LMC1982 Datasheet, PDF (4/14 Pages) National Semiconductor (TI) – Digitally-Controlled Stereo Tone and Volume Circuit with Two Selectable Stereo Inputs

Electrical Characteristics (Continued)
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by T_JMAX, θ_JA, and the ambient temperature T_A. The maximum
allowable power dissipation is P_D = (T_JMAX − T_A)/θ_JA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LMC1982CIN, T_JMAX =
+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 kΩ resistor.
Note 6: Typicals are at T_J = +25˚C and represent the most likely parametric norm.
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_rms signal while the right inputs are grounded.
Typical Performance Characteristics
Supply Current
vs Supply Voltage
Output Voltage
vs Supply Voltage
THD vs
Load Impedance
THD vs
Load Impedance
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CCIR Output Noise
vs Volume Setting
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Channel Separation
vs Frequency
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THD vs V_IN
(V_OUT Constant)
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THD vs Frequency
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Mute Gain
vs Frequency
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