DIO1553WL9

Overview

The DIO1553WL9 is a dual single-pole single-throw (SPST) audio switch manufactured by Dioo Microcircuits. It utilizes depletion technology to enable signal conduction when VCC is below 0.2V and isolation when VCC is present. The device supports a switch voltage range of -1.5V to 1.5V with a typical on-resistance of 0.35Ω. Key performance metrics include a total harmonic distortion plus noise of -103dB, an off-isolation of -88dB, and a bandwidth of 340MHz. It operates within a supply voltage range of 0V to 3V and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Depletion technology enables automatic signal conduction in the absence of power supply voltage.
• Configurable switching via dedicated select pins for independent channel control.
• High-fidelity audio performance characterized by ultra-low total harmonic distortion plus noise.
• Low on-resistance ensures minimal signal attenuation during conduction.

Applications

• Smartphones
• Tablets
• Ultrabooks

Procurement Notes

Verify the ordering part number DIO1553WL9 against official Dioo Microcircuits documentation to confirm package type WLCSP-9 and tape & reel packaging quantity of 3000 units. Ensure compatibility with RoHS standards and check for any specific moisture sensitivity level requirements before procurement.

Selection Notes

Select this component for applications requiring low-power audio signal routing where fail-safe conduction without power is necessary. Consider the WLCSP-9 package size for space-constrained designs. Verify that the required switch voltage swing falls within the -1.5V to 1.5V operational range.

Part Context

The DIO1553WL9 belongs to the DIO1553 series of analog switches from Dioo Microcircuits. This series focuses on high-performance audio switching solutions utilizing proprietary depletion technology. The WL9 suffix specifically denotes the WLCSP-9 package configuration with a 3000-unit tape and reel shipping format.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet or verified source material. Consult Dioo Microcircuits directly for potential cross-references or alternative components within their portfolio.

FAQ

How does the DIO1553 handle signals when VCC is not powered?

When VCC is below 0.2V, the depletion technology allows the device to conduct signals automatically, functioning as a normally closed switch.

What is the maximum DC switch I/O voltage supported?

The absolute maximum rating for DC switch I/O voltage is 2V when conducting and up to VCC when isolated. The recommended operating condition specifies a range of -1.5V to 1.5V.

What is the typical quiescent supply current when the switch is conducting?

The typical quiescent supply current (ICC) is 0.2µA when the switch is conducting and select pins are at 0V or floating.