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

DUAL N-CHANNEL MATCHED MOSFET PAIR

ALD1101A/ALD1101B

ALD1101

GENERAL DESCRIPTION

The ALD1101 is a monolithic dual N-channel matched transistor pair

intended for a broad range of analog applications. These enhancement-

mode transistors are manufactured with Advanced Linear Devices' en-

hanced ACMOS silicon gate CMOS process.

The ALD1101 offers high input impedance and negative current tempera-

ture coefficient. The transistor pair is matched for minimum offset voltage

and differential thermal response, and it is designed for switching and

amplifying applications in +2V to +12V systems where low input bias

current, low input capacitance and fast switching speed are desired. Since

these are MOSFET devices, they feature very large (almost infinite)

current gain in a low frequency, or near DC, operating environment. When

used with an ALD1102, a dual CMOS analog switch can be constructed.

In addition, the ALD1101 is intended as a building block for differential

amplifier input stages, transmission gates, and multiplexer applications.

The ALD1101 is suitable for use in precision applications which require

very high current gain, beta, such as current mirrors and current sources.

The high input impedance and the high DC current gain of the Field Effect

Transistors result in extremely low current loss through the control gate.

The DC current gain is limited by the gate input leakage current, which is

specified at 50pA at room temperature. For example, DC beta of the device

at a drain current of 5mA at 25

°C is = 5mA/50pA = 100,000,000.

APPLICATIONS

• Precision current mirrors

• Precision current sources

• Analog switches

• Choppers

• Differential amplifier input stage

• Voltage comparator

• Data converters

• Sample and Hold

• Analog inverter

FEATURES

• Low threshold voltage of 0.7V

• Low input capacitance

• Low Vos grades -- 2mV, 5mV, 10mV

Ω typical

• Enhancement-mode (normally off)

• RoHS compliant

Operating Temperature Range

0

°C to +70°C0°C to +70°C

-55

°C to +125°C

8-Pin

8-Pin

8-Pin

Small Outline

Plastic Dip

CERDIP

Package (SOIC)

Package

Package

ALD1101ASAL

ALD1101APAL

ALD1101BSAL

ALD1101BPAL

ALD1101SAL

ALD1101PAL

ALD1101DA

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

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

BLOCK DIAGRAM

SOURCE 1 (1)

SUBSTRATE (8)

SOURCE 2 (7)

GATE 2 (6)

DRAIN 1 (3)

GATE 1 (2)

DRAIN 2 (5)

PIN CONFIGURATION

1

2

3

4

8

7

6

5

NC

SUBSTRATE

TOP VIEW

SAL, PAL, DA PACKAGES

* NC pin is internally connected. Do not connect externally.