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LM4935 Datasheet(PDF) 11 Page - Texas Instruments

Part # LM4935
Description  Audio Power Amplifier Series Audio Sub-System with Dual-Mode Stereo Headphone & Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM4935 Datasheet(HTML) 11 Page - Texas Instruments

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LM4935, LM4935RLEVAL
www.ti.com
SNAS296D – OCTOBER 2005 – REVISED MARCH 2006
Electrical Characteristics(1)(2)(3) (continued)
Unless otherwise stated PLL_VDD = 3.3V, D_VDD = 3.3V, BB_VDD = 1.8V, A_VDD = 3.3V, LS_VDD = 3.3V. The following
specifications apply for the circuit shown in Figure 2-2 unless otherwise stated. Limits apply for 25°C.
LM4935
Symbol
Parameter
Conditions
Units
Typical(4)
Limit(5)
PSRREP
Power Supply Rejection Ratio
AUX inputs terminated
(Earpiece)
CBYPASS = 1.0 µF
65
dB
VRIPPLE = 200 mVP-P
FRIPPLE = 217 Hz
SNREP
Signal to Noise Ratio
From 0dB Analog AUX input, A-weighted
98
dB
EPTHD+N
Earpiece Harmonic Distortion
32
Ω load, 3.3V, PO = 50mW
0.04
%
eN
Output Noise
A-weighted
24
µV
VOS
Offset Voltage
15
mV
AUXOUT AMPLIFIER
THD+N
Total Harmonic Distortion + Noise
VO = 1VRMS, 5kΩ load
0.02
%
PSRR
Power Supply Rejection Ratio
AUX inputs terminated
CBYPASS = 1.0μF
70
dB
VRIPPLE = 200mVPP
fRIPPLE = 217Hz
CP_OUT AMPLIFIER
THD+N
Total Harmonic Distortion + Noise
VO = 1VRMS, 5kΩ load
0.02
%
PSRR
Power SUpply Rejection Ratio
CBYPASS = 1.0μF
VRIPPLE = 200mVPP
68
dB
fRIPPLE = 217Hz
MONO ADC
RADC
ADC Ripple
±0.25
dB
PBADC
ADC Passband
Lower (HPF Mode 1), fS = 8 kHz
300
Hz
Upper
3470
Hz
SBAADC
ADC Stopband Attenuation
Above Passband
60
dB
HPF Notch, 50 Hz/60 Hz (worst case)
58
dB
SNRADC
ADC Signal to Noise Ratio
From CPI, A-weighted
90
dB
ADCLEVEL
ADC Full Scale Input Level
1
VRMS
STEREO DAC
RDAC
DAC Ripple
0.1
dB
PBDAC
DAC Passband
20
kHz
SBADAC
DAC Stopband Attenuation
70
dB
SNRDAC
DAC Signal to Noise Ratio
A-weighted, AUXOUT
88
dB
DRDAC
DAC Dynamic Range
96
dB
DACLEVEL
DAC Full Scale Output Level
1
VRMS
PLL(7)
FIN
Input Frequency Range
Min
0.5
MHz
Max
30
MHz
I2S/PCM
fS = 48kHz; 16 bit mode
1.536
MHz
fS = 48kHz; 25 bit mode
2.4
MHz
fI2SCLK
I2S CLK Frequency
fS = 8kHz; 16 bit mode
0.256
MHz
fS = 8kHz; 25 bit mode
0.4
MHz
fS = 48kHz; 16 bit mode
0.768
MHz
fS = 48kHz; 25 bit mode
1.2
MHz
fPCMCLK
PCM CLK Frequency
fS = 8kHz; 16 bit mode
0.128
MHz
fS = 8kHz; 25 bit mode
0.2
MHz
(7)
Disabling or bypassing the PLL will usually result in an improvement in noise measurements.
Copyright © 2005–2006, Texas Instruments Incorporated
Electric Specifications
11
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Product Folder Links: LM4935 LM4935RLEVAL


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