PI5PD2041B [PERICOM]
70m Current-Limited, Power-Distribution Switches;
| 型号： | PI5PD2041B |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | 70m Current-Limited, Power-Distribution Switches |
| 文件： | 总9页 (文件大小：553K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI3A288
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Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
Features
Description
PI3A288 is a dual, single-pole double throw (SPDT)
CMOS switch with negative signal handling capability
at all ports. It can be used as an analog switch or as a
low-delay bus switch. Operating over a wide power
supply voltage ranges from 1.65V to 4.3V, PI3A288
processes a low on-resistance and distortion. The ultra-
low THD performance enables PI3A288 to apply in
high-quality audio applications.
CMOS Technology for Bus and Analog Applications
Negative Signal Handling Capability at all Ports
Low On-Resistance: 0.35Ω at 1.8V Supply
On-Resistance Flatness 0.001Ω
Wide VDD Range: 1.65V to 4.3V
2.0Vrms analog signal range
Programmable soft-start and soft-stop time
-3dB Bandwidth: 255MHz
PI3A288 has also a soft-start and soft-stop feature so as
to minimize signal disruption during channel switching
High Off Isolation: -85dB @ 30kHz
Low THD: 0.0003% from 20Hz to 20kHz, 0.5VRMS
Crosstalk Rejection Reduces Signal Distortion:
-85dB @ 30kHz
Functional Block Diagram
High-impedance mode when VDD not applied
ESD：4kV for HBM mode, 1kV for CDM mode
Extended Industrial Temperature Range: –40°C to
85°C
Packaging (Pb-free & Green): –10-contact UQFN
(ZM10)
Applications
Cell Phones, PDAs, MP3 Players
Portable Instrumentation
Computer Peripherals
Speaker Headset Switching
Power Routing
Pin Description
Pin
1, 3
4
Name
NOX
GND
NCX
COMX
VDD
Description
Data Ports (Normally open)
Ground
2, 10
5, 8
9
Data Ports (Normally closed)
Common Output / Data Ports
Positive Power Supply
Relay Replacement
Audio and Video Signal Routing
PCMCIA Cards
7
IN
Logic Control Pins
6
SSCAP
Slew Rate Control Pin
Modems
Logic Function Table
Logic Input (IN)
Function
0
NC1 Connected to COM1
NC2 Connected to COM2
NO1 Connected to COM1
NO2 Connected to COM2
1
2015-10-0009
PT0541-4
11/03/15
1
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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Maximum Ratings
Note:
Storage Temperature………………………………….. -65℃ to +150℃
Ambient Temperature with Power Applied......................-40℃ to +85℃
Stresses greater than those listed under
MAXIMUM
RATINGS
may
cause
Supply Voltage VDD……………………………………..-0.5Vto +4.6V
Control Input Voltage VINx………………………………-0.5Vto +4.6V
DC Input Voltage VINPUT……………... VDD – 6.0V and -3.1V to +3.1V
Continuous Current NO_NC_COM_………………..…………±350mA
Peak Current NO_NC_COM_
(pulsed at 1ms 50% duty cycle) ……………………….….. ±400mA
Peak Current NO_NC_COM_
(pulsed at 1ms 10% duty cycle) ………………….……….. ±500mA
ESD HBM mode………………………………………………… 4kV
CDM mode………………………………………………… 1kV
permanent damage to the device. This is a
stress rating only and functional operation of
the device at these or any other conditions
above those indicated in the operational
sections of this specification is not implied.
Exposure to absolute maximum rating
conditions for extended periods may affect
reliability.
Control input must be held HIGH or LOW; it
must not float.
Recommended Operating Conditions
Symbol
Parameter
Conditions
Min.
1.65
0
Typ.
-
-
Max.
4.3
4.3
Unit
V
V
VDD
Operating Voltage
Control Input Voltage
-
-
VIN
VDD =< 2.3V
VDD > 2.3V
-
2.0
1.8
25
VINPUT
TA
Switch Input Voltage
Operating Temperature
VRMS
°C
-40
85
2015-10-0009
PT0541-4
11/03/15
2
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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Electrical Characteristics
(TA = –40°C to 85°C, unless otherwise noted. Typical values are at 1.8V and +25°C.)
