AD9522-4/PCBZ Analog Devices Inc, AD9522-4/PCBZ Datasheet - Page 47

• Manufacturer Part Number: AD9522-4/PCBZ
• Description: 12/24 Channel Clock Gen 2,0GH
• Manufacturer: Analog Devices Inc

Specifications of AD9522-4/PCBZ

• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: AD9522-4
• Primary Attributes: 12 LVDS/24 CMOS Outputs, 1.6 GHz VCO
• Secondary Attributes: I²C & SPI Interfaces
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LVDS Output Drivers
The AD9522 output drivers can be configured as either an
LVDS differential output or as a pair of CMOS single-ended
outputs. The LVDS outputs allow for selectable output current
from ~1.75 mA to ~7 mA.
The LVDS output polarity can be set as noninverting or
inverting, which allows for the adjustment of the relative
polarity of outputs within an application without requiring a
board layout change. Each LVDS output can be individually
powered down to save power.
SYNC PIN
INPUT TO CHANNEL DIVIDER
SYNC PIN
INPUT TO CHANNEL DIVIDER
INPUT TO VCO DIVIDER
CHANNEL DIVIDER
CHANNEL DIVIDER
OUTPUT CLOCKING
OUTPUT CLOCKING
CHANNEL DIVIDER
CHANNEL DIVIDER
INPUT TO CLK
OUTPUT OF
OUTPUT OF
Figure 52. SYNC Timing Pipeline Delay When the VCO Divider Is Used—CLK or VCO Is Input
Figure 53. SYNC Timing Pipeline Delay When the VCO Divider Is Not Used—CLK Input Only
1
1
14 TO 15 CYCLES AT CHANNEL DIVIDER INPUT + 1 CYCLE AT VCO DIVIDER INPUT
14 TO 15 CYCLES AT CHANNEL DIVIDER INPUT + 1 CYCLE AT CLK INPUT
2
2
3
3
CHANNEL DIVIDER OUTPUT STATIC
CHANNEL DIVIDER OUTPUT STATIC
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4
4
5
5
6
6
7
7
8
Figure 54. LVDS Output Simplified Equivalent Circuit with
8
9
9
10
10
3.5 mA Typical Current Source
3.5mA
3.5mA
11
11
12
12
13
13
14
OUT
OUT
14
1
1
OUTPUT CLOCKING
OUTPUT CLOCKING
CHANNEL DIVIDER
CHANNEL DIVIDER
AD9522-4