LM4950TS National Semiconductor, LM4950TS Datasheet - Page 4

• Manufacturer Part Number: LM4950TS
• Description: Audio Power Amplifier IC
• Manufacturer: National Semiconductor

Specifications of LM4950TS

• Amplifier Case Style: TO-220
• No. Of Pins: 9
• Peak Reflow Compatible (260 C): No
• Termination Type: Through Hole
• Leaded Process Compatible: No
• Package / Case: 9-TO-220
• Operational Class: Class-AB
• Audio Amplifier Function: Speaker
• Input Offset Voltage: 30@12VmV
• Total Harmonic Distortion: 0.05@4Ohm@2.5W%
• Single Supply Voltage (typ): 12/15V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 70dB
• Single Supply Voltage (min): 9.6V
• Single Supply Voltage (max): 16V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 9 +Tab
• Package Type: TO-263
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Electrical Characteristics V
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9: Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for minimum shutdown
current.
External Components Description
1. R
2. C
3. R
4. C
5. C
Components
IN
IN
F
S
BYPASS
This is the inverting input resistance that, along with R
and input capacitance C
This is the input coupling capacitor. It blocks DC voltage at the amplifier’s inverting input. C
create a highpass filter. The filter’s cutoff frequency is f
EXTERNAL COMPONENTS, for an explanation of determining C
This is the feedback resistance that, along with R
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about
properly placing, and selecting the value of, this capacitor.
This capacitor filters the half-supply voltage present on the BYPASS pin. Refer to the Application section,
SELECTING EXTERNAL COMPONENTS, for information about properly placing, and selecting the
value of, this capacitor.
FIGURE 2. Typical Stereo Single-Ended (SE) Audio Amplifier Application Circuit
IN
DD
form a high pass filter. The filter’s cutoff frequency is f
= 12V
Refer to (Figure 1.)
Functional Description
(Notes 1, 2) (Continued)
4
i
, sets closed-loop gain.
F
C
, sets the closed-loop gain. Input resistance R
= 1/(2πR
IN
IN
’s value.
C
IN
). Refer to the SELECTING
c
= 1/(2πR
IN
IN
20047072
C
and R
IN
).
IN
IN