MC13109A View Datasheet(PDF) - Motorola => Freescale
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MC13109A Datasheet PDF : 28 Pages
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MC13109A
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
Pin
Pin
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
C In
Lim Out
Gt
Relative to G
–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
C In
Lim Out
THD
–
0.5
–
%
disabled, Limiter
disabled
Input Impedance
–
C In
Lim Out
Zin
–
16
–
kΩ
Attack Time
Ccap = 1.0 µF,
C In
Lim Out
ta
–
3.0
–
ms
Rfilt = 20 kΩ
(see Appendix B)
Release Time
Ccap = 1.0 µF,
Rfilt = 20 kΩ
(see Appendix B)
C In
Lim Out
tr
–
13.5
–
ms
Expander to
V (C In) = 0 Vrms,
Compressor Crosstalk Vin = –10 dBV
Rx
Lim Out
CT
Audio In
Tx Data Mute
Vin = –10 dBV, ALC
disabled
C In
Lim Out
Me
No popping detectable
during Rx Mute
transitions
–
–43.6
–
dB
–
–76
–
dB
ALC Dynamic Range
–
C In
Lim Out
DR
–
–18 to 2.5
–
dBV
ALC Output Level
Limiter Output Level
Vin = –18 dBV
Vin = –2.5 dBV
ALC disabled
C In
Lim Out ALCout
–
–
C In
Tx Out
Vlim
–
–16
–11.4
0.8
–
dBV
–
–
Vpp
MOTOROLA RF/IF DEVICE DATA
9
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