AD9548/PCBZ Analog Devices Inc, AD9548/PCBZ Datasheet - Page 105

• Manufacturer Part Number: AD9548/PCBZ
• Description: Clock Generator Evaluation Board
• Manufacturer: Analog Devices Inc

Specifications of AD9548/PCBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Network Clock Generator/Synchronizer
• Kit Application Type: Clock & Timing
• Silicon Core Number: AD9548
• Kit Contents: Board
• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: AD9548
• Primary Attributes: 62.5 ~ 450 MHz Output Frequency
• Secondary Attributes: SPI and I2C Compatible Control Port
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER SUPPLY PARTITIONS
The AD9548 features multiple power supplies, and their power
consumption varies with the AD9548 configuration. This
section provides information about which power supplies can
be grouped together and how the power consumption of each
block varies with frequency.
The numbers quoted here are for comparison only. Please refer
to the Specifications section for exact numbers. With each group,
bypass capacitors of 1 μF in parallel with 10 μF should be used.
Upon applying power to the device, internal circuitry monitors
the 1.8 V digital core supply and the 3.3 V digital I/O supply.
When these supplies cross the desired threshold level, the device
generates an internal 10 μs reset pulse. This pulse does not
appear on the RESET pin.
3.3 V SUPPLIES
The 3.3 V supply domain consists of two main partitions, digital
(DVDD3) and analog (AVDD3). Take care to keep these two
supply domains separate.
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Furthermore, the AVDD3 consists of two subdomains: the clock
distribution output domain (Pin 31, Pin 37, Pin 38, and Pin 44)
and the rest of the AVDD3 supply connections. Generally, these
supply domains can be joined together. However, if an application
requires 1.8 V CMOS driver operation in the clock distribution
output block, then provide one 1.8 V supply domain to power
the clock distribution output block. Each output driver has a
dedicated supply pin, as shown in Table 153.
Table 153. Output Driver Supply Pins
Output Driver
OUT0
OUT1
OUT2
OUT3
1.8 V SUPPLIES
The 1.8 V supply domain consists of two main partitions, digital
(DVDD) and analog (AVDD). These two supply domains must
be kept separate.
Supply Pin
31
37
38
44
AD9548