isl54405 Intersil Corporation, isl54405 Datasheet

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isl54405

Manufacturer Part Number
isl54405
Description
Cd/mp3 Quality Stereo 2 1 Multiplexer With Click And Pop Elimination
Manufacturer
Intersil Corporation
Datasheet

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CD/MP3 Quality Stereo 2:1 Multiplexer
with Click and Pop Elimination
The Intersil ISL54405 is a single supply, bidirectional, dual
single-pole/double-throw (SPDT) ultra low distortion, high
OFF-Isolation analog switch that can pass analog signals that
are positive and negative with respect to ground. It is primarily
targeted at consumer and professional audio switching
applications such as Computer Sound Cards and Home
Theater products. The inputs can accommodate ground
referenced signals up to 2V
3.3V or 5V DC supply. The digital logic inputs are 1.8V
logic-compatible when using a single 3.3V or 5V supply. It can
be used in both AC or DC coupled ground referenced
applications.
The ISL54405 features a soft-switch feature and click/pop
circuitry at each signal pin that eliminates clicks and pops
associated with power-up/down conditions of the preceding
amplifier outputs.
With -106dB THD+N performance with a 2V
20kΩ load, superior signal muting, high PSRR and very flat
frequency response the ISL54405 meets the exacting
requirements of consumer and professional audio engineers.
The ISL54405 is available in 16 Ld TSSOP, 16 Ld 3mmx3mm
TQFN, and 16 Ld 2.6mmx1.8mm µTQFN packages. Its
specified for operation over the -40°C to +85°C temperature
range.
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
• Application Note AN557 “Recommended Test Procedures
THD+N, 2V
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
for Analog Switches”
OFF-Isolation (MUTE)
Number of Switches
Insertion Loss
Switch Type
Packages
RMS
TABLE 1. FEATURES AT A GLANCE
, 20k
Ω
Load
RMS
®
1
16 Ld TSSOP, 16 Ld 3x3 TQFN,
while operating from a single
16 Ld 2.6x1.8 µTQFN
SPDT or 2 to 1 MUX
Data Sheet
ISL54405
±0.01dB
-106dB
125dB
RMS
2
signal into
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Clickless Audio Switching
• 2V
• -106dB THD+N into 20kΩ Load @ 2V
• -108dB THD+N into 32Ω Load @ 3.9mW
• Signal to Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >124dBV
• ±0.01dB Insertion Loss at 1kHz, 20kΩ Load
• ±0.007dB Gain Variation 20Hz to 20kHz
• 125dB Signal Muting into 20kΩ Load
• 90dB PSRR 20Hz to 20kHz
• Single Supply Operation . . . . . . . . . . . . . . . . . . . . 3.3V or 5V
• Available in 16 Ld TSSOP, 16 Ld TQFN, and 16 Ld
• Pb-Free (RoHS Compliant)
Applications
• Computer Sound Cards
• Home Theater Audio Products
• SACD/DVD Audio
• DVD Player Audio Output Switching
• Headsets for MP3/Cellphone Switching
• Hi-Fi Audio Switching Application
Block Diagram
For 5V operation connect the 5V_Supply pin to 5V and float the
VDD pin. For 3.3V operation connect the VDD pin to 3.3V and float
the 5V_Supply pin.
DIR_SEL
AC/DC
RMS
MUTE
SEL
All other trademarks mentioned are the property of their respective owners.
R
June 5, 2008
L
Signal Switching from 3.3V or 5V Supply
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
CLICK/POP
5V_Supply
ISL54405
CONTROL
LOGIC
AND
GND
RMS
ISL54405
VDD
FN6699.1
CAP_SS
L1
R1
R2
L2
µ
TQFN

Related parts for isl54405

isl54405 Summary of contents

Page 1

... PSRR and very flat frequency response the ISL54405 meets the exacting requirements of consumer and professional audio engineers. The ISL54405 is available TSSOP 3mmx3mm TQFN, and 16 Ld 2.6mmx1.8mm µTQFN packages. Its specified for operation over the -40°C to +85°C temperature range ...

Page 2

... Pinouts (Note 1) ISL54405 (16 LD µTQFN) TOP VIEW MUTE SEL NOTE: 1. See Page 1 for ISL54405 Block Diagram. 2 ISL54405 MUTE SEL ISL54405 (16 LD TSSOP) TOP VIEW 5V_Supply 1 16 AC/ MUTE ...

Page 3

... Signal Mute Control Pin Ordering Information PART NUMBER PART MARKING ISL54405IVZ 54405 IVZ (Note 2) ISL54405IVZ-T* 54405 IVZ (Note 2) ISL54405IRTZ (Note 2) 05TZ ISL54405IRTZ-T* 05TZ (Note 2) ISL54405IRUZ-T* GAD (Note 3) *Please refer to TB347 for details on reel specifications. NOTES: 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 4

... LOAD V = 0.707V SIGNAL R = 32Ω LOAD SNR f = 20Hz to 20kHz, A-weighted Filter, Inputs grounded ISL54405 Thermal Information Thermal Resistance (Typical TSSOP Package (Note TQFN Package (Notes 6, 7 0.3V µTQFN Package (Note 0.3V Maximum Junction Temperature (Plastic Package +150°C DD Maximum Storage Temperature Range . . . . . . . . . . . -65° ...

