8350G的各项指标详解,专业的请进来解读下
Stereo Hi-Fi CODEC
DAC SNR 98dB (‘A’ weighted @ 48kHz), THD -84dB
ADC SNR 95dB (‘A’ weighted @ 48kHz), THD -80dB
40mW on-chip headphone driver with ‘capless’ option
16Ω headphone load: THD –70dB, Po = 20mW
2 differential microphone inputs with low-noise bias voltage and programmable preamps
Programmable high-pass filter for ADC
Microphone and Headphone detection
Auxiliary inputs for analogue signals
Sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1 or 48kHz
System Control
Support for I2C or SPI Control Interface
Handles power sequencing, reset signals and fault conditions
Autonomous power source selection (battery, wall adaptor or USB bus)
Total current drawn from USB bus is limited to comply with USB 2.0 standard and USB OTG supplement
Supply Generation
2 x DC-DC Buck Converters (0.85V - 3.4V, Up to 1A)
2 x DC-DC Buck Converters (0.85V - 3.4V, Up to 500mA)
2 x DC-DC Boost Converters (5V - 20V, 40 to 200mA)
4 x LDO voltage regulators (0.9V - 3.4V, 150mA)
LED Drivers
2 programmable constant-current sinks, suitable for screen backlight or white LED photo flash
3 open-drain outputs for RGB LEDs
Battery Charger
Single-cell Li-on / Li-Pol battery charger
Thermal protection for charge control; temperature monitoring available for thermal regulation
LED outputs to indicate charge status and fault conditions
Additional Features
“Always on” RTC with wake-up alarm
Watchdog timer
Up to 13 configurable GPIO pins
On-chip crystal oscillator and internal RC oscillator
Low power FLL supporting 32kHz to 19.2MHz input clocks
7x7mm, 129 BGA package, 0.5mm ball pitch
目标应用:
Portable navigation devices
VoIP handsets
Portable audio and media players
Other portable systems powered by single-cell lithium batteries