TC500_08 Datasheet, PDF (10/38 Pages) Microchip Technology – Precision Analog Front Ends with Dual Slope ADC

TC500/A/510/514
Analog
Input (V_IN)
S₁
±
Ref
Voltage
R_INT
C_INT
Integrator
–
+
V_{INT –}
+
TC510
Comparator
Switch Driver
Polarity Control
Phase
Control
Control
Logic
CMPTR Out
V_IN ≈ V_REF
V_IN ≈ 1/2 V_REF
V_SUPPLY
V_INT
T_INT T_DEINT
FIGURE 4-3:
Basic Dual Slope Converter.
AB
I/O
Microcomputer
ROM
Timer
RAM
Counter
DS21428E-page 10
© 2008 Microchip Technology Inc.