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MC13110A Datasheet(PDF) 15 Page - Motorola, Inc |
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MC13110A Datasheet(HTML) 15 Page - Motorola, Inc |
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15 / 68 page  MC13110A/B MC13111A/B 15 MOTOROLA ANALOG IC DEVICE DATA PIN FUNCTION DESCRIPTION (continued) Description Equivalent Internal Circuit (52 Pin QFP) Symbol/ Type Pin Description Equivalent Internal Circuit (52 Pin QFP) Symbol/ Type QFP–52 LQFP–48 32 35 Mix2 Out (Output) Mix2 Out 35 VCC RF VCC RF 1.2 k Mix2 Out is the second mixer output. The second mixer has a 3 dB bandwidth of 2.5 MHz and an output impedance of 1.5 k Ω. The output current drive is 50 µA. 33 36 Gnd RF Ground pin for RF section of the IC. 34 37 Mix1 Out (Output) Mix1 Out 37 VCC RF VCC RF 200 The first mixer has a 3 dB IF bandwidth of 13 MHz and an output impedance of 300 Ω. The output current drive is 300 µA and can be programmed for 1.0 mA. 35 38 Mix1 In2 (Input) VCC RF VCC RF 950 950 Vref 20 k Signals should be ac–coupled to this pin, which is biased internally to VCC – 1.6 V. The single–ended and differential input impedance are about 1.6 and 1.8 k Ω at 46 MHz, respectively. 36 39 Mix1 In1 (Input) Mix1 In2, Mix1 In1 38, 39 950 950 37 38 40 41 LO1 In LO1 Out LO1 Out 41 LO1 In 40 Tank Elements, an internal varactor and capacitor matrix for 1st LO multivibrator oscillator are connected to these pins. The oscillator is useable up to 80 MHz. 39 42 Vcap Ctrl Vcap Ctrl 42 VCC RF 55 k Vcap Ctrl is the 1st LO varactor control pin. The voltage at this pin is referenced to Gnd Audio and varies the capacitance between LO1 In and LO2 Out. An increase in voltage will decrease capacitance. 40 43 Gnd Audio Ground for audio section of the IC. 41 44 SA Out (Output) 44 VCC Audio SA I 45 VCC Audio The speaker amplifier gain is set with an external feedback resistor. It should be less than 200 k Ω. The speaker amplifier can be muted through the MPU interface. 42 45 SA In (Input) SA Out VB SA In An external resistor is connected to the speaker amplifier input (SA In). This will set the gain and input impedance and must be ac–coupled. |
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Similar Description - MC13110A |
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