HWD2111 Datasheet, PDF(5/19 Page) List of Unclassifed Manufacturers – Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode

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HWD2111 Datasheet, PDF (5/19 Pages) List of Unclassifed Manufacturers – Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode

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Electrical Characteristics (Notes 1, 8) (Continued)

The following specifications apply for VDD = 2.6V unless otherwise specified, limits apply to TA = 25ËC.

Symbol

Parameter

Conditions

HWD2111

Typical

Limit

(Note 4) (Note 5)

Shutdown Attenuation

Shutdown mode active

â75

Units

(Limits)

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.

Note 2: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and

test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may

degrade when the device is not operated under the listed test conditions.

Note 3: Human body model, 100pF discharged through a 1.5kâ¦ resistor.

Note 4: Typical specifications are specified at +25ËC and represent the most likely parametric norm.

Note 5: Tested limits are guaranteed to CSMSCâs AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are guaranteed by design, test,

or statistical analysis.

Note 6: : Machine Model ESD test is covered by specification EIAJ IC-121-1981. A 200pF cap is charged to the specified voltage, then discharged directly into the

IC with no external series resistor (resistance of discharge path must be under 50 Ohms).

Note 7: The LDA10A package has its ExposedâDAP soldered to an exposed 2in2 area of 1oz printed circuit board copper.

Note 8: All voltages are measured with respect to the ground pin, unless otherwise specified.

External Components Description

(Figure 1)

Components

1. Ci

2. CS

3. CB

4. CO

Functional Description

This is the input coupling capacitor. It blocks the DC voltage at, and couples the input signal to, the

amplifierâs input terminals. Ci also creates a highpass filter with the internal input resistor, Ri, at fc =

1/(2ÏRiCi). The minimum value of Ri is 33kâ¦. Refer to the section, Proper Selection of External

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

This is the supply bypass capacitor. It provides power supply filtering. Refer to the Application

Information section for proper placement and selection of the supply bypass capacitor.

This is the BYPASS pin capacitor. It provides half-supply filtering. Refer to the section, Proper

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

This is the output coupling capacitor. It blocks the DC voltage at the amplifierâs output and it forms a

high pass filter with RL at fO = 1/(2ÏR LCO)

Typical Performance Characteristics

THD+N vs Frequency

▷