ALD1121EDA datasheet(1/14 Pages) ALD

Part #	ALD1121EDA

Description	QUAD/DUAL EPAD짰 PRECISION N-CHANNEL MATCHED PAIR MOSFET ARRAY

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Manufacturer	ALD [Advanced Linear Devices]

Direct Link	http://www.aldinc.com

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ALD1121E/ALD1123E

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

ALD1121ESAL

ALD1121EPAL

ALD1121EDA

16-Pin SOIC

16-Pin Plastic Dip

16-Pin CERDIP

Package

ALD1123ESCL

ALD1123EPCL

ALD1123EDC

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

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

BLOCK DIAGRAM

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. SN1, SN2 share a

common substrate pin, V-1, which has to be connected to the most

negative voltage potential. Likewise, SN3, SN4 share a common substrate

pin, V-2, which has to be connected to the negative voltage potential for

SN3, SN4. The ALD1121E has two (2) separate source pins (SN1, SN2).

Both SN1, SN2 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.

eEPAD

TM

®

N

A

B

L

E

D

E

ADVANCED

LINEAR

DEVICES, INC.

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

TOP VIEW

SCL, PCL, DC PACKAGES

TOP VIEW

SAL, PAL, DA PACKAGES

M 1

M 2

M 3

M 4

PN4 (5)

PN1 (1)

DN1 (3)

GN1(2)

DN2 (15)

PN2 (13)

GN2 (14)

PN3 (9)

DN3 (11)

GN3(10)

DN4 (7)

GN4 (6)

SN1 (4)

SN2 (16)

SN3 (12)

SN4 (8)

V-2 (8)

V-1 (4)

ALD1123E

PN1 (1)

DN1 (3)

GN1(2)

DN2 (7)

PN2 (5)

GN2 (6)

SN2 (8)

M 1

M 2

SN1(4)

V- (4)

ALD1121E

1

2

3

6

7

8

4

5

GN1

DN1

SN2

DN2

ALD1121E

SN1,V-

GN2

PN2

PN1

M 1

M 2

SN2

1

2

3

14

15

16

4

13

5

12

PN3

6

7

8

10

11

GN1

DN1

PN1

GN4

V-2, SN4

DN4

9

GN3

DN3

GN2

DN2

PN2

SN3

V-1, SN1

PN4

ALD1123E

M 1

M 2

M 4

M 3

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ALD1121EDA Datasheet(PDF) 1 Page - Advanced Linear Devices

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