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ALD4201/ALD4202M
ADVANCED
LINEAR
DEVICES, INC.
GENERAL DESCRIPTION
The ALD4201/ALD4202M are quad SPST CMOS analog switches speci-
fically developed for 3 to 12 volt applications where low charge injection
and low leakage currents are important analog switch operating
characteristics. The main features are precision matching, charge
compensation circuitry, fast switching, low on-resistance and micropower
consumption. The ALD4201 operates in break-before-make switching
whereas the ALD4202M operates in make-before-break switching.
The ALD4201/ALD4202M are designed for precision applications such as
charge amplifiers, sample and hold amplifiers, data converter switches,
and programmable gain amplifiers. These switches are also excellent for
general purpose switching applications for micropower battery operated
systems.
APPLICATIONS INFORMATION
The ALD4201/ALD4202M are designed to operate with standard single or
dual power supplies of +3V to 10V or
±1.5V to ±5V. Functionality extends
down to +2V or
±1V power supply, making it suitable for lithium battery or
rechargeable battery operated systems where power efficiency and
performance are important design parameters. These switches feature
nA quiescent current and interface directly to CMOS logic levels from
microprocessor or logic interface circuits. Built- in level shifters at the input
stage provide for dual supply analog signal switching. On the board level,
low charge injection and fast operation can be obtained by using short
leads, minimizing input and output capacitances, and by adequate
bypass capacitors placed on the board at the supply nodes. For more
information, see Application Note AN4200.
The ALD4201/4202M are manufactured with Advanced Linear Devices'
enhanced ACMOS silicon gate CMOS process, and are also part of the
linear elements in Advanced Linear Devices' "Function-Specific" ASIC.
CMOS LOW VOLTAGE, LOW CHARGE INJECTION QUAD SPST ANALOG SWITCHES
FEATURES
3V, 5V & 10V supply operation
±1.5V, ±2.5V & ±5V supply operation
0.1
W power dissipation
1pC charge injection
Rail-to-rail signal range
Low on-resistance
pA leakage current
4201 break-before-make switching
4202M make-before-break switching
Built-in dual supply level translator
BENEFITS
Fast effective signal throughput
Low switching transients
Low signal loss
Essentially no DC power consumption
Full analog signal range over power
supply rail
Flexible power supply range for battery
operated systems
APPLICATIONS
Low level signal conditioning circuits
Portable battery operated instruments
Computer peripherals
PCMCIA
Fast sample and hold
Analog signal multiplexer
Programmable gain amplifiers
Switched capacitor circuits
Micropower based systems
Video/audio switches
Feedback control systems
PIN CONFIGURATION / BLOCK DIAGRAM
* Contact factory for industrial temperature range.
Operating Temperature Range
-55
°C to +125°C0°C to +70°C0°C to +70°C
16-Pin
CERDIP
Plastic Dip
SOIC
Package
ALD4201 DC
ALD4201 PC
ALD4201 SC
ALD4202M DC
ALD4202M PC
ORDERING INFORMATION
S2
DC, PC, SC PACKAGE
1
14
2
3
13
12
11
10
9
4
5
6
7
8
15
16
IN1
D1
S1
V-
GND
S4
D4
IN4
IN3
IN2
D2
V+
NC
S3
D3
Input Logic
Switch State
ALD4201
ALD4202M
0
On
Off
1
Off
On
LOGIC TABLE
2005.1 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com