LM1877 datasheet(3/14 Pages) TI

3 / 14 page

LM1877

www.ti.com

SNAS550B – FEBRUARY 1995 – REVISED APRIL 2013

Electrical Characteristics

VS = 20V, TA = 25°C

(1) R

L = 8Ω, AV = 50 (34 dB) unless otherwise specified

Parameter

Conditions

Min

Typ

Max

Units

Total Supply Current

PO = 0W

Output Power

THD = 10%

LM1877

VS = 20V, RL = 8Ω

2.0

W/Ch

VS = 12V, RL = 8Ω

1.3

W/Ch

Total Harmonic Distortion

f = 1 kHz, VS = 14V

LM1877

PO = 50 mW/Channel

0.075

PO = 500 mW/Channel

0.045

PO = 1 W/Channel

0.055

Output Swing

RL = 8Ω

VS −6

Vp-p

Channel Separation

CF = 50 μF, CIN = 0.1 μF,

f = 1 kHz, Output Referred

VS = 20V, VO = 4 Vrms

−50

−70

VS = 7V, VO = 0.5 Vrms

−60

PSRR Power Supply

CF = 50 μF, CIN = 0.1 μF,

Rejection Ratio

f = 120 Hz, Output Referred

VS = 20V, VRIPPLE = 1 Vrms

−50

−65

VS = 7V, VRIPPLE = 0.5 Vrms

−40

Noise

Equivalent Input Noise

RS = 0, CIN = 0.1 μF,

2.5

μV

BW = 20 Hz–20 kHz, Output Noise Wideband

RS = 0, CN = 0.1 μF, AV 200

0.80

Open Loop Gain

RS = 0, f = 100 kHz, RL = 8Ω

Input Offset Voltage

Input Bias Current

Input Impedance

Open Loop

DC Output Level

VS = 20V

Slew Rate

2.0

μs

Power Bandwidth

kHz

Current Limit

1.0

(1)

For operation at ambient temperature greater than 25°C, the LM1877 must be derated based on a maximum 150°C junction

temperature.

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