Datasheet

MAX4719
20 Ω , 300MHz Bandwidth, Dual SPDT Analog
Switch in UCSP
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Detailed Description
The MAX4719 high-speed, low-voltage, 20Ω R
ON
, dual
SPDT analog switch operates from a single +1.8V to
+5.5V supply. The switch features break-before-make
switching operation and fast switching speeds (t
ON
=
80ns (max), t
OFF
= 40ns (max)).
Applications Information
Digital Control Inputs
The MAX4719 logic inputs accept up to +5.5V regard-
less of supply voltage. For example, with a +3.3V sup-
ply, IN_ can be driven low to GND and high to +5.5V
allowing for mixing of logic levels in a system. Driving
the control logic inputs rail-to-rail minimizes power con-
sumption. For a +3V supply voltage, the logic thresh-
olds are 0.5V (low) and 1.4V (high); for a +5V supply
voltage, the logic thresholds are 0.8V (low) and 2.0V
(high).
Analog Signal Levels
The on-resistance of the MAX4719 changes very little for
analog input signals across the entire supply voltage
range (see the Typical Operating Characteristics). The
switches are bidirectional, so the NO_, NC_, and COM_
pins can be either inputs or outputs.
PIN
UCSP µMAX
NAME FUNCTION
A1 7 NC2
Analog Switch 2—Normally Closed
Terminal
A2 8 IN2
Digital Control Input for Analog
Switch 2
A3 9 COM2
Analog Switch 2—Common
Terminal
A4 10 NO2
Analog Switch 2—Normally Open
Terminal
B1 6 GND Ground
B4 1 V+ Positive-Supply Voltage Input
C1 5 NC1
Analog Switch 1—Normally Closed
Terminal
C2 4 IN1
Digital Control Input for Analog
Switch 1
C3 3 COM1
Analog Switch 1—Common
Terminal
C4 2 NO1
Analog Switch 1—Normally Open
Terminal
Pin Description
TURN-ON/OFF TIME
vs. TEMPERATURE
MAX4719 toc11
TEMPERATURE (°C)
t
ON
/t
OFF
(ns)
603510-15
10
20
40
30
50
60
0
-40 85
t
ON
, V+ = 3.0V t
ON
, V+ = 5.0V
t
OFF
, V+ = 5.0V
t
OFF
, V+ = 3.0V
FREQUENCY RESPONSE
MAX4719 toc12
FREQUENCY (MHz)
ON-LOSS (dB)
10.01
-120
-100
-80
-60
-40
-20
0
20
-140
0.0001 100
V+ = 3V/5V
ON-LOSS
OFF-ISOLATION
CROSSTALK
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4719 toc13
FREQUENCY (Hz)
THD (%)
10k1k100
0.1
10 100k
1
0.01
V+ = 3V
R
L
= 600Ω