LMC1982 National Semiconductor, LMC1982 Datasheet - Page 4

• Manufacturer Part Number: LMC1982
• Description: Digitally-Controlled Stereo Tone and Volume Circuit with Two Selectable Stereo Inputs
• Manufacturer: National Semiconductor

www.national.com
Electrical Characteristics
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.
Note 5: Human body model; 100 pF discharged through a 1.5 k
Note 6: Typicals are at T
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: The Input-Input Isolation is tested by driving one input and measuring the output when the undriven input are selected.
Note 9: The Volume Step Size is defined as the change in attenuation between any two adjacent volume attenuation settings. The nominal Volume Step Size is 2 dB.
Note 10: Enhanced Stereo Cross Coupling is a measure of the ratio between the undriven right channel output signal and the driven left channel output signal. It
is measured by driving the left inputs with a 300 mV
Typical Performance Characteristics
Supply Current
vs Supply Voltage
THD vs
Load Impedance
THD vs V
(V
OUT
Constant)
IN
J
= +25˚C and represent the most likely parametric norm.
D
= (T
DS011028-19
DS011028-13
DS011028-16
JMAX
− T
A
)/
JA
rms
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LMC1982CIN, T
(Continued)
signal while the right inputs are grounded.
Output Voltage
vs Supply Voltage
CCIR Output Noise
vs Volume Setting
THD vs Frequency
resistor.
4
DS011028-14
DS011028-17
DS011028-20
JMAX
,
JA
THD vs
Load Impedance
Channel Separation
vs Frequency
Mute Gain
vs Frequency
, and the ambient temperature T
A
. The maximum
DS011028-15
DS011028-18
DS011028-21
JMAX
=