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PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Features
* * * * * * * * * * * CMOS Technology for Bus and Analog Applications Low On-Resistance: 0.6 @ 2.7V Wide VCC Range: 1.65V TO 5.5V Rail-to-Rail Signal Range Control Input Overvoltage Tolerance: 5.5V min. High Off Isolation: -53dB Crosstalk Rejection Reduces Signal Distortion: -84dB Break-Before-Make Switching Low THD (0.017% @ VCC = 2.7V) Extended Industrial Temperature Range: -40C to 85C Packaging (Pb-free & Green): - 10-ball CSP
Description
Pericom Semiconductor's PI5A4764 is a dual high-bandwidth, fast single-pole double throw (SPDT) CMOS switch. It can be used as an analog switch or as a low-delay bus switch. Specified over a wide operating power supply voltage, 1.65V to 5.5V, the PI5A4764 has a low On-Resistance of 0.6 @ 2.7V. Break-before-make switching prevents both switches being enabled simultaneously. This eliminates signal disruption during switching. The control input, INX, tolerates input drive signals up to 6.0V, independent of supply voltage. The PI5A4764 shunt switches connected to ground in order to dissipate capacitance that builds up on the unconnected NC or NO line. As a result, reduction of popping and clicking sounds is achieved when switching between audio sources.
Applications
* * * * * * * * * * * Cell Phones PDAs MP3 players Portable Instrumentation Computer Peripherals Speaker Headset Switching Power Routing Relay Replacement Audio and Video Signal Routing PCMCIA Cards Modems
Pin Configuration /Block Diagram (top view) CSP
NO2
C1
VCC B1
SHUNT SWITCH
A1
NO1
COM2
C2
A2
COM1
NC2
C3
A3
NC1
IN2
C4
B4
A4
GND
IN1
Pin Description
Pin # A1, C1 B1 A3, C3 B4 A2, C2 A4, C4 Name NOX VCC NCX GND COMX INX Description Data Port (Normally open) Positive Power Supply Data Port (Normally closed) Ground Common Output/Data Port Logic Control
1
Logic Function Table
Logic Input (INX) 0 1
Note: 1. x = 1, or 2
Function NCX Connected to COMX NOX Connected to COMX
PS8790
10/20/05
PI5A4764 Small Package, Dual SPDT Audio Clickless Analog Switch
Absolute Maximum Ratings(1)
Supply Voltage VCC ............................................ -0.5V to +7V DC Switch Voltage (VS)(2) ........................ -0.5V to VCC +0.5V DC Input Voltage (VIN)(2) ................................ -0.5V to +7.0V DC Output Current (VOUT) ........................................... 128mA DC VCC or Ground Current (ICC/IGND) ....................... 100mA Storage Temperature Range (TSTG) .............. -65C to +150C Junction Temperature under Bias (TJ) .............................150C Junction Lead Temperature (TL) (Soldering, 10 seconds) ................................................260C Power Dissipation (PD) @ +85C .................................. 180mW
Recommended Operating Conditions(3)
Supply Voltage Operating (VCC) . . . . . . . . . . . . 1.65V to 5.5V Control Input Voltage (VIN) . . . . . . . . . . . . . . . . . . . 0V to VCC Switch Input Voltage (VIN) . . . . . . . . . . . . . . . . . . . . 0V to VCC Output Voltage (VOUT) . . . . . . . . . . . . . . . . . . . . . . . 0V to VCC Operating Temperature (TA) . . . . . . . . . . . . . . . -40C to +85C Input Rise and Fall Time (tr,tf) Control Input VCC = 2.3V - 3.6V. . . . . . . . . 0ns/V to 10ns/V Control Input VCC = 4.5V - 5.5V. . . . . . . . . . 0ns/V to 5ns/V Thermal Resistance (JA) . . . . . . . . . . . . . . . . . . . . . . 350C/W
Notes: 1. Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. 2. The input and output negative voltage ratings may be exceeded if the inut and output diode current ratings are observed. 3. Control input must be held HIGH or LOW; it must not float.
