ISL54205EVAL1Z

Manufacturer Part NumberISL54205EVAL1Z
DescriptionMP3/USB 2.0 High Speed Switch with Negative Signal Handling
ManufacturerINTERSIL [Intersil Corporation]
ISL54205EVAL1Z datasheet
 


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Data Sheet
MP3/USB 2.0 High Speed Switch with
Negative Signal Handling
The Intersil ISL54205A 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 ISL54205A incorporates circuitry for detection of the USB
V
voltage, which is used to switch between the audio and
BUS
USB signal sources in the portable device. The part has a
control pin to open all the switches and put the part in a low
power down state.
The ISL54205A is available in a small 10 Ld 2.1mm x 1.6mm
μ
ultra-thin
TQFN package and a 10Ld 3mm x 3mm TDFN
package. It operates over a temperature range of -40 to
+85°C.
Related Literature
• Application Note AN1280 “ISL54205EVAL1Z Evaluation
Board User’s Manual.
• 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
22kΩ
COM -
COM +
1
December 7, 2006
Features
• High Speed (480Mbps) Signaling Capability per USB 2.0
• Low Distortion Negative Signal Capability
• Detection of V
• 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 (20Hz to 20kHz) . . . . . . . . . . . . . . . . . . -110dB
• Single Supply Operation (V
• -3dB Bandwidth USB Switch . . . . . . . . . . . . . . . . . 630MHz
• Available in
• 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
V
DD
ISL54205A
V
BUS
CTRL
Logic Circuitry
4MΩ
4MΩ
D-
D+
50kΩ
L
R
50kΩ
GND
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
All other trademarks mentioned are the property of their respective owners.
ISL54205A
FN6342.1
Voltage on USB Cable
BUS
) . . . . . . . . . . . . 2.7V to 3.6V
DD
μ
TQFN and TDFN Packages
μCONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
CODEC
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved

ISL54205EVAL1Z Summary of contents

  • Page 1

    ... TQFN package and a 10Ld 3mm x 3mm TDFN package. It operates over a temperature range of -40 to +85°C. Related Literature • Application Note AN1280 “ISL54205EVAL1Z Evaluation Board User’s Manual. • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” ...

  • Page 2

    ... ISL54205AIRZ 205Z - TDFN (Note) ISL54205EVAL1Z -40 to +85 Evaluation Board NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate or NiPdAu termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

  • Page 3

    Absolute Maximum Ratings V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 ...

  • Page 4

    Electrical Specifications - 2.7V to 3.6V Supply PARAMETER r Flatness FLAT(ON COMx OFF Leakage Current D+(OFF D-(OFF) COM float R ON Leakage Current ...

  • Page 5

    Electrical Specifications - 2.7V to 3.6V Supply PARAMETER Input Current BUSH DD Input Current CTRLH DD V Pull-Down Resistor BUS VBUS DD CTRL Pull-Down Resistor CTRL DD NOTES Input ...

  • Page 6

    Test Circuits and Waveforms V BUSH LOGIC INPUT V BUSL V OUT SWITCH OUTPUT 0V FIGURE 2A. MEASUREMENT POINTS /100mA ON 1 CTRL 100mA COMX GND Repeat test ...

  • Page 7

    Test Circuits and Waveforms CTRL AUDIO OR USB IMPEDANCE ANALYZER COMx GND Repeat test for all switches. FIGURE 5. CAPACITANCE TEST CIRCUIT t ri 90% 50% 10% DIN+ t skew_i DIN- 90% 50% 10 90% 10% ...

  • Page 8

    Application Block Diagram 22kΩ Detailed Description The ISL54205A device is a dual single pole/double throw (SPDT) analog switch device that operates from a single DC power supply in the range of 2.7V to 3.6V. It was designed to function as ...

  • Page 9

    The USB switches are active (turned ON) whenever the ≥ V voltage 0.8V. V BUS DD BUS low, so when V is floating, the USB switches are OFF. BUS Note: Whenever the USB switches are ON ...

  • Page 10

    Typical Performance Curves 0. 32Ω LOAD V = 0.707V LOAD RMS 0.10 0. 2.6V DD 0.08 0. 2. 0.05 0.04 20 200 FREQUENCY (Hz) FIGURE 8. THD+N vs ...

  • Page 11

    Typical Performance Curves FIGURE 12. EYE PATTERN: 480Mbps WITH SWITCH IN THE SIGNAL PATH 11 ISL54205A T = +25°C, Unless Otherwise Specified (Continued) A TIME (10ns/DIV) FN6342.1 December 7, 2006 ...

  • Page 12

    Typical Performance Curves 50Ω 0. P-P P-P 1M 10M FREQUENCY (Hz) FIGURE 13. FREQUENCY RESPONSE 12 ISL54205A T = +25°C, Unless Otherwise Specified (Continued) A Die ...

  • Page 13

    Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN INDEX AREA 0.10 C TOP VIEW 0. 0.05 C SEATING PLANE A1 SIDE VIEW (DATUM A) PIN # ...

  • Page 14

    Thin Dual Flat No-Lead Plastic Package (TDFN INDEX AREA TOP VIEW C SIDE VIEW SEATING PLANE D2 7 (DATUM B) D2 INDEX AREA (DATUM N ...