LM4876 datasheet(3/19 Pages) TI

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LM4876

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SNAS054E – FEBRUARY 2000 – REVISED MAY 2013

Electrical Characteristics

(1) (2)

The following specifications apply for VDD = 5V unless otherwise specified. Limits apply for TA = 25°C.

LM4876

Units

Symbol

Parameter

Conditions

(Limits)

Typical (3)

Limit (4)

2.0

V (min)

VDD

Supply Voltage

5.5

V (max)

IDD

Quiescent Power Supply Current

VIN = 0V, Io = 0A

6.5

10.0

mA (max)

ISD

Shutdown Current

VPIN1 = 0V

0.01

µA (max)

VOS

Output Offset Voltage

VIN = 0V

mV (max)

THD = 0.5% (max); f = 1 kHz; RL = 8Ω

1.10

W (min)

Output Power

1.0

THD+N = 10%; f = 1 kHz; RL = 8Ω

1.5

THD+N

Po = 1 Wrms; AVD = 2; 20 Hz ≤ f ≤ 20

0.25

Total Harmonic Distortion+Noise

kHz; RL = 8Ω

PSRR

Power Supply Rejection Ratio

VDD = 4.9V to 5.1V

(1)

All voltages are measured with respect to the ground pin, 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 that ensure specific performance limits. This assumes that the device operates within the

Operating Ratings. Specifications are not ensured for parameters where no limit is given. The typical value, however, is a good

indication of device performance.

(3)

Typicals are measured at 25°C and represent the parametric norm.

(4)

Limits are ensured to AOQL (Average Outgoing Quality Level).

Electrical Characteristics VDD = 5/3.3/2.6V

LM4876

Units

Symbol

Parameter

Conditions

(Limits)

Typical(1)

Limit(2)

VIH

Shutdown Input Voltage High

1.2

V(min)

VIL

Shutdown Input Voltage Low

0.4

V(max)

(1)

Typicals are measured at 25°C and represent the parametric norm.

(2)

Limits are ensured to AOQL (Average Outgoing Quality Level).

External Components Description

(Figure 1)

Components

Functional Description

Inverting input resistance which sets the closed-loop gain in conjunction with Rf. This resistor also forms a high pass

filter with Ci at fC= 1/(2π RiCi).

Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a highpass filter with

Ri at fC = 1/(2π RiCi). Refer to the section, SELECTING PROPER EXTERNAL COMPONENTS, for an explanation of

how to determine the value of Ci.

Feedback resistance which sets the closed-loop gain in conjunction with Ri.

Supply bypass capacitor which provides power supply filtering. Refer to the POWER SUPPLY BYPASSING section for

information concerning proper placement and selection of the supply bypass capacitor.

Bypass pin capacitor which provides half-supply filtering. Refer to the section, SELECTING PROPER EXTERNAL

COMPONENTS, for information concerning proper placement and selection of CB.

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