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LM4985TM датащи(PDF) 7 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) 7 Page - National Semiconductor (TI)

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Electrical Characteristics V
DD = 3.6V (Notes 1, 2) (Continued)
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)
THD+N
Total Harmonic Distortion + Noise
R
LOAD =16
Ω OCL, P
O = 60mW
R
LOAD =16
Ω C-CUPL, P
O = 60mW
R
LOAD =32
Ω OCL, P
O = 33mW
R
LOAD =32
Ω C-CUPL, P
O = 38mW
0.06
0.03
0.03
0.03
%
V
ON
Output Noise Voltage
V
IN = AC GND, AV = 0dB, A-weighted
15
µV
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mVp-p (Note 9)
f
IN = 217Hz sinewave
OCL
C-CUPL
77
63
55
dB (min)
f
IN = 1kHz sinewave
OCL
C-CUPL
76
62
57
Xtalk
Channel-to-Channel Crosstalk
P
out = 40mW. OCL
R
LOAD =16
Ω
R
LOAD=32
Ω
51
56
dB
P
out = 50mW. C-CUPL
R
LOAD =16
Ω
R
LOAD=32
Ω
58
69
dB
T
WU
Wake Up Time from Shutdown
C
BYPASS= 4.7µF (Note 11)
WT1=0,WT0=0
OCL
C-CUPL
66
222
93
msec
WT1=0,WT0=1
OCL
C-CUPL
92
405
WT1=1,WT0=0
OCL
C-CUPL
143
774
WT1 = 1, WT0 =1
OCL
C-CUPL
246
1532
R
IN
Input Resistance
Stereo mode
Mono mode
20
10
k
Ω
A
VMIN
Minimum Gain
Code = 00000
–76
–72
dB (max)
A
VMAX
Maximum Gain
Code = 11111
18
17
dB (min)
∆A
V
Gain Accuracy per Step
18dB
≥ A
V
≥–44dB
–44dB
≥ A
V > –76dB
± 0.5
± 1.0
± 1.0
± 2.0
dB
V
OS
Output Offset Voltage
OCL
R
LOAD =32
Ω
V
IN =ACGND
2.0
20
mV (max)
www.national.com
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