RS2257
Ultra Low ON-Resistance,
Low Voltage, SPDT Analog Switch
FEATURES
DESCRIPTION
•
-3dB Bandwidth: 30MHz
•
High Speed, Typically 50ns
•
Supply Range: +1.8V to +5.5V
•
Low ON-State Resistance, 0.6Ω(TYP)
•
Break-Before-Make Switching
•
Rail-to-Rail Operation
The RS2257 device can handle both analog and digital
signals. It features fast switching speeds (50ns) and
•
TTL/CMOS Compatible
low on-resistance (0.6Ω TYP).
•
Extended Industrial Temperature
Range: -40°C to +125°C
•
MicroSIZE
PACKAGES: SOT363 (SC70-6),
SOT23-6
The RS2257 is a single-pole double-throw (SPDT)
analog switch that is designed to operate from
1.8 V to 5.5 V.
Applications include signal gating, chopping,
modulation or demodulation (modem), and signal
multiplexing for analog-to-digital and digital-to-analog
conversion systems.
APPLICATIONS
•
Wearable Devices
•
Battery-Operated Equipment
•
Signal Gating, Chopping, Modulation or
Demodulation (Modem)
•
Portable Computing
•
Cell Phones
PIN CONFIGURATIONS
RS2257
FUNCTION TABLE
LOGIC
0
1
NO
OFF
ON
NC
ON
OFF
PIN
NO
GND
NC
COM
V+
IN
1
2
3
4
5
6
RevC.1
1
6
IN
GND
2
5
V+
NC
3
4
COM
SOT23-6/
SOT363(SC70-6)
PIN DESCRIPTION
NAME
NO
FUNCTION
Normally-Open Terminal
Ground
Normally-Closed Terminal
Common Terminal
Power Supply
Digital Control Pin
1
www.run-ic.com
RS2257
ABSOLUTE MAXIMUM RATINGS (1)
V+, IN to GND..................................................-0.3V to 7.0V
Analog, Digital Voltage Range (2) …......– 0.3 to (V+) + 0.3V
Continuous Current NO, NC, or COM……......…... ±500mA
Peak Current NO, NC, or COM……........…..... . ... ±800mA
Storage Temperature ……….…………… −65°C to +150°C
Operating Temperature ……….…….…… −40°C to +125°C
Junction Temperature................................................150°C
Package Thermal Resistance @ TA = +25°C
SOT23-5, SOT23-6………………….………………200°C/W
MSOP-10, SOIC-8 ,TSSOP-8……….………….... 150°C/W
SOIC-14, TSSOP-14………….……….……………100°C/W
Lead Temperature (Soldering, 10s) ……………........260°C
ESD Susceptibility
HBM …......................................................................1000V
MM ……………………….........………………...……….100V
ESD SENSITIVITY CAUTION
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.
(1) Stresses above these ratings may cause permanent damage. Exposure
to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those
specified is not implied.
(2) Input terminals are diode-clamped to the power-supply rails. Input
signals that can swing more than 0.3V beyond the supply rails should
be current-limited to 10mA or less.
PACKAGE/ORDERING INFORMATION
PRODUCT
ORDERING NUMBER
RS2257
TEMPERATURE
PACKAGE
PACKAGE
RANGE
LEAD
MARKING
RS2257XC6
-40℃~125℃
RS2257XH
-40℃~125℃
SOT363
(SC70-6)
SOT23-6
PACKAGE OPTION
2257X
Tape and Reel,3000
2257
Tape and Reel,3000
NOTE: X = Date Code
MARKING INFORMATION
2257 X
Date code
Product name
2
www.run-ic.com
RS2257
ELECTRICAL CHARACTERISTICS
V+ = 5.0 V, TA= –40°C to 125°C (unless otherwise noted)
PARAMETER
SYMBOL
CONDITIONS
V+
TA
MIN
FULL
0
TYP
MAX UNITS
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match
Between Channels
On-Resistance Flatness
VNO, VNC, VCOM
RON
∆RON
RFLAT(ON)
0 ≤ (VNO or VNC) ≤V+,
ICOM = -10mA, Switch ON,
See Figure 1
0 ≤ (VNO or VNC) ≤V+,
ICOM = -10mA, Switch ON,
See Figure 1
0 ≤ (VNO or VNC) ≤V+,
ICOM = -10mA, Switch ON,
See Figure 1
NC,NO OFF
Leakage Current
INC(OFF), INO(OFF)
VNO or VNC = 0.3V, V+/2 VCOM =
V+/2, 0.3V See Figure 2
NC,NO,COM ON
Leakage Current
INC(ON), INO(ON), VNO or VNC = 0.3V, Open VCOM =
ICOM(ON)
Open, 0.3V See Figure 2
V+
V
1.0
Ω
1.2
Ω
1.5
Ω
1.7
Ω
0.1
Ω
0.12
Ω
0.1
Ω
0.12
Ω
0.3
Ω
0.4
Ω
0.7
Ω
FULL
0.8
Ω
1.8 to
5.5V
FULL
1
μA
1.8 to
5.5V
FULL
1
μA
5V
FULL
1.5
V
3.3V
FULL
1.3
V
5V
FULL
0.6
V
3.3V
FULL
0.5
V
1.8 to
5.5V
FULL
1
μA
5V
3.3V
5V
3.3V
5V
3.3V
0.6
+25℃
FULL
1.0
+25℃
FULL
0.04
+25℃
FULL
0.04
+25℃
FULL
0.18
+25℃
FULL
0.54
+25℃
DIGITAL CONTROL INPUTS(1)
Input High Voltage
VINH
Input Low Voltage
VINL
Input Leakage Current
IIN
VIN = VIO or 0
(1) All unused digital inputs of the device must be held at VIO or GND to ensure proper device operation.
