LM4702A NSC [National Semiconductor], LM4702A Datasheet - Page 6

• Manufacturer Part Number: LM4702A
• Description: LM4702 Overture Audio Power Amplifier Series Stereo High Fidelity 200 Volt* Driver with Mute
• Manufacturer: NSC [National Semiconductor]

www.national.com
I
THD+N
R
Av
Av open
Vom
Vnoise
I
I
X
SR
V
I
PSRR
CC
OUT
mute
B
S
TALK
OS
Electrical Characteristics (LM4702A) Vcc = +85V, Vee = –85V (Pre-release
information)
The following specifications apply for I
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 T
allowable power dissipation is P
and the typical θ
Note 4: Human body model, 100pF discharged through a 1.5kΩ 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, θ
Vee.
Symbol
JC
Total Quiescent Power Supply
Current
Total Harmonic Distortion +
Noise
Input Bias Resistor
Closed Loop Voltage Gain
Open Loop Gain
Output Voltage Swing
Output Noise
Output Current
Current into Mute Pin
Channel Separation (Note 11)
Slew Rate
Input Offset Voltage
Input Bias Current
Power Supply Rejection Ratio
is 1˚C/W. Refer to the Thermal Considerations section for more information.
(Notes 1, 2)
DMAX
Parameter
= (T
JMAX
-T
MUTE
A
)/θ
JC
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4702, T
= 1.5mA, unless otherwise specified. Limits apply for T
V
No load, A
V
Vin = 1mVrms, f = 1KHz, C = 30pF
THD = 0.05%, Freq = 20Hz to 20KHz
Rs = 10kΩ, LPF = 30kHz, Av = 30dB
A-weighted
Outputs Shorted
To put part in “play” mode
f = 1kHz at Av = 30dB
V
Outputs shorted
V
V
Rs = 1k, f = 100Hz,
Vripple = 1Vrms, Input Referred
CM
OUT
IN
CM
CM
= 1.2V
= 0V, V
= 0V, I
= 0V, I
= 20V
V
P-P
O
O
RMS
O
= 30dB
, f = 10kHz square Wave,
= 0mA
= 0mA
= 0V, I
6
Conditions
@
CS
1kHz
(case to sink) is increased, but the heat sink will be electrically isolated from
O
= 0A
JMAX
, θ
JC
, and the ambient temperature T
(Note 6) (Notes 7, 8)
Typical
0.001
TBD
100
150
110
5.5
1.5
27
50
93
57
80
90
5
LM4702
A
= 25˚C.
Limit
TBD
TBD
TBD
TBD
TBD
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A
. The maximum
JMAX
Vrms (min)
V/µs (min)
mA (max)
mA (max)
mA (max)
mV (max)
kΩ (max)
µV (max)
nA (max)
% (max)
dB (min)
mA(min)
mA(min)
dB (min)
dB (min)
(Limits)
Units
= 150˚C
dB