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LM4961LQBD Datenblatt(PDF) 3 Page - Texas Instruments

Teilenummer LM4961LQBD
Bauteilbeschribung  Ceramic Speaker Driver
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LM4961, LM4961LQBD
www.ti.com
SNAS242J – AUGUST 2004 – REVISED MARCH 2007
Absolute Maximum Ratings
(1) (2) (3)
Supply Voltage (Vdd)
6.0V
Amplifier Supply Voltage (V1)
9.5V
Storage Temperature
−65°C to +150°C
Input Voltage
−0.3V to VDD + 0.3V
Power Dissipation(4)
Internally limited
ESD Susceptibility(5)
2000V
ESD Susceptibility(6)
200V
Junction Temperature
150°C
Thermal Resistance
θJA (WQFN)
66°C/W
(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 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 ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(4)
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature,
TA. The maximum allowable power dissipation is PDMAX = (TJMAX − TA) / θJA or the given in Absolute Maximum Ratings, whichever is
lower. For the LM4961 typical application (shown in Figure 2) with VDD = 4.2V, RL = 2μF+30Ω mono BTL operation the maximum power
dissipation is 232mW.
θJA = 66°C/W.
(5)
Human body model, 100pF discharged through a 1.5k
Ω resistor.
(6)
Machine Model, 220pF–240pF discharged through all pins.
Operating Ratings
Temperature Range
TMIN ≤ TA ≤ TMAX
−40°C ≤ TA ≤ +85°C
Supply Voltage (VDD)
3.0V < VDD < 5.0V
Amplifier Supply Voltage (V1)
2.7V < V1 < 9.0V
Electrical Characteristics VDD = 4.2V
The following specifications apply for VDD = 4.2V, AV-BTL = 26dB, RL = 2µF+30Ω, Cb = 1.0μF, Band-SW = VDD unless
otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
LM4961
Units
(Limits)
Typical(1)
Limit(2)(3)
IDD
Quiescent Power Supply Current
VIN = 0V, No Load
7
14
mA (max)
Band-SW = VDD
Iddrcv
Iq in receiver mode
VIN = 0V, No Load
2
4
mA (max)
Band-SW = GND
ISD
Shutdown Current
VSHUTDOWN1 = VSHUTDOWN2 = GND
0.1
2.0
µA (max)
Band-SW = GND (Note 9)
VLH
Logic High Threshold Voltage
For Shutdown 1, Shutdown 2, and
1.5
V (min)
Band-SW
VLL
Logic Low Threshold Voltage
For Shutdown 1, Shutdown 2, and
0.4
V (max)
Band-SW
RPULLDOWN
Pulldown Resistor
For Shutdown 2 and Band-SW
70k
50k
Ω (min)
TSD
Thermal Shutdown Temperature
125
°C (min)
THD = 1%, f = 1kHz
Vout
Output Voltage Swing
15
14
Vp-p (min)
RL = 2μF+30Ω Mono BTL
THD+N
Total Harmomic Distortion + Noise
Vout = 14Vp-p, f = 1kHz
0.05
1.0
% (max)
εOS
Output Noise
A-Weighted Filter, VIN = 0V (Note 10)
115
µV
(1)
Typicals are measured at 25°C and represent the parametric norm.
(2)
Limits are specified to AOQL (Average Outgoing Quality Level).
(3)
Datasheet min/max specification limits are specified by design, test, or statistical analysis.
Copyright © 2004–2007, Texas Instruments Incorporated
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