SGM2258
4.5Ω, 300MHz, Low-Power
Full-Speed USB (12Mbps) Switch
GENERAL DESCRIPTION
The SGM2258 is a high-performance, dual, single-pole/
double-throw (SPDT) CMOS analog switch designed for
switching USB 1.1 signals. High bandwidth and low
on-resistance make this switch able to pass both USB
low and full-speed signal with minimum signal distortion.
The
SGM2258 features
guaranteed
on-resistance
FEATURES
●
Operation Voltage: +1.8V to +5.5V
●
On-Resistance: 4.5Ω (TYP) at +4.5V
●
High Bandwidth: 300MHz
●
Switching Times:
t
ON
70ns
t
OFF
20ns
●
High Off-Isolation: -51dB at 10MHz
●
Low Crosstalk: -67dB at 10MHz
●
Rail-to-Rail Operation
●
TTL/CMOS Compatible
●
Break-Before-Make Switching
●
Extended Industrial Temperature Range:
-40℃ to +85℃
●
Available in Green TQFN-2.1×1.6-10L Package
matching (0.3Ω TYP) between switches and guaranteed
on-resistance flatness over the signal range (2Ω TYP).
This ensures excellent linearity and low distortion when
switching signals.
The device is fabricated with sub-micron CMOS
technology to achieve fast switching speeds and
designed for break-before-make operation. The select
input is TTL-level compatible.
APPLICATIONS
SGM2258 is available in Green TQFN-2.1×1.6-10L
package. It operates over an ambient temperature range
of -40℃ to +85℃.
Routes Signals for USB 1.1
Portable Instrumentation
Battery-Operated Equipment
Computer Peripherals
Cell Phones
PDAs
MP3s
SG Micro Limited
www.sg-micro.com
REV. A. 1
SGM2258
PACKAGE/ORDERING INFORMATION
MODEL
SGM2258
PIN-
PACKAGE
TQFN-2.1×1.6-10L
SPECIFIED
TEMPERATURE
RANGE
-40℃ to +85℃
4.5Ω, 300MHz, Low-Power
Full-Speed USB (12Mbps) Switch
ORDERING
NUMBER
SGM2258YTQD10/TR
PACKAGE
MARKING
2258
PACKAGE
OPTION
Tape and Reel, 3000
ABSOLUTE MAXIMUM RATINGS
V
+
, IN to GND...................................................... -0.3V to 6V
(1)
Analog, Digital voltage range ............. -0.3V to (V
+
) + 0.3V
Continuous Current D1, D2, or D……..................... ±100mA
Operating Temperature Range..................... -40℃ to +85℃
Junction Temperature................................................. 150℃
Storage Temperature.....................................-65℃ to +150℃
Lead Temperature (soldering, 10s)............................... 260℃
ESD Susceptibility
MM...................................................................................400V
NOTES:
1. Signals on D1, D2, D or S exceeding V
+
will be clamped by internal diodes. Limit forward diode current to maximum current ratings.
2. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress
ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections
of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause
damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
SGMICRO reserves the right to make any change in circuit design, specification or other related things if necessary without notice at
any time. Please contact SGMICRO sales office to get the last datasheet.
