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MC13110A Datasheet(PDF) 16 Page - Motorola, Inc |
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MC13110A Datasheet(HTML) 16 Page - Motorola, Inc |
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16 / 68 page  MC13110A/B MC13111A/B 16 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 43 46 E Out (Output) E Out 46 VCC Audio VB The output level of the expander output is determined by the volume control. Volume control is programmable through the MPU interface. 44 47 E Cap E Cap 47 VCC Audio VCC Audio 40 k E Cap is the expander rectifier filter capacitor pin. Connect an external filter capacitor between VCC audio and E Cap. The recommended capacitance range is 0.1 to 1.0 µF. 0.47 µF is the suggested value. 45 48 E In (Input) E In 48 VCC Audio VB 30 k The expander input pin is internally biased and has input impedance of 30 k Ω. 46 49 Scr Out (Output) Scr Out 49 VCC Audio VB Scr Out is the Rx audio output. An internal low pass filter has a –3 dB bandwidth of 4.0 kHz. – 50 Ref2 50, 51 VCC Audio Reference voltage input for Low Battery Detect #2. – 51 Ref1 Ref2, Ref1 Reference voltage input for Low Battery Detect #1. 47 52 VB VB 52 VCC Audio VCC Audio 240 VB is the internal half supply analog ground reference. This pin must be filtered with a capacitor to ground. A typical capacitor range of 0.5 to 10 µF is desired to reduce crosstalk and noise. It is important to keep this capacitor value equal to the PLL Vref capacitor due to logic timing (Note 9). NOTE: 9. A capacitor range of 0.5 to 10 µF is recommended. The capacitor value should be the same used on the VB pin (Pin 52). An additional high quality parallel capacitor of 0.01 µF is essential to filter out spikes originating from the PLL logic circuitry. |
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Similar Description - MC13110A |
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