UM4258Q
4.5Ω 300MHz Bandwidth Dual SPDT Analog Switch
UM4258Q
QFN10 1.80×1.40
General Description
The UM4258Q low-voltage, low on-resistance (R
ON
), dual single-pole/double-throw (SPDT)
analog switch operates from a single +1.8V to +5.5V supply. The device is designed for USB
1.1/2.0 and audio switching applications.
The UM4258Q features two 4.5Ω R
ON
(max) SPDT switches with 1.2Ω flatness and 0.3Ω
matching between channels. The switch offers break-before-make switching (1ns) with t
ON
< 80ns
and t
OFF
< 40ns at +2.7V. The digital logic inputs are +1.8V logic compatible with a +2.7V to
+3.6V supply.
The UM4258Q is packaged in a 1.80mm ×1.40mm QFN10 package, which significantly reducing
the required PC board area.
Applications
USB 1.1/2.0 Signal Switching Circuits
Battery-Operated Equipment
Audio/Video-Signal Routing
Headphone Switching
Low-Voltage Data-Acquisition
Systems
Sample-and-Hold Circuits
Cell Phones
PDAs
Features
2ns (max) Differential Skew
-3dB Bandwidth: 300MHz
Low 15pF On-Channel Capacitance
Single-Supply Operation from +1.8V to
+5.5V
4.5Ω R
ON
(max) Switches
0.3Ω (max) R
ON
Match (+3.0V Supply)
1.2Ω (max) Flatness (+3.0V Supply)
Rail-to-Rail Signal Handling
High Off-Isolation: -55dB (10MHz)
Low Crosstalk: -80dB (10MHz)
Low Distortion: 0.03%
+1.8V CMOS-Logic Compatible
< 0.5nA Leakage Current at +25°C
Pin Configurations
Top View
NO1
2
COM1
IN1
NC1
3
4
5
6
GND
V+
1
10
9
8
7
NC2
NO2
COM2
IN2
M: Month Code
UM4258Q
QFN10 1.80×1.40
________________________________________________________________________
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UM4258Q
Pin Description
Pin
UM4258Q
7
8
9
10
6
1
5
4
3
2
Name
NC2
IN2
COM2
NO2
GND
V
+
NC1
IN1
COM1
NO1
Function
Analog Switch 2-Normally Closed Terminal
Analog Switch 2-Digital Control Input
Analog Switch 2 –Common Terminal
Analog Switch 2-Normally Open Terminal
Ground Connection
Positive Supply Voltage
Analog Switch 1-Normally Closed Terminal
Analog Switch 1-Digital Control Input
Analog Switch 1 –Common Terminal
Analog Switch 1-Normally Open Terminal
Ordering Information
Part Number
UM4258Q
Packaging Type
QFN10 1.80×1.40
Marking Code
AN
Shipping Qty
3000pcs/7 Inch Tape & Reel
Function Table
IN_
0
1
NO_
OFF
ON
NC_
ON
OFF
Absolute Maximum Ratings
Limit
Supply Voltage
- 0.3 to + 6.0
DC Switch Voltage (Note1)
- 0.3 to (V
+
+ 0.3)
DC IN Voltage
- 0.3 to + 6.0
Continuous Current (COM_, NO_, NC_)
±100
Peak Current (Pulsed at 1ms, 10% duty cycle)
±200
Operating Temperature Range
- 40 to +85
Junction Temperature
+150
Storage Temperature Range
- 65 to +150
Junction Lead Temperature (Soldering, 10seconds)
+300
Infrared (15s)
+220
Bump Temperature
T
Bump
(Soldering)
Vapor Phase (60s)
+215
P
D
Continuous Power Dissipation @ +70°C
909
ESD
ESD Method 3015.7
＞2000
Note1: Signals on COM_, NO_, or NC_ exceeding V
+
or GND are clamped by internal
Limit forward-diode current to maximum current rating.
Symbol
V
+
V
S
IN_
Io
Ip
T
O
T
J
T
STG
T
L
Parameter
Unit
V
mA
°C
mW
V
diodes.