3
www.run-ic.com
RS2257
ELECTRICAL CHARACTERISTICS (continued)
V+ = 5.0 V, TEMP= –40°C to 125°C (unless otherwise noted)
PARAMETER
SYMBOL
CONDITIONS
V+
5V
3.3V
5V
3.3V
5V
3.3V
TEMP
MIN
TYP
MAX UNITS
DYNAMIC CHARACTERISTICS
Turn-On Time
tON
VCOM = V+, RL = 300Ω, CL = 35pF,
See Figure 5
Turn-Off Time
tOFF
VCOM = V+, RL = 300Ω, CL = 35pF,
See Figure 5
Break-Before-Make
Time Delay
tBBM
VNO1 = VNC1 = VNO2 = VNC2 = 3V,
RL = 300Ω, CL = 35pF,See Figure 6
Off Isolation
OISO
RL = 50Ω, Switch OFF, f = 100KHz
See Figure 8
f = 10KHz
-3dB Bandwidth
NC,NO OFF
Capacitance
NC,NO,COM ON
Capacitance
BW
CNC(OFF),
CNO(OFF)
CNC(ON), CNO(ON),
CCOM(ON)
Switch ON, RL = 50Ω
See Figure 7
VNC or VNO=V+/2 or GND, Switch
OFF See Figure 4
VNC or VNO=V+/2 or GND, Switch
ON See Figure 4
50
50
15
17
10
11
+25℃
+25℃
+25℃
ns
ns
ns
+25℃
-68
dB
+25℃
-86
dB
+25℃
30
MHz
+25℃
80
pF
+25℃
350
pF
POWER REQUIREMENTS
Power Supply Range
V+
Power Supply Current
I+
FULL
VIN = GND or V+
5.5V
4
FULL
1.8
5.5
V
1
μA
www.run-ic.com
RS2257
TYPICAL CHARACTERISTICS
BANDWIDTH
3
3
0
0
Gain(dB)
Gain(dB)
BANDWIDTH
-3
-3
-6
-6
-9
-9
0
1
10
100
0
1
Frequency(MHz) V+=3V
10
100
Frequency(MHz) V+=5V
Typical ron as a Function of Input Voltage (VI ) for VI = 0 to V+
Ron(Ω)
10
1
0.1
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
VI(V)
V+=5.5V
V+=4V
V+=3.3V
5
V+=2.5V
V+=1.8V
www.run-ic.com
RS2257
Parameter Measurement Information
Figure 1.ON-State Resistance (ron)
Figure 2.OFF-State Leakage Current (ICOM(OFF), INO(OFF))
Figure 3.ON-State Leakage Current (ICOM(ON), INO(ON))
6
www.run-ic.com
RS2257
Figure 4.Capacitance (CI, CCOM(OFF), CCOM(ON), CNO(OFF), CNO(ON))
Figure 5.Turn-On (tON) and Turn-Off Time (tOFF)
Figure 6.Break-Before-Make Time (tBBM)
7
www.run-ic.com
RS2257
Figure 7.Bandwidth (BW)
Figure 8.OFF Isolation (OISO)
Figure 9.Crosstalk (XTALK)
8
www.run-ic.com
RS2257
Figure 10.Charge Injection (QC)
Figure11.Total Harmonic Distortion (THD)
9
www.run-ic.com
RS2257
PACKAGE OUTLINE DIMENSIONS
SOT363 (SC70-6)
D
1.30
b
1.9
E
E1
0.75
Pin1
Index Area
0.65
0.4
e
e1
RECOMMENDED LAND PATTERN (Unit: mm)
0.2
A A2
c
θ
L
A1
Symbol
Dimensions In Millimeters
L1
Dimensions In Inches
Min
Max
Min
Max
A
0.900
1.100
0.035
0.043
A1
0.000
0.100
0.000
0.004
A2
0.900
1.000
0.035
0.039
b
0.150
0.350
0.006
0.014
c
0.080
0.150
0.003
0.006
D
2.000
2.200
0.079
0.087
E
1.150
1.350
0.045
0.053
E1
2.150
2.450
0.085
0.096
e
0.650(BSC)
0.026(BSC)
e1
1.300(BSC)
0.051(BSC)
L
0.260
L1
θ
0.460
0.010
0.525
0°
0.018
0.021
8°
10
0°
8°
www.run-ic.com
RS2257
SOT23-6
D
1.90
b
2.59
E
E1
0.99
Pin1
Index Area
0.95
0.69
e
e1
RECOMMENDED LAND PATTERN (Unit: mm)
0.2
A A2
L
A1
Symbol
c
θ
Dimensions In Millimeters
Dimensions In Inches
Min
Max
Min
Max
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
e
0.950(BSC)
0.037(BSC)
e1
1.800
2.000
0.071
0.079
L
0.300
0.600
0.012
0.024
θ
0°
8°
0°
8°
11
www.run-ic.com