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LM4675SDBD bảng dữ liệu(PDF) 5 Page - Texas Instruments

tên linh kiện LM4675SDBD
Giải thích chi tiết về linh kiện  Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum
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LM4675SDBD bảng dữ liệu(HTML) 5 Page - Texas Instruments

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LM4675, LM4675SDBD, LM4675TLBD
www.ti.com
SNAS353C – AUGUST 2006 – REVISED MAY 2013
Electrical Characteristics
(1)(2) (continued)
The following specifications apply for AV = 2V/V (RI = 150kΩ), RL = 15µH + 8Ω + 15µH unless otherwise specified. Limits
apply for TA = 25°C.
LM4675
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)(5)
VRipple = 200mVPP Sine,
fRipple = 217Hz, VDD = 3.6, 5V
82
dB
Inputs to AC GND, CI = 2μF
Power Supply Rejection Ratio
PSRR
(Input Referred)
VRipple = 200mVPP Sine,
fRipple = 1kHz, VDD = 3.6, 5V
80
dB
Inputs to AC GND, CI = 2μF
SNR
Signal to Noise Ratio
VDD = 5V, PO = 1WRMS
97
dB
VDD = 3.6V, f = 20Hz – 20kHz
Inputs to AC GND, CI = 2μF
28
μVRMS
Output Noise
No Weighting
εOUT
(Input Referred)
VDD = 3.6V, Inputs to AC GND
22
μVRMS
CI = 2μF, A Weighted
Common Mode Rejection
VDD = 3.6V, VRipple = 1VPP Sine
CMRR
Ratio
fRipple = 217Hz
80
dB
(Input Referred)
TWU
Wake-up Time
VDD = 3.6V
17
μs
TSD
Shutdown Time
140
μs
VDD = 3.6V, POUT = 400mW
89
%
RL = 8Ω
η
Efficiency
VDD = 5V, POUT = 1W
89
%
RL = 8Ω
External Components Description
(Figure 2)
Components
Functional Description
1.
CS
Supply bypass capacitor which provides power supply filtering. Refer to the POWER SUPPLY BYPASSING section
for information concerning proper placement and selection of the supply bypass capacitor.
2.
CI
Input AC coupling capacitor which blocks the DC voltage at the amplifier's input terminals.
Copyright © 2006–2013, Texas Instruments Incorporated
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