Datasheet

1.5
2
2.5
3
3.5
4
2.7 2.9 3.1 3.3 3.5
V -SupplyVoltage-V
DD
MICBIAS -VVOLTAGE
NoLoad
PGM=V
DD
PGM=2V
PGM=2.5V
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0 20 40 60 80 100
HeadphoneOutPower-mW
THD-TotalHarmonicDistortion-dB
3.6VDD_CM1.8_LDAC
3.3VDD_CM1.65_RDAC
3.6VDD_CM1.8_RDAC
3.3VDD_CM1.65_LDAC
2.7VDD_CM1.35_LDAC
2.7VDD_CM1.35_RDAC
TLV320AIC3107
www.ti.com SLOS545D –NOVEMBER 2008–REVISED DECEMBER 2014
Typical Application (continued)
11.2.1 Design Requirements
For this design example, use the parameters shown in Table 186.
Table 186. Design Parameters
PARAMETER VALUE
Supply Voltage (AVDD, DRVDD) 3.3 V
Supply Voltage (DVDD, IOVDD) 1.8 V
Analog High-Power Output Driver
16 Ω
Load
Analog Fully Differential Line
10 kΩ
Output Driver Load
Class D Audio Amplifier Load 18 Ω
11.2.2 Detailed Design Procedure
• Use the Typical Application Schematic as a guide, integrate the hardware into the system.
• Following the recommended component placement, schematic layout and routing given in the Figure 41
below, integrate the device and its supporting components into the system PCB.
– For questions and support go to the E2E forums (e2e.ti.com). If it is necessary to deviate from the
recommended layout, please visit the E2E forum to request a layout review.
• Determining sample rate and Master clock frequency is required since powering up the device as all internal
timing is derived from the master clock. Refer to the Audio Clock Generation section in order to get more
information on how to configure correctly the required clocks for the device.
• As the TLV320AIC3107 is designed for low-power applications, when powered up, the device has several
features powered down. A correct routing of the TLV320AIC3107 signals is achieved by a correct setting of
the device registers, powering up the required stages of the device and configuring the internal switches to
follow a desired route.
• For more information of the device configuration and programming, refer to the TLV320AIC3107 technical
documents section in ti.com (http://www.ti.com/product/TLV320AIC3105/technicaldocuments).
11.2.3 Application Curves
Figure 38. Total Harmonic Distortion vs Headphone Out
Figure 39. MICBIAS Voltage vs Supply Voltage
Power
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