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LM4962 датащи(PDF) 6 Page - Texas Instruments

номер детали LM4962
подробное описание детали  Ceramic Speaker Driver
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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LM4962
SNAS300C – DECEMBER 2005 – REVISED MARCH 2006
www.ti.com
Electrical Characteristics
The following specifications apply for VDD = 3.2V, AV-BTL = 26dB, ZL = 2µF+9.4Ω, Cb = 1.0μF, R2 = 25KΩ, R5 = 4.9KΩ unless
otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
LM4962
Units
(Limits)
Typical
Limit
(1)
(2) (3)
IDD
Quiescent Power Supply Current
VIN = 0V,
9
12
mA (max)
in Boosted Ringer Mode
Iddrcv
Quiescent Power Supply Current
SD Boost = GND
3
5
mA (max)
in Receiver Mode
SD Amp = VDD
ISD
Shutdown Current (4)
SD Boost = SD Amp = GND
0.1
2.0
µA (max)
VLH
Logic High Threshold Voltage
For SD Boost, SD Amp
1.2
V (min)
VLL
Logic Low Threshold Voltage
For SD Boost, SD Amp
0.4
V (max)
RPULLDOWN
Pulldown Resistor
For SD Amp, SD Boost
80
60
k
Ω (min)
TWUBC
Boost Converter Wake-up Time
CSS = 10nF
2
5
ms (max)
TWUA
Audio Amplifier Wake-up Time
(For Vdd = 2.7V to 8.5V)
20
40
msec
VOUT
Output Voltage Swing
THD = 1% (max), f = 1kHz
15
14
Vpp (min)
THD+N
Total Harmonic Distortion + Noise
Vout = 14Vpp, f = 1kHz
0.4
1.0
%
εOS
Output Noise
A-Weighted Filter, VIN = 0V
125
µV
VRIPPLE = 200mVp-p, f = 100Hz,
PSRR
Power Supply Rejection Ratio
86
71
dB (min)
Input Referred
Ron-sw-leak
On Resistance on SW-Leak
SD Boost = GND
30
50
Ω (max)
Isink = 100
μA
Ron
Flagout On resistance
Isink = 1mA
50
100
Ω (max)
Sensitivity of Over Voltage Protection
9.5
V (max)
Vovp
Flagout = GND
9.0
on VAMP
8.5
V (min)
Sensitivity of Over Current Protection
275
mV (max)
Vocp
Flagout = GND
185
(Voltage Across RS)
75
mV (min)
Ileak
Leak Current on Flagout pin
Vflagout = VDD
2
μA (max)
2.7
A (max)
ISW
SW Current Limit
2
1.2
A (min)
TSD
Thermal Shutdown Temperature
150
°C (min)
Vos
Output Offset Voltage
5
25
mV
SD Boost = VDD
1.15
V (min)
VFB
Feedback Voltage
1.23
SD Amp = VDD
1.31
V (max)
(1)
Typicals are measured at 25°C and represent the parametric norm.
(2)
Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
(3)
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
(4)
Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to Vin for
minimum shutdown current.
6
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Copyright © 2005–2006, Texas Instruments Incorporated
Product Folder Links: LM4962


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