ADC122S706_15 Datasheet, PDF (8/31 Pages) Texas Instruments – Dual 12-Bit, 500 kSPS to 1 MSPS, Simultaneous Sampling A/D Converter

ADC122S706
SNAS408A – NOVEMBER 2007 – REVISED MARCH 2013
www.ti.com
CS
SCLK
t_ACQ
t_CONV
12
3
45
6
7
8 9 10 11 12 13 14 15 16
DOUTA
CS
SCLK
4 Leading Zeroes DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Channel A Data
t_{Power Down}
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
DOUTA
4 Leading Zeroes
DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Channel B Data
Figure 2. ADC122S706 Single Conversion Timing Diagram (SINGLE Data Output Mode)
CS
SCLK
t_ACQ
t_CONV
t_PD
t_ACQ
t_CONV
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8
D_OUTB
HI-Z
DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
MSB
LSB
DB11 DB10 DB9 DB8
MSB
D_OUTA
HI-Z
DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
MSB
LSB
DB11 DB10 DB9 DB8
MSB
Figure 3. ADC122S706 Continuous Conversion Timing Diagram (DUAL Data Output Mode)
D_OUT
t_r
2.4V
0.8V
t_f
Figure 4. D_OUT Rise and Fall Times
SCLK
CS
1
2
t_CSSU
Figure 6. Valid CS Assertion Times
SCLK
V_IL
D_OUT
t_DH
t_DA
2.4V
0.8V
Figure 5. D_OUT Hold and Access Times
CS
V_IH
D_OUT
D_OUT
90% ^90%
10%
t_DIS
90%
10% ^10%
Figure 7. Voltage Waveform for t_DIS
8
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