Datasheet

LM1876
SNAS097C –MAY 1999–REVISED APRIL 2013 www.ti.com
Electrical Characteristics
(1)(2)
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.
Symbol Parameter Conditions LM1876 Units
(Limits)
Typical
(3
Limit
(4)
)
|V
CC
| + Power Supply Voltage
(5)
GND − V
EE
≥ 9V 20 V (min)
|V
EE
| 64 V (max)
P
O
(6)
Output Power THD + N = 0.1% (max),
(Continuous Average) f = 1 kHz
|V
CC
| = |V
EE
| = 22V, R
L
= 8Ω 20 15 W/ch (min)
|V
CC
| = |V
EE
| = 20V, R
L
= 4Ω
(7)
22 15 W/ch (min)
THD + N Total Harmonic Distortion 15 W/ch, R
L
= 8Ω 0.08 %
Plus Noise 15 W/ch, R
L
= 4Ω, |V
CC
| = |V
EE
| = 20V 0.1 %
20 Hz ≤ f ≤ 20 kHz, A
V
= 26 dB
X
talk
Channel Separation f = 1 kHz, V
O
= 10.9 Vrms 80 dB
SR
(6)
Slew Rate V
IN
= 1.414 Vrms, t
rise
= 2 ns 18 12 V/μs (min)
I
total
(8)
Total Quiescent Power Both Amplifiers V
CM
= 0V,
Supply Current V
O
= 0V, I
O
= 0 mA
Standby: Off 50 80 mA (max)
Standby: On 4.2 6 mA (max)
V
OS
(8)
Input Offset Voltage V
CM
= 0V, I
O
= 0 mA 2.0 15 mV (max)
I
B
Input Bias Current V
CM
= 0V, I
O
= 0 mA 0.2 0.5 μA (max)
I
OS
Input Offset Current V
CM
= 0V, I
O
= 0 mA 0.002 0.2 μA (max)
I
O
Output Current Limit |V
CC
| = |V
EE
| = 10V, t
ON
= 10 ms, 3.5 2.9 Apk (min)
V
O
= 0V
V
OD
(8)
Output Dropout Voltage
(9)
|V
CC
–V
O
|, V
CC
= 20V, I
O
= +100 mA 1.8 2.3 V (max)
|V
O
–V
EE
|, V
EE
= −20V, I
O
= −100 mA 2.5 3.2 V (max)
PSRR
(8)
Power Supply Rejection Ratio V
CC
= 25V to 10V, V
EE
= −25V, 115 85 dB (min)
V
CM
= 0V, I
O
= 0 mA
V
CC
= 25V, V
EE
= −25V to −10V 110 85 dB (min)
V
CM
= 0V, I
O
= 0 mA
CMRR
(8)
Common Mode Rejection Ratio V
CC
= 35V to 10V, V
EE
= −10V to −35V, 110 80 dB (min)
V
CM
= 10V to −10V, I
O
= 0 mA
A
VOL
(8)
Open Loop Voltage Gain R
L
= 2 kΩ, Δ V
O
= 20 V 110 90 dB (min)
GBWP Gain Bandwidth Product f
O
= 100 kHz, V
IN
= 50 mVrms 7.5 5 MHz (min)
(1) All voltages are measured with respect to the GND pins (5, 10), 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 specify performance limits. This assumes that the device is within the Operating
Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good indication of device
performance.
(3) Typicals are measured at 25°C and represent the parametric norm.
(4) Limits are ensure that all parts are tested in production to meet the stated values.
(5) 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 differential between V
CC
and V
EE
must be greater than 14V.
(6) AC Electrical Test; Refer to Test Circuit #2 (AC Electrical Test Circuit).
(7) 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 Application Information.
(8) DC Electrical Test; Refer to Test Circuit #1 (DC Electrical Test Circuit).
(9) The output dropout voltage, V
OD
, is the supply voltage minus the clipping voltage. Refer to Figure 16, Figure 17, and Figure 18 in
Typical Performance Characteristics.
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