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LM4985TM датащи(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали LM4985TM
подробное описание детали  Stereo 135mW Low Noise Headphone Amplifier with Selectable Capacitively Coupled or Output Capacitor-less (OCL) Output and Digitally Controlled (I2C) V
PDF  29 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4985TM датащи(HTML) 8 Page - National Semiconductor (TI)

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Electrical Characteristics V
DD = 2.5V (Notes 1, 2)
The following specifications apply for R
L =16
Ω, f = 1kHz, and C
B = 4.7µF unless otherwise specified. Limits apply to TA =
25˚C.
Symbol
Parameter
Conditions
LM4985
Units
(Limits)
Typ
(Note 6)
Limit
(Notes 7,
8)
I
DD
Quiescent Power Supply Current
V
IN = 0V, IOUT =0A
Single-Channel no load OCL
Single-Channel no load C-CUPL
Dual-Channel no load OCL
Dual-Channel no load C-CUPL
1.6
1
2.1
1.6
mA
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.1
µA
V
SDIH
Logic Voltage Input High
1.75
V (min)
V
SDIL
Logic Voltage Input Low
0.75
V (max)
P
O
Output Power
THD+N < 1%, f
IN = 1kHz
R
LOAD =16
Ω OCL
R
LOAD =16
Ω C-CUPL
R
LOAD =32
Ω OCL
R
LOAD =32
Ω C-CUPL
31
33
19
19
mW
THD+N
Total Harmonic Distortion + Noise
R
LOAD =16
Ω OCL, P
O = 26mW
R
LOAD =16
Ω C-CUPL, P
O = 20mW
R
LOAD =32
Ω OCL, P
O = 16mW
R
LOAD =32
Ω C-CUPL, P
O = 15mW
0.07
0.05
0.06
0.04
%
V
ON
Output Noise Voltage
V
IN = AC GND, AV = 0dB, A-weighted
10
µV
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mVp-p (Note 9)
f
IN = 217Hz sinewave
OCL
C-CUPL
75
59
dB
f
IN = 1kHz sinewave
OCL
C-CUPL
75
59
Xtalk
Channel-to-Channel Crosstalk
P
out = 20mW, OCL
R
LOAD =16
Ω
R
LOAD=32
Ω
50
55
dB
P
out = 20mW. C-CUPL
R
LOAD =16
Ω
R
LOAD=32
Ω
58
67
dB
T
WU
Wake Up Time from Shutdown
C
BYPASS = 4.7µF (Note 11)
WT1=0,WT0=0
OCL
C-CUPL
66
214
msec
WT1=0,WT0=1
OCL
C-CUPL
92
544
WT1=1,WT0=0
OCL
C-CUPL
145
1053
WT1=1,WT0=1
OCL
C-CUPL
250
2098
R
IN
Input Resistance
Stereo mode
Mono mode
20
10
k
Ω
A
VMIN
Minimum Gain
Code = 00000
–76
dB
www.national.com
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