ISL54217 Intersil Corporation, ISL54217 Datasheet - Page 9

• Manufacturer Part Number: ISL54217
• Description: USB 2.0 High-Speed x 2Channels/Stereo Audio Dual SP3T
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Block Diagram
Detailed Description
The ISL54217 device consists of dual SP3T (single
pole/triple throw) analog switches. It operates from a single
DC power supply in the range of 2.7V to 4.6V. It was
designed to function as differential 3-to-1 multiplexer to
select between two different USB differential data signals
and audio L and R stereo signals. It comes in a tiny µTQFN
and TQFN packages for use in MP3 players, PDAs, cell
phones, and other personal media players.
www.DataSheet4U.com
TRANSCEIVER
TRANSCEIVER
TRANSCEIVER
HIGH-SPEED
HIGH-SPEED
Set Audio Analyzer for Peak Detection, 32 Samples/Sec, Aweighted Filter, Manual Range 1X/Y, Units to dBV
CODEC
UART
AUDIO
USB
USB
OR
#1
#2
9
R
LOAD
SYSTEM II CASCADE
(Continued)
AUDIO PRECISION
FIGURE 9. CLICK AND POP TEST CIRCUIT
ANALYZER
1D-
1D+
2D-
2D+
L
R
CHA
CLICK/
POP
R
LOAD
CHB
ISL54217
50kΩ
GND
LOGIC CONTROL
ISL54217
VDD
COM-
COM+
50kΩ
3.3V
A device consists of two 2.3Ω audio switches and four 6.2Ω
USB switches. The audio switches can accept signals that
swing below ground. They were designed to pass audio left
and right stereo signals, that are ground referenced, with
minimal distortion. The USB switches were designed to pass
high-speed USB differential data signals with minimal edge
and phase distortion.
The ISL54217 was specifically designed for MP3 players,
personal media players and cellphone applications that need
GND
1kΩ
3.3V
CLICK
V
AND
POP
DD
C0, C1
4MΩ
C
COM +
COM -
0V TO V
SQUARE WAVE
R
L
C0
C1
DD
µCONTROLLER
V
BUS
December 11, 2008
FN6817.0