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
(Limits)
Symbol
Parameter
Conditions
(3)
(4)
Typical
Limit
2.0
5.5
10.0
2
V (min)
V (max)
mA (max)
µA (max)
mV (max)
W (min)
W
VDD
Supply Voltage
Quiescent Power Supply Current VIN = 0V, Io = 0A
IDD
ISD
6.5
0.01
5
Shutdown Current
VPIN1 = 0V
VOS
Output Offset Voltage
VIN = 0V
50
THD = 0.5% (max); f = 1 kHz; RL = 8Ω
THD+N = 10%; f = 1 kHz; RL = 8Ω
1.10
1.5
Po
Output Power
1.0
THD+N
Po = 1 Wrms; AVD = 2; 20 Hz ≤ f ≤ 20
kHz; RL = 8Ω
0.25
%
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
PSRR
VDD = 4.9V to 5.1V
65
dB
(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
Typical(1)
Units
(Limits)
Symbol
Parameter
Conditions
Limit(2)
1.2
VIH
VIL
Shutdown Input Voltage High
Shutdown Input Voltage Low
V(min)
V(max)
0.4
(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
1.
Ri
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).
2.
Ci
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.
3.
4.
Rf
Feedback resistance which sets the closed-loop gain in conjunction with Ri.
CS
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.
5.
CB
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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