FSA1256 [FAIRCHILD]
Low RON Low Voltage Dual SPST Analog Switch; 低辛烷值低电压双通道SPST模拟开关
| 型号： | FSA1256 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Low RON Low Voltage Dual SPST Analog Switch |
| 文件： | 总9页 (文件大小：595K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
March 2004
Revised January 2005
FSA1256 • FSA1257 • FSA1258
Low R Low Voltage Dual SPST Analog Switch
ON
General Description
The FSA1256, FSA1257, and FSA1258 are high perfor-
mance dual Single Pole/Single Throw (SPST) analog
switches. These devices feature ultra low RON of 1.1Ω
Features
■ Maximum 1.1Ω On Resistance (RON) for 4.5V supply
■ 0.4Ω max RON flatness for 4.5V supply
■ Space saving Pb-Free MicroPak packaging
■ Broad VCC operating range: 1.65V to 5.5V
maximum at 4.5V VCC and will operate over the wide VCC
range of 1.65V to 5.5V. These devices are fabricated with
sub-micron CMOS technology to achieve fast switching
speeds and are designed for break-before-make operation.
The select input is TTL level compatible. The FSA1256 fea-
tures two Normally Open (NO) switches. The FSA1257
features two Normally Closed (NC) switches. The
FSA1258 has one NO switch and one NC switch.
■ Fast turn-on and turn-off time
■ FSA1258 features break-before-make enable circuitry
■ Over-voltage tolerant TTL compatible control input
Ordering Code:
Product
Order
Number
Package
Code
Package Description
Supplied As
Number Top Mark
FSA1256L8X
FSA1257L8X
FSA1258L8X
MAC08A
MAC08A
MAC08A
EB
EC
ED
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
5K Units on Tape and Reel
5K Units on Tape and Reel
5K Units on Tape and Reel
Pb-Free package per JEDEC J-STD-020B.
Analog Symbols
FSA1256
FSA1257
(Top Through View)
(Top Through View)
FSA1257
Truth Tables
FSA1256
Control Input(s)
Function
Disconnect
Control Input(s)
Function
L
L
A Connected to B
Disconnect
H
A Connected to B
H
H = HIGH Logic Level
L = LOW Logic Level
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation
DS500883
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Analog Symbol
FSA1258
(Top Through View)
FSA1258
Truth Table
Control Input 1S
Function
Control Input 2S
Function
Disconnect
L
1A Connected to 1B
Disconnect
L
H
H
2A Connected to 2B
H = HIGH Logic Level
L = LOW Logic Level
Pin Descriptions
Pin Names
Function
A, B
S
Data Ports
Control Input
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2
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions
Supply Voltage (VCC
)
−0.5V to +6.0V
−0.5V to VCC + 0.5V
−0.5V to +6.0V
−50 mA
Switch Voltage (VS) (Note 2)
Input Voltage (VIN) (Note 2)
Input Diode Current
Supply Voltage (VCC
Control Input Voltage (VIN) (Note 3)
Switch Input Voltage (VIN
)
1.65V to 5.5V
0V to VCC
)
0V to VCC
Switch Current
200 mA
Operating Temperature (TA)
Thermal Resistance (θJA) in still air
MicroPak 8L package
−40°C to +85°C
Peak Switch Current (Pulsed at
1 ms duration, <10% Duty Cycle)
Power Dissipation @ 85°C
MicroPak 8L package
400 mA
224°C/W
(modeled)
180 mW
−65°C to +150°C
+150°C
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Storage Temperature Range (TSTG
)
Maximum Junction Temperature (TJ)
Lead Temperature (TL)
Soldering, 10 seconds
ESD
+260°C
Note 2: The input and output negative voltage ratings may be exceeded if
the input and output diode current ratings are observed.
Human Body Model
5.5kV
Note 3: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics (All typical values are @ 25°C unless otherwise specified)
VCC
T
A = +25°C
TA= −40°C to +85°C
Symbol
VIH
Parameter
Units
Conditions
(V)
Min
Typ
Max
Min
2.0
2.4
Max
Input Voltage High
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
V
VIL
Input Voltage Low
0.6
0.8
1.0
1.0
V
IIN
Control Input Leakage
OFF-Leakage Current
−1.0
−1.0
µA
nA
Ω
VIN = 0V to VCC
INO(OFF)
INC(OFF)
RON
,
A = 1V, 4.5V
1B or 2B = 1V, 4.5V
5.5
-2.0
2.0
4.0
−20.0
20.0
Switch On Resistance
(Note 4)
2.7
4.5
2.6
4.3
1.3
I
I
OUT = 100 mA, 1B or 2B = 1.5V
OUT = 100 mA, 1B or 2B = 3.5V
0.95 1.18
0.06 0.12
1.4
∆RON
On Resistance Matching
Between Channels
(Note 5)
4.5
0.15
Ω
I
OUT = 100 mA, 1B or 2B = 3.5V
RFLAT(ON) On Resistance Flatness
(Note 6)
2.7
4.5
3.6
5.5
I
OUT = 100 mA, 1B or 2B = 0V, 0.75V, 1.5V
OUT = 100 mA, 1B or 2B = 0V, 1V, 2V
Ω
0.2
0.1
0.1
0.3
0.5
0.5
0.4
1.0
1.0
I
ICC
Quiescent Supply Current
µA
VIN = 0V or VCC, IOUT = 0V
Note 4: On Resistance is determined by the voltage drop between A and B pins at the indicated current through the switch.