PIN CONFIGURATION
(TOP VIEW)
D1-
9
S1
8
D-
7
D2-
6
FUNCTION TABLE
S
0
1
D2-, D2+
OFF
ON
D1-, D1+
ON
OFF
Switches Shown For Logic “0” Input
GND
10
5
V
+
PIN DESCRIPTION
PIN
NAME
V
+
GND
S1, S2
D-, D+
D2-, D2+
D1-, D1+
FUNCTION
Power Supply
Ground
Select Input
Common Output/Data Port
Data Port (Normally Open)
Data Port (Normally Closed)
1
2
S2
3
D+
4
D2+
D1+
TQFN-2.1×1.6-10L
5
10
8,2
7,3
6,4
9,1
SG Micro Limited
www.sg-micro.com
2
SGM2258
4.5Ω, 300MHz, Low-Power
Full-Speed USB (12Mbps) Switch
ELECTRICAL CHARACTERISTICS
(V
+
= +4.5V to +5.5V, V
IH
= +1.6V, V
IL
= +0.5V, T
A
= -40℃ to +85℃. Typical values are at V
+
= +5.0V, T
A
= +25℃, unless otherwise
noted.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
(D1+, D1-, D2+, D2-)
On-Resistance
On-Resistance Match
Between Channels
On-Resistance Flatness
Source Off Leakage
Current
Channel On Leakage
Current
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Leakage Current
DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make Time
Delay
Charge Injection
Channel On Capacitance
Off Isolation
Channel-to-Channel
Crosstalk
-3dB Bandwidth
POWER REQUIREMENTS
Power Supply Range
Power Supply Current
V
+
I
+
V
+
= 5.5V, V
IN
= 0V or V
+
-40℃ to +85℃
-40℃ to +85℃
1.8
5.5
1
V
µA
t
ON
t
OFF
t
D
Q
C
ON
O
ISO
V
+
= 4.2V, Signal = 0dBm, f = 1MHz
R
L
= 50Ω, Test Circuit 5
f = 10MHz
V
+
= 4.2V, Signal = 0dBm, f = 1MHz
R
L
= 50Ω, Test Circuit 6
f = 10MHz
V
+
= 4.2V, Signal = 0dBm, R
L
= 50Ω,
Test Circuit 7
V
+
= 4.2V, V
IS
= 3.0V,
R
L
= 50Ω, C
L
= 35pF, Test Circuit 2
V
+
= 4.2V, V
IS
= 3.0V,
R
L
= 50Ω, C
L
= 35pF, Test Circuit 3
V
+
= 4.2V, V
G
= GND, R
G
= 0Ω,
C
L
= 1.0nF, Q = C
L
x V
OUT
,
Test Circuit 4
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
70
20
10
6
41
-71
-51
-99
-67
300
ns
ns
ns
pC
pF
dB
dB
dB
dB
MHz
SYMBOL
CONDITIONS
TEMP
MIN
TYP
MAX UNITS
V
IS
R
ON
∆R
ON
R
FLAT(ON)
I
D2(OFF)
, I
D1(OFF)
I
D2(ON)
, I
D1(ON)
V
+
= 4.5V, 0V
≤
V
IS
≤
V
+
,
I
D
= -100mA , Test Circuit 1
V
+
= 4.5V, 0V
≤
V
IS
≤
V
+
,
I
D
= -100mA , Test Circuit 1
V
+
= 4.5V, 0V
≤
V
IS
≤
V
+
,
I
D
= -100mA , Test Circuit 1
V
+
= 5.5V, V
IS
= 3.3V/ 0.3V,
V
D
= 0.3V/ 3.3V
V
+
= 5.5V, V
IS
= 0.3V/ 3.3V,
V
D
= 0.3V/ 3.3V, or floating
-40℃ to +85℃
+25℃
-40℃ to +85℃
+25℃
-40℃ to +85℃
+25℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
0
4.5
0.3
2
V
+
8.5
9.5
0.6
0.8
3.4
3.8
1
1
V
Ω
Ω
Ω
Ω
Ω
Ω
µA
µA
V
INH
V
INL
I
IN
V
+
= 5.5V, V
S
= 0V or 5.5V
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
1.6
0.5
1
V
V
µA
X
TALK
BW
SG Micro Limited
www.sg-micro.com
3
SGM2258
4.5Ω, 300MHz, Low-Power
