Datasheet

DR
AFT
DR
AFT
DRAFT
DR
D
RAFT
DRAFT
DRA
F
T DRAF
D
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DRAFT
D
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LPC3152_3154 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Preliminary data sheet Rev. 0.12 — 27 May 2010 44 of 88
NXP Semiconductors
LPC3152/3154
This module has the following features:
• Three input options: line-in (stereo), tuner-in (stereo), microphone-in (mono).
• Low-Noise Amplifier (LNA) with a fixed 30 dB gain for the microphone input.
• Programmable Gain Amplifier (PGA). Gain can be set in steps of 3 dB up to 24 dB.
• Single-to-Differential Converter (SDC).
• SADC (switched cap).
• Supported audio sample frequencies are 8 kHz to 55 kHz.
• Oversampling rate 128 times the sample frequency.
• High dynamic range.
• Digital dB-linear volume control in 0.5 dB steps.
• DC blocking filter (optional).
• Soft start-up.
• Mute and overflow detection.
7.3 Li-ion charger
The built-in charger allows a Li-ion battery to be charged from the power supplied by a
USB connection or by an AC adapter.
This module has the following features:
• Monitors for battery voltage, charge current, battery temperature feedback (NTC), and
chip temperature (programmable temperature limits).
• Maximum charge current 250 mA.
Fig 12. Stereo ADC for audio
LNA PGA
PGA
PGA
SDC
SDC
SDC
LPC3152/3154
MUX_R1
MUX_R0
MUX_L0
ADC_VINR
ADC_TINR
ADC_MIC
ADC_VINL
ADC_TINL
MUX_L1
SADC
right out
left out
002aae559
analog die/stereo ADC