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PDF ISL54206 Data sheet ( Hoja de datos )
| Número de pieza | ISL54206 | |
| Descripción | MP3/USB 2.0 High Speed Switch | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
MP3/USB 2.0 High Speed Switch with
Negative Signal Handling
The Intersil ISL54206 dual SPDT (Single Pole/Double
Throw) switches combine low distortion audio and accurate
USB 2.0 high speed data (480Mbps) signal switching in the
same low voltage device. When operated with a 2.7V to 3.6V
single supply these analog switches allow audio signal
swings below-ground, allowing the use of a common USB
and audio headphone connector in Personal Media Players
and other portable battery powered devices.
The ISL54206 logic control pins are 1.8V compatible which
allows for control via a standard µcontroller. With a VDD
voltage in the range of 2.7V to 3.6V the IN pin voltage can
exceed the VDD rail allowing for the USB 5V VBUS voltage
from a computer to directly drive the IN pin to switch
between the audio and USB signal sources in the portable
device. The part has an audio enable control pin to open all
the switches and put the part in a low power state.
The ISL54206 is available in a small 10 Ld 2.1mmx1.6mm
ultra-thin µTQFN package and a 10 Ld 3mmx3mm TDFN
package. It operates over a temperature range of -40 to
+85°C.
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
Application Block Diagram
December 18, 2006
ISL54206
FN6409.0
Features
• High Speed (480Mbps) Signaling Capability per USB 2.0
• Low Distortion Negative Signal Capability
• Control Pin to Open all Switches and Enter Low Power
State
• Low Distortion Headphone Audio Signals
- THD+N at 20mW into 32Ω Load . . . . . . . . . . . . . <0.1%
• Cross-talk Audio Channels (20Hz to 20kHz) . . . . . -110dB
• Single Supply Operation (VDD) . . . . . . . . . . . . 1.8V to 5.5V
• -3dB Bandwidth USB Switches . . . . . . . . . . . . . . . 630MHz
• Available in µTQFN and TDFN Packages
• Pb-Free Plus Anneal (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit Requirements
Without Additional External Components
Applications
• MP3 and Other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
• Audio/USB Switching
VBUS
IN
COM-
VDD
ISL54206
LOGIC CIRCUITRY
4MΩ
CTRL
D-
D+
COM+
50kΩ
L
R
50kΩ
GND
µCONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
CODEC
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL54206
Test Circuits and Waveforms
LOGIC
INPUT
VDD
0V
50%
tOFF
tr <20ns
tf <20ns
SWITCH
INPUT
VINPUT
SWITCH
OUTPUT
0V
VOUT
90%
tON
90%
Logic input waveform is inverted for switches that have the opposite
logic sense.
VDD
C
VINPUT
SWITCH
INPUT
CTRL
Audio or USB
IN
VIN GND
COMx
VOUT
RL CL
50Ω 10pF
Repeat test for all switches. CL includes fixture and stray
capacitance.
VOUT
=
V (INPUT)
------------R-----L-------------
RL + R(ON)
FIGURE 1A. MEASUREMENT POINTS
FIGURE 1. SWITCHING TIMES
FIGURE 1B. TEST CIRCUIT
VDD C
LOGIC
INPUT
VDD
0V
VINPUT
CTRL
D- or D+
L or R
IN
COMx
VOUT
RL CL
50Ω 10pF
VOUT
SWITCH
OUTPUT
0V
90%
tD
FIGURE 2A. MEASUREMENT POINTS
VIN GND
Repeat test for all switches. CL includes fixture and stray
capacitance.
FIGURE 2B. TEST CIRCUIT
FIGURE 2. BREAK-BEFORE-MAKE TIME
VDD
C
VDD
C
RON = V1/100mA
VL OR R
CTRL
L OR R
V1
100mA
COMx
GND
IN
OV
RON = V1/40mA
VD- OR D+
CTRL
D- OR D+
40mA
V1
COMx
GND
IN VDD
Repeat test for all switches.
FIGURE 3. AUDIO RON TEST CIRCUIT
Repeat test for all switches.
FIGURE 4. USB RON TEST CIRCUIT
5 FN6409.0
December 18, 2006
5 Page 
ISL54206
Typical Performance Curves TA = +25°C, Unless Otherwise Specified (Continued)
TIME (10ns/DIV)
FIGURE 12. EYE PATTERN: 480Mbps WITH SWITCH IN THE SIGNAL PATH
1
USB SWITCH
Die Characteristics
0
SUBSTRATE POTENTIAL (POWERED UP):
-1
GND (TDFN Paddle Connection: Tie to GND or Float)
-2
TRANSISTOR COUNT:
-3
98
-4
PROCESS:
Submicron CMOS
RL = 50Ω
VIN = 0.2VP-P to 2VP-P
1M
10M
100M
FREQUENCY (Hz)
FIGURE 13. FREQUENCY RESPONSE
1G
11 FN6409.0
December 18, 2006
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ISL54206.PDF ] | |
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