MC13109A datasheet(9/28 Pages) MOTOROLA

Part #	MC13109A

Description	UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC

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Manufacturer	MOTOROLA [Motorola, Inc]

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MC13109A

9

MOTOROLA RF/IF DEVICE DATA

ELECTRICAL CHARACTERISTICS (continued)

Compressor/ALC/Tx Mute/Limiter

The compressor analog gound is set to the half supply

reference so the input and output swing capability will

increase as the supply voltage increases. The “C In” input is

ac coupled. The ALC (Automatic Level Control) provides a

soft limit to the output signal swing as the input voltage

increases slowly (i.e., a sine wave is maintained). The Limiter

circuit limits rapidly changing signal levels by clipping the

signal peaks. The ALC and/or Limiter can be disabled

through the MPU serial interface.

(Test Conditions: VCC = 2.6 V, fin = 1.0 kHz, TA = 25°C.)

Characteristic

Condition

Input

Measure

Symbol

Min

Typ

Max

Unit

Compressor 0 dB Gain

Level

Vin = –10 dBV, ALC

disabled, Limiter

disabled

C In

Lim Out

G

–3.0

–0.06

3.0

dB

Compressor Gain

Tracking

Vin = –30 dBV, Output

Relative to G

C In

Lim Out

Gt

–11

–10.12

–9.0

dB

Vin = –50 dBV, Output

Relative to G

–23

–20.16

–17

Maximum Compressor

Gain

Vin –70 dBV

C In

Lim Out

AVmax

–

29

–

dB

Total Harmonic

Distortion

Vin –10 dBV, ALC

disabled, Limiter

disabled

C In

Lim Out

THD

–

0.5

–

%

Input Impedance

–

C In

Lim Out

Zin

–

16

–

k

Ω

Attack Time

Ccap = 1.0 µF,

Rfilt = 20 kΩ

(see Appendix B)

C In

Lim Out

ta

–

3.0

–

ms

Release Time

Ccap = 1.0 µF,

Rfilt = 20 kΩ

(see Appendix B)

C In

Lim Out

tr

–

13.5

–

ms

Expander to

Compressor Crosstalk

V (C In) = 0 Vrms,

Vin = –10 dBV

Rx

Audio In

Lim Out

CT

–

–43.6

–

dB

Tx Data Mute

Vin = –10 dBV, ALC

disabled

No popping detectable

during Rx Mute

transitions

C In

Lim Out

Me

–

–76

–

dB

ALC Dynamic Range

–

C In

Lim Out

DR

–

–18 to 2.5

–

dBV

ALC Output Level

Vin = –18 dBV

C In

Lim Out

ALCout

–

–16

–

dBV

Vin = –2.5 dBV

–

–11.4

–

Limiter Output Level

ALC disabled

C In

Tx Out

Vlim

–

0.8

–

Vpp

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