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LM4857 bảng dữ liệu(PDF) 10 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Stereo 1.2W Audio Sub-system
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LM4857 bảng dữ liệu(HTML) 10 Page - Texas Instruments

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LM4857
SNAS229I – OCTOBER 2003 – REVISED APRIL 2013
www.ti.com
Volume Control Electrical Characteristics
(1) (2)
The following specifications apply for VDD = 5.0V and VDD = 3.0V, unless otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
LM4857
Units
(Limits)
Typical(3)
Limits(4)(5)
maximum gain setting
6
5.5
dB (min)
6.5
dB (max)
Stereo Volume Control Range
minimum gain setting
-40.5
-41
dB (min)
-40
dB (max)
maximum gain setting
12
11.5
dB (min)
12.5
dB (max)
Mono Volume Control Range
minimum gain setting
-34.5
-35
dB (min)
-34
dB (max)
Volume Control Step Size
1.5
dB
Volume Control Step Size Error
+/-0.2
+/-0.5
dB (max)
Stereo Channel to Channel Gain
0.3
dB
Mismatch
Mode 12, Vin = 1VRMS
Mute Attenuation
Headphone
85
dB
Line Out
85
dB
maximum gain setting
33.5
25
k
Ω (min)
42
k
Ω (max)
LIN and RIN Input Impedance
minimum gain setting
100
75
k
Ω (min)
125
k
Ω (max)
MIN Input Impedance
maximum gain setting
20
15
k
Ω (min)
25
k
Ω (max)
minimum gain setting
98
73
k
Ω (min)
123
k
Ω (max)
(1)
All voltages are measured with respect to the GND pin unless otherwise specified.
(2)
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 specify specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which specify specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not specified for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3)
Typicals are measured at +25°C and represent the parametric norm.
(4)
Limits are ensured to AOQL (Average Outgoing Quality Level).
(5)
Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
10
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: LM4857


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