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SA605N Datasheet(PDF) 4 Page - NXP Semiconductors |
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SA605N Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 13 page Philips Semiconductors Product specification SA605 High performance low power mixer FM IF system 1997 Nov 07 4 AC ELECTRICAL CHARACTERISTICS TA = 25°C; VCC = +6V, unless otherwise stated. RF frequency = 45MHz + 14.5dBV RF input step-up; IF frequency = 455kHz; R17 = 5.1k; RF level = -45dBm; FM modulation = 1kHz with ±8kHz peak deviation. Audio output with C-message weighted filter and de-emphasis capacitor. Test circuit Figure 3. The parameters listed below are tested using automatic test equipment to assure consistent electrical characterristics. The limits do not represent the ultimate performance limits of the device. Use of an optimized RF layout will improve many of the listed parameters. LIMITS SYMBOL PARAMETER TEST CONDITIONS SA605 UNITS MIN TYP MAX Mixer/Osc section (ext LO = 300mV) fIN Input signal frequency 500 MHz fOSC Crystal oscillator frequency 150 MHz Noise figure at 45MHz 5.0 dB Third-order input intercept point f1 = 45.0; f2 = 45.06MHz -10 dBm Conversion power gain Matched 14.5dBV step-up 10 13 15 dB 50 Ω source -1.7 dB RF input resistance Single-ended input 3.0 4.7 k Ω RF input capacitance 3.5 4.0 pF Mixer output resistance (Pin 20) 1.25 1.5 k Ω IF section IF amp gain 50 Ω source 39.7 dB Limiter gain 50 Ω source 62.5 dB Input limiting -3dB, R17 = 5.1k Test at Pin 18 -113 dBm AM rejection 80% AM 1kHz 29 34 43 dB Audio level, R10 = 100k 15nF de-emphasis 80 150 260 mVRMS Unmuted audio level, R11 = 100k 150pF de-emphasis 480 mV SINAD sensitivity RF level -118dB 16 dB THD Total harmonic distortion -34 -42 dB S/N Signal-to-noise ratio No modulation for noise 73 dB IF RSSI output, R9 = 100kΩ1 IF level = -118dBm 0 160 650 mV IF level = -68dBm 1.9 2.5 3.1 V IF level = -18dBm 4.0 4.8 5.6 V RSSI range R9 = 100kΩ Pin 16 90 dB RSSI accuracy R9 = 100kΩ Pin 16 +1.5 dB IF input impedance 1.40 1.6 k Ω IF output impedance 0.85 1.0 k Ω Limiter input impedance 1.40 1.6 k Ω Unmuted audio output resistance 58 k Ω Muted audio output resistance 58 k Ω RF/IF section (int LO) Unmuted audio level 4.5V = VCC, RF level = -27dBm 450 mVRMS System RSSI output 4.5V = VCC, RF level = -27dBm 4.3 V NOTE: 1. The generator source impedance is 50 Ω, but the SA605 input impedance at Pin 18 is 1500Ω. As a result, IF level refers to the actual signal that enters the SA605 input (Pin 8) which is about 21dB less than the ”available power” at the generator. |
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