TC514COI Microchip Technology, TC514COI Datasheet - Page 12

• Manufacturer Part Number: TC514COI
• Description: IC ANALOG FRONT END 17BIT 28SOIC
• Manufacturer: Microchip Technology
• Type: Precision Analog Front Endsr

Specifications of TC514COI

• Number Of Channels: 4
• Package / Case: 28-SOIC (7.5mm Width)
• Number Of Bits: 17
• Power (watts): 18mW
• Voltage - Supply, Analog: 5V
• Voltage - Supply, Digital: 4.5 V ~ 5.5 V
• Interface Type: Serial (3-Wire)
• Supply Voltage (min): 4.5 V
• Supply Current: 1.8 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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