90074 Datasheet, PDF (6/16 Pages) Texas Instruments – Audio Power Amplifier Series Stereo High Fidelity 200 Volt Driver with Mute

Electrical Characteristics (LM4702A) Vcc = +100V, Vee = –100V
(Pre-release information) (Notes 1, 2)
The following specifications apply for I_MUTE = 1.5mA, Figure 1, unless otherwise specified. Limits apply for T_A = 25˚C.
Symbol
Parameter
Conditions
LM4702
Units
Typical Limit
(Limits)
(Note 6) (Notes 7, 8)
Total Quiescent Power Supply
I_CC
Current
V_CM = 0V, V_O = 0V, I_O = 0A
27
TBD
mA (max)
THD+N
Total Harmonic Distortion +
Noise
No load, A_V = 30dB
V_OUT = 20V_RMS
f = 1kHz
f = 10kHz
0.001
TBD
TBD
TBD
% (max)
f = 100Hz
TBD
TBD
R_S
Input Bias Resistor
Av
Closed Loop Voltage Gain
50
TBD
kΩ (max)
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 = 10kΩ, LPF = 30kHz, Av = 30dB
A-weighted
100
TBD
µV (max)
80
TBD
I_OUT
Output Current
Outputs Shorted
TBD
mA(min)
5.5
TBD
mA (max)
I_mute
Current into Mute Pin
To put part in “play” mode
TBD
mA(min)
1.5
TBD
mA (max)
Av = 30dB
X_TALK
f = 1kHz
Channel Separation (Note 11)
f = 10kHz
90
TBD
TBD
TBD
dB (min)
f = 100Hz
TBD
TBD
SR
Slew Rate
V_IN = 1.2V_P-P, f = 10kHz square Wave,
Outputs shorted
TBD
TBD
V/µs (min)
V_OS
I_B
PSRR
Input Offset Voltage
Input Bias Current
Power Supply Rejection Ratio
V_CM = 0V, I_O = 0mA
V_CM = 0V, I_O = 0mA
Rs = 1k, f = 100Hz,
Vripple = 1Vrms, Input Referred
5
TBD
mV (max)
150
TBD
nA (max)
110
TBD
dB (min)
at 20kHz / 19kHz
IMD
Intermodulation Distortion
at 60Hz / 7kHz
TBD
TBD
dB
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_JMAX, θ_JC, and the ambient temperature T_A. The maximum
allowable power dissipation is P_DMAX = (T_JMAX -T_A)/θ_JC or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4702, T_JMAX = 150˚C
and the typical θ_JC is 1˚C/W. Refer to the Thermal Considerations section for more information.
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_CS (case to sink) is increased, but the heat sink will be electrically isolated from
Vee.
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