TMS470R1B512 AD [Analog Devices], TMS470R1B512 Datasheet - Page 43

• Manufacturer Part Number: TMS470R1B512
• Description: 16/32-Bit RISC Flash Microcontroller
• Manufacturer: AD [Analog Devices]

Multi-Buffer ADC Timing Requirements
(1) This is the minimum sample/hold and conversion time that can be achieved. These parameters are dependent on many factors; for
The differential nonlinearity error shown in
difference between an actual step width and the ideal value of 1 LSB.
t
t
t
t
c(ADCLK)
d(SH)
d©)
d(SHC)
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more details, see the TMS470R1x Multi-Buffered Analog-to-Digital Converter (MibADC) Reference Guide (literature number SPNU206).
A.
(1)
1 LSB = (AD
External
V
src
Cycle time, MibADC clock
Delay time, sample and hold time
Delay time, conversion time
Delay time, total sample/hold and conversion time
REFHI
R
s
- AD
REFLO
Input Pin
0 ... 110
0 ... 110
0 ... 101
0 ... 101
0 ... 100
0 ... 100
0 ... 011
0 ... 011
0 ... 010
0 ... 010
0 ... 001
0 ... 001
0 ... 000
0 ... 000
MibADC
)/2
Figure 18. MibADC Input Equivalent Circuit
10
Figure 19. Differential Nonlinearity (DNL)
0
0
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Analog Input Value (LSB)
1
1
Figure 19
R
1 LSB
1 LSB
i
2
2
1 LSB
1 LSB
3
3
(sometimes referred to as differential linearity) is the
Differential Linearity
Error(- 1/2 LSB)
Parasitic
Capacitance
Sample Switch
4
4
C
i
16/32-Bit RISC Flash Microcontroller
5
5
SPNS107A – SEPTEMBER 2005 – REVISED AUGUST 2006
Differential Linearity
Error(1/2 LSB)
Sample
Capacitor
0.05
0.55
1.55
MIN
1
NOM
TMS470R1B512
R
leak
MAX UNIT
s
s
s
s
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