AK2548 Datasheet, PDF (28/30 Pages) Asahi Kasei Microsystems – 7 channel E1 Transceiver

ASAHI KASEI
Reference current circuit
To determine input reference current, connect 12kΩ±1% resistor.
AK2548
R1
BGREF
[AK2548]
R1=12kΩ±1%
Power Supply
To attenuate the power supply noise, connect capacitors between VDD and VSS respectively.
The value of the capacitance AK2548 need depend on the condition of the power supply line.
Please decide the value of the capacitance after your evaluation.
AK2548
VDD
C1
Pin name
RAVDD1-RAVSS1, RAVDD2-RAVSS2, BVDD-BVSS,
TAVDD1-TAVSS1, TAVDD2-TAVSS2
TVDD1-TVSS1, TVDD2-TVSS2, TVDD3-TVSS3, TVDD4-TVSS4,
TVDD5-TVSS5, TVDD6-TVSS6, TVDD7-TVSS7, IOVDD1-
IOVSS1, IOVDD2-IOVSS2, DVDD1-DVSS1, DVDD2-DVSS2,
PVDD-PVSS
C1
1uF
0.01uF
C0028-E-00
28
1999/9