MC33219A Datasheet, PDF (8/28 Pages) Motorola, Inc – Voice Switched Speakerphone

Freescale SMeCm33i2c1o9Anductor, Inc.
Figure 3. Attenuator Gain versus VCT (Pin 7)
10
Transmit
Receive
0
Attenuator
Attenuator
–10
– 20
– 30
– 40
– 50
–100
– 50
0
50
VCT – VB (mV)
100
150
Figure 4. Receive Attenuator versus
Volume Control
10
0
–10
VCC = 3.3 V
– 20
VCC ≥ 3.5 V
– 30
– 40
– 50
– 1.4
VCC ≤ 2.9 V
Circuit in Receive Mode
–1.2 –1.0 – 0.8 – 0.6 – 0.4 – 0.2
0
VLC VOLTAGE, WITH RESPECT TO VB (V)
10
0
–10
– 20
– 30
– 40
– 50
2.7
Figure 5. Receive Gain versus VCC
Circuit in Receive Mode
2.9
3.1
3.3
3.5
VCC (V)
200
150
100
50
0
– 50
–100
0
Figure 6. Level Detector DC Transfer
Characteristics
TLI
RLI
XDI
Iin
500
2.0 µA
TLO
RLO
CP2 Vout
1.0 µF
– 40
– 80
– 120
– 160
–200
Iin, DC INPUT CURRENT (µA)
Figure 7. Level Detector AC
Transfer Characteristics
100
R = 5.1 k, C = 0.1 µF
60
20
0
– 20
– 60
–100
0
R = 10 k, C = 0.047 µF
R = 10 k, C = 0.1 µF
TLI
RLI
R ^XDI
C
Vin
@ 1.0 kHz
TLO
RLO
500 ^CP2 Vout
2.0 µA
1.0 µF
40
80
120
160
200
Vin, INPUT SIGNAL (mVrms)
Figure 8. Level Detector AC Transfer
Characteristics versus Frequency
100
Vin = 100 mVrms
60
20
0
– 20
100
TLI
RLI
5.1 k ^XDI
C _{0.1 µF}
Vin
TLO
RLO
500 ^CP2 Vout
2.0 µA
1.0 µF
300
1.0 k
10 k
f, FREQUENCY (Hz)
8
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