TLC32044C Datasheet, PDF (34/39 Pages) Texas Instruments – VOICE-BAND ANALOG INTERFACE CIRCUITS

TLC32044C, TLC32044E, TLC32044I, TLC32044M, TLC32045C, TLC32045I
VOICE-BAND ANALOG INTERFACE CIRCUITS
SLAS017F – MARCH 1988 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
AIC TRANSMIT AND RECEIVE
LOW-PASS FILTER
20
10
0
–10
–20
–30
– 40
– 50
– 60
SCF Clock f = 288 kHz
– 70 ^{TA = 25°C}
Input = ± 3-V Sine wave
– 80
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Normalized Frequency – kHz × ^{SCF Clock Frequency}
288 kHz
Figure 12
AIC TRANSMIT AND RECEIVE
LOW-PASS FILTER
3
SCF Clock f = 288 kHz
TA = 25°C
2.5 _{Input = ± 3-V Sine wave}
2
1.5
1
0.5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
SCF Clock Frequency
Normalized Frequency – kHz ×
288 kHz
Figure 13
AIC RECEIVE-CHANNEL
BANDPASS FILTER
20
10
0
–10
–20
–30
– 40
– 50
– 60
Low-Pass SCF Clock f = 288 kHz
High-Pass SCF Clock f = 8 kHz
– 70
TA = 25°C
Input = ± 3-V Sine wave
– 80
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Frequency – kHz
Figure 14
AIC RECEIVE-CHANNEL
HIGH-PASS FILTER
20
SCF Clock f = 8 kHz
10 ^{TA = 25°C}
Input = ± 3-V Sine wave
0
–10
–20
–30
– 40
– 50
– 60
0 50 100 150 200 250 300 350 400 450 500
A/D Conversion Rate
Normalized Frequency – kHz ×
8 k samples/s
Figure 15
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