TYPICAL APPLICATIONS
CURRENT SOURCE MIRROR
V+ = +5V
1/2 ALD1107
or ALD1117
V+ = +5V
Q
3
Q
4
CURRENT SOURCE WITH GATE CONTROL
V+ = +5V
1/2 ALD1107
or ALD1117
Q
3
Q
4
I
SET
R
SET
I
SOURCE
I
SET
Digital Logic Control
of Current Source
ON
Q
1
1/4 ALD1106
or 1/2 ALD1116
R
SET
I
SOURCE
Q
1
1/2 ALD1106
or ALD1116
Q
1
, Q
2
: N - Channel MOSFET
Q
3
, Q
4
: P - Channel MOSFET
Q
2
I
SOURCE
= I
SET
= V+ -Vt
R
SET
~
=
4
R
SET
OFF
Q
1
: N - Channel MOSFET
Q
3,
Q
4
: P - Channel MOSFET
DIFFERENTIAL AMPLIFIER
CURRENT SOURCE MULTIPLICATION
V+
1/2 ALD1107
or ALD1117
V+ = +5V
PMOS PAIR
Q
3
Q
4
V
OUT
V
IN
+
Q
1
Q
2
NMOS PAIR
V
IN
-
I
SET
R
SET
I
SOURCE
= I
SET
x N
Q
SET
Q
1
Q
2
Q
3
Q
N
1/2 ALD1106
or ALD1116
Current
Source
Q
1
, Q
2
: N - Channel MOSFET
Q
3
, Q
4
: P - Channel MOSFET
Q
SET,
Q
1
..Q
N
: ALD1106 or ALD1116
N - Channel MOSFET
ALD1106/ALD1116
Advanced Linear Devices
4 of 11
ALD [ ADVANCED LINEAR DEVICES ]
