ak2548 AKM Semiconductor, Inc., ak2548 Datasheet - Page 28

• Manufacturer Part Number: ak2548
• Description: 7 Channel E1 Transceiver - Asahi Kasei Microsystems
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Reference current circuit
Power Supply
C0028-E-00
To determine input reference current, connect 12k ±1% resistor.
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.
Pin name
RAVDD1-RAVSS1, RAVDD2-RAVSS2, BVDD-BVSS,
TAVDD1-TAVSS1, TAVDD2-TAVSS2
TVDD1-TVSS1, TVDD2-TVSS2, TVDD3-TVSS3, TVDD4-TVSS4,
TVDD5-TVSS5,
IOVSS1, IOVDD2-IOVSS2,
PVDD-PVSS
AK2548
AK2548
BGREF
TVDD6-TVSS6,
C1
R1=12k ±1%
DVDD1-DVSS1, DVDD2-DVSS2,
R1
TVDD7-TVSS7,
28
VDD
IOVDD1-
0.01uF
1uF
C1
[AK2548]
1999/9