LM4930LQBD National Semiconductor, LM4930LQBD Datasheet - Page 11

• Manufacturer Part Number: LM4930LQBD
• Description: BOARD EVALUATION LM4930LQ
• Manufacturer: National Semiconductor
• Series: Boomer®r

Specifications of LM4930LQBD

• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1W x 1 @ 8 Ohm; 27mW x 2 @ 32 Ohm
• Voltage - Supply: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: LM4930
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

V
THD+N
P
P
PSRR
SNR
(Voice)
SNR
(Music)
DR
(Voice)
DR
(Music)
SNR
DR
X
V
R
R
PB
SBA
UPB
Symbol
MIC_BIAS
OHP
OLS
TALK
MIC-IN
VDAC
VADC
Electrical Characteristics DV
(Notes 1, 2, 8) (Continued)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
VDAC
ADC
VDAC
VADC
ADC
Mic Bias Voltage
Headphone Amplifier Total
Harmonic Motion Distortion +
Noise
Headphone Amplifier Output
Power
Mono Speaker Amplifier Output
Power
Power Supply Rejection Ratio
Signal-to-Noise Ratio
(Voice DAC Path)
Signal-to-Noise Ratio (Music
Audio Path)
Dynamic Range (Voice DAC Path) Signal = Vo at f = 1kHz
Dynamic Range (Music Audio
Path)
Signal-to-Noise Ratio
(Voice ADC Path)
Dynamic Range
(Voice ADC Path)
Stereo Channel-to-Channel
Crosstalk
Maximum Differential MIC Input
Voltage
Voice DAC Ripple
Voice ADC Ripple
Voice DAC Passband
Voice DAC Stopband Attenuation
Voice ADC Upper Passband
Cutoff Frequency.
Parameter
f
Load
THD+N = 0.5%, f
THD+N = 1%, f
C
C
V
MIC_N terminated with 10Ω to ground
Signal = Vo at f = 1kHz
32Ω Stereo Load; Noise = digital zero,
A-weighted, 0dB gain setting
Signal = Vo at f = 1kHz
32Ω Stereo Load; Noise = digital zero,
A-weighted; 0dB gain setting
32Ω Stereo Load; Noise for -60dBFS
digital input; A-weighted; 0dB gain setting
Signal = Vo at f=1kHz
Stereo Load; Noise for -60dBFS digital
input; A-weighted, 0dB gain setting
Reference signal = 0dBFS
MIC_P, MIC_N terminated with 10Ω to
ground;
A-weighted; 47dB MIC preamp gain
setting
Reference signal = 0dBFS
Noise for -60dBFS digital input;
A-weighted; 47dB MIC preamp gain
setting
f
-3dB
17dB MIC Preamp gain setting
300Hz - 3.3kHz through head-phone
output.
300Hz - 3.3kHz through head-phone
output.
-3dB Point
Above 4kHz
Upper -3dB Point
IN
S
RIPPLE
BYPASS
DAC_REF
= 48kHz, f
DD
= 1 kHz, P
FS
= 3.3V, AV
= 200mV
= 1.0µF
= 1.0µF
IN
OUT
= 1kHz sinewave at
Conditions
OUT
OUT
P-P
11
= 7.5mW; 32Ω Stereo
= 1kHz
@
= 1kHz
@
217Hz, MIC_P,
@
@
@
1% THD+N, 32Ω
DD
1% THD+N,
1% THD+N,
1% THD+N,
= 5V, R
LHP
(Note 6)
Typical
+/-0.15
+/-0.25
0.07
3.46
3.47
570
2.0
27
55
72
86
72
86
75
75
75
72
1
= 32Ω, R
LM4930
(Notes 7,
Limits
+/-0.2
+/-0.3
15)
20
45
LHF
A
= 25˚C.
= 8Ω
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mW (min)
dB (max)
dB (max)
dB (min)
(Limits)
mV
Units
kHz
kHz
dB
dB
dB
dB
dB
dB
dB
dB
W
%
V
P-P