Note 5: ∆RON = RONmax − RONmin measured at identical VCC, temperature, and voltage.
Note 6: Flatness is defined as the difference between the maximum and minimum value of On Resistance over the specified range of conditions.
3
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AC Electrical Characteristics (All typical value are @ 25°C unless otherwise specified)
VCC
T
A = +25°C
TA= −40°C to +85°C
Figure
Symbol
Parameter
Units
Conditions
(V)
Min
Typ Max
15.0 50.0
10.0 35.0
Min
Max
60.0
40.0
30.0
20.0
Number
tON
Turn ON Time
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
1B or 2B = 1.5V, RL = 50Ω, CL = 35 pF
1B or 2B = 3.0V, RL = 50Ω, CL = 35 pF
1B or 2B = 1.5V, RL = 50Ω, CL = 35 pF
1B or 2B = 3.0V, RL = 50Ω, CL = 35 pF
1B or 2B = 1.5V, RL = 50Ω, CL = 35 pF
1B or 2B = 3.0V, RL = 50Ω, CL = 35 pF
ns
Figure 1
Figure 1
Figure 2
Figure 4
Figure 3
Figure 6
Figure 7
Figure 8
tOFF
tB-M
Q
Turn OFF Time
4.0
8.0
20.0
15.0
ns
Break-Before-Make 2.7 to 3.6
12.0
7.0
ns
Time
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
Charge Injection
10.0
20.0
−70.0
−70.0
−100
−100
300
C
L = 1.0 nF, VGEN = 0V,
GEN = 0Ω
pC
dB
R
OIRR
Xtalk
BW
OFF-Isolation
Crosstalk
f = 1MHz, RL = 50Ω
f = 1MHz, RL = 50Ω
dB
−3db Bandwidth
MHz
%
RL = 50Ω
300
THD
Total Harmonic
Distortion
0.002
0.002
R
L = 600Ω, VIN = 0.5V P.P,
f = 20Hz to 20kHz
Capacitance
VCC
T
A = +25°C
T
A = 40°C to +85°C
Min Max
Symbol
Parameter
Units
Conditions
(V)
0.0
4.5
4.5
Min
Typ
3.0
Max
CIN
Control Pin Input Capacitance
B Port OFF Capacitance
A Port ON Capacitance
pF
pF
pF
f = 1MHz (see Figure 6)
f = 1MHz (see Figure 6)
f = 1MHz (see Figure 6)
COFF
CON
11.5
27.0
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4
AC Loading and Waveforms
Logic Input Waveforms Inverted
for Switches that have the Opposite Logic Sense
C
L includes Fixture and Stray Capacitance
FIGURE 1. Turn-On/Turn-Off Timing
FIGURE 2. Break-Before-Make Timing
FIGURE 3. OFF Isolation
5
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AC Loading and Waveforms (Continued)
Q = (∆VOUT)(CL)
FIGURE 4. Charge Injection
FIGURE 5. Crosstalk
FIGURE 6. ON/OFF Capacitance Measurement Setup
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6
AC Loading and Waveforms (Continued)
FIGURE 7. Bandwidth
FIGURE 8. Harmonic Distortion
7
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Tape and Reel Specification
Tape Format For Micropak
Package
Tape
Section
Number
Cavities
125 (typ)
5000
Cavity
Status
Empty
Filled
Cover Tape
Status
Designator
Leader (Start End)
Carrier
Sealed
L8X
Sealed
Trailer (Hub End)
75 (typ)
Empty
Sealed
REEL DIMENSIONS inches (millimeters)
Tape
Size
A
B
C
D
N
W1
W2
W3
7.0
0.059
0.512
0.795
2.165 0.331 + 0.059/−0.000
0.567
W1 + 0.078/−0.039
(W1 + 2.00/−1.00)
8 mm
(177.8) (1.50) (13.00) (20.20) (55.00) (8.40 + 1.50/−0.00)
(14.40)
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8
Physical Dimensions inches (millimeters) unless otherwise noted
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
Package Number MAC08A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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9
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