参数资料
型号: TC500IPE
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDIP16
封装: 0.300 INCH, PLASTIC, MS-001, DIP-16
文件页数: 2/34页
文件大小: 634K
代理商: TC500IPE
TC500/A/510/514
DS21428D-page 10
2006 Microchip Technology Inc.
FIGURE 5-1:
Typical Dual Slope A/D Converter System Timing.
Auto-zero
Integrate
Full-scale Input
Reference
De-integrate
Overshoot Integrator
Output
Zero
Converter Status
TTIME
Integrator
Voltage VINT
Comparator
Output
AB Inputs
Controller
Operation
Notes:
Comparator Delay
Begin Conversion with
Auto-Zero Phase
(Positive Input Shown)
Sample Input Polarity
The length of this phase is chosen almost arbitrarily
but needs to be long enough to null out worst case errors
(see text).
Minimizing
Overshoot
will Minimize
I.O.Z. Time
Ready for Next
Conversion
(Auto-Zero is
Idle State)
Time Input
Integration
Phase
Capture
De-integration
Time
Integrator
Output
Zero Phase
Complete
Undefined
A = 0
B = 1
A = 1
0
For Negative Input
1
For Positive Input
B = 0
B = 1
B = 0
A = 1
A = 0
Typically = TINT
TINT
0
A
B
Comparator Delay +
Processor Latency
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