mc13109 Freescale Semiconductor, Inc, mc13109 Datasheet - Page 11

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

ELECTRICAL CHARACTERISTICS
Low Battery Detect
pin to set the threshold for the low battery detect. The voltage
at the “Ref” input pin is compared to an internal 1.23 V
(Test Conditions: V CC = 2.6 V, T A = 25 C.)
MOTOROLA ANALOG IC DEVICE DATA
Average Threshold
Hysteresis
Input Current
Output High Voltage
Output Low Voltage
An external resistor divider is connected to the “Ref” input
Voltage
Characteristic
Data Amp
Output
Signal
Data
Take average of rising
V in = 1.6 V
V ref = 1.6, R L = 3.9 k
V ref = 0.9, R L = 3.9 k
and falling threshold
Condition
– 20
– 30
– 40
– 50
– 60
–10
–
10
0
(continued)
– 40
Figure 4. Typical Expander Response
Figure 3. Data Amp Operation
– 30
Input
Pin
Ref
Ref
Ref
Ref
–
MC13109
R x AUDIO IN (dBV)
Measure
– 20
BD Out
BD Out
BD Out
BD Out
Ref/
Ref/
Pin
Ref
Bandgap reference voltage. The “BD Out” pin is open
collector and requires and external pull–up resistor to V CC .
–10
Threshold
E Out = –5.0 dBV
Typical at THD = 5 %
Symbol
V OH
V OL
Hys
I in
0
V CC – 0.1
Min
–50
–
–
–
10
1.23
5.71
0.12
Typ
4.0
2.6
Data Amp
Hysteresis
Max
+50
0.4
–
–
–
Unit
mV
nA
V
V
V
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