WM8986GECO/V Wolfson Microelectronics, WM8986GECO/V Datasheet - Page 27
WM8986GECO/V
Manufacturer Part Number
WM8986GECO/V
Description
Audio Amplifiers Class D Headphone DAC + Line Out
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8986GECOV.pdf
(88 pages)
Specifications of WM8986GECO/V
Product
Class-D
Output Power
40 mW
Thd Plus Noise
- 86 dB
Operating Supply Voltage
1.71 V to 3.6 V, 2.5 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Audio Load Resistance
16 Ohms
Minimum Operating Temperature
- 40 C
Output Signal Type
Differential
Supply Voltage (max)
3.6 V
Supply Voltage (min)
1.71 V, 2.5 V
Output Type
Differential
Package / Case
QFN-28
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Production Data
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VOLUME UPDATES
Volume settings will not be applied to the PGAs until a '1' is written to one of the INPPGAVU bits.
This is to allow left and right channels to be updated at the same time, as shown in Figure 14.
Figure 14 Simultaneous Left and Right Volume Updates
If the volume is adjusted while the signal is a non-zero value, an audible click can occur as shown in
Figure 15.
Figure 15 Click Noise During Volume Update
In order to prevent this click noise, a zero cross function is provided. When enabled, this will cause
the PGA volume to update only when a zero crossing occurs, minimising click noise as shown in
Figure 16.
PD, Rev 4.1, June 2009
WM8986
27
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