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MC13109FB Datasheet(PDF) 6 Page - Motorola, Inc |
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MC13109FB Datasheet(HTML) 6 Page - Motorola, Inc |
6 / 28 page MC13109 6 MOTOROLA ANALOG IC DEVICE DATA ELECTRICAL CHARACTERISTICS (continued) RSSI/Carrier Detect Connect 0.01 µF to Gnd from “RSSI” output pin to form the carrier detect filter. “CD Out” is an open collector output which requires an external 100 k Ω pull–up resistor to VCC. The carrier detect threshold is programmable through the MPU interface. (RL = 100 kΩ, VCC = 2.6 V, TA = 25°C.) Characteristic Condition Input Pin Measure Pin Symbol Min Typ Max Unit RSSI Output Current Dynamic Range – Mix1 In RSSI RSSI – 65 – dB Carrier Sense Threshold CD Threshold Adjust = (10100) Mix1 In CD Out VT – 22.5 – µVrms Hysteresis – Mix1 In CD Out Hys – 2.0 – dB Output High Voltage Vin = 0 µVrms, RL = 100 k Ω, CD = (10100) Mix1 In CD Out VOH VCC – 0.1 2.6 – V Output Low Voltage Vin = 100 µVrms, RL = 100 k Ω, CD = (10100) Mix1 In CD Out VOL – 0.01 0.4 V Carrier Sense Threshold Adjustment Range Programmable through MPU Interface – – VTrange –20 – 11 dB Carrier Sense Threshold – Number of Steps Programmable through MPU Interface – – VTn – 32 – – Data Amp Comparator (see Figure 4) Inverting hysteresis comparator. Open collector output with internal 100 k Ω pull–up resistor. A band pass filter is connected between the “Det Out” pin and the “DA In” pin with component values as shown in the attached block diagram. The “DA In” input signal is ac coupled. (VCC = 2.6 V, TA = 25°C) Characteristic Condition Input Pin Measure Pin Symbol Min Typ Max Unit Hysteresis – DA In DA Out Hys 30 40 50 mV Threshold Voltage – DA In DA Out VT VCC – 0.9 VCC – 0.7 VCC – 0.5 V Input Impedance – – DA In ZI – 11 – k Ω Output Impedance – – DA Out ZO – 100 – k Ω Output High Voltage Vin = VCC – 1.0 V, IOH = 0 mA DA In DA Out VOH VCC – 0.1 2.6 – V Output Low Voltage Vin = VCC – 0.4 V, IOL = 0 mA DA In DA Out VOL – 0.03 0.4 V |
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