LM2876

SNAS088C – AUGUST 1995 – REVISED MARCH 2013

www.ti.com

ELECTRICAL CHARACTERISTICS

(1) (2)

The following specifications apply for V

+ = +30V, V− = −30V, I

MUTE = −0.5 mA with RL = 8Ω unless otherwise specified. Limits

apply for TA = 25°C.

Symbol

Parameter

Conditions

LM2876

Units

(Limits)

Typical(3

Limit(4)

)

20

V (min)

|V+| + |V−|

Power Supply Voltage (5)

Vpin7 − V

− ≥ 9V

18

60

V (max)

Pin 8 Open or at 0V, Mute: On Current out of Pin

115

80

dB (min)

AM

Mute Attenuation

8 > 0.5 mA, Mute: Off

PO

(6)

Output Power (Continuous Average)

THD + N = 0.1% (max) f = 1 kHz; f = 20 kHz

40

25

W (min)

Peak PO

Instantaneous Peak Output Power

75

W

THD + N

Total Harmonic Distortion Plus Noise

25W, 20 Hz

≤ f ≤ 20 kHz AV = 26 dB

0.06

%

SR (6)

Slew Rate (7)

VIN = 1.2 Vrms, f = 10 kHz, Square-Wave, RL =

V/

μs (min)

9

5

2 k

Ω

I+(8)

Total Quiescent Power Supply Current

VCM = 0V, Vo = 0V, Io = 0A

24

50

mA (max)

VOS

(8)

Input Offset Voltage

VCM = 0V, Io = 0 mA

1

10

mV (max)

IB

Input Bias Current

VCM = 0V, Io = 0 mA

0.2

1

μA (max)

IOS

Input Offset Current

VCM = 0V, Io = 0 mA

0.01

0.2

μA (max)

Io

Output Current Limit

|V+| = |V−| = 10V, tON = 10 ms, VO = 0V

4

3

A (min)

|V+–VO|, V

+ = 20V, I

o = +100 mA

1.5

4

V (max)

Vod

(8)

Output Dropout Voltage (9)

|VO–V

−|, V− = −20V, I

o = −100 mA

2.5

4

V (max)

V+ = 30V to 10V, V− =

−30V, VCM = 0V, Io = 0

125

85

dB (min)

mA

PSRR (8)

Power Supply Rejection Ratio

V+ = 30V, V− =

−30V to −10V, VCM = 0V, Io = 0

110

85

dB (min)

mA

V+ = 50V to 10V, V− =

−10V to −50V, VCM = 20V

CMRR (8)

Common Mode Rejection Ratio

110

75

dB (min)

to

−20V, Io = 0 mA

AVOL

(8)

Open Loop Voltage Gain

|V+| = |V−| = 30V, RL = 2 kΩ, ΔVO = 40V

115

80

dB (min)

GBWP

Gain-Bandwidth Product

|V+| = |V−| = 30V, fO = 100 kHz, VIN = 50 mVrms

8

2

MHz (min)

IHF—A Weighting Filter, RIN = 600Ω (Input

eIN (6)

Input Noise

2.0

8

μV (max)

Referred)

PO = 1W, A-Weighted, Measured at 1 kHz, RS =

98

dB

25

Ω

PO = 25W, A-Weighted, Measured at 1 kHz, RS

SNR

Signal-to-Noise Ratio

112

dB

= 25

Ω

Ppk= 75W, A-Weighted, Measured at 1 kHz, RS

117

dB

= 25

Ω

60 Hz, 7 kHz, 4:1 (SMPTE)

0.004

IMD

Intermodulation Distortion Test

%

60 Hz, 7 kHz, 1:1 (SMPTE)

0.006

(1)

All voltages are measured with respect to the GND pin (pin 7), 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 ensure specific performance limits. This assumes that the device is within the

Operating Ratings. Specifications are not ensured 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 specified to Texas Instruments' AOQL (Average Outgoing Quality Level).

(5)

V− must have at least

−9V at its pin with reference to ground in order for the under-voltage protection circuitry to be disabled.

(6)

AC Electrical Test; refer to Test Circuit #2 .

(7)

The feedback compensation network limits the bandwidth of the closed-loop response and so the slew rate will be reduced due to the

high frequency roll-off. Without feedback compensation, the slew rate is typically larger.

(8)

DC Electrical Test; refer to Test Circuit #1 .

(9)

The output dropout voltage is the supply voltage minus the clipping voltage. Refer to the Clipping Voltage vs Supply Voltage graph in the

TYPICAL PERFORMANCE CHARACTERISTICS section.

4

Submit Documentation Feedback

Copyright © 1995–2013, Texas Instruments Incorporated

Product Folder Links: LM2876