TC911B Microchip Technology, TC911B Datasheet - Page 5

• Manufacturer Part Number: TC911B
• Description: Monolithic Auto-Zeroed Operational Amplifers
• Manufacturer: Microchip Technology

Monolithic Auto-Zeroed Operational Amplifers
© 2001 Microchip Technology Inc.
TYPICAL APPLICATIONS
18 k
6.4V
68HC11
10-Volt Precision Reference
CHANNEL
SELECT
6.4 k
IN 1
IN 2
IN 3
IN 4
INPUT
3
2
+
–
+15V
DS21481A
IC1a, b, = Quad Analog Switch
+5V
A 1 A 2 A 3 A 4 WR
7
4
3.6 k
0.1 F
6
IC1b
TC911
–5V
Programmable Gain Amplifier With Input Multiplexer
GND
SELECT
V
GAIN
OUT
IC1b
= 10V
WR
A 1 A 2
+5V –5V
+5V
TEMP
OUT
+
–
5
LATCH
K = 1 +
d V OUT
V REF
V
dT
OUT
–5V
A 3 A 4
= V
R X R
REF02
=
3
+9V
R 2
TEMP
[
ADJ
1 + R
GND
1
TC911
R
X
Thermometer Circuit
1
[ (
1
2
1 + R 2
(
R + R
R X R
3
3
X
18 k
2 k
10
R + R
R X R
1
1
3
)]
3
d (V
1
1
R
X
)
99 k
TEMP
3
dT
1 k
100
] [
–
–
+
R
TC911
2
V REF
)
K (2.1 mV/ C)
X
999 k
1 k
1000
R 2
R
1
V OUT
]
TC911A
TC911B
V OUT