Maxim Integrated MAX4684 Series General Description Manual

19-1977; Rev 3; 2/03

General Description

The MAX4684/MAX4685 low on-resistance (R
voltage, dual single-pole/double-throw (SPDT) analog
switches operate from a single +1.8V to +5.5V supply.
The MAX4684 features a 0.5Ω (max) R
switch and a 0.8Ω (max) R
+2.7V supply. The MAX4685 features a 0.8Ω max on-
resistance for both NO and NC switches at a +2.7V
supply.
Both parts feature break-before-make switching action
(2ns) with t = 50ns and t
ON
tal logic inputs are 1.8V logic-compatible with a +2.7V to
+3.3V supply.
The MAX4684/MAX4685 are packaged in the chipscale
package (UCSP)™, significantly reducing the required
PC board area. The chip occupies only a 2.0mm
1.50mm area. The 4
spaced with a 0.5mm bump pitch.
________________________Applications
Speaker Headset Switching
MP3 Players
Power Routing
Battery-Operated Equipment
Relay Replacement
Audio and Video Signal Routing
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
UCSP is a trademark of Maxim Integrated Products, Inc.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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Continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
0.5 Ω /0.8 Ω Low-Voltage, Dual SPDT
ON
for its NC
ON
for its NO switch at a
ON
= 40ns at +3V. The digi-
OFF
3 array of solder bumps are
Pin Configurations/Functional Diagrams/Truth Table
MAX4684/MAX4685
GND
C1 B1 A1
NC1 NC2
C2 A2
IN1 IN2
COM1 C3 A3 COM2
NO1 NO2
C4 B4 A4
V+
UCSP
Analog Switches in UCSP
12-Bump, 0.5mm-Pitch UCSP
), low-
NC Switch R
0.5Ω max (+2.7V Supply) (MAX4684)
0.8Ω max (+2.7V Supply) (MAX4685)
NO Switch R
0.8Ω max (+2.7V Supply)
R Match Between Channels
ON
0.06Ω (max)
R Flatness Over Signal Range
ON
0.15Ω (max)
+1.8V to +5.5V Single-Supply Operation
Rail-to-Rail
1.8V Logic Compatibility
Low Crosstalk: -68dB (100kHz)
High Off-Isolation: -64dB (100kHz)
THD: 0.03%
50nA (max) Supply Current
Low Leakage Currents
1nA (max) at T
PART
MAX4684EBC
MAX4684ETB
MAX4684EUB
MAX4685EBC
MAX4685ETB
MAX4685EUB
Note: Requires special solder temperature profile describing
the Absolute Maximum Ratings section.
*UCSP reliability is integrally linked to the user's assembly
methods, circuit board material, and environment. Refer to the
UCSP Reliability Notice in the UCSP Reliability section of this
data sheet for more information.
1
V+
NO1 2
MAX4684/MAX4685
3
COM1
IN_ NO_ NC_
IN1 4
0 OFF ON
1 ON OFF
NC1 5
SWITCHES SHOWN FOR LOGIC "0" INPUT
ON
ON
®
Signal Handling
= +25°C
A

Ordering Information

PIN/BUMP-
TEMP RANGE
PACKAGE
-40°C to +85°C 12 UCSP*
10 Thi n Q FN
-40°C to +85°C
( 3 3)
-40°C to +85°C 10 µMAX
-40°C to +85°C 12 UCSP*
10 Thi n Q FN
-40°C to +85°C
( 3 3)
-40°C to +85°C 10 µMAX
MAX4684/MAX4685
10 NO2
9 COM2
8 IN2
7
NC2
6 GND
µMAX
Features
TOP
MARK
AAF
AAG
—
AAG
AAH
—
1