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UM4258Q
DC Electrical Characteristics (Single +3V Supply)
(V
+
= +2.7V to +3.6V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
=T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at V
+
= +3.0V, T
A
=+25°C) (Notes 2,3)
Limits (–40 to 85 °C)
Symbol
Parameter
Test Conditions
Temp
Min
DC Electrical Characteristics
V
COM_
V
NO_
V
NC_
V
+
I
+
I
COM_(ON)
I
OFF
V
IH
V
IL
I
IN
Analog Signal Range
Power Supply Range
Supply Current
COM_On Leakage Current
(Note7)
OFF State Leakage Current
(Note7)
Input High Voltage
Input Low Voltage
Input Leakage Current
V
+
=+3.6V, V
IN_
=0 or 5.5V
V
+
= +2.7V, I
COM_
=10mA;
V
NO_
or V
NC_
= 1.5V
V
+
= +2.7V, I
COM_
=10mA;
V
NO_
or V
NC_
= 1.5V
V
+
= +2.7V, I
COM_
=10mA;
V
NO_
or V
NC_
= 1.0V, 1.5V, 2.0V
V
+
=+5.5V, V
IN_
=0V or V
+
V
+
= +3.6V, V
COM_
=0.3V, 3.3V;
V
NO_
or V
NC_
= 0.3V, 3.3V, or
floating
V
+
= +3.6V, V
COM_
=0.3V, 3.3V;
V
NO_
or V
NC_
= 3.3V, 0.3V
Full
Full
Full
Room
Full
Room
Full
Full
Full
Full
Room
Full
Room
Full
Room
Full
0.6
0.1
-100
3.0
-1
-2
-0.5
-1
1.4
0.5
+100
4.5
5
0.3
0.4
1.2
1.5
Ω
Ω
+0.01
+0.01
0
1.8
V
+
5.5
1
+1
+2
+0.5
+1
V
V
μA
nA
nA
V
V
nA
Ω
Typ
Max
Unit
R
ON
On-Resistance (Note4)
On Resistance Match
Between Channels
(Notes 4,5)
On Resistance Flatness
(Note6)
ΔR
ON
R
FLAT
________________________________________________________________________
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UM4258Q
AC Electrical Characteristics (Single +3V Supply)
(V
+
= +2.7V to +3.6V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
=T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at V
+
= +3.0V, T
A
=+25°C) (Notes 2,3)
Limits (–40 to 85 °C)
Symbol
Parameter
Test Conditions
Temp
Min
AC Electrical Characteristics
t
ON
t
OFF
t
BBM
t
SKEW
Q
INJ
Turn-On Time
Turn-Off Time
Break Before Make Time
(Note7)
Skew (Note7)
Charge Injection
V
NO_
, V
NC_
=1.5V;
R
L
=300Ω, C
L
=35pF, Figure1;
V
IH
=1.5V, V
IL
=0V
V
NO_
, V
NC_
=1.5V;
R
L
=300Ω, C
L
=35pF, Figure1;
V
IH
=1.5V, V
IL
=0V
V
NO_
, V
NC_
=1.5V;
R
L
=300Ω, C
L
=35pF, Figure2
R
S
=39Ω, C
L
=50pF, Figure3
C
L
= 1.0 nF, Figure 4
V
GEN
= 1.5V, R
GEN
= 0Ω
f = 10 MHz; V
NO_
, V
NC_
=1V
P-P
;
R
L
=50Ω, C
L
=5pF, Figure5
f = 1 MHz; V
NO_
, V
NC_
=1V
P-P
;
R
L
=50Ω, C
L
=5pF, Figure5
f = 10 MHz; V
NO_
, V
NC_
=1V
P-P
;
R
L
=50Ω, C
L
=5pF, Figure5
f = 1 MHz; V
NO_
, V
NC_
=1V
P-P
;
R
L
=50Ω, C
L
=5pF, Figure5
Signal=0dBm, R
L
=50Ω,
C
L
=5pF, Figure5
R
L
=600Ω
V
COM_
=2V
P-P
Room
Full
Room
Full
Room
Full
Full
Room
1
0.15
5
-55
Room
-80
-80
Room
-110
Room
Room
300
0.03
MHz
%
dB
dB
2
40
20
8
80
100
40
50
ns
ns
ns
ns
pC
Typ
Max
Unit
V
ISO
Off Isolation
V
CT
Crosstalk (Note8)
BW
THD
Capacitance
C
NO_(OFF)
C
NC_(OFF)
C
(ON)
-3 dB Bandwidth
Total Harmonic Distortion
NO_, NC_ Off
Capacitance
Switch On Capacitance
f=1MHz, Figure 6
f=1MHz, Figure 6
Room
Room
9
15
pF
pF
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UM4258Q
DC Electrical Characteristics (Single +5V Supply)
(V
+
= +4.2V to +5.5V, V
IH
= +2.0V, V
IL
= +0.8V, T
A
=T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at V
+
= +5.0V, T
A
=+25°C) (Notes 2,3)
Limits (–40 to 85 °C)
Symbol
Parameter
Test Conditions
Temp
Min
DC Electrical Characteristics
V
COM_
V
NO_
V
NC_
V
+
I
+
I
COM_(ON)
I
OFF
V
IH
V
IL
I
IN
Analog Signal Range
Power Supply Range
Supply Current
COM_On Leakage Current
(Note7)
OFF State Leakage Current
(Note7)
Input High Voltage
Input Low Voltage
Input Leakage Current
V
+
=+5.5V, V
IN_
=0 or V
+
V
+
= +4.2V, I
COM_
=10mA;
V
NO_
or V
NC_
= 3.5V
V
+
= +4.2V, I
COM_
=10mA;
V
NO_
or V
NC_
= 3.5V
V
+
= +4.2V, I
COM_
=10mA;
V
NO_
or V
NC_
= 1.0V, 2.0V, 3.5V
V
+
=+5.5V, V
IN_
=0V or V
+
V
+
= +5.5V, V
COM_
=1.0V, 4.5V;
V
NO_
or V
NC_
= 1.0V, 4.5V, or
floating
V
+
= +5.5V, V
COM_
=1.0V, 4.5V;
V
NO_
or V
NC_
= 1.0V, 4.5V
Full
Full
Full
Room
Full
Room
Full
Full
Full
Full
Room
Full
Room
Full
Room
Full
0.4
0.1
-100
1.7
-1
-2
-0.5
-1
2.0
0.8
+100
3
3.5
0.3
0.4
1.2
1.5
Ω
Ω
+0.01
+0.01
0
1.8
V
+
5.5
1
+1
+2
+0.5
+1
V
V
μA
nA
nA
V
V
nA
Ω
Typ
Max
Unit
R
ON
On-Resistance (Note4)
On Resistance Match
Between Channels
(Notes 4,5)
On Resistance Flatness
(Note6)
ΔR
ON
R
FLAT
________________________________________________________________________
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