MAX4684 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 0.5 Ω/0.8 ΩLow-Voltage, Dual SPDT Analog Switches in UCSP

19-1977; Rev 3; 2/03
0.5Ω/0.8Ω Low-Voltage, Dual SPDT
Analog Switches in UCSP
General Description
The MAX4684/MAX4685 low on-resistance (R_ON), low-
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_ON for its NC
switch and a 0.8Ω (max) R_ON for its NO switch at a
+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_ON = 50ns and t_OFF = 40ns at +3V. The digi-
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 ✕ 3 array of solder bumps are
spaced with a 0.5mm bump pitch.
Features
♦ 12-Bump, 0.5mm-Pitch UCSP
♦ NC Switch R_ON
0.5Ω max (+2.7V Supply) (MAX4684)
0.8Ω max (+2.7V Supply) (MAX4685)
♦ NO Switch R_ON
0.8Ω max (+2.7V Supply)
♦ R_ON Match Between Channels
0.06Ω (max)
♦ R_ON Flatness Over Signal Range
0.15Ω (max)
♦ +1.8V to +5.5V Single-Supply Operation
♦ Rail-to-Rail^® Signal Handling
♦ 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_A = +25°C
________________________Applications
Ordering Information
Speaker Headset Switching
MP3 Players
Power Routing
Battery-Operated Equipment
Relay Replacement
Audio and Video Signal Routing
Communications Circuits
PCMCIA Cards
Cellular Phones
PART
MAX4684EBC
MAX4684ETB
MAX4684EUB
MAX4685EBC
MAX4685ETB
MAX4685EUB
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN/BUMP-
PACKAGE
12 UCSP*
10 Thin QFN
(3 ✕ 3)
10 µMAX
12 UCSP*
10 Thin QFN
(3 ✕ 3)
10 µMAX
TOP
MARK
AAF
AAG
—
AAG
AAH
—
Modems
UCSP is a trademark of Maxim Integrated Products, Inc.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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.
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4684/MAX4685
GND
NC1 C1
B1
A1 NC2
IN1 C2
A2 IN2
COM1 C3
A3 COM2
NO1 C4
B4
A4 NO2
Continued at end of data sheet.
V+
UCSP
MAX4684/MAX4685
IN_
NO_
NC_
0
OFF
ON
1
ON
OFF
SWITCHES SHOWN FOR LOGIC "0" INPUT
MAX4684/MAX4685
V+ 1
NO1 2
COM1 3
IN1 4
NC1 5
10 NO2
9 COM2
8 IN2
7 NC2
6 GND
µMAX
________________________________________________________________ Maxim Integrated Products 1
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