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PDF HWD2108 Data sheet ( Hoja de datos )
| Número de pieza | HWD2108 | |
| Descripción | Dual 105mW Headphone Amplifier | |
| Fabricantes | CSMSC | |
| Logotipo |  |
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HWD2108 Audio Power Amplifier
Dual 105 mW Headphone Amplifier
General Description
Key Specifications
The HWD2108 is a dual audio power amplifier capable of n THD+N at 1kHz at 105mW continuous average output
delivering 105mW per channel of continuous average power
power into 16Ω
0.1% (typ)
into a 16Ω load with 0.1% (THD+N) from a 5V power supply. n THD+N at 1kHz at 70mW continuous average output
audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components using surface mount packaging. Since
power into 32Ω
0.1% (typ)
n Output power at 0.1% THD+N at 1kHz into 32Ω 70mW
(typ)
the HWD2108 does not require bootstrap capacitors or snub-
ber networks, it is optimally suited for low-power portable Features
systems.
n LLP, MSOP, and SOP surface mount packaging
The unity-gain stable HWD2108 can be configured by external n Switch on/off click suppression
gain-setting resistors.
n Excellent power supply ripple rejection
n Unity-gain stable
n Minimum external components
Applications
n Headphone Amplifier
n Personal Computers
n Portable electronic devices
Typical Application
*Refer to the Application Information Section for information concerning proper selection of the input and output coupling capacitors.
FIGURE 1. Typical Audio Amplifier Application Circuit
1
1 page  
External Components Description (Figure 1)
Components
1. Ri
2. Ci
3. Rf
4. CS
5. CB
6. CO
7. RB
Functional Description
The inverting input resistance, along with Rf, set the closed-loop gain. Ri, along with Ci, form a high
pass filter with fc = 1/(2πRiCi).
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. Ci, along with Ri,
create a highpass filter with fC = 1/(2πRiCi). Refer to the section, Selecting Proper External
Components, for an explanation of determining the value of Ci.
The feedback resistance, along with Ri, set closed-loop gain.
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 half-supply bypass pin capacitor. It provides half-supply filtering. Refer to the section,
Selecting Proper External Components, for information concerning proper placement and selection
of CB.
This is the output coupling capacitor. It blocks the DC voltage at the amplifier’s output and forms a high
pass filter with RL at fO = 1/(2πRLCO)
This is the resistor which forms a voltage divider that provides 1/2 VDD to the non-inverting input of the
amplifier.
Typical Performance
Characteristics
THD+N vs Frequency
THD+N vs Frequency
THD+N vs Frequency
THD+N vs Frequency
5
5 Page 
Typical Performance Characteristics (Continued)
Open Loop
Frequency Response
Open Loop
Frequency Response
Supply Current vs
Supply Voltage
Frequency Response vs
Output Capacitor Size
Frequency Response vs
Output Capacitor Size
Frequency Response vs
Output Capacitor Size
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet HWD2108.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HWD2108 | Dual 105mW Headphone Amplifier | CSMSC |
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