1
PS8790 10/20/05
Features
CMOS Technology for Bus and Analog Applications
Low On-Resistance: 0.6 @ 2.7V
Wide V
CC
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% @ V
CC = 2.7V)
Extended Industrial Temperature Range: 40
C to 85
C
Packaging (Pb-free & Green):
- 10-ball CSP
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
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
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, IN
X
, 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.
Pin Configuration /Block Diagram (top view) CSP
NC2
COM2
NO2
IN2
VCC
C1
C2
C3
C4
B1
GND
B4
NC1
COM1
NO1
IN1
A1
A2
A3
A4
SHUNT
SWITCH
Logic Function Table
Logic Input (IN
X
)
Function
0
NC
X
Connected to COM
X
1
NO
X
Connected to COM
X
Pin Description
Pin #
Name
Description
A1, C1
NO
X
Data Port (Normally open)
B1
V
CC
Positive Power Supply
A3, C3
NC
X
Data Port (Normally closed)
B4
GND
Ground
A2, C2
COM
X
Common Output/Data Port
A4, C4
IN
X
Logic Control
Note:
1. x = 1, or 2
2
PS8790 10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Recommended Operating Conditions
(3)
Supply Voltage Operating (V
CC
) . . . . . . . . . . . . 1.65V to 5.5V
Control Input Voltage (V
IN
) . . . . . . . . . . . . . . . . . . . 0V to V
CC
Switch Input Voltage (V
IN
). . . . . . . . . . . . . . . . . . . . 0V to V
CC
Output Voltage (V
OUT
) . . . . . . . . . . . . . . . . . . . . . . . 0V to V
CC
Operating Temperature (T
A
) . . . . . . . . . . . . . . . 40C to +85C
Input Rise and Fall Time (t
r
,t
f
)
Control Input V
CC
= 2.3V - 3.6V. . . . . . . . . 0ns/V to 10ns/V
Control Input V
CC
= 4.5V - 5.5V. . . . . . . . . . 0ns/V to 5ns/V
Thermal Resistance (
JA
) . . . . . . . . . . . . . . . . . . . . . . 350C/W
Absolute Maximum Ratings
(1)
Supply Voltage V
CC
............................................ 0.5V to +7V
DC Switch Voltage (V
S
)
(2)
........................0.5V to V
CC
+0.5V
DC Input Voltage (V
IN
)
(2)
................................ 0.5V to +7.0V
DC Output Current (V
OUT
) ........................................... 128mA
DC V
CC
or Ground Current (I
CC
/I
GND
)
....................... 100mA
Storage Temperature Range (T
STG
) .............. 65C to +150C
Junction Temperature under Bias (T
J
) .............................150C
Junction Lead Temperature (T
L
)
(Soldering, 10 seconds) ................................................260C
Power Dissipation (P
D
) @ +85C .................................. 180mW
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.
3
PS8790 10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
DC Electrical Characteristics +3V Supply
(V
CC
= 2.7V to 3.3V, T
A
= -40 C to +85 C, unless otherwise noted. Typical values are at 3V and +25C.)
Parameter
Symbol
Test Conditions
Min.
Typ. Max. Units
Analog Switch
Analog Signal Range
V
NO
, V
NC
,
V
COM
0
V
CC
V
NC
On-Resistance
R
ON(NC)
V
CC
= 2.7V, I
COM
= 100mA,
V
NC
= 0 toV
CC
0.5
0.6
NO
On-Resistance
R
ON(NO)
V
CC
= 2.7V, I
COM
= 100mA,
V
NO
= 0 to V
CC
0.5
0.6
On-Resistance Match
Between Channels
R
ON
V
CC
= 2.7V, I
COM
= 100mA,
V
NO
or VNC = 1.5V
0.01 0.06
NC
On-Resistance Flatness
R
ONF(NC)
V
CC
= 2.7V, I
COM
= 100mA,
V
NC
= 0 to V
CC
.15
0.4
NO
On-Resistance Flatness
R
ONF(NO)
V
CC
= 2.7V, I
COM
= 100mA,
V
NO
= 0 to V
CC
.15
0.4
Shunt Switch Resistance
R
SH
I
NO
or I
NC
= 10mA, V
CC
= 2.7V
30
COM
On Leakage Current
I
COM (ON)
V
CC
= 2.7V, V
NC
or V
NO
= 0.3V, +2.5V,
V
COM
= +2.5V, 0.3V
-160
160
nA
Digital I/O
Input Logic High
V
IH
V
CC
= 2.7V to 3.3V
1.8
V
V
CC
