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| NTE1604 Integrated Circuit FM IF System for Car Radio Description: The NTE1604 is an integrated circuit in a 16-Lead SIP type package designed for use in FM car stereo receivers. This device features versatile muting characteristics and allows receiver designers to realize the muting performance according to their design concept. Functions: D IF Amplification/Limiter D AFC Output D Muting Bandwidth D Quadrature Detector D D D D Signal Meter Output Muting Under Weak Signal Strength AF Preamplifier AGC Output Features: D Versatile Mutings a. When Muting Operation is Performed under a Weak Signal Strength, an Attenuation Slope of the Audio Output Against the Input Signal Strength Varaitions can be Set at any Given value b. Maximum Muting Attenuation can be Selected Between about 6dB to 40dB c. Input Signal Strength level which Actuates the Muting Circuit can be Set Freely D High Limiting Sensitivity (25db Typ. with Muting OFF) Provides a Fine Quieting Characteristic D High Signal-to-Noise Ratio: 78dB Typ D Low Distortion (0.05% Typ) Available, if used with Double-Tuned Circuits D Good AM Rejection Ratio (63dB with 6 Stages of Differential IF Amplifiers) D Signal Merter Drive Output Proportional to the Input Signal Strength in dB D Clamped (VBE) AFC Output, Bandwidth Adjustable D Delayed AGC Output for Front End Circuit Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Maximum Supply Voltage (Pin12), VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Maximum Supply Current (Pin12), ICCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA Allowable Power Dissipation, PDmax TA = +25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 640mW TA = +70C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460mW Input Voltage (Pin1 to Pin2), vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1VP-P Flow-In Current (Pin2, Pin3), I2, I3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2mA Flow-In Current (Pin6), I6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA Flow-Out Current (Pin5, Pin15, Pin16), I5, I15, I16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA Flow-Out Current (Pin13, Pin14), I13, I14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Recommended Operating Conditions: (TA = +25C unless otherwise specified) Recommended Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V VCC Range on Operation, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5V to 16V Electrical Characteristics: (TA = +25C, VCC = 8V, f = 10.7MHz unless otherwise specified) Parameter Quiescent Current Current Dissipation Demodulated Output Total Harmonic Distortion Signal-to-Noise Ratio Input Limiting Voltage Muting Sensitivity Muting Attenuation Muting Bandwidth AM Rejection Ratio Muting Drive Output Signal Meter Output Symbol ICCO ICC vo THD S/N vi(lim) vi(mute) Quiescent vin = 100dB vin = 100dB, 400Hz, 100% MOD vin = 100dB, 400Hz, 100% MOD vin = 100dB, 400Hz, 100% MOD vo: 3dB Down, 400Hz, 100% MOD V14 = 2.0V V6 = 5V (22k) BW (mute) AMR V14-0 V14-100 V15-0 V15-50 V15-70 V15-100 AGC Output Offset Voltage V16-0 V16-100 V7-13 V8-13 vi = 100dB, 400Hz, 100% MOD Test Conditions Min 15 20 200 - 72 - 22 10 24 140 50 3.5 0.0 0.0 0.8 1.6 4.5 3.5 0.0 -0.25 -0.5 Typ 21 25 260 0.05 78 25 26 15 28 210 63 4.2 0.0 0.1 1.4 2.4 5.3 4.1 0.02 0.0 0.0 Max 27 30 320 0.2 - 29 32 20 32 370 - 5.0 0.3 0.3 2.0 3.2 6.0 4.5 0.3 +0.25 +0.5 Unit mA mA mVrms % dB dB dB dB dB kHz dB V V V V V V V V V V Mute (ACC) V6 = 2V (22k) vi = 100dB, V14 = 2V vi = 100dB, FM: 400Hz, 100% MOD, AM: 1kHz, 30% MOD Quiescent vi = 100dB Quiescent vi = 50dB vi = 70dB vi = 100dB Quiescent vi = 100dB Quiescent, Pin7 to Pin13 Quiescent, Pin8 to Pin13 Pin Connection Diagram (Front View) 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 AGC "S" Meter Mute Drive Vref VCC Quad Input GND IF Output AF Output AFC Mute Input Mute Attenuation Adjust GND Bypass Bypass IF Input .953 (24.1) .257 (6.5) 1 16 .127 (3.2) .334 (8.48) .125 (3.17) .059 (1.5) .118 (3.0) |
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