NTE1495 Integrated Circuit AM RF Mixer, IF Amplifier Description: The NTE1495 is a monolithic integrated circuit in a 15−Lead Staggered SIP type package. This device is suitable for use as an AM tuner in automotive radio receivers, specifically where compact mounting is required and contains an RF amplifier, mixer, IF amplifier, and two types of AGC circuits. Features: D High Sensitivity D Excellent Two−Signal Selectivity Characteristics which Permits Receiving any Weak Signal Without Interference from the Next Strongest Signal D Wide AGC Range Provided by Two AGC Circuits (Delay Type) Employed in the IF and RF Stages, in Addition to the Ability to Withstand Large Input and to the Yeild of High S/N Ratio Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Input Voltage, Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7VP−P Power Dissipation (TA = +75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to + 75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Parameter Operating Supply Voltage Operating Ambient Temperature Symbol Test Conditions Min Typ Max Unit VCC 9 13 16 V TA −20 − +75 °C Electrical Characteristics: (TA = +25°C, VCC = 13V, f = 1MHz, fmod = 400Hz, MOD = 30%, RL = 10kΩ unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Circuit Current ICC At No Signal 18 26 34 mA Maximum Sensitivity MS Input level (υi) at which detector output υo gets 20mVrms − 10 17 dBµV Signal−to−Noise Ratio S/N υi = 24dBµV 15 20 − dB Detector Output υO υi = 74dBµV 40 60 90 mVrms THD υi = 126dBµV − 0.4 3.0 % Total Tarmonic Distortion Tuner Performance Characteristics: (TA = +25°C, VCC = 13V, f = 1MHz, fmod = 400Hz, MOD = 30%, RL = 10kΩ unless otherwise specified) Parameter Test Conditions Value Unit Maximum Sensitivity Input voltage at which detector output voltage is 20mVrms 10 dBµV Usable Sensitivity Input voltage at which S/N Ratio is 20dB 24 dBµV Detector Output Resistors connected to Pin5 are 47kΩ and 33kΩ, υi = 74dBµV 60 mVrms Detector Distortion υi = 74dBµV 0.4 % Signal−to−Noise Ratio υi = 74dBµV 50 dB Overload Distortion υi = 126dBµV 0.4 % IF Rejection f = 1MHz, υo = 20mVrms, IF = 450kHz 67 dB Image Rejection f = 1MHz, υo = 20mVrms, f + 2 IF 80 dB Selectivity f = 1MHz, ∆f = ±10kHz 31 dB Tweet υi = 74dBµV 2 IF = 900kHz 45 dB 3 IF = 1350kHz 50 dB Pin Connection Diagram (Front View) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 IF Output Bypass AGC Input IF Input Mixer Input Mixer Output GND GND RF Output Bypass Bypass RF Input VCC OSC Input OSC Output .767 (19.5) .110 (2.79) .259 (6.57) 1 15 .500 (12.7) .468 (11.8) .039 (1.0) .100 (2.54) .100 (2.54) .700 (17.78) .100 (2.54)