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PS8790
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PI5A4764 Small Package, Dual SPDT Audio Clickless Analog Switch
DC Electrical Characteristics +3V Supply
Parameter Analog Switch Analog Signal Range NC On-Resistance NO On-Resistance On-Resistance Match Between Channels NC On-Resistance Flatness NO On-Resistance Flatness Shunt Switch Resistance COM On Leakage Current Digital I/O Input Logic High Input Logic Low IN Input Leakage Current Power Supply Power-Supply Range Supply Current VCC ICC VIH VIL IIN VNO , VNC , VCOM RON(NC) RON(NO) RON RONF(NC) RONF(NO) RSH ICOM (ON) Symbol
(VCC = 2.7V to 3.3V, TA = -40 C to +85 C, unless otherwise noted. Typical values are at 3V and +25C.) Test Conditions Min. Typ. Max. Units
0 VCC = 2.7V, ICOM = 100mA, VNC = 0 toVCC VCC = 2.7V, ICOM = 100mA, VNO = 0 to VCC VCC = 2.7V, ICOM = 100mA, VNO or VNC = 1.5V VCC = 2.7V, ICOM = 100mA, VNC = 0 to VCC VCC = 2.7V, ICOM = 100mA, VNO = 0 to VCC INO or INC = 10mA, VCC = 2.7V VCC = 2.7V, VNC or VNO = 0.3V, +2.5V, VCOM = +2.5V, 0.3V VCC = 2.7V to 3.3V VCC = 4.2V to 5.5V VCC = 2.7V to 3.3V VCC = 4.2V to 5.5V VIN = 0 or VCC -1 -160 0.5 0.5 0.01 .15 .15 30
VCC 0.6 0.6 0.06 0.4 0.4
V
160 nA
1.8 2.0 0.6 0.8 1 A V
1.65 VCC = 5.5V, VIN = 0 or VCC 4
5.5 12
V A
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PS8790
10/20/05
PI5A4764 Small Package, Dual SPDT Audio Clickless Analog Switch
Switch and AC Characteristics
Parameter Turn-On Time Symbol tON Test Conditions VCC = 2.7V, VNO or VNC = 1.5V, RL = 50, CL = 35pF, See Test Circuit Fig. 1 & 2 VCC = 2.7V, VNO or VNC = 1.5V, RL = 50, CL = 35pF, See Test Circuit Fig. 1 & 2 VCC = 2.7V, VNO or VNC = 1.5V, RL = 50, CL = 35pF, See Test Circuit Fig. 3 COM = 0, RS = 0, CL = 1nF, See Test Circuit Fig. 4 CL = 5pF, RL = 50, f = 100kHz, VCOM = 1 VRMS, See Test Circuit Fig. 5 CL = 5pF, RL = 50, f = 100kHz, VCOM = 1 VRMS, See Test Circuit Fig. 6 See Test Circuit Fig. 9 RL = 32, VIN = 3.5V, VCC = 4.5V f = 20Hz to 20kHz Total Harmonic Distortion THD RL = 32, VIN = 2.0V, VCC = 3.4V f = 20Hz to 20kHz RL = 32, VIN = 1.5V, VCC = 2.7V f = 20Hz to 20kHz Min. Typ. 25.0 Max. 60.0 Units
Turn-Off Time
tOFF
6
20.0
ns
Break-Before-Make Delay Charge Injection Off-Isolation Crosstalk 3dB Bandwidth
tBBM Q OIRR XTALK f3dB
25 47 -53 dB -84 37 0.03 0.026 0.17 % MHz pC
Capacitance
Parameter NC On Capacitance NO On Capacitance Symbol CNC (ON) CNO (ON) Test Conditions f = 1 MHz, See Test Circuit Fig. 8 f = 1 MHz, See Test Circuit Fig. 8 Min. Typ. 167 167 Max. Units
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PS8790
10/20/05
PI5A4764 Small Package, Dual SPDT Audio Clickless Analog Switch
Test Circuits and Timing Diagrams
VCC
VCC COM
RL IN LOGIC INPUT GND
VN
NC or NO
VOUT
CL
50
35pF
Notes: 1. Unused input (NC or NO) must be grounded.
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 1. AC Test Circuit
Logic Input
VIH VIL Off 50% On VOUT Off tOFF 90% tON Logic Input Waveforms inverted for Switches that have opposite logic * 1.5V for 3.3V Supply 90%
tr < 5ns tf < 5ns
Switch Output 0V
Figure 2. AC Waveforms
VIN
NC NO
COM
VOUT RL CL 35pF
Logic Input VOUT
50%
A Logic Input
50
0.9 x VOUT t BBM
Figure 3. Break Before Make Interval Timing
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PS8790
10/20/05
PI5A4764 Small Package, Dual SPDT Audio Clickless Analog Switch
RGEN
NC or NO
COM CL 1nF
VOUT
Logic Input
OFF
ON
OFF
VGEN
IN Logic Input Q = (V OUT )(CL )
V OUT
Figure 4. Charge Injection Test
VCC 10nF
10nF VCC
50
Signal Generator
COM
VCC Logic Input 0V or VIH
50
IN
or NC
Signal Generator
NC NO
VCC
COM
50
NO
Analyzer
GND
Analyzer
GND
IN
CL 5pF
RL
50
CL 5pF
RL
50
Figure 5. Off Isolation
Note: 1. Crosstalk measured from one channel to the pins of the other channel.
Figure 6. Crosstalk
VCC 10nF
VCC 10nF
COM Capacitance Meter f = 1 MHz NO
or NC
VCC Logic Input 0V or VIH
Capacitance Meter f = 1 MHz
IN
COM
VCC Logic Input 0V or VIH
IN NO
or NC
GND
GND
Figure 7. Channel Off Capacitance
Figure 8. Channel On Capacitance
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PS8790
10/20/05
PI5A4764 Small Package, Dual SPDT Audio Clickless Analog Switch
VCC 10nF
50
Signal Generator
Logic Input 0V or VIH
NC or NO IN
VCC
COM
ANALYZER
50
GND
Figure 9. Bandwidth
Packaging Mechanical : 2x1.5mm CSP
2.00 0.05
Pin 1 Indicator
1.50 0.05
0.70 0.05 0.27 0.03
0.33 REF
Product Marking
TOP VIEW
1.5 Basic 0.25 Basic
0.50 Basic
+
C B A
Pin 1 Indicator
+
+
1.00 Basic +
1
2
3
4
0.37 Basic
BOTTOM VIEW
Ordering Information
Ordering Code PI5A4764GAE Packaging Code GA Package Type Pb-free & Green, 10-ball CSP
Notes: * Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ * X suffix = Tape & Reel
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8790 10/20/05

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