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LM4934 bảng dữ liệu(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM4934
Giải thích chi tiết về linh kiện  3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line Level Outputs
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4934 bảng dữ liệu(HTML) 7 Page - National Semiconductor (TI)

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Audio Amplifier Electrical Characteristics AV
DD = 5.0V, DVDD = 3.3V (Notes 1,
2) (Continued)
The following specifications apply for the circuit shown in Figure 1 with all programmable gain set at 0dB, unless otherwise
specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4934
Units
(Limits)
Typical
(Note 6)
Limits
(Notes
7, 8)
PSRR
Power Supply Rejection Ratio
f = 217Hz; V
ripple = 200mVP-P
C
B = 2.2µF; See Table 3
Table 3
Xtalk
Crosstalk
Loudspeaker; P
O= 400mW
f = 1kHz
–86
dB
Headphone; P
O= 15mW
f = 1kHz; OCL
–56
dB
Headphone; P
O= 15mW
f = 1kHz, SE
–80
dB
T
WU
Wake-Up Time
C
B = 2.2µF, CD6 = 0
45
ms
C
B = 2.2µF, CD6 = 1
130
ms
Volume Control Electrical Characteristics (Notes 1, 2)
The following specifications apply for 3V
≤ AV
DD
≤ 5V and 2.7V ≤ DV
DD
≤ 4.0V, unless otherwise specified. Limits apply for T
A
= 25˚C.
Symbol
Parameter
Conditions
LM4934
Units
(Limits)
Typical
(Note 6)
Limits
(Notes
7, 8)
PGR
Stereo or Mono Analog Inputs
PreAmp Gain Setting Range
minimum gain setting
–6
–6.5
dB (min)
–5.5
dB (max)
maximum gain setting
15
15.5
dB (max)
14.5
dB (min)
VCR
Output Volume Control for Stereo
Speakers, Headphone Output, or
Mono Output Range
minimum gain setting, Vol = 00001
–56
–56.5
dB (min)
–55.5
dB (max)
maximum gain setting
5
4.5
dB (min)
5.5
dB (max)
∆A
CH-CH
Stereo Channel to Channel Gain
Mismatch
0.3
dB
A
MUTE
Mute Attenuation
V
in =1Vrms, Gain = 0dB
with load, Vol = 00000
Headphone
<-90
dB
Line Out
<-90
dB
R
INPUT
M
IN,LIN and RIN Input Impedance
23
18
k
Ω (min)
28
k
Ω (max)
www.national.com
7


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