參數(shù)資料
型號(hào)： LMC1992
廠商： National Semiconductor Corporation
英文描述： LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with Four-Channel Input-Selector
中文描述： LMC1992數(shù)控立體聲音調(diào)和音量電路四通道輸入選擇
文件頁(yè)數(shù)： 2/14頁(yè)
文件大?。?/td> 260K
代理商： LMC1992
Absolute Maximum Ratings
(Notes 1 and 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
a
b
GND)
Voltage at Any Pin
15V
GND
b
0.2V to V
a
a
0.2V
Input Current at Any Pin (Note 3)
5 mA
Package Input Current (Note 3)
20 mA
Power Dissipation (Note 4)
500 mW
125
§
C
Junction Temperature
Storage Temperature
b
65
§
C to
a
150
§
C
Lead Temperature
N Package, Soldering, 10 sec.
a
260
§
C
2000V
850V
ESD Susceptibility (Note 5)
Pins 9, 10, 11, 19, 20, 21
Operating Ratings
(Notes 1 and 2)
Temperature Range
LMC1992CCN
Supply Voltage Range (V
a
b
V
b
)
T
MIN
s
T
A
s
T
MAX
0
§
C
s
T
A
s
70
C
6V to 12V
Electrical Characteristics
The following specifications apply for V
a
e
8V, f
IN
e
1 kHz, input signal applied to
channel 1, volume
e
0 dB, bass
e
0 dB, treble
e
0 dB, and faders
e
0 dB unless otherwise specified. All limits T
A
e
T
J
e
25
§
C.
Symbol
Parameter
Conditions
Typical
(Note 6)
Limit
(Note 7)
Units
(Limit)
I
S
Supply Current
27.0
mA (max)
V
IN
Input Voltage
Clipping Level (1.0% THD),
Select Out (Pins 8, 22)
2.3
2.0
V
rms
(min)
V
OUT
Output Voltage
Clipping Level (1.0% THD),
Outputs (Pins 13, 14, 16, 17)
1.2
0.65
V
rms
(min)
THD
Total Harmonic Distortion
All Four Channels
Volume Attenuator at 0 dB, Input Level 0.3 V
rms
Volume Attenuator at
b
20 dB, Input Level 0.6 V
rms
0.15
0.03
0.3
0.1
% (max)
% (max)
E
nOUT
Output Noise
All Four Channels CCIR/ARM Filter, R
S
e
0
X
6.5
30.0
m
V
rms
(max)
E
nOUT
Output Noise
All Four Channels CCIR/ARM Filter, R
S
e
0
X
Volume Attenuator
e b
80 dB
5.0
20.0
m
V
rms
(max)
R
OUT
DC Output Impedance
Pins 8, 22
Pins 13, 14, 16, 17
100
80
150
120
X
(max)
X
(max)
R
IN
DC Input Impedance
Pins 4, 5, 6, 7, 23, 24, 25, 26
2
M
X
Volume Attenuator Range
Pins 16, 17; Volume Attenuation at
0101110100X (0 dB); (Absolute Gain)
01011000000 (80 dB); (Relative to Attenuation at
b
1.0
b
1.5
dB (max)
80.0
75.0
dB (min)
the 0 dB setting)
Volume Step Size
All Volume Attenuation Settings from 01011001010
(60 dB) to 0101110100X (0 dB) (Note 9)
2.0
0.7
4.3
dB (min)
dB (max)
Channel-to-Channel Volume
Tracking Error
Fader Attenuation from 1XXX000000
(40 dB) to 1XXX1010X (0 dB)
g
0.5
g
1.0
dB (max)
Fader Attenuation Range
Pins 16, 17; Fader Attenuation at
011XXX1010X (0 dB); (Absolute Gain)
011XXX00000 (40 dB); (Relative to Attenuation at
b
1.0
b
1.5
dB (max)
40
38.0
dB (min)
the 0 dB setting)
Fader Step Size
All Fader Attenuation Settings from 011XXX00000
(40 dB) to 011XXX1010X (0 dB) (Note 10)
2.0
1.0
4.5
dB (min)
dB (max)
2
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