Full-Speed USB (12Mbps) Switch
ELECTRICAL CHARACTERISTICS
(V
+
= +2.7V to +3.6V, V
IH
= +1.5V, V
IL
= +0.4V, T
A
= -40℃ to +85℃. Typical values are at V
+
= +3.0V, T
A
= +25℃, unless otherwise
noted.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
(D1+, D1-, D2+, D2-)
On-Resistance
On-Resistance Match
Between Channels
On-Resistance Flatness
Source Off Leakage
Current
Channel On Leakage
Current
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Leakage Current
DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make Time
Delay
Charge Injection
Channel On Capacitance
Off Isolation
Channel-to-Channel
Crosstalk
-3dB Bandwidth
t
ON
t
OFF
t
D
Q
C
ON
O
ISO
Signal = 0dBm, R
L
= 50Ω, f = 1MHz
Test Circuit 5
f = 10MHz
Signal = 0dBm, R
L
= 50Ω, f = 1MHz
Test Circuit 6
f = 10MHz
Signal = 0dBm, R
L
= 50Ω,
Test Circuit 7
V
IS
= 1.5V, R
L
= 50Ω,
C
L
= 35pF, Test Circuit 2
V
IS
= 1.5V, R
L
= 50Ω,
C
L
= 35pF, Test Circuit 3
V
G
= GND, R
G
= 0Ω, C
L
= 1.0nF,
Q = C
L
x V
OUT
, Test Circuit 4
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
95
40
12
5
41
-72
-52
-99
-67
300
ns
ns
ns
pC
pF
dB
dB
dB
dB
MHz
SYMBOL
CONDITIONS
TEMP
MIN
TYP
MAX UNITS
V
IS
R
ON
∆R
ON
R
FLAT(ON)
I
D2(OFF)
, I
D1(OFF)
I
D2(ON)
, I
D1(ON)
V
+
= 2.7V, 0V
≤
V
IS
≤
V
+
,
I
D
= -100mA , Test Circuit 1
V
+
= 2.7V, 0V
≤
V
IS
≤
V
+
,
I
D
= -100mA , Test Circuit 1
V
+
=2.7V, 0V
≤
V
IS
≤
V
+
,
I
D
= -100mA , Test Circuit 1
V
+
= 3.6V, V
IS
= 3.3V/ 0.3V,
V
D
= 0.3V/ 3.3V
V
+
= 3.6V, V
D
= 0.3V/ 3.3V,
V
IS
= 0.3V/ 3.3V, or floating
-40℃ to +85℃
+25℃
-40℃ to +85℃
+25℃
-40℃ to +85℃
+25℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
0
7
0.3
7
V
+
13
14
0.85
1.0
9.5
10.3
1
1
V
Ω
Ω
Ω
Ω
Ω
Ω
µA
µA
V
INH
V
INL
I
IN
V
+
= 2.7V, V
S
= 0V or 2.7V
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
1.5
0.4
1
V
V
µA
X
TALK
BW
SG Micro Limited
www.sg-micro.com
4
SGM2258
4.5Ω, 300MHz, Low-Power
Full-Speed USB (12Mbps) Switch
TYPICAL PERFORMANCE CHARACTERISTICS
On Response vs. Frequency
3
0
-3
-6
-9
0.1
1
10
Frequency (MHz)
100
1000
V
+
= +3.0V
T
A
= +25
℃
On Response (dB)
3
V
+
= +4.2V
0
-3
-6
-9
0.1
1
10
Frequency (MHz)
100
1000
T
A
= +25℃
On Response vs. Frequency
On Response (dB)
Response vs. Frequency
20
0
On Response (dB)
-40
-60
-80
-100
-120
-140
0.1
1
10
Frequency (MHz)
100
1000
CROSSTALK
V
+
= +3.0V
T
A
= +25℃
Response vs. Frequency
20
0
On Response (dB)
-20
-40
-60
-80
-100
-120
-140
0.1
1
10
100
Frequency (MHz)
1000
CROSSTALK
V
+
= +4.2V
T
A
= +25℃
OFF-ISOLATION
-20
OFF-ISOLATION
SG Micro Limited
www.sg-micro.com
5
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