ALD1121E_12 Datasheet, PDF (1/14 Pages) Advanced Linear Devices – QUAD/DUAL EPAD® PRECISION N-CHANNEL MATCHED PAIR MOSFET ARRAY

ADVANCED
LINEAR
DEVICES, INC.
TM
e®
EPAD
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E
L
B
A
N
E
ALD1121E/ALD1123E
QUAD/DUAL EPAD^® PRECISION N-CHANNEL MATCHED PAIR MOSFET ARRAY
GENERAL DESCRIPTION
ALD1121E/ALD1123E are monolithic quad/dual EPAD^® (Electrically
Programmable Analog Device) N-channel MOSFETs with electrically
adjustable threshold (turn-on) voltage. The ALD1121E/ALD1123E are
precision matched and adjusted (e-trimmed) at the factory resulting in
quad/dual MOSFETs that are highly matched in electrical characteristics.
The ALD1123E has four (4) separate source pins. S_N1, S_N2 share a
common substrate pin, V-₁, which has to be connected to the most
negative voltage potential. Likewise, S_N3, S_N4 share a common substrate
pin, V-₂, which has to be connected to the negative voltage potential for
S_N3, S_N4. The ALD1121E has two (2) separate source pins (S_N1, S_N2).
Both S_N1, S_N2 share a common substrate, pin 4, which has to be
connected to the most negative voltage potential. For a given input voltage,
the threshold voltage of a MOSFET device determines its drain on-current,
resulting in an on-resistance characteristic that can be precisely preset and
then controlled by the input voltage very accurately.
Using an ALD1121E/ALD1123E is simple and straight forward. The
MOSFETs function as n-channel MOSFETs, except that all the devices
have exceptional matching to each other in electrical characteristics. For
a given input voltage, the threshold voltage of a MOSFET device determines
its drain on-current, resulting in an on-resistance characteristic that can be
precisely preset and then controlled by the input voltage very accurately.
Since these devices are on the same monolithic chip, they also exhibit
excellent tempco matching characteristics.
BENEFITS
• Precision matched electrically after
packaging
• Simple, elegant single-chip user option
to trim voltage/current values
• Excellent device matching characteristics
with or without additional electrical trim
• Remotely and electrically trim parameters
on circuits that are physically inaccessible
PIN CONFIGURATION
ALD1121E
P_{N1 1}
M1
G_N1 2
D_{N1 3}
S_N1,V- ₄
8 SN2
7 D_N2
6 ^GN2
M2
5 PN2
TOP VIEW
SAL, PAL, DA PACKAGES
ALD1123E
ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))
Operating Temperature Range*
0°C to +70°C
0°C to +70°C
-55°C to +125°C
8-Pin SOIC
Package
8-Pin Plastic Dip
Package
8-Pin CERDIP
Package
ALD1121ESAL
ALD1121EPAL
ALD1121EDA
16-Pin SOIC
Package
16-Pin Plastic Dip
Package
16-Pin CERDIP
Package
ALD1123ESCL
ALD1123EPCL
ALD1123EDC
* Contact factory for leaded (non-RoHS) or high temperature versions.
BLOCK DIAGRAM
PN1 (1)
DN1 (3)
DN2 (15)
ALD1123E
PN2 (13)
PN3 (9)
DN3 (11)
DN4 (7)
PN4 (5)
GN1(2)
GN2 (14) GN3(10)
GN4 (6)
P_N1 1
M1
G_N1 2
D_N1 3
V-_1, S_N1 4
P_N4 ⁵
G_N4 6
D_N4 7
V-_2, S_N4 8
M4
M2
16 S_N2
15 D_N2
14 G_N2
13 PN2
12 S_N3
11 D_N3
10 G_N3
M3
9 P_N3
TOP VIEW
SCL, PCL, DC PACKAGES
BLOCK DIAGRAM
ALD1121E
P_N1 (1)
D_N1 (3)
D_N2 (7)
P_N2 (5)
G_N1(2)
G_N2 (6)
M1
SN1 (4)
~
M2
M3
V-1 (4)
SN2 (16)
SN3 (12)
~
M4
V-2 (8)
SN4 (8)
M1
S_N1(4)
~
M2
V- (4)
S_N2 (8)
Rev 2.0 ©2012 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: [phone] Fax: [phone]
www.aldinc.com