Datasheet

Functional Description
MC13783 Technical Data, Rev. 3.5
Freescale Semiconductor 31
Figure 8. Audio Input Section Diagram
Table 17. Amplifiers Amc1L, Amc1R, Amc2, Atxin Performance Specifications
Parameter Condition Min Typ Max Units
Gain (V to V) at 1.0 kHz Vin = 100 mVpp 11.8 12 12.2 dB
Input Impedance (V to V) Amc1L, Amc1R, Amc2 — 8.5 10 11.7 kΩ
Atxin — — 40 — kΩ
Gain (Atxin) TXIN to Voice Codec — -0.2 0 0.2 dB
PSRR with respect to BP
20 Hz – 10 kHz
inputs AC grounded
——90—dB
Input Noise input to REFA CCITT
psophometricly
weighted
—— 1µV
RMS
MC1RIN
MC2IN
TXIN
Input
Selector
Voice
Codec
PGAtxL
Microphone
Bias
MC1RB
MC1LB
MC2B
Rbias
Rbias
Rbias
Detect
MC1LIN
Input
Selector
PGAtxR
PGAtxR
PGAtxL
TXOUT
To Rx
Amc1L
Amc1R
Amc2
Atxin
From USB
From RXINR
From RXINL