AD9516-5 Analog Devices, Inc., AD9516-5 Datasheet - Page 26
AD9516-5
Manufacturer Part Number
AD9516-5
Description
14-output Clock Generator
Manufacturer
Analog Devices, Inc.
Datasheet
1.AD9516-5.pdf
(76 pages)
- Current page: 26 of 76
- Download datasheet (2Mb)
AD9516-5
Mode 2: High Frequency Clock Distribution—CLK or
External VCO >1600 MHz
The AD9516 power-up default configuration has the PLL
powered off and the routing of the input set so that the CLK/
CLK input is connected to the distribution section through the
VCO divider (divide-by-2/divide-by-3/divide-by-4/divide-by-5/
divide-by-6). This is a distribution-only mode that allows for an
external input up to 2400 MHz (see
frequency that can be applied to the channel dividers is 1600 MHz;
therefore, higher input frequencies must be divided down before
reaching the channel dividers. This input routing can also be
used for lower input frequencies, but the minimum divide is 2
before the channel dividers.
When the PLL is enabled, this routing also allows the use of the
PLL with an external VCO or VCXO with a frequency <2400 MHz.
In this configuration, the external VCO/VCXO feeds directly
into the prescaler.
The register settings shown in Table 21 are the default values
of these registers at power-up or after a reset operation. If the
contents of the registers are altered by prior programming after
power-up or reset, these registers may also be set intentionally
to these values.
Table 3
). The maximum
Rev. 0 | Page 26 of 76
Table 21. Default Settings of Some PLL Registers
Register
0x010[1:0] = 01b
0x1E0[2:0] = 010b
0x1E1[0] = 0b
When using the internal PLL with an external VCO, the PLL
must be turned on.
Table 22. Settings When Using an External VCO
Register
0x010[1:0] = 00b
0x010 to 0x01D
An external VCO requires an external loop filter that must be
connected between CP and the tuning pin of the VCO. This
loop filter determines the loop bandwidth and stability of the
PLL. Make sure to select the proper PFD polarity for the VCO
being used.
Table 23. Setting the PFD Polarity
Register
0x010[7] = 0b
0x010[7] = 1b
Description
PLL normal operation (PLL on).
PLL settings. Select and enable a reference
input; set R, N (P, A, B), PFD polarity, and I
according to the intended loop configuration.
Description
PLL asynchronous power-down (PLL off )
Set VCO divider = 4
Use the VCO divider
Description
PFD polarity positive (higher control
voltage produces higher frequency)
PFD polarity negative (higher control
voltage produces lower frequency)
CP
Related parts for AD9516-5
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
14-output Clock Generator With Integrated 2.2 Ghz Vco
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Ultrasonic Bubble Air-in-line Sensors
Manufacturer:
Sensortechnics GmbH
Datasheet:
Part Number:
Description:
Analog Divider
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Analog Front End For Adsl
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Lc2mos Complete, 12-bit Analog I/o System
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Cmos 4/8 Channel Analog Multiplexers
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Low Cost, Low Power Cmos General Purpose Analog Front End
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
2.5 V To 5.0 V Micropower, Precision Series Mode Voltage References
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Stereo, Single-supply 18-bit Integrated Dac
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Multichannel 24-bit, 192 Khz, Dac
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Ac?97 Soundmax Codec
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Complete Dual 18-bit 16 X Fs Audio Dac
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Sampleport Stereo Asynchronous Sample Rate Converters
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
U.s./international Modem Daa Line Codec Chipset
Manufacturer:
Analog Devices, Inc.
Datasheet:
Part Number:
Description:
Low Distortion 750 Mhz Closed-loop Buffer Amp
Manufacturer:
Analog Devices, Inc.
Datasheet: