Datasheet
LM4940
www.ti.com
SNAS219C –OCTOBER 2003–REVISED MAY 2013
ABSOLUTE MAXIMUM RATINGS
(1)(2)(3)
Supply Voltage (pin 6, referenced to GND, pins 4 and 5) 18.0V
Storage Temperature −65°C to +150°C
Input Voltage Pins 3 and 7 −0.3V to V
DD
+ 0.3V
Pins 1, 2, 8, and 9 −0.3V to 9.5V
Power Dissipation
(4)
Internally limited
ESD Susceptibility
(5)
2000V
ESD Susceptibility
(6)
200V
Junction Temperature 150°C
Thermal Resistance θ
JC
(KTW) 4°C/W
θ
JA
(KTW)
(4)
20°C/W
θ
JC
(NEC) 4°C/W
θ
JA
(NEC)
(4)
20°C/W
(1) All voltages are measured with respect to the GND pin, unless otherwise specified.
(2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure performance limits. This assumes that the device is within the Operating
Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device
performance.
(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(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
DMAX
= (T
JMAX
− T
A
) / θ
JA
or the given in Absolute Maximum Ratings, whichever is
lower. For the LM4940 typical application (shown in Figure 1) with V
DD
= 12V, R
L
= 4Ω stereo operation the total power dissipation is
3.65W. θ
JA
= 20°C/W for both DDPAK and TO–220 packages mounted to 16in
2
heatsink surface area.
(5) Human body model, 100pF discharged through a 1.5kΩ resistor.
(6) Machine Model, 220pF–240pF discharged through all pins.
OPERATING RATINGS
Temperature Range (T
MIN
≤ T
A
≤ T
MAX
) −40°C ≤ T
A
≤ 85°C
Supply Voltage 10V ≤ V
DD
≤ 16V
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