HWD2119 Datasheet, PDF(4/21 Page) List of Unclassifed Manufacturers – 350mWAudio Power Amplifier with Shutdown Mode

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HWD2119 Datasheet, PDF (4/21 Pages) List of Unclassifed Manufacturers – 350mWAudio Power Amplifier with Shutdown Mode

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Electrical Characteristics VDD = 3V (Notes 2, 3)

The following specifications apply for VDD = 3V and RL = 16â¦ load unless otherwise stated. Limits apply to TA =

25ËC. (Continued)

Note 1: See AN-450 âSurface Mounting and their Effects on Product Reliabilityâ for other methods of soldering surface mount devices.

Note 2: All voltages are measured with respect to the ground pin, unless otherwise specified.

Note 3: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which

guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit

is given. However, the typical value is a good indication of deviceâs performance.

Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, Î¸JA, and the ambient temperature TA. The maximum

allowable power dissipation is PDMAX = (TJMAXâTA)/Î¸JA. For the HWD2119, TJMAX = 150ËC and the typical junction-to-ambient thermal resistance (Î¸JA) when board

mounted is 210ËC/W for the MSOP package and 170ËC/W for the SOP package.

Note 5: Human body model, 100pF discharged through a 1.5 kâ¦ resistor.

Note 6: Machine Model, 220pFâ240pF capacitor is discharged through all pins.

Note 7: Typical specifications are specified at 25ËC and represent the parametric norm.

Note 8: Tested limits are guaranteed to Nationalâs AOQL (Average Outgoing Quality Level).

Note 9: Datasheet min/max specification limits are guaranteed by designs, test, or statistical analysis.

Note 10: The given Î¸JA is for an HWD2119 package in an LDA08B with the Exposed-DAP soldered to a printed circuit board copper pad with an area equivalent to

that of the Exposed-DAP itself. The Exposed-DAP of the LDA08B package should be electrically connected to GND or an electrically isolated copper area.

Note 11: The given Î¸JA is for an HWD2119 package in an LDA08B with the Exposed-DAP not soldered to any printed circuit board copper.

Note 12: The shutdown pin (pin1) should be driven as close as possible to VDD for minimum current in Shutdown Mode.

External Components Description (Figure 1)

Components

Functional Description

Combined with Rf, this inverting input resistor sets the closed-loop gain. Ri also forms a high pass filter with

Ci at fc = 1/(2ÏRiCi).

This input coupling capacitor blocks DC voltage at the amplifierâs terminals. Combined with Ri, it creates a

high pass filter with Ri at fc = 1/(2ÏRiCi). Refer to the section, Proper Selection of External Components

for an explanation of how to determine the value of Ci.

Combined with Ri, this is the feedback resistor that sets the closed-loop gain: Av = 2(RF/Ri).

This is the power supply bypass capacitor that filters the voltage applied to the power supply pin. Refer to

the Application Information section for proper placement and selection of Cs.

This is the bypass pin capacitor that filters the voltage at the BYPASS pin. Refer to the section, Proper

Selection of External Components, for information concerning proper placement and selection of CB.

Typical Performance Characteristics

THD+N vs Frequency

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