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FSA4157 Low Voltage 1 SPDT Analog Switch
August 2003 Revised June 2004
FSA4157 Low Voltage 1 SPDT Analog Switch
General Description
FSA4157 is a high performance Single Pole/Double Throw (SPDT) analog switch. The device features ultra low RON of 1.15 maximum at 4.5V VCC and will operate over the wide VCC range of 1.65V to 5.5V. The device is fabricated with sub-micron CMOS technology to achieve fast switching speeds and is designed for break-before-make operation. The select input is TTL level compatible.
Features
s Smallest low ohmic analog switch s Maximum 1.15 On Resistance (RON) at 4.5V VCC s 0.3 max RON flatness at 4.5V VCC s Space saving MicroPak and SC70 6-lead surface mount packages s Broad VCC operating range: 1.65V to 5.5V s Fast turn-on and turn-off time s Break-before-make enable circuitry s Over-voltage tolerant TTL compatible control circuitry
Ordering Code:
Order Number FSA4157P6 FSA4157P6X FSA4157L6X Package Number MAA06A MAA06A MAC06A Product Code Top Mark A57 A57 EG Package Description Supplied As
6-Lead SC70, EIAJ SC88, 1.25mm Wide 250 Units on Tape and Reel 6-Lead SC70, EIAJ SC88, 1.25mm Wide 3k Units on Tape and Reel 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel
Analog Symbols
Pin Assignment for SC70
Truth Table
Control Input (S) L H
H = HIGH Logic Level L = LOW Logic Level
Function B0 Connected to A B1 Connected to A
Pin Descriptions
Pin Name A, B0, B1 S (Top View) Pin Assignment for MicroPak Description Data Ports Control Input
(Top Through View)
MicroPak is a trademark of Fairchild Semiconductor Corporation.
(c) 2004 Fairchild Semiconductor Corporation
DS500841
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FSA4157
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Switch Voltage (Note 2) DC Input Voltage (VIN) (Note 2) DC Input Diode Current Switch Current Peak Switch Current (Pulse at 1 mS duration,
-0.5V to +6.0V -0.5V to VCC +0.5V -0.5V to +6.0V -50 mA
200 mA
Recommended Operating Conditions (Note 3)
Supply Voltage (VCC) Control Input Voltage Switch Input Voltage Operating Temperature Thermal Resistance JA in still air SC70 6L Package 350C/W 330C/W (estimated) 1.65V to 5.5V 0V to VCC 0V to VCC
-40C to 85C
<10% Duty Cycle)
Power Dissipation (PD) @ 85C SC70 6L Package MicroPak 6L Package Storage Temperature Range (TSTG) Maximum Junction Temperature (TJ) Lead Temperature (TL) (Soldering, 10 seconds) ESD (Human Body Model)
400 mA 180 mW 180 mW
MicroPak 6L Package
-65C to +150C +150C +260C
7500V
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 rating. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: The input and output negative ratings may be exceeded if the input and output diode current ratings are observed. Note 3: Control input must be held HIGH or LOW and it must not float.
DC Electrical Characteristics (all typical values are at 25C unless otherwise specified)
Symbol VIH VIL IIN INO(OFF), INC(OFF) IA(ON) RON RON Parameter Input Voltage High Input Voltage Low Control Input Leakage OFF Leakage Current of Port B0 and B1 ON Leakage Current of Port A Switch ON Resistance (Note 4) On Resistance Matching Between Channels (Note 5) RFLAT(ON) On Resistance Flatness (Note 6) 4.5 ICC Quiescent Supply Current 3.6 5.5 0.2 0.1 0.1 0.3 0.5 0.5 0.4 1.0 1.0 A VCC (V) 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 5.5 5.5 2.7 4.5 4.5 2.7 -2.0 -4.0 2.6 0.95 0.06 1.4 2.0 4.0 4.0 1.15 0.12 -1.0 -1.0 -20.0 -40.0 Min TA = +25 C Typ Max TA = -40C to +85C Min 2.0 2.4 0.6 0.8 1.0 1.0 20.0 40.0 4.3 1.3 0.15 Max Units V V A nA nA VIN = 0V to VCC A = 1V, 4.5V B0 or B1 = 4.5V, 1V A = 1V, 4.5V B0 or B1 = 1V, 4.5V or Floating IOUT = 100mA, B0 or B1 = 1.5V IOUT = 100mA, B0 or B1 = 3.5V IOUT = 100mA, B0 or B1 = 1.5V IOUT = 100mA, B0 or B1 = 0V, 0.75V,1.5V IOUT = 100mA, B0 or B1 = 0V, 1V, 2V VIN = 0V or VCC, IOUT = 0V Conditions
Note 4: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the voltage on the two (A or B Ports). Note 5: RON = RON max - RON min 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.
