Datasheet

TC7129
DS21459E-page 12  2002-2012 Microchip Technology Inc.
Figure 4-9: Accuracy Errors in Dual-Slope Conversion.
Figure 4-10: Integration Waveform.
Integrate
De-integrate
Time
Clock Pulses
Overshoot due to zero-crossing between
clock pulses
Integrator Residue Voltage
Overshoot caused by comparato
r
delay of 1 clock pulse
INT
1
Integrate
DE
1
De-integrate
REST X10
Zero Integrate
and Latch
DE
2
REST X10
DE
3
Zero Integrate
Integrator
Residual Voltage
TC7129
Note: Shaded area greatly expanded in time and amplitude.