MAX4721

Features:

`USB 1.1 Signal Switching
`<2ns Differential Skew
`-3dB Bandwidth: >300MHz
`Low 15pF On-Channel Capacitance
`Low RON (max) Switches
        4.5Ω (max) (+3V Supply)
        3Ω (max) (+5V Supply)
`0.3Ω (max) RON Match (+3V Supply)
`1.2Ω (max) RON Flatness (+3V Supply)
`<0.5nA Leakage Current at T_A = +25
`High Off-Isolation: -55dB (10MHz)
`Low Crosstalk: -80dB (10MHz)
`Low Distortion: 0.03%
`+1.8V CMOS-Logic Compatible
`Single-Supply Operation from +1.8V to +5.5V
`Rail-to-Rail® Signal Handling


Application

·Battery-Operated Equipment
·Audio/Video-Signal Routing
·Low-Voltage Data-Acquisition Systems
·Sample-and-Hold Circuits
·Communications Circuits


Pinout




Specifications

(All Voltages Referenced to GND, Unless Otherwise Noted.)
V+, IN_......................................................................-0.3V to +6.0V
COM_, NO_, NC_ (Note 1) ................................-0.3V to (V+ + 0.3V)
Continuous Current COM_, NO_, NC_ ................................±100mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle).........................................±200mA
Continuous Power Dissipation (T_A = +70)
8-Pin µMAX (derate 4.5mW/ above +70) ........................362mW
9-Bump UCSP (derate 4.7mW/°C above +70)...................379mW
ESD Method 3015.7...................................................................>2kV
Operating Temperature Range ...................................-40 to +85
Junction Temperature.............................................................+150
Storage Temperature Range ....................................-65 to +150
Lead Temperature (soldering, 10s) .......................................+300
Bump Temperature (soldering) (Note 2)
Infrared (15s) ........................................................................+220
Vapor Phase (60s) ..................................................................+215


Description

The MAX4721/MAX4722/MAX4723 low-voltage, low onresistance (RON), dual single-pole/single throw (SPST) analog switches operate from a single +1.8V to +5.5V supply. These devices are designed for USB 1.1 and audio switching applications.

The MAX4721/MAX4722/MAX4723 feature 4.5Ω RON (max) with 1.2Ω flatness and 0.3Ω matching between channels. These new switches feature guaranteed operation from +1.8V to +5.5V and are fully specified at 3V and 5V. These switches offer break-before-make switching (1ns) with tON <80ns and tOFF <40ns at +2.7V. The digital logic inputs are +1.8V logic compatible with a +2.7V to +3.6V supply.

The MAX4721 is packaged in a chip-scale package (UCSP™), significantly reducing the required PC board area. The chip occupies only a 1.52mm X 1.52mm area and has a 3 X 3 bump array with a bump pitch of 0.5mm. These switches are also available in an 8-pin µMAX package.