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ALD212908APAL
P1-P3
P4-P6
P7-P9
P10-P12
ALD212908A/ALD212908
Advanced Linear Devices
10 of 12
CASCODE CURRENT SOURCES
BASIC CURRENT SOURCES
P- CHANNEL CURRENT SOURCE
N- CHANNEL CURRENT SOURCE
TYPICAL APPLICA
TIONS
(cont.)
I
SET
V
+
= +5V
M
2
I
SOURCE
R
SET
M
3
M
1
M
1
, M
2
, M
3
, M
4
: N - Channel MOSFET
where M1 and M2 is a matched pair
and M3 and M4 is a second matched pair.
M
4
M1, M2:
ALD1101,
ALD1116,
ALD2129xx,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1106, or
1/2 ALD2108xx
V
+
= +5V
R
SOURCE
M3, M4:
ALD1101,
ALD1116,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1106, or
1/2 ALD2108xx
I
SOURCE
V
+
= +5V
R
SET
I
SET
1
2
3
M
1
5
6
8
M
2
7
M
1
, M
2
:N - Channel MOSFET
V
+
= +5V
R
SOURCE
M1, M2:
ALD1101,
ALD1116,
ALD1109xx,
ALD2129xx,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1106,
1/2 ALD1108xx, or
1/2 ALD2108xx
I
SOURCE
= I
SET
=
V
+
- Vt
R
SET
where Vt = V
GS
- V
GS(th)
= V
DS
V
+
= +5V
2
3
5
6
7
8
M
4
I
SOURCE
M
3
R
SET
I
SET
M
3
, M
4
: P - Channel MOSFET
R
SOURCE
M3, M4:
ALD1102,
ALD1117,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1107, or
1/2 ALD3107xx
I
SET
V
+
= +5V
M
1
M
3
M
2
M
4
I
SOURCE
R
SET
M
1
, M
2
, M
3
, M
4
: P - Channel MOSFET
where M1 and M2 is a matched pair
and M3 and M4 is a second matched pair.
I
SOURCE
= I
SET
=
V
+
- 2Vt
R
SET
where Vt = V
GS
- V
GS(th)
= V
DS
R
SOURCE
M1, M2:
ALD1102,
ALD1117,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1107, or
1/2 ALD3107xx
M3, M4:
ALD1102,
ALD1117,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1107, o
r
1/2 ALD3107xx
ALD212908A/ALD212908
Advanced Linear Devices
11 of 12
8 Pin Plastic SOIC Package
Millimeters
Inches
Min
Max
Min
Max
Dim
A
A
1
b
C
D-8
E
e
H
L
S
1.75
0.25
0.45
0.25
5.00
4.05
6.30
0.937
8
°
0.50
0.053
0.004
0.014
0.007
0.185
0.140
0.224
0.024
0
°
0.010
0.069
0.010
0.018
0.010
0.196
0.160
0.248
0.037
8
°
0.020
1.27 BSC
0.050 BSC
1.35
0.10
0.35
0.18
4.69
3.50
5.70
0.60
0
°
0.25
ø
SOIC-8 P
ACKAGE DRA
WING
L
C
H
S (45
°
)
ø
e
A
A
1
b
D
S (45
°
)
E
ALD212908A/ALD212908
Advanced Linear Devices
12 of 12
8 Pin Plastic DIP Package
Millimeters
Inches
Min
Max
Min
Max
Dim
A
A
1
A
2
b
b
1
c
D-8
E
E
1
e
e
1
L
S-8
ø
3.81
0.38
1.27
0.89
0.38
0.20
9.40
5.59
7.62
2.29
7.37
2.79
1.02
0
°
5.08
1.27
2.03
1.65
0.51
0.30
11.68
7.11
8.26
2.79
7.87
3.81
2.03
15
°
0.105
0.015
0.050
0.035
0.015
0.008
0.370
0.220
0.300
0.090
0.290
0.110
0.040
0
°
0.200
0.050
0.080
0.065
0.020
0.012
0.460
0.280
0.325
0.110
0.310
0.150
0.080
15
°
PDIP-8 P
ACKAGE DRA
WING
b
1
S
b
E
E
1
D
e
A
2
A
1
A
L
c
e
1
ø
P1-P3
P4-P6
P7-P9
P10-P12
ALD212908APAL
Mfr. #:
Buy ALD212908APAL
Manufacturer:
Advanced Linear Devices
Description:
MOSFET Dual N-Ch Matched Pr VGS=0.0V
Lifecycle:
New from this manufacturer.
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