PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Features
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CMOS Technology for Bus and Analog Applications
Low On-Resistance: 0.6Ω @ 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
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 0.6Ω @ 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.
Applications
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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
NO
X
V
CC
NC
X
GND
COM
X
IN
X
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 (IN
X
)
0
1
Note:
1. x = 1, or 2
Function
NC
X
Connected to COM
X
NO
X
Connected to COM
X
PS8790
10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
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
) .............. –65°C to +150°C
Junction Temperature under Bias (T
J
) .............................150°C
Junction Lead Temperature (T
L
)
(Soldering, 10 seconds) ................................................260°C
Power Dissipation (P
D
) @ +85°C .................................. 180mW
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
) . . . . . . . . . . . . . . . –40°C to +85°C
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 (θ
JA
) . . . . . . . . . . . . . . . . . . . . . . 350°C/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.
2
PS8790
10/20/05
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
V
CC
I
CC
V
IH
V
IL
I
IN
V
NO
, V
NC
,
V
COM
R
ON(NC)
R
ON(NO)
∆R
ON
R
ONF(NC)
R
ONF(NO)
R
SH
I
COM (ON)
Symbol
(V
CC
= 2.7V to 3.3V, T
A
= -40 C to +85 C, unless otherwise noted. Typical values are at 3V and +25°C.)
Test Conditions
Min.
Typ. Max.
Units
0
V
CC
= 2.7V, I
COM
= 100mA,
V
NC
= 0 toV
CC
V
CC
= 2.7V, I
COM
= 100mA,
V
NO
= 0 to V
CC
V
CC
= 2.7V, I
COM
= 100mA,
V
NO
or VNC = 1.5V
V
CC
= 2.7V, I
COM
= 100mA,
V
NC
= 0 to V
CC
V
CC
= 2.7V, I
COM
= 100mA,
V
NO
= 0 to V
CC
I
NO
or I
NC
= 10mA, V
CC
= 2.7V
V
CC
= 2.7V, V
NC
or V
NO
= 0.3V, +2.5V,
V
COM
= +2.5V, 0.3V
V
CC
= 2.7V to 3.3V
V
CC
= 4.2V to 5.5V
V
CC
= 2.7V to 3.3V
V
CC
= 4.2V to 5.5V
V
IN
= 0 or V
CC
-1
-160
0.5
0.5
0.01
.15
.15
30
V
CC
0.6
0.6
0.06
0.4
0.4
V
Ω
Ω
160
nA
1.8
2.0
0.6
0.8
1
µA
V
1.65
V
CC
= 5.5V, V
IN
= 0 or V
CC
4
5.5
12
V
µA
3
PS8790
10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Switch and AC Characteristics
Parameter
Turn-On Time
Symbol
t
ON
Test Conditions
V
CC
= 2.7V, V
NO
or V
NC
= 1.5V,
R
L
= 50Ω, C
L
= 35pF,
See Test Circuit Fig. 1 & 2
V
CC
= 2.7V, V
NO
or V
NC
= 1.5V,
R
L
= 50Ω, C
L
= 35pF,
See Test Circuit Fig. 1 & 2
V
CC
= 2.7V, V
NO
or V
NC
= 1.5V,
R
L
= 50Ω, C
L
= 35pF,
See Test Circuit Fig. 3
COM = 0, R
S
= 0, C
L
= 1nF,
See Test Circuit Fig. 4
C
L
= 5pF, R
L
= 50Ω, f = 100kHz,
V
COM
= 1 V
RMS
,
See Test Circuit Fig. 5
C
L
= 5pF, R
L
= 50Ω, f = 100kHz,
V
COM
= 1 V
RMS
,
See Test Circuit Fig. 6
See Test Circuit Fig. 9
R
L
= 32Ω, V
IN
= 3.5V, V
CC
= 4.5V
f = 20Hz to 20kHz
Total Harmonic Distortion
THD
R
L
= 32Ω, V
IN
= 2.0V, V
CC
= 3.4V
f = 20Hz to 20kHz
R
L
= 32Ω, V
IN
= 1.5V, V
CC
= 2.7V
f = 20Hz to 20kHz
Min.
Typ.
25.0
Max.
60.0
Units
Turn-Off Time
t
OFF
6
20.0
ns
Break-Before-Make Delay
Charge Injection
Off-Isolation
Crosstalk
3dB Bandwidth
t
BBM
Q
O
IRR
X
TALK
f
3dB
25
47
-53
dB
-84
37
0.03
0.026
0.17
%
MHz
pC
Capacitance
Parameter
NC On Capacitance
NO On Capacitance
Symbol
C
NC (ON)
C
NO (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
4
PS8790
10/20/05
PI5A4764
Small Package, Dual SPDT Audio Clickless Analog Switch
Test Circuits and Timing Diagrams
V
CC
V
CC
COM
R
L
IN
LOGIC
INPUT
GND
V
N
NC
or NO
V
OUT
C
L
50Ω
35pF
Notes:
1. Unused input (NC or NO) must be grounded.
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 1. AC Test Circuit
Logic
Input
V
IH
V
IL
Off
50% On
V
OUT
Off
t
OFF
90%
t
ON
Logic Input Waveforms inverted for
Switches that have opposite logic
* 1.5V for 3.3V Supply
90%
t
r
< 5ns
t
f
< 5ns
Switch
Output
0V
Figure 2. AC Waveforms
V
IN
NC
NO
COM
V
OUT
R
L
C
L
35pF
Logic
Input
V
OUT
50%
A
Logic
Input
50Ω
0.9 x V
OUT
t
BBM
Figure 3. Break Before Make Interval Timing
5
PS8790
10/20/05
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