A
L
D
DVANCED
INEAR
EVICES, INC.
ALD4201/ALD4202M
CMOS LOW VOLTAGE, LOW CHARGE INJECTION QUAD SPST ANALOG SWITCHES
FEATURES
GENERAL DESCRIPTION
• 3V, 5V & 10V supply operation
• ±1.5V, ±2.5V & ±5V supply operation
• 0.1µW 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
The ALD4201/ALD4202M are quad SPSTCMOS 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.
BENEFITS
• Fast effective signal throughput
• Low switching transients
• Low signal loss
• Essentially no DC power consumption
• Full analog signal range over power
supply rail
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
microprocessororlogicinterfacecircuits. Built-inlevelshiftersattheinput
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.
• 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
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.
• Feedback control systems
ORDERING INFORMATION
Operating Temperature Range
PIN CONFIGURATION / BLOCK DIAGRAM
-55°C to +125°C
0°C to +70°C
0°C to +70°C
IN
D
S
1
2
16
15
14
13
12
11
10
IN
2
1
16-Pin
CERDIP
Package
16-Pin
Plastic Dip
Package
16-Pin
SOIC
Package
D
S
V
1
2
3
4
2
1
-
ALD4201 DC
ALD4202M DC
ALD4201 PC
ALD4202M PC
ALD4201 SC
ALD4202M SC
+
V
GND
5
6
7
8
NC
LOGIC TABLE
S
3
S
4
Switch State
Input Logic
D
3
D
4
ALD4201
ALD4202M
9
IN
4
IN
3
0
1
On
Off
Off
On
DC, PC, SC PACKAGE
* Contact factory for industrial temperature range.
© 1998 Advanced Linear Devices, Inc. 415Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
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