Datasheet Texas Instruments LM4921ITLX/NOPB — 数据表

LM4921
www.ti.com LM4921 SNAS178E – JULY 2003 – REVISED MAY 2013 Low Voltage I2S 16-Bit Stereo DAC with Stereo
Headphone Power Amplifiers and Volume Control
Check for Samples: LM4921 FEATURES APPLICATIONS 1 2 16-Bit Resolution Stereo DAC
I2S Digital Audio Data Serial Interface
SPI Serial Interface (Control Register)
Volume Control (32 steps; 1.5 dB Increments)
Up to 50mW/Channel Stereo Headphone
Amplifier
Zero Crossing Detection for Silent Attenuation
Steps
2.6VDC to 5.0VDC Digital Supply Voltage Range
2.6VDC to 5.5VDC Analog Supply Voltage Range
(See (1)
Unity-Gain Stable Headphone Amplifiers
Available in the 20-bump DSBGA Package KEY SPECIFICATIONS (1) PSRR at 217Hz, A/DVDD = 3V, (See Figure 1):
52dB (typ)
POUT at AVDD = 3.0V, 32Ω
– < 0.05% THD: 13mW (typ)
– < 0.05% THD: 26mW (typ)
Supply Voltage Range
– DVDD: 2,6V to 5.0V
– AVDD: (See (1) 2.6V to 5.5V …