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THS1240 Datasheet, PDF (7/20 Pages) Texas Instruments – 12-BIT 40 MSPS IF SAMPLING COMMUNICATIONS ANALOG-TO-DIGITAL CONVERTER | |||
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THS1240
12-BIT 40 MSPS IF SAMPLING COMMUNICATIONS
ANALOG-TO-DIGITAL CONVERTER
SLAS279D â JUNE 2000 â REVISED JANUARY 2001
Sample N
V(VIN)
tp(H)
td(A)
tP(L)
td(Pipe)
CLK+
Digital Output
(D0 â D11)
tc
Data Nâ7
Data Nâ6
Data Nâ5
Data Nâ4
Data Nâ3
td(O)
Data Nâ2 Data Nâ1
Data N
Data N+1 Data N+2
Figure 1. Timing Diagram
equivalent circuits
R2
BAND
R1
GAP
R1
R2
VREFOUT+
VREFOUTâ
AVDD
600 â¦
600 â¦
VCM
AVSS
Figure 2. References
VDD
VIN+
1 kâ¦
VINâ
Ï2
VCM
Ï1â²
Ï1
Ï1
Ï1â²
VCM
Ï2
Figure 3. Analog Input Stage
DVDD
R1
5 kâ¦
CLK+
DVSS
R2
5 kâ¦
To
Timing
Circuits
R1
5 kâ¦
DVDD
CLKâ
R2
5 kâ¦
DVSS
GND
Figure 4. Clock Inputs
DRVDD
10 â¦
D0âD11
DRVSS
Figure 5. Digital Outputs
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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