ЦОС_Заочники2013 / Курсовая МПиЦОС 2011 / Справочная информация / ADC&DAC / tlc320ac01
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Time – ms
ADC BAND-PASS GROUP DELAY
1
TA = 25° C
0.9fs = 8 kHz
FCLK = 144 kHz
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fi – Input Frequency – kHz
NOTE A : Absolute Frequency (kHz) + |
Normalized Frequency FCLK (kHz) |
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Figure 5 – 7
5–7
Attenuation – dB
DAC LOW-PASS RESPONSE
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TA = 25° C |
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fs = 9.6 kHz |
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– 10 |
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FCLK = 144 kHz |
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– 20 |
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– 30 |
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– 40 |
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– 50 |
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– 60 |
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fi – Input Frequency – kHz |
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Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
144
Figure 5 – 8
5–8
DAC LOW-PASS RESPONSE
Attenuation – dB
0.5
TA = 25° C
0.4 fs = 9.6 kHz FCLK = 144 kHz
0.3
0.2
0.1
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–0.1
–0.2
–0.3
–0.4
–0.5
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3.5 |
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fi – Input Frequency – kHz
Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
144
Figure 5 – 9
5–9
DAC LOW-PASS GROUP DELAY
Time – ms
1
TA = 25° C
0.9fs = 9.6 kHz
FCLK = 144 kHz
0.8
0.7
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0.5
0.4
0.3
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0.1
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fi – Input Frequency – kHz
NOTE A : Absolute Frequency (kHz) + |
Normalized Frequency FCLK (kHz) |
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144 |
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Figure 5 – 10
5–10
DAC (sin x)/x CORRECTION FILTER RESPONSE
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dB |
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– |
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Magnitude |
– 2 |
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– 4 |
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TA = 25° C |
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Input = ± |
3-V Sine Wave |
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– 6 |
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Normalized Frequency |
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Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
288
Figure 5 – 11
5–11
DAC (sin x)/x CORRECTION FILTER RESPONSE
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TA = 25° C |
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Input = ± |
3-V Sine Wave |
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s |
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– |
300 |
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Delay |
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Group |
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Normalized Frequency |
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Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
288
Figure 5 – 12
5–12
DAC (sin x)/x CORRECTION ERROR
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TA = 25° C |
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1.6 |
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Input = ± |
3-V Sine Wave |
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1.2 |
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0.8 |
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(sin x) /x Correction |
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dB |
0.4 |
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– |
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Error |
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Magnitude |
0 |
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– 0.4 |
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– 0.8 |
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19.2-kHz (sin x) /x |
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Distortion |
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–1.2 |
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–1.6 |
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– 2 |
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Normalized Frequency |
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Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
288
Figure 5 – 13
5–13
5–14
6 Application Information
TMS320C2x/3x |
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TLC320AC01 |
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DAC VDD |
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CLKOUT |
14 |
MCLK |
DAC VMID |
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DX |
DIN |
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DAC GND |
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11 |
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DR |
DOUT |
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ADC VDD |
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FSX |
FS |
ADC VMID |
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FSR |
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SCLK |
ADC GND |
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CLKX |
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DGTL VDD |
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CLKR |
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DGTL GND |
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NOTE A: Terminal numbers shown are for the FN package.
5 |
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5 V |
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0.1 |
F |
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0.1 F |
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5 V |
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0.1 |
F |
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0.1 F |
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5 V |
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0.1 F |
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DGND |
AGND |
Figure 6 –1. Stand-Alone Mode (to DSP Interface)
TMS320C2x/3x |
TLC320AC01 |
CLKOUT |
14 |
MCLK |
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DX |
10 |
DIN |
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DR |
11 |
DOUT |
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FSX |
12 |
FS |
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FSR |
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CLKX |
13 |
SCLK |
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CLKR |
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NOTE A: Terminal numbers shown are for the FN package.
Figure 6 –2. Codec Mode (to DSP Interface)
6–1
TMS320C2x/3x |
TLC320AC01 |
CLKOUT |
14 |
MCLK |
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DX |
10 |
DIN |
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DR |
11 |
DOUT |
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FSX |
12 |
FS |
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FSR |
FSD |
CLKX |
13 |
SCLK |
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CLKR |
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TLC320AC01 |
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MCLK |
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DIN |
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DOUT |
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FS |
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FSD |
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SCLK |
Master Mode
Slave Mode
NOTE A: Terminal numbers shown are for the FN package.
Figure 6 – 3. Master With Slave (to DSP Interface)
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10 kΩ |
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10 kΩ |
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IN + |
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VI† |
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– |
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10 kΩ |
TLE2022 |
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10 kΩ |
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– |
IN – |
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ADC VMID |
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TLE2022 |
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† The VI source must be capable of sinking a current equal to [ADC VMID + |VI|(max)]/10 kΩ .
Figure 6 – 4. Single-Ended Input (Ground Referenced)
6–2