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FSA4157
AC Electrical Characteristics (all typical value are at 25C unless otherwise specified)
Symbol tON tOFF tB-M Q OIRR Xtalk BW THD Parameter Turn ON Time Turn OFF Time Break Before Make Time Charge Injection OFF- Isolation Crosstalk VCC (V) 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 2.7 to 3.6 4.5 to 5.5 -3db Bandwidth 2.7 to 3.6 4.5 to 5.5 Total Harmonic Distortion 2.7 to 3.6 4.5 to 5.5 20.0 10.0 20.0 -70.0 -70.0 -70.0 -70.0 350 350 0.002 0.002 Min TA = +25 C Typ Max 50.0 35.0 20.0 15.0 TA = -40C to +85C Min Max 60.0 40.0 30.0 20.0 Units ns ns ns pC dB dB CL = 1.0nF, VGE = 0V, RGEN = 0 f = 1MHz, RL = 50 f = 1MHz, RL = 50 Conditions B0 or B 1 = 1.5V, RL = 50, CL = 35 pF B0 or B1 = 3V, RL = 50, CL = 35 pF B0 or B 1 = 1.5V, RL = 50, CL = 35 pF B0 or B1 = 3V, RL = 50, CL = 35 pF Figure Number Figure 1 Figure 1 Figure 2 Figure 4 Figure 3 Figure 3 Figure 6 Figure 7
MHz RL = 50 % RL = 600, VIN = 0.5V P.P, f = 20 Hz to 20 k Hz
Capacitance
Symbol CIN COFF CON Parameter Control Pin Input Capacitance B Port OFF Capacitance On Capacitance VCC (V) 0 4.5 4.5 Min TA = +25C Typ 3.5 12.0 55.0 Max TA = 40C to +85C Min Max pF pF pF f = 1MHz f = 1MHz f = 1MHz Units Conditions Figure Number Figure 5 Figure 5 Figure 5
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FSA4157
AC Loading and Waveforms
CL Includes Fixture and Stray Capacitance
Logic Input Waveforms Inverted for Switches that have the Opposite Logic Sense
FIGURE 1. Turn ON/OFF Timing
CL Includes Fixture and Stray Capacitance FIGURE 2. Break Before Make Timing
FIGURE 3. OFF Isolation and Crosstalk
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FSA4157
AC Loading and Waveforms
(Continued)
FIGURE 4. Charge Injection
FIGURE 5. ON/OFF Capacitance Measurement Setup
FIGURE 6. Bandwidth
FIGURE 7. Harmonic Distortion
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FSA4157
Tape and Reel Specification
Tape Format For Micropak 6 Package Designator L6X Tape Section Leader (Start End) Carrier Trailer (Hub End) Number Cavities 125 (typ) 5000 75 (typ) Cavity Status Empty Filled Empty Cover Tape Status Sealed Sealed Sealed
REEL DIMENSIONS inches (millimeters)
Tape Size 8 mm
A 7.0 (177.8)
B 0.059 (1.50)
C 0.512 (13.00)
D 0.795 (20.20)
N 2.165 (55.00)
W1 0.331 + 0.059/-0.000 (8.40 + 1.50/-0.00)
W2 0.567 (14.40)
W3 W1 + 0.078/-0.039 (W1 + 2.00/-1.00)
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FSA4157
Physical Dimensions inches (millimeters) unless otherwise noted
6-Lead SC70, EIAJ SC88, 1.25mm Wide Package Number MAA06A
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FSA4157 Low Voltage 1 SPDT Analog Switch
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
6-Lead MicroPak, 1.0mm Wide Package Number MAC06A
Technology Description
The Fairchild Switch family derives from and embodies Fairchild's proven switch technology used for several years in its 74LVX3L384 (FST3384) bus switch product.
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 reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 8 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com

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