TMS470R1VF689 Datasheet, PDF (62/70 Pages) Texas Instruments – 16/32-BIT RISC FLASH MICROCONTROLLERS

TMS470R1VF689, TMS470R1VF688
16/32-BIT RISC FLASH MICROCONTROLLERS
SPNS001I – FEBRUARY 2002 – REVISED AUGUST 2005
multi-buffered A-to-D converter (MibADC) (continued)
External
MibADC
R_s
Input Pin
R_i
Sample Switch
V_src
Parasitic
Capacitance
Sample
Capacitor
R_leak
C_i
Figure 21. MibADC Input Equivalent Circuit
multi-buffer ADC timing requirements
t_c(ADCLK)
t_d(SH)
t_d(C)
t_d(SHC)(1)
Cycle time, MibADC clock
Delay time, sample and hold time
Delay time, conversion time
Delay time, total sample/hold and conversion time
MIN NOM MAX UNIT
0.05
μs
1
μs
0.55
μs
1.55
μs
1 This is the minimum sample/hold and conversion time that can be achieved. These parameters are dependent on many factors; for more
details, see the TMS470R1x Multi-Buffered Analog-to-Digital Converter (MibADC) Reference Guide (literature number SPNU206).
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