Ordering number : ENA1859B LA72914V Monolithic Linear IC FM Modulator and LA72914V Electrical Characteristics at Ta = 25C, V = 5V CC DC Characteristic Ratings Parameter Symbol Conditions Unit min typ max 2.4V regulator VREG Measure the DC voltage at pin 2 2.2 2.4 2.6 V Current dissipation I 1 Measure the current into pin 4 in normal mode. 26.0 33.0 40.0 mA CC I 2 Measure the current into pin 4 in stand-by mode. 2.0 2.5 3.0 mA CC Control pin (6 pin) CNT6L Low level of input pin (6pin) in 4.5MHz TX mode. 0 0.4 V Low level Control pin (6 pin) CNT6M Middle level of input pin (6pin) in stand-by mode. 2.0 3.0 V Middle level Control pin (6 pin) CNT6H High level of input pin (6pin) in 6.5MHz TX mode. 4.5 5.0 V High level AGC stop at pin 11 AGCS Voltage of input pin (pin 11) in AGC stop 4.5 5.0 V control voltage TX OFF mode at pin 16 CNT16L Voltage of input pin (pin 16) in TX off mode 0 0.4 V control voltage Sound FM Modulation Block (TX) Ratings Parameter Symbol Conditions Unit min typ max FM carrier FFM1 Output frequency of T1B in no signals. T6=0.6V, T14:open 4.455 4.500 4.545MHz output frequency FFM2 Output frequency of T1B in no signals. T6=4.2V, T14:open 6.435 6.500 6.565MHz FM carrier output level VOFM1 Output level of T1B in no signals. 1.9 2.3 2.6Vp-p Load impedance = 1k T1-GND. T6=0.6V VOFM2 Output level of T1B in no signals. 1.3 1.7 2.1Vp-p Load impedance = 1k T1-GND. T6=4.2V nd FM carrier output 2HD1 2 harmonics distortion of T1B in no signals. -30 -20 dB second harmonics Load impedance = 1k T1-GND. T6=0.6V nd distortion 2HD2 2 harmonics distortion of T1B in no signals. -30 -20 dB Load impedance = 1k T1-GND. T6=4.2V FM carrier output mute VFMT Output level of T1B in TX off mode. T6=0.6V (4.2V) -60 -50 dB level FM deviation DEV FM deviation of T1A, T6=0.6V (4.2V), input at 20 25 30kHz T16=1.0Vp-p/1kHz (sine) Emphasis FEMP T16=200mVp-p, 1kHz (sine), M1=T1 output deviation. 7 12 17kHz Characteristic T16=200mVp-p, 5kHz (sine), M2=T1 output deviation. FEMP=M2-M1 ALC characteristic ALC1 T16A=0.25Vp-p, 1kHz (sine), T3:Open, T6=0.6V, T3 output level 0.45 0.5 0.55 Vp-p ALC2 T16A=0.6Vp-p, 1kHz (sine), T3:Open, T6=0.6V, T3 output level 0.9 1.0 1.1 Vp-p ALC3 T16A=1.0Vp-p, 1kHz (sine), T3:Open, T6=0.6V, T3 output level 0.95 1.05 1.15 Vp-p FM carrier fo FCNT1 No signal input. Measure T1B frequency. T16:Open, T6=0.6V -0.22 MHz adjustment (reference) (4.2V), T14=0.5V FCNT2 No signal input. Measure T1B frequency. T16:Open, T6=0.6V +-.22 MHz (4.2V), T14=4.5V Sound FM demodulation block (RX) Ratings Parameter Symbol Conditions Unit min typ max Sound demodulation V 1 Input signal: CAR=4.5MHz, DEV=25kHz, MOD=1kHz, 0.6 0.9 1.3Vp-p OUT level Level: 100mVp-p. T5A input. Measure T9B signal level. (T9B-GND: R =10k) T6=4.2V OUT V 2 Input signal: CAR=6.5MHz, DEV=25kHz, MOD=1kHz, 0.7 1.0 1.4Vp-p OUT Level: 100mVp-p. T5A input. Measure T9B signal level. (T9B-GND: R =10k) T6=0.6V OUT S/N SN1 Input signal: CAR=4.5MHz, No-modulation. Level: 100mVp-p. 35 50 dB T5A input. T6=4.2V, (IHF-A) M1=T9B signal level. (T9B-GND: R =10k) SN1=20log(V 1/M1) OUT OUT SN2 Input signal: CAR=6.5MHz, No-modulation. Level: 100mVp-p. 35 50 dB T5A input. T6=0.6V, (IHF-A) M1=T9B signal level. (T9B-GND: R =10k) SN1=20log(V 2/M1) OUT OUT Continued on next page No.A1859-2/9