LM4950
SNAS174E –JULY 2003–REVISED MAY 2013
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Electrical Characteristics VDD = 12V(1)(2)
The following specifications apply for VDD = 12V, AV = 0dB (SE) or 6dB (BTL) unless otherwise specified. Limits apply for TA =
25°C.
Symbol
Parameter
Conditions
LM4950
Units
(Limits)
Typical(3)
Limit(4)(5)
IDD
Quiescent Power Supply Current
Shutdown Current
VIN = 0V, IO = 0A, No Load
VSHUTDOWN = GND(6)
VIN = 0V, RL = 8Ω
16
40
5
30
80
30
mA (max)
µA (max)
mV (max)
ISD
VOS
VSDIH
Offset Voltage
Shutdown Voltage Input High
2.0
VDD/2
V (min)
V (max)
VSDIL
TWU
Shutdown Voltage Input Low
Wake-up Time
0.4
V (max)
ms
CB = 10µF
440
170
150
190
°C (min)
°C (max)
TSD
PO
Thermal Shutdown Temperature
Output Power
f = 1kHz
RL = 4Ω SE, Single Channel, THD+N
= 1%
RL = 8Ω BTL, THD+N = 10%
3.0
W (min)
%
3.1
7.5
PO = 2.5Wrms; f = 1kHz;
RL = 4Ω SE
0.05
0.14
10
THD+N
Total Harmomic Distortion + Noise
PO = 2.5Wrms; AV = 10; f = 1kHz; RL
= 4Ω, SE
εOS
Output Noise
A-Weighted Filter, VIN = 0V,
Input Referred
µV
dB
XTALK
Channel Separation
fIN = 1kHz, PO = 1W, SE Mode
RL = 8Ω
RL = 4Ω
76
70
PSRR
IOL
Power Supply Rejection Ratio
Output Current Limit
VRIPPLE = 200mVp-p, f = 1kHz,
RL = 8Ω, BTL
70
5
56
dB (min)
A
VIN = 0V, RL = 500mΩ
(1) All voltages are measured with respect to the GND 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 VDD = 12V 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 specified 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 AOQL (Average Outgoing Quality Level).
(5) Datasheet min/max specification limits are specified by design, test, or statistical analysis.
(6) Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for
minimum shutdown current.
4
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