Parameter
Symbol
Test Conditions
Min.
Typ. Max. Units
ANALOG SWITCH
VNO
VNC
VCOM
,
,
VDD =< 2.3V
VDD > 2.3V
2.0
Analog Signal Range
On-Resistance
VRMS
1.8
0.35
VDD = 1.8V, VCOM = 0V
Test Circuit Figure 1
VDD = 1.8V, VCOM = 0V between
same NC_ and NO_ channel
Test Circuit Figure 1
RON
-
-
-
Ω
Ω
On-Resistance Match
Between Channels
ΔRON
0.005 0.05
On-Resistance
Flatness
VDD = 1.8V, VCOM = -2.5V to +2.5V
Test Circuit Figure 1 (NOTE1)
VDD =1.8V
RONF
ICC
0.001
70
0.01
110
Ω
Supply Current
DIGITAL INPUTS
Input Logic High
Input Logic Low
IN Input Leakage
Current
-
μA
VIH
VIL
1.4
V
0.325
0.5
IIN
VDD = 1.8V, VIN=0 or 1.8V
-0.5
-
μA
DYNAMIC CHARACTERISTICS
VNO_ or VNC_ = 3V, RL = 32Ω
SSCAP=float
VNO_ or VNC_ = 3V, RL = 32Ω
SSCAP=float
SSCAP=0.01uF
VNC_ = 0.1V, 10% to 90%
Turn-Off Time
Turn-On Time
Soft-Start Time
Soft-Stop Time
tOFF
tON
tSTART
tSTOP
65
270
5
μs
μs
ms
ms
SSCAP=0.01uF
5
VNC_ = 0.1V, 90% to 10%
VBIAS=0V, VIN=0dBm
See Test Circuit Figure 2 30kHz
and Figure 3
NC-NO and COM-
NC/NO Off-Isolation
OISO
-
-85
-
dB
Channel-to-Channel
Crosstalk
VBIAS=0V, VIN=0dBm
See Test Circuit Figure 4
VBIAS=0V, VIN=0dBm
See Test Circuit Figure 5
f=20Hz to 20kHz, RL=32Ω,
VIN=0.5VRMS, VBIAS=0V (NOTE2)
XTALKD
f3dB
30kHz
-
-
-
-85
-
-
-
dB
-3dB Bandwidth
255
-110
MHz
dB
Total Harmonic
Distortion
THD+N
Note 1 and Note 2 ：These parameters are measured on TA=25°C
Capacitance
Uni
ts
Parameter
Symbol
Test Conditions
Min.
Typ. Max.
Control Pin Input
Capacitance
CIN
VDD=0V, f=1MHz,
-
6
-
NC Off Capacitance
NO Off Capacitance
NC On Capacitance
NO On Capacitance
CNC (OFF)
CNO (OFF)
CNC (ON)
CNO (ON)
VDD=1.8V, f = 1MHz, See Test Circuit Figure 6.
VDD=1.8V, f = 1MHz, See Test Circuit Figure 6.
VDD=1.8V, f = 1MHz, See Test Circuit Figure 7.
VDD=1.8V, f = 1MHz, See Test Circuit Figure 7.
