AN1058 Freescale Semiconductor / Motorola, AN1058 Datasheet - Page 4

• Manufacturer Part Number: AN1058
• Description: Reducing A/D Errors in Microcontroller Applications
• Manufacturer: Freescale Semiconductor / Motorola

Application Note
4
Freescale Semiconductor, Inc.
For More Information On This Product,
FROM CPU
V
V
RH
In
V
V
V
RH
V
V
In
RH
In
RAMP GENERATOR
In
Go to: www.freescale.com
V
V
DAC
RH
RL
n
DAC
OUT
SAR
(d) Successive Approximation ADC
START
OUT
OUT
DATA OUT
Figure 1. ADC Types
(b) Tracking/Servo ADC
–
+
–
+
–
+
(c) FLASH ADC
COUNT FEEDBACK
(a) Integrating ADC
–
+
COMPARATOR
PER LEVEL
–
+
CLOCK
ONE
n
CLOCK
–
+
CLOCK
COMBINATIONAL
LOGIC
COUNTER
UP/DOWN
COUNTER
OUT
UP/DOWN
START
STOP
OUT
n
OUT
MOTOROLA
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n
AN1058