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TC7109CLW 数据表(PDF) 10 Page - Microchip Technology

部件名 TC7109CLW
功能描述  12-Bit 關A-Compatible Analog-to-Digital Converters
PDF  30 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

TC7109CLW 数据表(HTML) 10 Page - Microchip Technology

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TC7109/A
DS21456C-page 10
© 2006 Microchip Technology Inc.
FIGURE 3-1:
Conversion Timing (RUN/HOLD) Pin High
FIGURE 3-2:
Digital Section
Internal Clock
Integrator Output
for Normal Input
Integrator
Saturates
Internal Latch
Integrator Output
for Over Range Input
No Zero Crossing
ZI
AZ
Zero Integrator
Phase forces
Integrator Output
to 0V
Zero Crossing
Occurs
Zero Crossing
Detected
INT
Phase II
Status Output
AZ
Phase I
DE
Phase III
AZ
Fixed
2048
Counts
2048
Counts
Min.
4096
Counts
Max
Number of Counts to Zero Crossing
Proportional to VIN
After Zero Crossing, Analog section will
be in Auto-Zero Configuration
TEST
17
POL
3
OR
4
B
12
5
B
11
6
B
10
7
B
9
8
B
8
9
B
7
10
B
6
11
B
5
12
B
4
13
B
3
14
226
22
23
24
25
21
STATUS
RUN/
HOLD
OSC
IN
OSC
OUT
OSC
SEL
BUFF
OSC
OUT
MODE
To
Analog
Section
COMP OUT
AZ
INT
DE (±)
ZI
Conversion
Control Logic
Oscillator and
Clock Circuitry
High Order
Byte Outputs
Low Order
Byte Outputs
Handshake
Logic
B
2
15
B
1
16
27
SEND
18
19
20
LBEN
HBEN
CE/LOAD
1
GND
14 Latches
12-Bit Counter
14 Three-State Outputs
Latch
Clock



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