-
-
-
-
14
14
35
35
-
-
-
-
pF
2015-10-0009
PT0541-4
11/03/15
3
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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Test Circuits and Timing Diagrams
Figure 1, On Resistance
CSSCAP
0.01uF
Figure 2, COM-NC/NO Isolation
CSSCAP
0.01uF
Figure 3, NC-NO Isolation
2015-10-0009
PT0541-4
11/03/15
4
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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CSSCAP
0.01uF
Figure 4, Channel-to-Channel Crosstalk
CSSCAP
0.01uF
Figure 5, Bandwidth
CSSCAP
0.01uF
Figure 6, Channel Off Capacitance
2015-10-0009
PT0541-4
11/03/15
5
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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CSSCAP
0.01uF
Figure 7, Channel On Capacitance
TYPICAL CHARACTERISTICS
THD vs Amp (Vrms)
THD vs Freq
-90
-95
-104
-106
-108
-110
-112
-114
-116
-118
0
0.5
1
1.5
2
100
1000
10000
100000
-100
-105
-110
-115
THD_1KHz_32ohm at 1.8Vdd
THD_1KHz_32ohm at 3.1Vdd
thd_0.5Vrms_32ohm at 1.8Vdd
thd_0.5Vrms_32ohm at 3.1Vdd
Figure 8, THD vs signal frequency
Figure 9, THD vs signal amplitude
Figure 10, Soft-start with CSSCAP = 10nF, VNC = + 50mV,
Figure 11, Soft-start with CSSCAP = 10nF, VNC = - 50mV,
VNO = 0V
VNO = 0V
Channel 1 = COM
Channel 2 = SSCAP
Channel 3 = IN
Channel 1 = COM
Channel 2 = SSCAP
Channel 3 = IN
2015-10-0009
PT0541-4
11/03/15
6
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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Crosstalk and Off isolation
0
10000
-10
100000
1000000
10000000
100000000
1000000000
-20
-30
-40
-50
-60
-70
-80
-90
-100
Frequency (Hz)
Off Isolation
Crosstalk
Figure12, Crosstalk and Isolation
Typical Application Circuit
GPIO
VCC=1.8V
R1
IN
200
C1
0.1uF
VDD
NO1
NC1
Negative Swing
Amplifier
COM2
COM1
Audio Connector
NO2
NC2
Negative Swing
Amplifier
SSCAP
CT
0.01uF
Figure12, Crosstalk and Isolation
Function Description
The PI3A288 is an ultra-small, ultra-low THD , low on-resistance, high ESD-protected DPDT switch that operates
from a +1.65V to 4.3V supply. These switches feature the low on-resistance (RON) necessary for high-performance
switching applications. The Beyond-the-Rails signal capability of the PI3A288 allows signals below ground and above
VCC to pass without distortion.
Analog Signal Levels
The topology of the switches allows the signal to drop below ground without the need of an external negative voltage
supply. The devices can also withstand analog signal levels of 2Vrms. in the case of lower VDD voltage.
Digital Control Input
The PI3A288 provides a single-bit control logic input, IN. IN controls the switch position. The logic control inputs can
be driven up to +4.3V regardless of the supply voltage. For example, given a +3.3V supply, the
output enables or select pins may be driven to low to 0V and high to 4.3V.
2015-10-0009
PT0541-4
11/03/15
7
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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Click and Pop Operation
The PI3A288 can pass ground referenced audio signals which allows it to be directly connected to audio drivers that
output ground referenced audio signals, eliminating the need for a DC blocking capacitor. Audio drivers that swing
around ground, however, do generate some DC offset, from a few millivolts to tens of millivolts. When switching
between audio channels or muting the audio signal, these small DC offset levels of the drivers can lead to a voltage
step across the speaker loads and create unwanted clicks and pops.
The PI3A288 has a special soft-start feature that slowly ramps the DC offset voltage from the audio driver to the
speaker load when turning on a switch channel. The ramp rate at the load is determined by the capacitor value
connected at the SSCAP pin. A soft-start capacitor value of 0.01μF provides obvious effect of eliminating pop-click
noise and is recommended.
2015-10-0009
PT0541-4
11/03/15
8
PI3A288
Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
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Mechanical Information 10-pin UQFN (ZM10)
Ordering Information
Part No.
Package Code
Package
Lead free and Green 10-pin UQFN1.8x1.4
Tape & reel
PI3A288ZMEX
ZM
Note:
E = Pb-free and Green
Adding X Suffix= Tape/Reel
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply
the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The
company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom.
2015-10-0009
PT0541-4
11/03/15
9
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