MC13109
ELECTRICAL CHARACTERISTICS (continued)
Speaker Amplifier/SP Mute
The Speaker Amplifier is an inverting rail–to–rail
operational amplifier. The non–inverting input terminal is
connected to the internal VB half supply reference. External
resistors and capacitors are used to set the gain and
frequency response. The “SA In” input is ac coupled.
(Test Conditions: VCC = 2.6 V, TA = 25°C, fin = 1.0 kHz, External Resistors Set for Gain of 1.)
Characteristic
Condition
Input Measure
Pin
Pin
Symbol
Min
Typ
Max
Unit
Maximum Output
Swing
VCC = 2.3 V,
RL = 130 Ω
VCC = 2.3 V,
RL = 600 Ω
VCC = 3.4 V,
RL = 600 Ω
SA In SA Out VOmax
–
0.8
–
Vpp
–
2.0
–
–
3.0
–
SP Mute
Vin = –20 dBV
SA In SA Out
Msp
–
–70
–
dB
RL = 130 Ω
No popping detectable
during SP Mute
transitions
Mic Amplifier (See Figure 6)
The Mic Amplifier is an inverting rail–to–rail output
operational amplifier with the non–inverting input terminal
connected to the internal VB half supply reference. External
resistors and capacitors are connected to set the gain and
frequency response. The “Tx In” input is ac coupled.
(Test Conditions: VCC = 2.6 V, TA = 25°C, fin = 1.0 kHz, External Resistors Set for Gain of 1.)
Characteristic
Condition
Input Measure
Pin
Pin
Symbol
Min
Typ
Max
Unit
Open Loop Gain
Gain Bandwidth
Maximum Output
Swing
–
–
RL = 10 kΩ
Tx In Amp Out AVOL
–
60
–
dB
Tx In Amp Out GBW
–
100
–
kHz
Tx In Amp Out VOmax
–
VCC – 0.3
–
Vpp
8
MOTOROLA ANALOG IC DEVICE DATA