MC13109A datasheet(6/28 Pages) MOTOROLA

Part #	MC13109A

Description	UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC

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Manufacturer	MOTOROLA [Motorola, Inc]

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MC13109A

6

MOTOROLA RF/IF 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

Measure

Symbol

Min

Typ

Max

Unit

RSSI Output Current

Dynamic Range

–

Mix1 In

RSSI

–

65

–

dB

Carrier Sense Threshold

CD Threshold Adjust =

(10100)

Mix1 In

CD Out

VT

–

11

–

mVrms

Hysteresis

–

Mix1 In

CD Out

Hys

–

1.5

–

dB

Output High Voltage

Vin = 0 µVrms, RL = 100

k

Ω, CD = (10100)

Mix1 In

CD Out

VOH

–

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

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

Measure

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

–

12

–

k

Ω

Output Impedance

–

DA Out

ZO

–

104

–

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

–

0.04

0.4

V

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