SL6654

Obsolescence Notice This product is obsolete. This information is available for your convenience only. For more information on Zarlink’s obsolete products and replacement product lists, please visit http://products.zarlink.com/obsolete_products/ THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS SL6654 IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS DS 3286 -1 SL6654 LOWER POWER IF/AF CIRCUIT (WITH RSSI) FOR FM CELLULAR RADIO The SL6654 is a complete single chip mixer/oscillator, IF amplifier and detector for FM cellular radio, cordless telephones and low power radio applications. It features an exceptionally stable RSSI (Received Signal Strength Indicator) output using a unique system of detection. Supply current is less than 2mA from a supply voltage in the range 2.5V to 7.5V. FEATURES Low Power Consumption (1.5mA) Single Chip Solution Guaranteed 100MHz Operation Exceptionally Stable RSSI APPLICATIONS Cellular Radio Telephones Cordless Telephones MP18 Fig. 1 Pin connections (top view) QUICK REFERENCE DATA Supply Voltage 2.5V to 7 5V Sensitivity 3µV Co-Channel Rejection 7dB VCC 33p 270p 33k 1n 33k 8p2 17 OSCILLATOR INPUT 200mV RMS C 16 B 15 50µA E 4 OSCILLATOR TRANSISTOR 0V 40k 270p AUDIO OUTPUTS 8p2 6 20 - 40p X1 10µ 0V 220n 10p 5 2 DETECTOR 3 1µA VCC 39k 330p VCC +15dB (ADJUSTABLE) 100MHz MAX 18 8µA RFC 2k 1 8µA MIXER INPUT 3µV 1n 7 1k BIAS 8 10k 10n +1.2V 100n MIXER SL6652 +90dB (LIGHTING) 1.5MHz MAX IF AMP 11 RSSI 1k RSSI 10n 200k 200k 100n 20k 9 1.5k LOAD RESISTOR 10 CERAMIC FILTER 14 13 220n 12 220n 1.5k (TO MATCH FILTER) Fig. 2 block diagram SL6654 ABSOLUTE MAXIMUM RATINGS Supply voltage Storage temperature Operating temperature Mixer input 8V -55°C to +150°C -55°C to +125°C 1V rms ELECTRICAL CHARACTERISTICS Test conditions (unless otherwise stated): VCC = 2.5V to 7.5V, Tamb = -30°C to +85°C, IF = 455kHz, RF = 50MHz, Quad Coil Working Q = 30 Value Characteristics Min. Overall Supply current Sensitivity AM rejection Vbias Co-channel rejection Mixer RF input impedance OSC input impedance OSC input bias Mixer gain 3rd order input intercept OSC input level OSC frequency Oscillator Current sink Hfe fT IF Amplifier Gain Frequency Diff. input impedance Detector Audio output level Ultimate S/N ratio THD Output impedance Inter-output isolation RSSI Output (Tamb = +25°C) Output current Output current Current change Linear dynamic range Typ. Max. Units Conditions 1.0 1.5 5 3 40 1.2 7 20 10 1.4 mA µV µV dB V dB 20dB SINAD 12dB SINAD RF input