Data Sheet

FLC-BTM901 Datasheet
Flaircomm Microelectronics,Inc. - 17-
■ Class 1 support
5.4 Li-ion Battery Charger
■ Integrated battery charger supporting internal mode (up to 200 mA) and external
mode (up to 1.8 A)
■ Variable float (or termination) voltage adjustable in 50 mV steps from 3.65 V to 4.4 V
■ Thermal monitoring and management are implementable in application software
■ Pre-charge to fast charge transition configurable at 2.5 V, 2.9 V, 3.0 V, and 3.1 V
5.5 Power Management
■ Integrated power management unit (PMU) to minimize external components
■ BTM901 runs directly from a Li-ion, USB, or external supply (2.8 V to 6.5 V)
■ Auto-switching between battery and USB (or other) charging source
■ Power islands employed to optimize power consumption for variety of use-cases
■ Dual switch-mode power supply: Automatic mode selection to minimize power
consumption
5.6 Audio Engine And Digital Audio Interfaces
■ 24-bit I²S interface with 1 input and 3 output channels
■ Programmable audio master clock (MCLK)
■ Sony/Philips digital interface (SPDIF): 2, configurable as input or output
■ Stereo analog outputs configurable as differential Class- AB headphone outputs or
differential high efficiency Class-D outputs:
□ A signal-to-noise ratio (SNR) differential: 98 dBA typ.
□ A total harmonic distortion plus noise (THD+N) differential, 32 Ω load: -85 dB typ.
■ Dual analog inputs configurable as single ended line inputs or, unbalanced or
balanced analog microphone inputs:
□ SNR single-ended: 96 dBA typ.
□ THD+N single-ended: -85 dB typ.
■ 1 microphone bias (single bias shared by the two channels):
□ Crosstalk attenuation between two inputs using recommended application circuit: 65
dB
■ Digital microphone inputs with capability to interface up to 6 digital microphones
■ Both analog-to-digital converter (ADC)s and digital-to- analog converter (DAC)s