ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 93
ak4141
Manufacturer Part Number
ak4141
Description
Nicam/a2/eia-j Digital Stereo Decoder
Manufacturer
AKM Semiconductor, Inc.
Datasheet
1.AK4141.pdf
(96 pages)
- Current page: 93 of 96
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[AK4141]
1. Grounding and Power Supply Decoupling
The AK4141 requires careful attention to power supply and grounding arrangements. AVDD, DVDD and TVDD are
usually supplied from analog supply in system. If AVDD, DVDD and TVDD are supplied separately, the power up
sequence is not critical. All GND pins must be connected to analog ground plane. System analog ground and digital
ground should be connected together near to where the supplies are brought onto the printed circuit board. Decoupling
capacitors should be as near to the AK4141 as possible, with the small value ceramic capacitor being the nearest.
2. Voltage Reference Inputs
The voltage of AVDD sets the analog input/output range. A 1μF ceramic capacitor attached between VCOM pin and
GND4 pin eliminates the effects of high frequency noise. No load current may be drawn from VCOM pin. All signals,
especially clocks, should be kept away from the AVDD and VCOM pins in order to avoid unwanted coupling into the
AK4141.
3. Analog Inputs
The AK4141 receives the analog SIF. Each input pins are biased internally.
MS0952-E-00
2008/05
- 93 -
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