LM4830 National Semiconductor, LM4830 Datasheet - Page 4

• Manufacturer Part Number: LM4830
• Description: Two-Way Audio Amplification System with Volume Control
• Manufacturer: National Semiconductor

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Symbol
PREAMP, A2
Xtalk
PSRR
MICROPHONE BUFFER, A3
R
V
e
THD
Xtalk
The following specifications apply for V
IN
IN
OS
Electrical Characteristics
Note 1: All voltages are measured with respect to the ground pins (Pins 2, 15, and 24), unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
+150˚C, and the typical junction-to-ambient thermal resistance, when board mounted, is 79˚C/W.
Note 4: Human body model, 100 pF discharged through a 1.5 k
Note 5: Machine model, 200 pF–240 pF discharged through all pins.
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guarantees that all parts are tested in production to meet the stated values.
Timing Diagram
Crosstalk
Power Supply Rejection Ratio
Buffer Input Resistance
Output Offset Voltage
Input Noise
Total Harmonic Distortion
Crosstalk
Parameter
DMAX
= (T
JMAX
− T
DD
A
= 5V, unless otherwise specified. Limits apply for T
)/
(Notes 1, 2) (Continued)
JA
A
R
V
V
IHF-A Weighting Filter, R
P
Power Amp: P
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4830M, T
VCL
DDAC
IN
O
L
= 50 mW, f = 1 kHz, R
= 0V
= 8 , f = 1 kHz
= 100, Power Amp: P
= 0.5 V
resistor.
O
PP
= 1W, R
Conditions
, f = 1 kHz
4
S
L
L
= 8 , f = 1 kHz
= 25
O
= 32
= 1W,
JMAX
,
JA
DS012677-3
, and the ambient temperature, T
A
= 25˚C.
(Note 6)
Typical
−72
−76
2.0
5.8
0.5
60
17
LM4830
(Note 7)
Limit
A
. The maximum
(Limits)
Units
JMAX
mV
dB
dB
k
µV
dB
%
=