lm4935rlx National Semiconductor Corporation, lm4935rlx Datasheet - Page 11
lm4935rlx
Manufacturer Part Number
lm4935rlx
Description
Audio Sub-system With Dual-mode Stereo Headphone And Mono High Efficiency Loudspeaker Amplifiers And Multi-purpose Adc
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM4935RLX.pdf
(113 pages)
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HEADPHONE AMPLIFIER
SNR
HP
e
∆A
X
EARPIECE AMPLIFIER
P
PSRR
SNR
EP
e
V
AUXOUT AMPLIFIER
THD+N
PSRR
CP_OUT AMPLIFIER
THD+N
PSRR
MONO ADC
R
PB
SBA
SNR
ADC
10.0 Electrical Characteristics
BB_V
otherwise stated. Limits apply for 25˚C. (Continued)
N
N
TALK
EP
OS
ADC
Symbol
CH-CH
THD+N
ADC
THD+N
ADC
HP
EP
ADC
LEVEL
EP
DD
= 1.8V, A_V
Signal to Noise Ratio
Headphone Harmonic Distortion
Output Noise
Stereo Channel-to-Channel Gain
Mismatch
Stereo Crosstalk
Earpiece Power
Power Supply Rejection Ratio
(Earpiece)
Signal to Noise Ratio
Earpiece Harmonic Distortion
Output Noise
Offset Voltage
Total Harmonic Distortion + Noise
Power Supply Rejection Ratio
Total Harmonic Distortion + Noise
Power SUpply Rejection Ratio
ADC Ripple
ADC Passband
ADC Stopband Attenuation
ADC Signal to Noise Ratio
ADC Full Scale Input Level
DD
= 3.3V, LS_V
Parameter
DD
= 3.3V. The following specifications apply for the circuit shown in Figure 2 unless
(Notes 1, 2) Unless otherwise stated PLL_V
32Ω load, 3.3V, P
A-weighted
32Ω load, 3.3V
16Ω load, 3.3V
From 0dB Analog AUX input,
32Ω load, 3.3V, P
A-weighted
V
AUX inputs terminated
C
f
V
C
f
Lower (HPF Mode 1), f
Upper
Above Passband
From CPI, A-weighted
From 0dB Analog AUX input
A-weighted
SE Mode
OCL Mode
VCM = 1.2V
OCL Mode
VCM = 1.5V
SE Mode
OCL Mode
AUX inputs terminated
C
V
F
A-weighted
V
V
HPF Notch, 50 Hz/60 Hz (worst
case)
RIPPLE
RIPPLE
RIPPLE
RIPPLE
O
RIPPLE
O
RIPPLE
BYPASS
BYPASS
BYPASS
= 1V
= 1V
= 217Hz
= 217Hz
= 200 mV
= 217 Hz
RMS
= 200mVPP
RMS
= 200mVPP
11
= 1.0 µF
= 1.0µF
= 1.0µF
, 5kΩ load
, 5kΩ load
Conditions
O
O
P-P
= 7.5mW
= 50mW
S
= 8 kHz
DD
(Note 6)
Typical
±
3470
0.05
0.04
0.02
0.02
115
150
300
0.3
0.25
= 3.3V, D_V
98
97
96
12
61
63
65
98
24
15
70
68
60
58
90
1
LM4935
(Note 7)
Limit
100
DD
= 3.3V,
www.national.com
Units
V
(min)
mW
mW
mV
dB
dB
dB
µV
dB
dB
dB
dB
dB
µV
dB
dB
dB
Hz
Hz
dB
dB
dB
RMS
%
%
%
%
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