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LM4702 Datasheet(Fiches technique) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LM4702
Description  LM4702 Overture Audio Power Amplifier Series Stereo High Fidelity 200 Volt* Driver with Mute
Télécharger  15 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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 6 page
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Electrical Characteristics (LM4702A) Vcc = +85V, Vee = –85V (Pre-release
information) (Notes 1, 2)
The following specifications apply for I
MUTE = 1.5mA, unless otherwise specified. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4702
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
I
CC
Total Quiescent Power Supply
Current
V
CM = 0V, VO = 0V, IO = 0A
27
TBD
mA (max)
THD+N
Total Harmonic Distortion +
Noise
No load, A
V = 30dB
V
OUT = 20VRMS @ 1kHz
0.001
TBD
% (max)
R
S
Input Bias Resistor
50
TBD
k
Ω (max)
Av
Closed Loop Voltage Gain
TBD
dB (min)
Av open
Open Loop Gain
Vin = 1mVrms, f = 1KHz, C = 30pF
93
dB
Vom
Output Voltage Swing
THD = 0.05%, Freq = 20Hz to 20KHz
57
TBD
Vrms (min)
Vnoise
Output Noise
Rs = 10k
Ω, LPF = 30kHz, Av = 30dB
A-weighted
100
80
TBD
TBD
µV (max)
I
OUT
Output Current
Outputs Shorted
5.5
TBD
TBD
mA(min)
mA (max)
I
mute
Current into Mute Pin
To put part in “play” mode
1.5
TBD
TBD
mA(min)
mA (max)
X
TALK
Channel Separation (Note 11)
f = 1kHz at Av = 30dB
90
TBD
dB (min)
SR
Slew Rate
V
IN = 1.2VP-P, f = 10kHz square Wave,
Outputs shorted
TBD
TBD
V/µs (min)
V
OS
Input Offset Voltage
V
CM = 0V, IO = 0mA
5
TBD
mV (max)
I
B
Input Bias Current
V
CM = 0V, IO = 0mA
150
TBD
nA (max)
PSRR
Power Supply Rejection Ratio
Rs = 1k, f = 100Hz,
Vripple = 1Vrms, Input Referred
110
TBD
dB (min)
Note 1: All voltages are measured with respect to the ground pins, 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
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test condition which
guarantee 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’s performance.
Note 3: The maximum power dissipation must be de-rated at elevated temperatures and is dictated by TJMAX, θJC, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX -TA)/θJC or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4702, TJMAX = 150˚C
and the typical
θJC is 1˚C/W. Refer to the Thermal Considerations section for more information.
Note 4: Human body model, 100pF discharged through a 1.5k
Ω resistor.
Note 5: Machine Model: a 220pF - 240pF discharged through all pins.
Note 6: Typical specifications are measured at 25˚C and represent the parametric norm.
Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9: The maximum operating junction temperature is 150˚C.
Note 10: PCB layout will affect cross talk. It is recommended that input and output traces be separated by as much distance as possible. Return ground traces from
outputs should be independent back to a single ground point and use as wide of traces as possible.
Note 11: The TA15A is a non-isolated package. The package’s metal back and any heat sink to which it is mounted are connected to the Vee potential when using
only thermal compound. If a mica washer is used in addition to thermal compound,
θCS (case to sink) is increased, but the heat sink will be electrically isolated from
Vee.
www.national.com
6




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