Vp-p with 1-kHz sine wave input; 100% modulation: 50 kHz; S10: b Note: AIN = 1 Vp-p normally produces 60% modulation. ms FM ratio with S10: off S10: b/off; AIN = 1 Vp-p with 1-kHz sine wave input S10: b/off; VIN = 1 Vp-p color bar; AIN with 1-kHz sine wave input; ratio of level at AIN = 1 Vp-p to that at AIN = 0 Vp-p Maximum modulation possible with S10: b/off and sound distortion ratio within 3% S10: a; AIN = 1 Vp-p with 1-kHz sine wave input S10: a; AIN = 1 Vp-p with 1-kHz sine wave input S10: a; VIN = 1 Vp-p color bar; AIN with 1-kHz sine wave input; ratio of level at AIN = 1 Vp-p to that at AIN = 0 Vp-p 42 43 73 81 90 99 109 0.93 81 90 100 110 121 0.98 0.3 89 99 110 121 133 1.03 1.0 % % % % % % mp mp max (S/V) DG DP mp SCM mp TSG V/S TS HS HV TV1 TV2 VIN = 1 Vp-p, 100% white VIN = 1.5 Vp-p, 100% white VIN = 1 Vp-p, 100% white {1-(S/V)(3/7)} x 100 VIN : 5-stair step, mp = 80%, at fourth step VIN : 5-stair step, mp = 80%, at fourth step VIN = 1 Vp-p, 100% white S10 : a S9 : off S9 : off S9 : off S9 : off S9 : off S9 : off S9 : off -6 88 70 6.3/3.7 63.7 3.6 3.6 22 38 73 88 80 93 1.5 2 0 93 80 6.8/3.2 64.0 4.0 4.0 24 40 87 98 5 5 +6 98 90 7.3/2.7 64.3 4.4 4.4 26 42 s s s s s % % % % deg % % Symbol Conditions Ratings min typ max Unit FM sound signal-to-noise ratio S/NFM 55 dB Maximum FM modulation AM sound modulation AM sound distortion ratio ms max ms AM THD AM 400 43 50 0.5 57 2 % % % AM sound signal-to-noise ratio S/N AM 47 dB Note: The AM sound items refer to direct AM detection from the sound carrier (fp + sound intercarrier). This device requires the special care associated with all high-frequency devices. No. 5675-2/8 LA7170M Pin Functions Pin No. 1 Symbol VCC1 Pin Voltage 5.0 Pin Description VCC for baseband circuits Equivalent Circuit 2 3 TANK1 TANK2 3.9 Connect tank circuits between these pins and the REG pin. 4 REG 3.9 Regulator output 5 FM AUDIO IN 0 FM sound input 6 AM AUDIO IN 0 AM sound input 7 GND1 0 Ground for baseband circuits 8 VIDEO IN 3.0 Picture input. Clamp at SYNC tip. 9 RES 2.6 (open) Ground this pin through a 500-kHz oscillator. Open : TSG ON GND : TSG OFF Continued on next page. No. 5675-3/8 LA7170M Continued from preceding page. Pin No. Symbol Pin Voltage Pin Description Equivalent Circuit 10 FoCTL 2.6 (open) L (0 to 1.5 V) : PAL-TANK1 M (2.1 to 3.2 V) : PAL-TANK2 H (3.8 to 5.0 V) : SECAM-TANK2 11 12 13 14 OSC-B1 OSC-E1 OSC-E2 OSC-B2 2.5 1.8 1.8 2.5 This circuit forms a Colpitts oscillator. 15 16 17 GND2 VCC2 GND3 0 5.0 0 Ground for RF oscillator VCC for RF oscillator VCC for RF mixer 18 P/S 1.7 Grounding this pin through a capacitor or resistor attenuates the sound intercarrier level. 19 RF OUT 3.0 RF mixer signal output 20 VCC3 5.0 VCC for RF mixer No. 5675-4/8 LA7170M Block Diagram No. 5675-5/8 Test Circuit 5.5-MHz coil Sumida Electric SA-1038 6.5-MHz coil Sumida Electric SA-1002 500-kHz resonator Murata CSB500E54 LA7170M No. 5675-6/8 Sample Application Circuit 5.5-MHz coil Sumida Electric SA-1038 6.5-MHz coil Sumida Electric SA-1002 500-kHz resonator Murata CSB500E54 LA7170M No. 5675-7/8 LA7170M s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO 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 April, 1998. Specifications and information herein are subject to change without notice. PS No. 5675-8/8 |
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