TC911 Ver la hoja de datos (PDF) - Microchip Technology
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TC911 Datasheet PDF : 14 Pages
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TC911A/TC911B
4.0 TYPICAL APPLICATIONS
FIGURE 4-1:
+9V
THERMOMETER CIRCUIT
Temp
Out
REF02
ADJ
VREF
R1
TC911
R2
–
+
R3
VOUT
[ ( ) ] [ ] VOUT = VTEMP 1 + R2
R3 + R1
R3 X R1
R2
– VREF R1
[ ( )] d VOUT
dT
≈ 1 + R2
R3 + R1
R3 X R1
d (VTEMP)
dT
R2
K=1+
R3 X R1
≈ K (2.1 mV/C)
FIGURE 4-2:
10-VOLT PRECISION
REFERENCE
18 k
6.4V
+15V
TC911
3+ 7
6
2–
4
0.1µF
3.6 k
VOUT = 10V
6.4 k
FIGURE 4-3:
PROGRAMMABLE GAIN AMPLIFIER WITH INPUT MULTIPLEXER
+5V –5V
GND
+5V –5V
IN1
IN2
IC1b
IN3
IN4
A1 A2 A3 A4 WR
Input
Channel
Select
TC911
IC1b
+
–
+5V -5V
X1
X 10
18k
VOUT
X 100
99k
X 1000
999k
68HC11
WR Latch
GND
Gain
Select
A1 A2 A3 A4
2k
1k
1k
IC1a, b, = Quad Analog Switch
DS21481C-page 6
© 2005 Microchip Technology Inc.
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