Electrical Characteristics
(Notes 4, 5)
Symbol
Parameter
(Continued)
The following specifications apply for V
CC
= +22V, V
EE
= −22V with R
L
= 8Ω unless otherwise specified. Limits apply for T
A
=
25˚C.
Conditions
LM1876
Typical
(Note 9)
A
VOL
(Note 2)
GBWP
e
IN
(Note 3)
SNR
Signal-to-Noise Ratio
Open Loop Voltage Gain
Gain Bandwidth Product
Input Noise
R
L
= 2 kΩ,
∆
V
O
= 20 V
f
O
= 100 kHz, V
IN
= 50 mVrms
IHF — A Weighting Filter
R
IN
= 600Ω (Input Referred)
P
O
= 1W, A — Weighted,
Measured at 1 kHz, R
S
= 25Ω
P
O
= 15W, A — Weighted
Measured at 1 kHz, R
S
= 25Ω
A
M
Standby
Pin
V
IL
V
IH
Mute pin
V
IL
V
IH
Mute Low Input Voltage
Mute High Input Voltage
Outputs Not Muted
Outputs Muted
2.0
0.8
2.5
V (max)
V (min)
Standby Low Input Voltage
Standby High Input Voltage
Not in Standby Mode
In Standby Mode
2.0
0.8
2.5
V (max)
V (min)
Mute Attenuation
Pin 6,11 at 2.5V
115
80
dB (min)
110
7.5
2.0
98
108
Limit
(Note 10)
90
5
8
dB (min)
MHz (min)
µV (max)
dB
dB
Units
(Limits)
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 func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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
JC
= 2˚C/W (junction to case) for the TF package and
θ
JC
= 1˚C/W for the T package. Refer to the section Determining the Correct Heat Sink in the Application In-
formation 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
EE
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 dif-
ferential between V
CC
and V
EE
must be greater than 14V.
Note 12:
The output dropout voltage, V
OD
, is the supply voltage minus the clipping voltage. Refer to the Clipping Voltage vs. Supply Voltage graph in the Typical Per-
formance Characteristics section.
Note 13:
For a 4Ω load, and with
±
20V supplies, the LM1876 can deliver typically 22W of continuous average output power with less than 0.1% (THD + N). With
supplies above
±
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
±
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
Application Information section.
3
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