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TDA1575 데이터시트(PDF) 5 Page - NXP Semiconductors |
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TDA1575 데이터시트(HTML) 5 Page - NXP Semiconductors |
5 / 16 page April 1993 5 Philips Semiconductors Preliminary specification FM front end circuit for CENELEC EN 55020 applications TDA1575T CHARACTERISTICS VP = 8.5 V and Tamb = +25°C, measurements taken in Fig.1 with f0 = 98 MHz (EMF1) unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP supply voltage (pin 13) 7 8.5 10 V IP supply current without mixer 16 23 30 mA VREF reference voltage (pin 5) I5 ≤ 3 mA 3.9 4.2 4.4 V Mixer I14+15 mixer supply current (pins 14 and 15) − 4 − mA V1,2 DC voltage input (pins 1 and 2) − 1 − V Z1,2 input impedance − 14 −Ω V14,15 DC output voltage (pins 14 and 15) 4 − 10 V C14,15 output capacitance − 13 − pF GP conversion power gain note 1 − 14 − dB EMF1IP3 3rd order intercept point − 115 − dB µV NF noise figure − 9 − dB total noise figure including transforming network − 11 − dB Oscillator V7,8 DC input voltage (pins 7 and 8) − 1.3 − V V6 DC output voltage (pin 6) − 2.0 − V ∆f residual FM at pin 6 f = 300 to 15000 Hz; de-emphasis 50 µs − 2.2 − Hz Oscillator buffered output (pin 9) VO output signal (RMS value) RL= 500 Ω; CL= 2 pF 75 −− mV V9 DC output voltage − 6 − V R9 DC output resistor − 950 −Ω THD total harmonic distortion −−15 − dBC fS spurious frequencies EMF1 = 2 V; RS = 50 Ω; fOSC = 108.7 MHz −−37 − dBC Automatic gain control (AGC) R3 input resistance (pin 3) − 4 − k Ω C3 input capacitance − 3 − pF V16 AGC output swing (DC) Figs 3 and 4 0.5 − VP − 0.3 V I16 output current at I3 = 0 V16 = 1⁄2VP −25 −50 −150 µA output current at U3 = 2 V V16 = 7 to 10 V 2 − 5mA EMF2 threshold (RMS value) I16 = 0; V16 = 1⁄2VP; Figs 4 and 5 − 17 − mV |
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