LMC1983 National Semiconductor, LMC1983 Datasheet - Page 3

• Manufacturer Part Number: LMC1983
• Description: Digitally-Controlled Stereo Tone and Volume Circuit with Three Selectable Stereo Inputs
• Manufacturer: National Semiconductor

Symbol
f
V
V
V
V
PSSR
CLK
The following specifications apply for V
0 dB, treble = 0 dB, and loudness is off unless otherwise specified. All limits apply for T
IN(1)
IN(0)
OUT(1)
OUT(0)
Electrical Characteristics
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the deivce may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed speci-
fications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
Note 2: All voltages are specified with respect to ground.
Note 3: When the input voltage (V
limited to 5 mA or less. The 20 mA package input current limits the number of pins that can exceed the power supply voltages with 5 mA current limit to four.
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
+125˚C, and the typical junction-to-ambient thermal resistance, when board mounted, is 67˚C/W.
Channel-to-Channel
Tracking Error
Mute Attenuation
Bass Gain Range
Bass Tracking Error
Bass Step Size
Treble Gain Range
Treble Tracking Error
Treble Step Size
Frequency Response
Loudness
Signal-to-Noise Ratio
Channel Balance
Channel Separation
Input-Input Isolation
Power Supply Rejection
Ratio
Clock Frequency
Logic “1” Input Voltage
Logic “0” Input Voltage
Logic “1” Output Voltage
Logic “0” Output Voltage
Parameter
D
= (T
IN
) at any pin exceeds the power supply voltages (V
JMAX
− T
A
All Volume Attenuation Settings from
from
V
f
f
f
(Relative to Previous Level)
f
f
f
(Relative to Previous Level)
V
f
(Relative to Signal Amplitude at 1 kHz)
Volume Attenuator = 40 dB, Loudness
on (See Figure 5 )
Gain at 100 Hz (Referenced
Gain at 10 kHz (Referenced
V
Measured at 1 kHz, R
All Volume Settings
Input Pins 4, 25: Output Pins 13, 16;
V
470
V
Sinewave Applied to Pin 26
Pins 1, 27, 28 (IM Bus)
Pins 2, 3
Pins 1, 27, 28 (IM Bus)
Pins 2, 3
Pin 28 (IM Bus)
Pin 28 (IM Bus)
)/
+
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
+
0100010XXX100110 (76 dB) to
0100010XXX000000 (0 dB)
0100010XXX101XXX (80 dB) to
0100010XXX100111 (78 dB)
to Gain at 1 kHz)
to Gain at 1 kHz)
= 9V, f
JA
= 100 Hz, Pins 13, 16
= 100 Hz, Pins 13, 16
= 100 Hz, Pins 13, 16
= 10 kHz, Pins 13, 16
= 10 kHz, Pins 13, 16
= 10 kHz, Pins 13, 16
= 20 Hz − 20 kHz
= 9 V
Applied to Input 1 and Input 2;
= 1.0 V
= 1.0 V
= 1.0 V
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LMC1983CIN, T
(Continued)
to AC Ground on Unused Input
DC
IN
rms
rms
rms
; 200 mV
= 1 kHz, input signal (300 mV) applied to INPUT 1, volume = 0 dB, bass =
, A Weighted,
(Note 8)
rms
Conditions
S
, 100 Hz
= 470
3
IN
<
V
−
or V
IN
>
JMAX
V
+
) the absolute value of the current at that pin should be
,
JA
A
, and the ambient temperature T
= T
J
(Note 6)
= +25˚C.
Typical
±
±
±
±
11.5
105
±
±
2.0
2.0
6.5
0.2
5.0
1.3
2.9
0.4
1.2
0.4
95
80
95
32
0.1
0.1
0.1
0.1
12
12
(Note 7)
±
±
±
±
Limit
±
±
±
±
±
13.5
1.5
2.5
1.5
2.5
9.5
8.5
4.5
1.0
1.0
2.0
5.5
0.8
3.5
2.0
0.8
10.0
14.0
10.0
14.0
86
90
60
60
28
1.5
2.0
1.5
1.5
1.0
A
. The maximum
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MHz (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
V (max)
V (max)
V (max)
V (min)
V (min)
V (min)
(Limit)
Unit
JMAX
=