Low THD+N Stereo SPDTSwitch with Click and PopElimination

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Overview

The NLAS54405 is a single supply, bidirectional, dual single−pole /double−throw (SPDT) ultra-low distortion, high OFF−Isolationanalog switch that can pass analog signals that are positive andnegative with respect to ground. It is primarily targeted at consumerand professional audio switching applications such as computer soundcards and home theater products. The inputs can accommodate groundreferenced signals up to 2.3 VRMS while operating from a single 3.3 Vor 5 V DC supply. The digital logic inputs are 1.8 V logic−compatiblewhen using a single 3.3 V or 5 V supply. It can be used in both AC− orDC−coupled ground-referenced applications.The NLAS54405 has a soft−switch feature and click/pop circuitry ateach signal pin that eliminates clicks and pops associated withpower−up/down conditions of the preceding amplifier outputs.With −116 dB THD+N performance with a 2.3 VRMS signal into20 k load, superior signal muting, high PSRR and very flatfrequency response, the NLAS54405 meets the exacting requirementsof consumer and professional audio engineers.

  • Dual SPDT Switch or 2−to−1 MUX
  • Clickless Audio Switching
  • 2.3 VRMS Signal Switching from 3.3 V or 5 V Supply
  • • −116 dB THD+N into 20 k Load at 2.3 VRMS
  • −116 dB THD+N into 32 Load at 3.9 mW
  • Signal to Noise Ratio: > 124 dBV
  • ±0.01 dB Insertion Loss at 1 kHz, 20 k Load
  • ±0.007 dB Gain Variation 20 Hz to 20 kHz
  • 125 dB Signal Muting into 20 k Load
  • 90 dB PSRR 20 Hz to 20 kHz
  • Single Supply Operation: 3.3 V or 5 V
  • 16−Lead WQFN Package, 1.8 mm x 2.6 mm
  • This Device is Pb−Free, Halogen Free/BFR Free and is RoHSCompliant

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NLAS54405MT2TBG

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Pb

A

H

P

QFN-16

1

260

REEL

3000

N

2

4

SPDT

65

2.5

3

3.6

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