
ЦОС_Заочники2013 / Курсовая МПиЦОС 2011 / Справочная информация / ADC&DAC / tlc320ac01
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2.4 V
SCLK
SCLK Period/2
FSD
0.8 V
td(CH-FL)
FS
0.8 V
NOTE A: Timing shown is for the TLC320AC01 operating as the master or as a stand-alone device.
Figure 4 – 4. Master or Stand-Alone FS and FSD Timing
FS
0.8 V
td(FL-FDL)
FSD
0.8 V
NOTE A: Timing shown is for the TLC320AC01 operating in the slave mode (FS and SCLK signals are generated externally). The programmed data value in the FSD register is 0.
Figure 4 – 5. Slave FS to FSD Timing
2.4 V
SCLK
0.8 V
td(CH-FDL)
FSD
0.8 V
NOTE A: Timing shown is for the TLC320AC01 operating in the slave mode (FS and SCLK signals are generated externally). There is a data value in the FSD register greater than 18 (decimal).
Figure 4 – 6. Slave SCLK to FSD Timing
4–3

2 V |
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SCLK |
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0.8 V |
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td(CH-DOUT) |
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Hi-Z |
2.4 V |
2.4 V |
DOUT |
0.4 V |
0.4 V |
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Figure 4 – 7. DOUT Enable Timing From Hi-Z |
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2 V |
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SCLK |
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0.8 V |
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td(CH-DOUTZ) |
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Hi-Z |
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DOUT |
0.8 V |
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Figure 4 – 8. DOUT Delay Timing to Hi-Z |
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td(ML-EH) |
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2 V |
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2 V |
MCLK |
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0.8 V |
0.8 V |
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tr(EH) |
td(ML-EL) |
EOC |
2.4 V |
2.4 V |
0.4 V |
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0.4 V |
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tf(EL) |
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Internal ADC |
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Conversion Time |
Figure 4 – 9. EOC Frame Timing
4–4

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Delay Is m Shift Clocks† |
Master |
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FS |
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Delay Is m Shift Clocks† |
Master FSD, |
Delay Is m Shift Clocks† |
Slave Device 1 FS |
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Slave Device 1 FSD, |
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Slave Device 2 FS |
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Slave Device 2 FSD,
Slave Device 3 FS
Slave Device
(n – 1) FSD,
Slave Device n FS
†The delay time from any FS signals to the corresponding FSD signals is m shift clocks with the value of m being the numerical value of the data programmed into the FSD register. In the master mode with slaves, the same data word programs the master and all slave devices; therefore, master to slave 1, slave 1 to slave 2, slave 2 to slave 3, etc., have the same delay time.
Figure 4 – 10. Master-Slave Frame-Sync Timing After a Delay Has Been
Programmed Into the FSD Registers
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t = 0 |
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t = 1 |
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t = 2 |
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Sampling |
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Period |
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Master AIC |
FS |
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Only Primary |
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MP |
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MP |
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MP |
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Frame Sync |
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1/2 Period |
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Master AIC |
FS |
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Only Primary |
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and Secondary |
FSD |
MP |
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MS |
MP |
MS |
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MP |
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Frame Sync |
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Value |
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Master and Slave |
FS |
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AIC Primary |
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MP |
SP |
MP |
SP |
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MP |
SP |
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Frame Sync |
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Master and Slave |
FS |
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AIC Primary and |
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MP |
SP |
MS SS |
MP |
SP MS |
SS |
MP |
SP MS SS |
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Secondary |
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Frame Sync |
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MP = Master Primary |
SP = Slave Primary |
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MS = Master Secondary |
SS = Slave Secondary |
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Figure 4 – 11. Master and Slave Frame-Sync Sequence with One Slave
4–5

4–6

5 Typical Characteristics
Attenuation – dB
ADC LOW-PASS RESPONSE
0 TA = 25° C
FCLK = 144 kHz
–10
–20
–30
–40
–50
–60
0 |
1 |
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4 |
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7 |
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10 |
fi – Input Frequency – kHz
NOTE A : Absolute Frequency (kHz) + Normalized Frequency FCLK (kHz)
144
Figure 5 – 1
5–1

Attenuation – dB
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ADC LOW-PASS RESPONSE |
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0.5 |
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0.4 |
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TA = 25° C |
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FCLK = 144 kHz |
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0.3 |
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0.2 |
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0.1 |
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0 |
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–0.1
–0.2
–0.3
–0.4
–0.5
0 |
0.5 |
1 |
1.5 |
2 |
2.5 |
3 |
3.5 |
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fi – Input Frequency – kHz
NOTE A : Absolute Frequency (kHz) + Normalized Frequency FCLK (kHz)
144
Figure 5 – 2
5–2

Time – ms
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ADC GROUP DELAY |
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1 |
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TA = 25° C |
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0.9 |
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FCLK = 144 kHz |
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0.8 |
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0.7 |
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0.6 |
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0.5 |
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0.4 |
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0.3 |
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0.2 |
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0.1 |
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0 |
1 |
2 |
3 |
4 |
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6 |
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fi – Input Frequency – kHz
Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
144
Figure 5 – 3
5–3

ADC BAND-PASS RESPONSE
Attenuation – dB
0 |
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TA = 25° C |
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fs = 8 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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0 |
1 |
2 |
3 |
4 |
5 |
6 |
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fi – Input Frequency – kHz |
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NOTE A : Absolute Frequency (kHz) + Normalized Frequency FCLK (kHz)
144
Figure 5 – 4
5–4

ADC BAND-PASS RESPONSE
Attenuation – dB
0.5
TA = 25° C
0.4fs = 8 kHz FCLK = 144 kHz
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
0 |
0.5 |
1 |
1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
fi – Input Frequency – kHz
NOTE A : Absolute Frequency (kHz) + Normalized Frequency FCLK (kHz)
144
Figure 5 – 5
5–5

Attenuation – dB
ADC HIGH-PASS RESPONSE
– 0 |
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– 5 |
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– 10 |
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– 15 |
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– 20 |
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– 25 |
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TA = 25° C |
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fs = 8 kHz |
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– 30 |
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FCLK = 144 kHz |
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0 |
50 |
100 |
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fi – Input Frequency – kHz
Normalized Frequency |
FCLK (kHz) |
NOTE A : Absolute Frequency (kHz) +
144
Figure 5 – 6
5–6