LTC1040CN Linear Technology, LTC1040CN Datasheet - Page 10
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LTC1040CN
Manufacturer Part Number
LTC1040CN
Description
IC COMPARATOR LOW PWR DUAL 18DIP
Manufacturer
Linear Technology
Series
LTCMOS™r
Type
General Purposer
Datasheet
1.LTC1040CNPBF.pdf
(12 pages)
Specifications of LTC1040CN
Number Of Elements
2
Output Type
CMOS, TTL
Voltage - Supply
2.8 V ~ 16 V, ±2.8 V ~ 8 V
Mounting Type
Through Hole
Package / Case
18-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1040CN
Manufacturer:
ST
Quantity:
6 222
Part Number:
LTC1040CN#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
LTC1040
TYPICAL APPLICATIO S
The LTC1040 as a Linear Amplifier
With a simple RC filter, the LTC1040 can be made to
function as a linear amplifier. By filtering the logic output
and feeding it back to the negative input, the loop forces
the output duty cycle [t
V
The RC time constant is set to keep the ripple on the output
small. The maximum output ripple is: V = V
10
IN
(Figure 10).
V
IN
LT1019-5
+
–
+
–
1/2 LTC1040
ON
V
+
/(t
ON
2-Wire 0 C to 100 C Temperature Transducer with 4mA to 20mA Output
6
4
+ t
†
YELLOW SPRINGS INSTRUMENT
R
OFF
U
)] so that V
PART NO. 44201
C
Figure 10. The LTC1040 as a Linear Amplifier
6250
3200
†
ACCURACY =
LTC1040 • TA07
V
+
OUT
OUT
/f
†
S
RC and
equals
18k
CIRCUIT ERROR
AT 25 C
0.1 C
1k
ZERO
ADJUST
6
5
7
8
LM134
–
+
–
+
should be set to 0.5mV to 1mV for best results. Notice that
the higher the sampling frequency, f
This is important because the RC filter also sets the loop
response. A convenient way to keep f
under all conditions is to connect a 100k resistor to pin 16
(OSC) with no capacitance to ground.
+
LTC1040
0V
16
10
V
1/2
TRANSDUCER
100k
+
V
V
ERROR
+
–
0.2 C
9
18
1N914
4 1M
10 F
43
R
= 0.3 C
+
+
t
FULL-SCALE
ON
430
ADJUST
1 F
t
OFF
5k
2N6657
50
182
12V TO 40V
0 C = 4mA
100 C = 20mA
RETURN
LTC1040 • TA09
S
, the lower RC can be.
S
as high as possible
V
OUT
= V +
t
LTC1040 • TA08
ON
t
ON
+ t
OFF
1040fa