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TC500ACPE View Datasheet(PDF) - Microchip Technology

Part NameDescriptionManufacturer
TC500ACPE Precision Analog Front Ends with Dual Slope ADC Microchip
Microchip Technology Microchip
TC500ACPE Datasheet PDF : 38 Pages
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TC500/A/510/514
TTIME
Converter Status
Auto-zero
Integrator 0
Voltage VINT
Comparator
Output
Undefined
Integrate
Full-scale Input
Reference
De-integrate
Overshoot Integrator
Output
Zero
Comparator Delay
0 For Negative Input
1 For Positive Input
A
AB Inputs
B
Controller
Operation
A=0
B=1
Begin Conversion with
Auto-Zero Phase
A=1
B=0
Time Input
Integration
Phase
Sample Input Polarity
A=1
B=1
Capture
De-integration
Time
A=0
B=0
Integrator Ready for Next
Output
Conversion
Zero Phase (Auto-Zero is
Complete Idle State)
Typically = TINT
TINT
(Positive Input Shown)
Notes: The length of this phase is chosen almost arbitrarily
but needs to be long enough to null out worst case errors
(see text).
Comparator Delay +
Processor Latency
Minimizing
Overshoot
will Minimize
I.O.Z. Time
FIGURE 5-1:
Typical Dual Slope A/D Converter System Timing.
DS21428E-page 12
© 2008 Microchip Technology Inc.
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