ALD310708 datasheet(6/9 Pages) ALD

6 / 9 page

ALD310708A/ALD310708, Vers. 1.5

Advanced Linear Devices, Inc.

6 of 9

TYPICAL APPLICATIONS

LOW VOLTAGE CURRENT SOURCE W/ GATE CONTROL

LOW VOLTAGE CURRENT SOURCE MIRROR

LOW VOLTAGE DIFFERENTIAL AMPLIFIER

0.5% PRECISION LOW VOLTAGE CURRENT SOURCE MULTIPLICATION

ISET

RSET

V+

I SOURCE

M1, M2: N-Channel MOSFET

M3, M4: P-Channel MOSFET

V+ = +2.0V to +5.0V

1/2 ALD1108xx,

1/2 ALD2108xx,

ALD1109xx or

ALD2129xx

1/2 ALD310708

ISOURCE = ISET

V+ - Vt

RSET

ISOURCE

RSET

ISET

OFF

Digital Logic Control

of Current Source

1/4 ALD1108xx,

1/4 ALD2108xx,

1/2 ALD1109xx or

1/2 ALD2129xx

: N-Channel MOSFET

M3, M4: P-Channel MOSFET

1/2 ALD310708

V+ = +2.0V to +5.0V

PMOS PAIR

VIN-

NMOS PAIR

VIN+

Current

Source

VOUT

M1, M2: N-Channel MOSFET

M3, M4: P-Channel MOSFET

V+ = +5.0V

1/2 ALD1108xx,

1/2 ALD2108xx,

ALD1109xx or

ALD2129xx

1/2 ALD310708

MNSET: MN1, MN2..MNX: N-Channel MOSFET

ISOURCE = ISET . X . Y

MPSET

V+ = +2.0V to +5.0V

MPSET: MP1, MP2..MPY: P-Channel MOSFET

MP1

MP2

MP3

MPY

ALD1108xx or

ALD2108xx

ISET

ISOURCE = ISET . X

RSET

MNSET

MN1

V+ = +2.0V to +5.0V

ALD310708

MN2

MN3

MNX

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