isl54406 Intersil Corporation, isl54406 Datasheet

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isl54406

Manufacturer Part Number
isl54406
Description
Stereo Click And Pop Eliminator With Audio Muting
Manufacturer
Intersil Corporation
Datasheet

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Stereo Click and Pop Eliminator with
Audio Muting
The Intersil ISL54406 is a Dual SPST (Single Pole/Single
Throw) switch that provides a very low distortion audio path
for a stereo headphone or high impedance line-in load. This
path can be interrupted to provide >110dB of off-isolation for
signal muting purposes into 32Ω or high impedance loads
such as consumer entertainment system line-inputs, MP3
docking systems for powered speaker or automotive
entertainment system in-line or cassette interfaces. Recovery
from muting is instant even with very large DC blocking
capacitors.
The ISL54406 also has comprehensive Click and Pop
elimination measures to prevent these artifacts from occurring
in the load due to system power-up/power-down, codec
enable/disable, headphone hot plug in, and audio muting
on/off situations. The Click and Pop elimination is effective
into low and high impedance loads and requires no external
timing components to deal with DC blocking capacitors placed
between the single supply codec and the load.
The ISL54406 is available in a 10 Ld TDFN (3mmx3mm) or a
tiny 10 Ld
operates over a temperature range of -40 to +85°C.
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Typical Application Diagram
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
µ
TQFN (1.8mmx1.4mm) ultra-thin package. It
®
1
Data Sheet
R
L
OUT
OUT
3.3V
ISL54406
V
DD
1-888-INTERSIL or 1-888-468-3774
0.1µF
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
CONTROL
LOGIC
GND
CLICK AND POP
CIRCUITRY
Features
• Single Supply Operation (V
• Negative Signal Swing Capability . . . . . . . . . . . . . . . . -1.5V
• Low THD
• Click and Pop Elimination . . . . . . . . . . . . . . . . . . . . . >60dB
• Audio Muting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >110dB
• Low Power Consumption . . . . . . . . . 21µW with 3V supply
• Low Power Shutdown Mode
• 1.8V Logic Compatible
• Available in 10 Ld TDFN (3mmx3mm) or tiny
• Pb-Free (RoHS Compliant)
Applications
• Consumer Entertainment Systems
• MP3 and other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
• Audio Switching and Muting
- THD+N at 1mW into 32Ω Load . . . . . . . . . . . . . <0.02%
10 Ld (1.8mmx1.4mm)
All other trademarks mentioned are the property of their respective owners.
May 28, 2008
|
SEL1
SEL2
Intersil (and design) is a registered trademark of Intersil Americas Inc.
L
R
IN
IN
Copyright Intersil Americas Inc. 2008. All Rights Reserved
µCONTROLLER
µ
TQFN Package
DD
) . . . . . . . . . . +2.7V to +5.0V
CODEC
AUDIO
ISL54406
FN6578.0

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isl54406 Summary of contents

Page 1

... The Click and Pop elimination is effective into low and high impedance loads and requires no external timing components to deal with DC blocking capacitors placed between the single supply codec and the load. The ISL54406 is available TDFN (3mmx3mm tiny 10 Ld TQFN (1.8mmx1.4mm) ultra-thin package. It µ ...

Page 2

... Ld 3x3 TDFN ( TOP VIEW VDD 1 LOGIC SEL2 CONTROL 2 LSHUNT LOUT 3 CLICK 4 ROUT AND POP 5 GND RSHUNT NOTE: 1. ISL54406 Switches Shown for SEL1 = Logic “1” and SEL2 = Logic “1”. Truth Table ISL54406 SHUNT SEL2 SEL1 SHUNT 0 0 OFF OFF 0 1 ...

Page 3

... OFF DD (See Figure 1) OFF Isolation, Mute Mode V = 3.0V 0.707V V = 3.0V 0.707V 3 ISL54406 Thermal Information Thermal Resistance (Typical, Notes 5 and 6)θ 1.8mmx1.4mm µTQFN Package ) + 0.3V 3mmx3mm TDFN . . . . . . . . . . . 0.3V) Maximum Junction Temperature (Plastic Package +150° 0.3V) Maximum Storage Temperature Range -65°C to +150°C DD Pb-free reflow profile ...

