TLC32044C_11 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
SCF Clock Frequency
Normalized Frequency − kHz ×
288 kHz
Figure 12
AIC TRANSMIT AND RECEIVE
LOW-PASS FILTER
3
SCF Clock f = 288 kHz
T_A = 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
Normalized Frequency − kHz × ^{SCF Clock Frequency}
288 kHz
Figure 13
AIC RECEIVE-CHANNEL
BANDPASS FILTER
20
10
0
−10
−20
−30
− 40
− 50
Low-Pass SCF Clock f = 288 kHz
−60 _{High-Pass SCF Clock f = 8 kHz}
− 70
T_A = 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
34
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265