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◆ Supply Voltage Range . . . 2.7 V to 16 V
◆ Supply Current . . . 550 µA/Channel
◆ Input Noise Voltage . . . 39 nV/vHz
◆ Input Bias Current . . . 1 pA
◆ Specified Temperature Range
0°C to 70°C . . . Commercial Grade
-40°C to 125°C . . . Industrial Grade
◆ Ultrasmall Packaging
8 Pin MSOP (TLV272)
3.5.11 function introduction to TAS5508PAG
1. DESCRIPTION
The TAS5508 is an eight channel digital pulse width modulator (PWM) that provides both advanced
performance and a high level of system integration. The TAS5508 is designed to interface seamlessly with
most audio digital signal processors. In crystal mode, the TAS5508 automatically adjusts control
configurations in response to clock and data rate changes and idle conditions. This enables the TAS5508 to
provide an easy to use control interface with relaxed timing requirements.
The TAS5508 can drive eight channels of H-bridge power stages. Texas Instruments H-bridge parts
TAS5111, TAS5112, or TAS5182 + FETs are designed to work seamlessly with the TAS5508. The TAS5508
supports both single-ended or bridge tied load configurations. The TAS5508 also provides a high
performance differential output to drive an external differential input analog headphone amplifier (such as the
TPA112).
The TAS5508’s uses an AD modulation operating at a 384-kHz switching rate for 48-, 96-, and 192-kHz
data. The 8x over sampling combined with the 5th order noise shaper provides a broad flat noise floor and
excellent dynamic range from 20 Hz to 20 kHz.
The TAS5508 is clock slave only device. The TAS5508 receives MCLK, SCLK and LRCLK from other
system components. The TAS5508 accepts master clock rates of 64, 128, 192, 256, 384, 512, and 768 Fs.
The TAS5508 accepts a 64-Fs bit clock.
The TAS5508 allows for extending the dynamic range by providing a power supply volume control (PSVC)
output signal.
2. FEATURES
◆ Automated Operation With an Easy to Use Control Interface
◆ I
2
C Serial Control Slave Interface
◆ Integrated AM Interference Avoidance Circuitry
◆ Single 3.3-V Power Supply
◆ 64-Pin TQFP Package
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