= 4.2V to 5.5V
2.0
Input Logic Low
V
IL
V
CC
= 2.7V to 3.3V
0.6
V
CC
= 4.2V to 5.5V
0.8
IN
Input Leakage Current
I
IN
V
IN
= 0 or V
CC
-1
1
A
Power Supply
Power-Supply Range
V
CC
1.65
5.5
V
Supply Current
I
CC
V
CC
= 5.5V, V
IN
= 0 or V
CC
4
12
A
4
PS8790 10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Capacitance
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
NC On Capacitance
C
NC (ON)
f = 1 MHz, See Test Circuit Fig. 8
167
NO On Capacitance
C
NO (ON)
f = 1 MHz, See Test Circuit Fig. 8
167
Switch and AC Characteristics
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Turn-On Time
t
ON
V
CC
= 2.7V, V
NO
or V
NC
= 1.5V,
R
L
= 50, C
L
= 35pF,
See Test Circuit Fig. 1 & 2
25.0
60.0
ns
Turn-Off Time
t
OFF
V
CC
= 2.7V, V
NO
or V
NC
= 1.5V,
R
L
= 50, C
L
= 35pF,
See Test Circuit Fig. 1 & 2
6
20.0
Break-Before-Make Delay t
BBM
V
CC
= 2.7V, V
NO
or V
NC
= 1.5V,
R
L
= 50, C
L
= 35pF,
See Test Circuit Fig. 3
25
Charge Injection
Q
COM = 0, R
S
= 0, C
L
= 1nF,
See Test Circuit Fig. 4
47
pC
Off-Isolation
O
IRR
C
L
= 5pF, R
L
= 50, f = 100kHz,
V
COM
= 1 V
RMS
, See Test Circuit Fig. 5
-53
dB
Crosstalk
X
TALK
C
L
= 5pF, R
L
= 50, f = 100kHz,
V
COM
= 1 V
RMS
, See Test Circuit Fig. 6
-84
3dB Bandwidth
f
3dB
See Test Circuit Fig. 9
37
MHz
Total Harmonic Distortion THD
R
L
= 32, V
IN
= 3.5V, V
CC
= 4.5V
f = 20Hz to 20kHz
0.03
%
R
L
= 32, V
IN
= 2.0V, V
CC
= 3.4V
f = 20Hz to 20kHz
0.026
R
L
= 32, V
IN
= 1.5V, V
CC
= 2.7V
f = 20Hz to 20kHz
0.17
5
PS8790 10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
LOGIC
INPUT
R
L
50
COM
GND
IN
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
N
NC
or NO
V
CC
C
L
V
CC
V
OUT
35pF
Figure 1. AC Test Circuit
Figure 2. AC Waveforms
Figure 3. Break Before Make Interval Timing
Test Circuits and Timing Diagrams
C
L
35pF
R
L
50
t
BBM
V
OUT
0.9 x V
OUT
Logic
Input
COM
A
NC
NO
V
IN
Logic
Input
V
OUT
50%
Logic Input Waveforms inverted for
Switches that have opposite logic
* 1.5V for 3.3V Supply
t
ON
V
OUT
t
r
t
f
t
OFF
90%
90%
< 5ns
< 5ns
50%
Switch
Output
Logic
Input
V
IH
V
IL
0V
Off
On
Off
Notes:
1. Unused input (NC or NO) must be grounded.
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PS8790 10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Figure 4. Charge Injection Test
C
L
1nF
COM
IN
NC or NO
V
GEN
R
GEN
Logic
Input
Logic
Input
Q = (
V
OUT
)(C
L
)
V
OUT
OFF
ON
OFF
V
OUT
Figure 5. Off Isolation
COM
I
N
10nF
GND
NO
or
NC
V
CC
V
CC
Logic Input
0V or V
IH
RL
50
Signal
Generator
CL
5pF
50
Analyzer
Figure 6. Crosstalk
10nF
GND
V
CC
RL
50
Signal
Generator
CL
5pF
50
Analyzer
COM
NC
NO
V
CC
50
IN
Figure 7. Channel Off Capacitance
Figure 8. Channel On Capacitance
Capacitance
Meter
COM
IN
10nF
GND
f = 1 MHz
NO
or NC
V
CC
V
CC
Logic Input
0V or V
IH
Capacitance
Meter
COM
IN
10nF
GND
NO
V
CC
V
CC
f = 1 MHz
Logic Input
0V or V
IH
or
NC
Note:
1. Crosstalk measured from one channel to the pins of the other
channel.
7
PS8790 10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
Figure 9. Bandwidth
10nF
GND
NC
or
NO
Logic Input
0V or V
IH
IN
V
CC
V
CC
50
Signal
Generator
50
COM
ANALYZER
Packaging Mechanical : 2x1.5mm CSP
Ordering Information
Ordering Code
Packaging Code
Package Type
PI5A4764GAE
GA
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
+
+
+
+
0.37 Basic
1.00 Basic
Pin 1
Indicator
Pin 1
Indicator
Product
Marking
2.00 0.05
1.50 0.05
1.5 Basic
0.25 Basic
0.50 Basic
0.70 0.05
0.27 0.03
0.33 REF
TOP VIEW
BOTTOM VIEW
C
1
2
3
4
B
A
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