Page 4

... ON value. 12. Limits established by characterization and are not production tested. 13. Click and Pop Reduction specifications are limited by test equipment. 4 ISL54406 Test Conditions +3.0V, GND = 0V (Notes 7, 8), Unless Otherwise Specified (Continued) TEST CONDITIONS = 3 ...

Page 5

... Repeat test for all switches /40mA ON 1 SEL1 LIN OR RIN LOUT OR 40mA ROUT GND FIGURE 2. r TEST CIRCUIT ON SIGNAL GENERATOR 5 ISL54406 t < 20ns r t < 20ns f SWITCH INPUT OUT V SEL2 90% Repeat test for all switches. C capacitance. FIGURE 1. SWITCHING TIMES V DD 0.1µF SIGNAL GENERATOR V ...

Page 6

... SEL2 Waveform: Rising Edge @ 100ms after 0V to 1.5V DC Step Falling Edge @ 100ms before 1. Step *See Figures 18 and 19 20kΩ Power Supply Turn-On/Turn-Off Click and Pop Transient Test *See Figure 17 6 ISL54406 (Continued) 3.0V 0.1µF V SEL1 DD SEL2 LOUT CLICK ...

Page 7

... The discussion that follows will describe using the ISL54406 in the “Application Block Diagram” on page 7. LOGIC CONTROL The state of the ISL54406 device is determined by the logic level at the SEL1 and SEL2 pins. The part has four states or modes of operation. The Audio Playback Mode, Audio Mute Mode, Click and Pop Mode, and Shutdown Mode. Refer to “ ...

Page 8

... In a high impedance state, 4MΩ internal pull down resistors on the SEL1 and SEL2 pins will set the ISL54406 logic pins to “0”. This will put the switch in the SHDN state which turns all switches OFF and deactivates the Click and Pop circuitry which will minimize power supply currents and increase battery life ...

Page 9

... V (V) OUT FIGURE 7. ON-RESISTANCE vs SWITCH VOLTAGE vs SUPPLY VOLTAGE 0.068 R = 32Ω LOAD V = 0.707V LOAD RMS 0.066 0.064 0.062 0.060 0.058 0.056 20 200 FREQUENCY (Hz) FIGURE 9. THD+N vs SUPPLY VOLTAGE vs FREQUENCY 9 ISL54406 T = +25°C, Unless Otherwise Specified A 4 40mA OUT 3.8 3 2 3.0 3.2 DD 3.0 2 3.3 DD 2.6 2.4 2 ...

Page 10

... FREQUENCY (Hz) FIGURE 13. INSERTION LOSS -40 -60 -80 -100 -120 R = 32Ω -140 0. P-P P-P -160 20 100 200 500 1k FREQUENCY (Hz) FIGURE 15. CROSSTALK 10 ISL54406 T = +25°C, Unless Otherwise Specified (Continued) A 0.10 0.08 0.06 0.04 0.03 0.02 0.01 0.008 0.82 0.93 1.05 1. RMS -40 -60 -80 -100 -120 -140 -160 2k 10k 20k 20 1V/DIV V SEL1 = SEL2 = 0V ...

Page 11

... Typical Performance Curves SEL2 V INL V LIN 200mV/DIV V LOUT 200mV/DIV TIME (s) 100ms/DIV FIGURE 17. 20kΩ CLICK AND POP REDUCTION 11 ISL54406 T = +25°C, Unless Otherwise Specified (Continued) A 2V/DIV FIGURE 18. 32Ω CLICK AND POP REDUCTION SEL2 2V/DIV V INR V RIN 200mV/DIV V ROUT 200mV/DIV TIME (s) 100ms/DIV FN6578 ...

Page 12

... NX L PIN # BOTTOM VIEW C L (A1) NX (b) 5 SECTION "C-C" 2.20 1.00 1.00 0.60 0.50 1.80 0.20 0.40 10 LAND PATTERN 12 ISL54406 L10.1.8x1. LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE E SYMBOL 10X θ 0. ...

Page 13

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 13 ISL54406 L10.3x3A 0.10 C ...

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