TYPICAL APPLICATIONS
CURRENT SOURCE MIRROR
V+ = +5V
CURRENT SOURCE WITH GATE CONTROL
V+ = +5V
1/2 ALD1103
V+ = +5V
Q
3
Q
4
Q
3
Q
4
I
SET
R
SET
I
SET
I
SOURCE
R
SET
I
SOURCE
Digital Logic Control
of Current Source
ON
Q
1
1/4 ALD1103
OFF
: N - Channel MOSFET
Q
1
Q
3,
Q
4
: P - Channel MOSFET
Q
1
Q
2
ALD1103
Q
1
, Q
2
: N - Channel MOSFET
Q
3
, Q
4
: P - Channel MOSFET
I
SOURCE
= I
SET
= V+ -Vt
R
SET
~
=
4
R
SET
DIFFERENTIAL AMPLIFIER
V+
CURRENT SOURCE MULTIPLICATION
V+ = +5V
PMOS PAIR
Q
3
Q
4
V
OUT
I
SET
R
SET
I
SOURCE
= I
SET
x N
V
IN
+
Q
1
Q
2
NMOS PAIR
Q
SET
Q
1
Q
2
Q
3
Q
N
V
IN
-
ALD1103
Current
Source
Q
1
, Q
2
: N - Channel MOSFET
Q
3
, Q
4
: P - Channel MOSFET
Q
SET,
Q
1
..Q
N
: ALD 1101 or ALD 1103
N - Channel MOSFET
ALD1103
Advanced Linear Devices
5
ALD [ ADVANCED LINEAR DEVICES ]
