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PDF ISL54212 Data sheet ( Hoja de datos )
| Número de pieza | ISL54212 | |
| 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 ISL54212 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 2.5V to 5.5V
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 ISL54212 logic control pins are 1.8V compatible which
allows for control via a standard µcontroller. The part has an
audio enable control pin to open all the switches and put the
part in a low power state.
The ISL54212 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
September 18, 2007
ISL54212
FN6556.0
Features
• High Speed (480Mbps) and Full Speed (12Mbps)
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 15mW into 32Ω Load . . . . . . . . . . . . <0.06%
• Cross-talk Audio Channels (20Hz to 20kHz) . . . . . -110dB
• Single Supply Operation (VDD) . . . . . . . . . . . . 2.5V to 5.5V
• -3dB Bandwidth USB Switches . . . . . . . . . . . . . . . 630MHz
• Available in µTQFN and TDFN Packages
• Pb-Free (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
ISL54212
LOGIC CIRCUITRY
4MΩ
CTRL
D-
D+
COM+
50kΩ
50kΩ
L
R
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. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL54212
Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: VDD = +3.3V, GND = 0V, VINH = 1.4V, VINL = 0.5V, VCTRLH = 1.4V,
VCTRLL = 0.5V, (Note 4), unless otherwise specified. (Continued)
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PARAMETER
TEST CONDITIONS
TEMP MIN
MAX
(°C) (Notes 5, 8) TYP (Notes 5, 8) UNITS
DIGITAL INPUT CHARACTERISTICS
Voltage Low, VINL , VCTRLL
Voltage High, VINH, VCTRLH
Input Current, IINL, IINH
VDD = 2.7V to 3.6V
VDD = 2.7V to 3.6V
VDD = 3.6V, IN = 0V or 3.6V, CTRL = 0V
Full -
- 0.5 V
Full 1.4
-
-V
25 -10
2.5
10 nA
Full -50
-
50 nA
Input Current, ICTRLL
VDD = 3.6V, IN = 0V, CTRL = 0V
25 -15
Full -50
10
-
15 nA
50 nA
Input Current, ICTRLH
VDD = 3.6V, IN = 0V, CTRL = 3.6V
25 -1.1 1.0 1.1 μA
Full -2 - 2 μA
CTRL Pull-Down Resistor, RCTRL VDD = 3.6V, IN = 0V, CTRL = 3.6V
NOTES:
25 - 4 - MΩ
4. VLOGIC = Input voltage to perform proper function.
5. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
6. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range.
7. RON matching between channels is calculated by subtracting the channel with the highest max RON value from the channel with lowest max
RON value, between L and R or between D+ and D-.
8. Parts are 100% tested at +25°C. Over temperature limits established by characterization and are not production tested.
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
COMx
VIN GND
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
5 FN6556.0
September 18, 2007
5 Page 
ISL54212
Typical Performance Curves TA = +25°C, Unless Otherwise Specified (Continued)
www.DataSheet4U.com
VDD = 5.5V
TIME SCALE (10ns/DIV)
FIGURE 12. EYE PATTERN: 12MBps WITH SWITCHES IN THE SIGNAL PATH
VDD = 3.3V
TIME SCALE (10ns/DIV)
FIGURE 13. EYE PATTERN: 12MBps WITH SWITCHES IN THE SIGNAL PATH
11
FN6556.0
September 18, 2007
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet ISL54212.PDF ] | |
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