ald4501 Advanced Linear Devices Inc (ALD), ald4501 Datasheet - Page 4

• Manufacturer Part Number: ald4501
• Description: Quad Precision High Speed Micropower Timer
• Manufacturer: Advanced Linear Devices Inc (ALD)

ALD4501
Frequency f = 1.46/ ( R
Duty Cycle DC = R
100
5.0
2.0
1.0
0.5
0.2
0.1
50
20
10
0.01
OUTPUT SINK CURRENT AS A FUNCTION
V
QUAD ASTABLE MODE OPERATION
+
T
( FREE RUNNING OSCILLATOR )
A
RB
RB
B
RA
RA
RB
RA3
RB
RA
0.02
= 25 C
/ ( R
V
4
1
1
2
3
4
2
-
A
C
C
C
C
A
+ 2R
1
2
3
4
OF OUTPUT VOLTAGE
+ 2R
10
1
2
3
4
5
6
7
8
9
OUTPUT VOLTAGE (V)
0.05
B
B
) C
)
V
+
= 12V
0.1
TYPICAL PERFORMANCE CHARACTERISTICS
TIMER 4
TIMER 1
TIMER 2
TIMER 3
19
18
13
12
11
20
17
16
15
14
0.2
OUT
OUT
OUT
OUT
SYNCHRONIZED TIMING GENERATORS
V
1
2
3
4
+
V
V
0.5
+
TYPICAL APPLICATIONS
+
= 2V
C
= 5V
10
8
9
4
7
Advanced Linear Devices
3
5
6
2
1
1.0
13
11
19
18
15
14
12
20
17
16
OUT 2
OUT 3
OUT 1
-100
-5.0
-0.2
-0.5
-1.0
-2.0
-0.1
-10
-20
-50
V
R
+
C
C
C
R
R
R
-1.0
QUAD MONOSTABLE MODE OPERATION
V
FUNCTION OF OUTPUT VOLTAGE
OUTPUT SOURCE CURRENT AS A
+
-0.5
Timer 4 oscillates in free running mode
( 50 % Duty Cycle ) and drives the trigger
inputs of timers 1,2,3, each with indepen-
dently set time delays.
INPUT 2
INPUT 1
INPUT 3
INPUT 4
V
R
R
R
R
-
4
1
2
3
( ONE SHOT PULSE )
10
1
4
8
OUTPUT VOLTAGE (V)
(REFERENCED TO V
2
6
7
9
3
5
-0.2
V + = 5V
V + = 2V
-0.1
V + = 12V
-0.05
19
12
11
20
18
17
16
15
14
13
+
DELAY 1
DELAY 3
DELAY 2
)
DELAY 4
Pulse Delay td = 1.1R
-0.02
C
C
C
C
4
1
2
3
-0.01
9-4
C