Rev 2.0 ©2012 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286

www.aldinc.com

ALD1108E/ALD1110E

BLOCK DIAGRAM

Operating Temperature Range*

0

°C to +70°C0°C to +70°C

-55

°C to +125°C

8-Pin SOIC

8-Pin Plastic Dip

8-Pin CERDIP

Package

Package

Package

ALD1110ESAL

ALD1110EPAL

ALD1110EDA

16-Pin SOIC

16-Pin Plastic Dip

16-Pin CERDIP

Package

Package

Package

ALD1108ESCL

ALD1108EPCL

ALD1108EDC

ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))

* Contact factory for leaded (non-RoHS) or high temperature versions.

BLOCK DIAGRAM

QUAD/DUAL ELECTRICALLY PROGRAMMABLE ANALOG DEVICE (EPAD™)

V- (4)

V+(5)

ALD1110E

EPAD 1

EPAD 2

~

EPAD 1

EPAD 2

EPAD 3

EPAD 4

V- (5)

V+(13)

ALD1108E

~

GENERAL DESCRIPTION

ALD1108E/ALD1110E are monolithic quad/dual EPAD® (Electrically

Programmable Analog Device) N-channel MOSFETs with electrically

adjustable threshold (turn-on) voltage. The ALD1108E/ALD1110E are

matched and adjusted (e-trimmed) at the factory resulting in quad/dual

MOSFETs that are highly matched in threshold voltages and other 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.

Using an ALD1108E/ALD1110E 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. Since

these devices are on the same monolithic chip, they also exhibit excellent

tempco matching characteristics.

These MOSFET devices have very low input currents, and as a result a very

can drive many MOSFET inputs with practically no loading effects. Used in

precision current mirror or current multiplier applications, they can be used

to provide a current source over a 100nA to 3mA range, and with either a

positive, negative or zero tempco.

TM

®

N

A

B

L

E

D

E

BENEFITS

packaging

to trim voltage/current values

with or without additional electrical trim

on circuits that are physically inaccessible

PIN CONFIGURATION

TOP VIEW

SCL, PCL, DC PACKAGES

TOP VIEW

SAL, PAL, DA PACKAGES

1

2

3

6

7

8

4

5

V+

v+

ALD1110E

EPAD 1

EPAD 2

1

2

3

14

15

16

4

13

V+

5

12

6

7

8

10

11

V-

9

v-

v+

ALD1108E

EPAD 1

EPAD 2

EPAD 4

EPAD 3