LM49352RLX/NOPB National Semiconductor, LM49352RLX/NOPB Datasheet - Page 67

• Manufacturer Part Number: LM49352RLX/NOPB
• Description: IC AMP AUDIO MONO D1.4W 36USMD
• Manufacturer: National Semiconductor
• Series: Boomer®, PowerWise®r
• Type: Class Dr

Specifications of LM49352RLX/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.4W x 1 @ 8 Ohm; 65mW x 2 @ 32 Ohm
• Features: Depop, Differential Inputs, I²C, I²S, Microphone, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Other names: LM49352RLX

Bits
Bits
2:0
0
1
2
3
4
ADC_SCLP_ENB
DAC_ALC_ENB
DAC_EQ_ENB
DAC_PK_ENB
HPF_MODE
RSVD
Field
Field
This configures the ADC's High Pass Filter (HPF). To calculate the –3dB cutoff frequency, multiply
the coefficient by the sample rate (Hz): f
This enables the DAC's Automatic Level Control.
This enables the DAC's Peak Detector.
This enables the DAC's 5-band Parametric EQ.
Reserved
This enables the DAC's Soft Clip Feature.
HPF_MODE
000
001
010
011
100
101
110
111
TABLE 44. DAC EFFECTS (0x71h)
TABLE 45. HPF MODE (0x80h)
X
X
X
X
X
X
X
6
7
X
3
4
5
Coefficient
1
2
= 0.0020833
= 0.0015625
0
= 0.009166
= 0.006875
= 0.003125
= 0.01833
= 0.01375
67
= 0.0275
C
= X
Description
Description
n
.f
S(Hz)
f
f
f
C
C
C
= 220Hz for:
= 100Hz for:
= 150Hz for:
Filter Characteristics
32kHz Audio
48kHz Audio
96kHz Audio
12kHz Voice
16kHz Voice
24kHz Voice
32kHz Voice
8kHz Voice
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