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LM1876 Datenblatt(PDF) 4 Page - Texas Instruments

Teilenummer LM1876
Bauteilbeschribung  Audio Power Amplifier Series
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Direct Link  http://www.ti.com
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LM1876 Datenblatt(HTML) 4 Page - Texas Instruments

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LM1876
SNAS097C – MAY 1999 – REVISED APRIL 2013
www.ti.com
Electrical Characteristics
(1) (2)
The following specifications apply for VCC = +22V, VEE = −22V with RL = 8Ω unless otherwise specified. Limits apply for TA =
25°C.
Symbol
Parameter
Conditions
LM1876
Units
(Limits)
Typical(3
Limit(4)
)
|VCC| +
Power Supply Voltage (5)
GND
− VEE ≥ 9V
20
V (min)
|VEE|
64
V (max)
PO
(6)
Output Power
THD + N = 0.1% (max),
(Continuous Average)
f = 1 kHz
|VCC| = |VEE| = 22V, RL = 8Ω
20
15
W/ch (min)
|VCC| = |VEE| = 20V, RL = 4Ω
(7)
22
15
W/ch (min)
THD + N
Total Harmonic Distortion
15 W/ch, RL = 8Ω
0.08
%
Plus Noise
15 W/ch, RL = 4Ω, |VCC| = |VEE| = 20V
0.1
%
20 Hz
≤ f ≤ 20 kHz, AV = 26 dB
Xtalk
Channel Separation
f = 1 kHz, VO = 10.9 Vrms
80
dB
SR (6)
Slew Rate
VIN = 1.414 Vrms, trise = 2 ns
18
12
V/
μs (min)
Itotal
(8)
Total Quiescent Power
Both Amplifiers VCM = 0V,
Supply Current
VO = 0V, IO = 0 mA
Standby: Off
50
80
mA (max)
Standby: On
4.2
6
mA (max)
VOS
(8)
Input Offset Voltage
VCM = 0V, IO = 0 mA
2.0
15
mV (max)
IB
Input Bias Current
VCM = 0V, IO = 0 mA
0.2
0.5
μA (max)
IOS
Input Offset Current
VCM = 0V, IO = 0 mA
0.002
0.2
μA (max)
IO
Output Current Limit
|VCC| = |VEE| = 10V, tON = 10 ms,
3.5
2.9
Apk (min)
VO = 0V
VOD
(8)
Output Dropout Voltage (9)
|VCC–VO|, VCC = 20V, IO = +100 mA
1.8
2.3
V (max)
|VO–VEE|, VEE = −20V, IO = −100 mA
2.5
3.2
V (max)
PSRR (8)
Power Supply Rejection Ratio
VCC = 25V to 10V, VEE = −25V,
115
85
dB (min)
VCM = 0V, IO = 0 mA
VCC = 25V, VEE = −25V to −10V
110
85
dB (min)
VCM = 0V, IO = 0 mA
CMRR (8)
Common Mode Rejection Ratio
VCC = 35V to 10V, VEE = −10V to −35V,
110
80
dB (min)
VCM = 10V to −10V, IO = 0 mA
AVOL
(8)
Open Loop Voltage Gain
RL = 2 kΩ, Δ VO = 20 V
110
90
dB (min)
GBWP
Gain Bandwidth Product
fO = 100 kHz, VIN = 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)
VEE 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 VCC and VEE must be greater than 14V.
(6)
AC Electrical Test; Refer to Test Circuit #2 (AC Electrical Test Circuit).
(7)
For a 4
Ω 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 4
Ω 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, VOD, is the supply voltage minus the clipping voltage. Refer to Figure 16, Figure 17, and Figure 18 in
Typical Performance Characteristics.
4
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