Datasheet

LT119A/LT319A
LM119/LM319
7
119a319afc
TYPICAL APPLICATIONS
5 Microsecond Sample-and-Hold with Zero Hold Step
10-Bit Serial Output A/D Converter
–
+
1/2 LT119A
5
4
–
+
1/2 LT119A
9
8
10
12
3
6
–5V
5V
–5V
5V
LT119/319 TA7
5V
LT1004-1.2
PN4250 PN4250
82k
10k
4.7k
1k
1k
20k*
0.1µF
†
1000µF
†
2N3904
INPUT
0V TO 3.5V
1N4148
1N4148
1N4148
3.9k
CONVERT
COMMAND
INPUT (TTL)
15k
39k
7
1k
10k*
5V
DATA
OUT
74C04
*1% FILM
†
POLYSTYRENE, MOUNT
CAPACITORS CLOSE TOGETHER
CONVERSION TIME = 10ms
* = 1%
CAPACITORS ARE POLYSTYRENE MOUNT
IN CLOSE PROXIMITY
11
4
5
–
+
1/2 LT119A
9
8
10
12
6
15V
–15V
LT119/319 TA8
3k
7
*TRIM FOR ZERO VOLTS OUT
WITH ZERO VOLTS IN
†
POLYSTYRENE CAPACITOR
3
11
–
+
+
15V
15V
–15V
5V
10µF
4.7k
12k
10k
3k
2N2907
2N2907
100Ω
240Ω
3k
1N4148
0.003µF
†
2N4931
2N2907
2N2222
3.3k
9k
20k
10pF
2pF
TO 8pF*
15V
1k
1k
9k
INPUT
1N4148
SAMPLE
HOLD0V
Q
CLR PRESET
V
S
V
OUT
CLK D
74C74
1/2 LT119A