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參數(shù)資料
| 型號： | HWD2111 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode |
| 中文描述： | 雙105mW耳機放大器，具有數(shù)字音量控制和關(guān)斷模式 |
| 文件頁數(shù)： | 5/19頁 |
| 文件大?。?/td> | 1038K |
| 代理商： | HWD2111 |
Electrical Characteristics
(Notes 1, 8) (Continued)
The following specifications apply for V
DD
= 2.6V unless otherwise specified, limits apply to T
A
= 25C.
Symbol
Parameter
Conditions
HWD
21
11
Units
(Limits)
Typical
(Note 4)
75
Limit
(Note 5)
Shutdown Attenuation
Shutdown mode active
dB
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 1.5k
resistor.
Note 4:
Typical specifications are specified at +25C and represent the most likely parametric norm.
Note 5:
Tested limits are guaranteed to
CSMSC
’s 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 ExposedDAP soldered to an exposed 2in
2
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
Functional Description
1. C
i
This is the input coupling capacitor. It blocks the DC voltage at, and couples the input signal to, the
amplifier’s input terminals. C
i
also creates a highpass filter with the internal input resistor, R
i
, at f
c
=
1/(2
π
R
i
C
i
). The minimum value of R
i
is 33k
. Refer to the section,
Proper Selection of External
Components,
for an explanation of how to determine the value of C
i
.
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 C
B
.
This is the output coupling capacitor. It blocks the DC voltage at the amplifier’s output and it forms a
high pass filter with R
L
at f
O
= 1/(2
π
R
L
C
O
)
2. C
S
3. C
B
4. C
O
Typical Performance Characteristics
THD+N vs Frequency
THD+N vs Frequency
5
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