TYPICAL APPLICATIONS
CURRENT SOURCE MIRROR
CURRENT SOURCE WITH GATE CONTROL
+
V
= +5V
+
V
= +5V
1/2 ALD1107
or ALD1117
1/2 ALD1107
or ALD1117
+
V
= +5V
Q
Q
4
3
Q
3
Q
4
I
R
SET
SET
I
SOURCE
I
R
SET
SET
I
SOURCE
Digital Logic Control
of Current Source
ON
Q
Q
2
Q
1
1
1/4 ALD1106
or 1/2 ALD1116
I
= I
=
SOURCE
SET
+
V
-Vt
1/2 ALD1106
or ALD1116
R
SET
4
OFF
~
=
Q , Q : N - Channel MOSFET
R
SET
Q
Q
: N - Channel MOSFET
: P - Channel MOSFET
4
1
2
1
3,
Q , Q : P - Channel MOSFET
Q
3
4
CURRENT SOURCE MULTIPLICATION
DIFFERENTIAL AMPLIFIER
+
V
1/2 ALD1107
or ALD1117
+
V
= +5V
PMOS PAIR
NMOS PAIR
I
R
SET
SET
Q
I
= I
x N
SET
SOURCE
Q
Q
4
3
V
V
OUT
Q
Q
Q
3
Q
N
1
2
SET
Q
Q
1
2
-
+
V
IN
IN
Current
Source
1/2 ALD1106
or ALD1116
Q
Q ..Q : ALD1106 or ALD1116
1 N
Q , Q : N - Channel MOSFET
SET,
1
2
N - Channel MOSFET
Q , Q : P - Channel MOSFET
3
4
ALD1107/ALD1117
Advanced Linear Devices
4