LM1876T National Semiconductor, LM1876T Datasheet - Page 4

• Manufacturer Part Number: LM1876T
• Manufacturer: National Semiconductor

Specifications of LM1876T

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 22x2@4OhmW
• Audio Amplifier Function: Speaker
• Input Offset Voltage: 15@±22VmV
• Input Bias Current: 500nA
• Total Harmonic Distortion: 0.08@8Ohm@30W%
• Single Supply Voltage (typ): 24/28V
• Dual Supply Voltage (typ): ±12/±15/±18/±24V
• Power Supply Requirement: Single/Dual
• Power Dissipation: 62.5W
• Unity Gain Bandwidth Product (typ): 7.5MHz
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 115dB
• Single Supply Voltage (min): 20V
• Single Supply Voltage (max): 64V
• Dual Supply Voltage (min): ±10V
• Dual Supply Voltage (max): ±32V
• Operating Temp Range: -20C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 15 +Tab
• Package Type: TO-220
• Lead Free Status / Rohs Status: Not Compliant

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CMRR
(Note 2)
A
(Note 2)
GBWP
e
(Note 3)
SNR
A
Standby
Pin
Mute pin
IN
VOL
M
Symbol
Electrical Characteristics
The following specifications apply for V
25˚C.
V
V
V
V
Note 1: Operation is guaranteed up to 64V, however, distortion may be introduced from SPiKe Protection Circuitry if proper thermal considerations are not taken
into account. Refer to the Application Information section for a complete explanation.
Note 2: DC Electrical Test; Refer to Test Circuit # 1.
Note 3: AC Electrical Test; Refer to Test Circuit # 2.
Note 4: All voltages are measured with respect to the GND pins (5, 10), unless otherwise specified.
Note 5: 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 guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 6: For operating at case temperatures above 25˚C, the device must be derated based on a 150˚C maximum junction temperature and a thermal resistance
of θ
Information section.
Note 7: Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 8: The operating junction temperature maximum is 150˚C, however, the instantaneous Safe Operating Area temperature is 250˚C.
Note 9: Typicals are measured at 25˚C and represent the parametric norm.
Note 10: Limits are guarantees that all parts are tested in production to meet the stated values.
Note 11: V
differential between V
Note 12: The output dropout voltage, V
Performance Characteristics section.
Note 13: For a 4Ω load, and with
supplies above
Application Information section.
±
20V will only increase the internal power dissipation, not the possible output power. Increased power dissipation will require a larger heat sink as explained in the
IL
IH
IL
IH
JC
= 2˚C/W (junction to case) for the TF package and θ
EE
Common Mode Rejection Ratio
Open Loop Voltage Gain
Gain Bandwidth Product
Input Noise
Signal-to-Noise Ratio
Mute Attenuation
Standby Low Input Voltage
Standby High Input Voltage
Mute Low Input Voltage
Mute High Input Voltage
must have at least −9V at its pin with reference to ground in order for the under-voltage protection circuitry to be disabled. In addition, the voltage
±
20V, the LM1876 cannot deliver more than 22W into a 4Ω due to current limiting of the output transistors. Thus, increasing the power supply above
CC
and V
Parameter
EE
must be greater than 14V.
±
20V supplies, the LM1876 can deliver typically 22W of continuous average output power with less than 0.1% (THD + N). With
OD
, is the supply voltage minus the clipping voltage. Refer to the Clipping Voltage vs. Supply Voltage graph in the Typical
CC
= +22V, V
(Notes 4, 5) (Continued)
V
V
R
f
IHF — A Weighting Filter
R
P
Measured at 1 kHz, R
P
Measured at 1 kHz, R
Pin 6,11 at 2.5V
Not in Standby Mode
In Standby Mode
Outputs Not Muted
Outputs Muted
O
JC
CC
CM
L
IN
O
O
= 100 kHz, V
= 1˚C/W for the T package. Refer to the section Determining the Correct Heat Sink in the Application
= 2 kΩ, ∆ V
= 1W, A — Weighted,
= 15W, A — Weighted
= 600Ω (Input Referred)
= 35V to 10V, V
= 10V to −10V, I
EE
= −22V with R
Conditions
O
IN
= 20 V
4
= 50 mVrms
EE
O
S
S
= 0 mA
= 25Ω
= 25Ω
= −10V to −35V,
L
= 8Ω unless otherwise specified. Limits apply for T
(Note 9)
Typical
110
110
108
115
7.5
2.0
2.0
2.0
98
LM1876
(Note 10)
Limit
0.8
2.5
0.8
2.5
80
90
80
5
8
MHz (min)
µV (max)
dB (min)
dB (min)
dB (min)
(Limits)
V (max)
V (max)
V (min)
V (min)
Units
dB
dB
A
=