MC13109A View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MC13109A

Universal Cordless Telephone Subsystem IC

Motorola => Freescale 

MC13109A

ELECTRICAL CHARACTERISTICS (continued)

Low Battery Detect

An external resistor divider is connected to the “Ref” input

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

Bandgap reference voltage. The “BD Out” pin is open

collector and requires and external pull–up resistor to VCC.

(Test Conditions: VCC = 2.6 V, TA = 25°C.)

Characteristic

Average Threshold

Voltage

Hysteresis

Condition

Take average of rising

and falling threshold

–

Input Current

Output High Voltage

Output Low Voltage

Vin = 1.6 V

Vref = 1.6, RL = 3.9 kΩ

Vref = 0.9, RL = 3.9 kΩ

Input

Pin

Ref

Ref

–

Ref

Ref

Measure

Pin

Symbol

Min

Ref/ Threshold

–

BD Out

Ref/

Hys

–

BD Out

Ref

BD Out

BD Out

Iin

VOH

VOL

–

VCC – 0.1

–

Typ

1.23

2.0

12.33

2.59

0.6

Max

Unit

–

V

–

mV

50

nA

–

V

0.4

V

Data

Signal

Data Amp

Output

Figure 3. Data Amp Operation

Data Amp

Hysteresis

MOTOROLA RF/IF DEVICE DATA

11

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