TYPICAL APPLICATIONS
CURRENT SOURCE MIRROR
V+ = +5V
CURRENT SOURCE WITH GATE CONTROL
V+ = +5V
V+ = +5V
M
3
M
4
M
3
M
4
I
SET
R
SET
I
SOURCE
R
SOURCE
Digital Logic Control
of Current Source
ON
I
SET
R
SET
I
SOURCE
R
SOURCE
M
1
M
2
OFF
M1:
1/2 ALD1101,
1/2 ALD1116,
1/2 ALD1109xx,
1/2 ALD2129xx,
1/4 ALD1103,
1/4 ALD1105,
1/4 ALD1106,
1/4 ALD1108xx, or
1/4 ALD2108xx
M
1
M3, M4:
ALD1102,
ALD1117,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1107, or
1/2 ALD3107xx
M1, M2:
ALD1101,
ALD1116,
V+ - Vt
I
SOURCE
= I
SET
=
ALD1109xx,
R
SET
ALD2129xx,
where Vt = V
GS
- V
GS(th)
= V
DS
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1106,
1/2 ALD1108xx, or
1/2 ALD2108xx
M3, M4:
ALD1102,
ALD1117,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1107, or
1/2 ALD3107xx
M
1
, M
2
: N - Channel MOSFET
M
3
, M
4
: P - Channel MOSFET
: N - Channel MOSFET
M
1
M
3,
M
4
: P - Channel MOSFET
DIFFERENTIAL AMPLIFIER
CURRENT SOURCE MULTIPLICATION
V+
V+ = +5V
Package 1
I
SET
R
SET
R
SOURCE
V+ = +5V
Package N
I
SOURCE
= I
SET
x N
PMOS PAIR
M
3
M
4
V
OUT
V
IN
-
M
2
MSET, M1..MN:
N x ALD1101, N x ALD1116,
N x ALD1109xx, N x ALD2129xx,
N x ALD1103, N x ALD1106,
N x ALD1108xx, or
N x ALD2108xx
M
SET
M
1
M
2
M
3
M
N
V
IN
+
M
1
NMOS PAIR
M1, M2:
ALD1101,
ALD1116,
ALD1109xx,
ALD2129xx,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1106,
1/2 ALD1108xx, or
1/2 ALD2108xx
Current
Source
M3, M4:
ALD1102,
ALD1117,
1/2 ALD1103,
1/2 ALD1105,
1/2 ALD1107, or
1/2 ALD3107xx
All M's in the set are
from the same part number.
M
1
, M
2
: N - Channel MOSFET
M
3
, M
4
: P - Channel MOSFET
M
SET,
M
1
..M
N
: N - Channel MOSFET
ALD212900/ALD212900A
Advanced Linear Devices
9 of 12
ALD [ ADVANCED LINEAR DEVICES ]
