Datasheet

TC500/A/510/514
DS21428E-page 10 © 2008 Microchip Technology Inc.
FIGURE 4-3: Basic Dual Slope Converter.
Phase
Control
Comparator
Integrator
Output
Integrator
C
INT
Analog
Input (V
IN
)
Switch Driver
Ref
Voltage
Control
Logic
Polarity Control
S
1
I/O
Timer
Counter
ROM
RAM
Microcomputer
AB
CMPTR Out
V
SUPPLY
±
T
INT
TC510
V
INT
V
IN
≈ V
REF
V
IN
≈ 1/2 V
REF
T
DEINT
–
+
R
INT
V
INT
–
+