PCM5121 datasheet(63/121 Pages) TI2

Part #	PCM5121

Description	PCM512x 2-VRMS DirectPath™, 112-dB and 106-dB Audio Stereo DACs With 32-Bit, 384-kHz PCM Interface

PDF	121 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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63 / 121 page

0.9 * DVDD

0.1 * DVDD

2.0 V

1.2 V

XSMT

Digital Attenuation Followed by Analog Mute

Analog Mute

System

VDD

XSMT

7.25kW

2.75kW

12V

supply

PCM5121, PCM5122

www.ti.com

SLAS763C – AUGUST 2012 – REVISED OCTOBER 2018

Product Folder Links: PCM5121 PCM5122

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External Power Sense Undervoltage Protection Mode (continued)

Figure 81. XSMT in External UVP Mode

Figure 82. XSMT Timing for Undervoltage Protection

The trigger voltage values for the soft mute and hard mute are shown in Table 47. The range of values will vary

from device to device, but typical thresholds are shown. XSMT should be set up to nominally be 3.3 V along with

DVDD, but derived from a higher system power supply rail.

Table 47. Distribution of Voltage Thresholds

MIN

TYP

MAX

UNIT

Soft Mute Threshold Voltage

2.2

0.9 × DVDD

Hard Mute Threshold Voltage

0.1 × DVDD

0.9

1.2

PCM5121 Datasheet(PDF) 63 Page - Texas Instruments