MAX4731_06 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – 50Ω, Dual SPST Analog Switches in UCSP

19-2645; Rev 2 12/06
50Ω, Dual SPST Analog Switches in UCSP
General Description
The MAX4731/MAX4732/MAX4733 low-voltage, dual,
single-pole/single-throw (SPST) analog switches oper-
ate from a single +2V to +11V supply and handle rail-
to-rail analog signals. These switches exhibit low
leakage current (0.1nA) and consume less than 0.5nW
(typ) of quiescent power, making them ideal for battery-
powered applications.
When powered from a +3V supply, these switches fea-
ture 50Ω (max) on-resistance (R_ON) with 3.5Ω (max)
matching between channels, and 9Ω (max) flatness
over the specified signal range.
The MAX4731 has two normally open (NO) switches,
the MAX4732 has two normally closed (NC) switches,
and the MAX4733 has one NO and one NC switch. The
MAX4731/MAX4732/MAX4733 are available in 9-bump
chip-scale packages (UCSP™), along with 8-pin TDFN
and 8-pin µMAX^® packages. The tiny UCSP occupies a
1.52mm ✕ 1.52mm area and significantly reduces the
required PC board area.
Applications
Battery-Powered Systems
Audio/Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Cell Phones
Communications Circuits
PDAs
UCSP is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Features
o 1.52mm ✕ 1.52mm UCSP Package
o Guaranteed On-Resistance (R_ON)
25Ω (max) at +5V
50Ω (max) at +3V
o On-Resistance Matching
3Ω (max) at +5V
3.5Ω (max) at +3V
o Guaranteed < 0.1nA Leakage Current at
T_A = +25°C
o Single-Supply Operation from +2.0V to +11V
o TTL/CMOS-Logic Compatible
o -108dB Crosstalk (1MHz)
o -72dB Off-Isolation (1MHz)
o Low Power Consumption: 0.5nW (typ)
o Rail-to-Rail Signal Handling
Ordering Information
PART
MAX4731EUA
TEMP
RANGE
-40°C to +85°C
PIN/BUMP-
PACKAGE
8 µMAX
MAX4731ETA
MAX4731EBL-
MAX4732EUA
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 TDFN-EP**
9 UCSP-9
8 µMAX
MAX4732ETA
MAX4732EBL-
-40°C to +85°C
-40°C to +85°C
8 TDFN-EP**
9 UCSP-9
MAX4733EUA -40°C to +85°C 8 µMAX
MAX4733ETA
MAX4733EBL-
-40°C to +85°C
-40°C to +85°C
8 TDFN-EP**
9 UCSP-9
*Future product—contact factory for availability.
**EP = Exposed pad.
TOP
MARK
—
ALG
ABV
—
ALH
ABT
—
ALI
ABS
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
(BUMPS
ON BOTTOM)
NO1 A1
MAX4731
COM1
A2
A3 GND
NO1 1
IN1 B1
B3 IN2 ^{COM1 2}
V+ C1
C2
COM2
UCSP
C3 NO2
IN2 3
GND 4
MAX4731
Pin Configurations/Functional
Diagrams/Truth Tables
continued at end of data sheet.
IN_
NO_
0
OFF
1
ON
SWITCHES SHOWN
FOR LOGIC "0" INPUT
MAX4731
TDFN
TOP VIEW
(BUMPS
ON BOTTOM)
MAX4732
COM1
8 V+
NC1 A1
A2
7 IN1
6 COM2
5 NO2
IN1 B1
V+ C1
C2
COM2
UCSP
A3 GND _{NC1 1}
B3 IN2
C3 NC2
COM1 2
IN2 3
GND 4
MAX4732
IN_
NC_
0
ON
1
OFF
SWITCHES SHOWN
FOR LOGIC "0" INPUT
MAX4732
TDFN
8 V+
7 IN1
6 COM2
5 NC2
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