mc13109 Freescale Semiconductor, Inc, mc13109 Datasheet - Page 6

• Manufacturer Part Number: mc13109
• Description: Universal Cordless Telephone Subsystem
• Manufacturer: Freescale Semiconductor, Inc

ELECTRICAL CHARACTERISTICS
RSSI/Carrier Detect
carrier detect filter. “CD Out” is an open collector output
which requires an external 100 k
Data Amp Comparator (see Figure 4)
with internal 100 k
connected between the “Det Out” pin and the “DA In” pin with
(R L = 100 k , V CC = 2.6 V, T A = 25 C.)
(V CC = 2.6 V, T A = 25 C)
RSSI Output Current
Carrier Sense Threshold
Hysteresis
Output High Voltage
Output Low Voltage
Carrier Sense Threshold
Carrier Sense Threshold
Hysteresis
Threshold Voltage
Input Impedance
Output Impedance
Output High Voltage
Output Low Voltage
6
Connect 0.01 F to Gnd from “RSSI” output pin to form the
Inverting hysteresis comparator. Open collector output
Dynamic Range
Adjustment Range
– Number of Steps
Characteristic
Characteristic
pull–up resistor. A band pass filter is
CD Threshold Adjust =
V in = 0 Vrms, R L =
V in = 100 Vrms, R L =
Programmable through
Programmable through
V in = V CC – 1.0 V,
V in = V CC – 0.4 V,
(10100)
100 k , CD = (10100)
100 k , CD = (10100)
MPU Interface
MPU Interface
I OH = 0 mA
I OL = 0 mA
Condition
Condition
–
–
–
–
–
–
pull–up resistor to V CC .
(continued)
Mix 1 In
Mix 1 In
Mix1 In
Mix 1 In
Mix 1 In
Input
Input
DA In
DA In
DA In
DA In
Pin
Pin
–
–
–
–
MC13109
Measure
Measure
CD Out
CD Out
CD Out
CD Out
DA Out
DA Out
DA Out
DA Out
DA Out
DA In
RSSI
Pin
Pin
–
–
The carrier detect threshold is programmable through the
MPU interface.
component values as shown in the attached block diagram.
The “DA In” input signal is ac coupled.
V Trange
Symbol
Symbol
RSSI
V OH
V OH
V OL
V OL
V Tn
Hys
Hys
Z O
V T
V T
Z I
V CC – 0.1
V CC – 0.9
V CC – 0.1
MOTOROLA ANALOG IC DEVICE DATA
Min
– 20
Min
30
–
–
–
–
–
–
–
–
V CC – 0.7
22.5
0.01
0.03
Typ
Typ
100
2.0
2.6
2.6
65
32
40
11
–
V CC – 0.5
Max
Max
0.4
0.4
11
50
–
–
–
–
–
–
–
–
Unit
Unit
Vrms
mV
dB
dB
dB
k
k
V
V
V
V
V
–