Page 5

... C (See Figure 6) OFF f = 1MHz Capacitance, C COM(ON) POWER SUPPLY CHARACTERISTICS Power Supply Range, VDD 5V_Supply = Float Power Supply Range Float DD 5V_Supply 5 ISL54405 Test Conditions +3.0V to +3.6V, GND = 0V Float, V 5V_SUPPLY SIGNAL 1.4V, V SELH MUTEH SELL Unless Otherwise Specified. (Continued) SUPPL TEST CONDITIONS = 20kΩ ...

Page 6

... SWITCH INPUT 90% SWITCH OUTPUT Logic input waveform is inverted for switches that have the opposite logic sense. FIGURE 1A. MEASUREMENT POINTS 6 ISL54405 Test Conditions +3.0V to +3.6V, GND = 0V Float 5V_SUPPLY SIGNAL 1.4V, V SELH MUTEH SELL Unless Otherwise Specified. (Continued) ...

Page 7

... ANALYZER GND R L Signal direction through switch is reversed, worst case values are recorded. Repeat test for all switches. FIGURE 5. CROSSTALK TEST CIRCUIT 7 ISL54405 (Continued) FIGURE 1. SWITCHING TIMES V NX 90% t LOGIC D INPUT Repeat test for all switches. C capacitance. ...

Page 8

... The RMS used to route a single stereo source to either the front or back panel line outs of the computer sound card. In the lower block diagram the ISL54405 is being used to multiplex two stereo sources to a single line out of the computer sound card. SOFT-START CAPACITOR CAP_SS 0.1µ ...

Page 9

... ISL54405 Supply Voltage, Signal Amplitude, Grounding The power supply connected at VDD or the 5V_SUPPLY pin , provides power to the ISL54405 part. The ISL54405 single supply device that was designed to be operated with a 3.3V ±10% DC supply connected at the VDD pin ±10% DC supply connected at the 5V_SUPPLY pin. ...

Page 10

... VDD pin or 4.5V to 5.5V at the 5V_SUPPLY pin. This allows control via 1. SEL, MUTE CONTROL PINS TURN-ON TIME The state of the SPDT switches of the ISL54405 device is 65µs determined by the voltage at the MUTE pin and the SEL pin. 30ms The SEL control pin is only active when MUTE is logic “0”. ...

Page 11

... Proper elimination of a click/pop transient at the speaker load while powering up or down of the audio driver requires that the ISL54405 have its C/P shunts activated on the source side of the switch and then placed in Mute mode. This allows the transient generated by the audio drivers to be discharged through the Click and Pop shunt circuitry ...

Page 12

... DIODE OPTIONAL PROTECTION RESISTOR High-Frequency Performance In 50Ω systems, the ISL54405 has a -3dB bandwidth of 230MHz (see Figure 29). The frequency response is very consistent over varying analog signal levels. An OFF-switch acts like a capacitor and passes higher frequencies with less attenuation, resulting in signal feedthrough from a switch’s input to its output. Off-Isolation ...

Page 13

... RMS -100 -105 -110 -115 -120 -125 -130 -135 -140 -145 -150 20 50 100 200 500 1k FREQUENCY (Hz) FIGURE 13. CHANNEL-TO-CHANNEL CROSSTALK 13 ISL54405 T = +25°C, Unless Otherwise Specified 100 110 120 130 140 150 160 170 FIGURE 10. OFF-ISOLATION, 2V -80 ...

Page 14

... FREQUENCY (Hz) FIGURE 19. THD+N vs SIGNAL LEVELS vs FREQUENCY 14 ISL54405 T = +25°C, Unless Otherwise Specified (Continued) A 0.020 20kΩ LOAD 0.015 VSIGNAL = 2V RMS RELATIVE TO 1kHz 0.010 0.005 -0.005 -0.010 -0.015 -0 ...

Page 15

... L 200mV/DIV 200mV/DIV OUT -6 -7 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 TIME (s) 100ms/DIV FIGURE 25. 20kΩ AC COUPLED CLICK/POP REDUCTION 15 ISL54405 T = +25°C, Unless Otherwise Specified (Continued) A 0.00100 0.00095 2V RMS 0.00090 0.00085 1.9V 0.00080 RMS 0.00075 0.00070 TO 1.8V RMS 0.00065 0.00060 0.00055 0.00050 0.00045 0.00040 ...

Page 16

... FIGURE 27. SOFT-START (0.1µF) CLICK/POP REDUCTION FREQUENCY (MHz) FIGURE 29. FREQUENCY RESPONSE Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 3376 PROCESS: Submicron CMOS 16 ISL54405 T = +25°C, Unless Otherwise Specified (Continued -20 -40 -60 V CAP_SS = 0.05µF -80 -100 -80 40 ...

Page 17

... Minimum space between protrusion and adjacent lead is 0.07mm (0.0027 inch). 10. Controlling dimension: MILLIMETER. Converted inch dimen- sions are not necessarily exact. (Angles in degrees) 17 ISL54405 M16.173 16 LEAD THIN SHRINK SMALL OUTLINE PLASTIC PACKAGE ...

Page 18

... PIN # (DATUM B) (DATUM A) BOTTOM VIEW C L (A1 SECTION "C-C" 3.00 1.80 1.40 2.20 0.90 0.20 0.50 0.40 10 LAND PATTERN 18 ISL54405 L16.2.6x1. LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE SYMBOL θ NOTES Dimensioning and tolerancing conform to ASME Y14.5-1994. ...

Page 19

... 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 19 ISL54405 L16.3x3A C A ...

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