參數(shù)資料
型號: AD9520-5BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 58/76頁
文件大?。?/td> 0K
描述: IC CLOCK GEN EXT VCO 64LFCSP
設計資源: Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers (CN0121)
Phase Coherent FSK Modulator (CN0186)
標準包裝: 750
類型: 時鐘發(fā)生器,扇出配送
PLL:
輸入: CMOS,LVDS,LVPECL
輸出: CMOS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:12,2:24
差分 - 輸入:輸出: 是/是
頻率 - 最大: 2.4GHz
除法器/乘法器: 是/無
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-VFQFN 裸露焊盤,CSP
供應商設備封裝: 64-LFCSP-VQ(9x9)
包裝: 帶卷 (TR)
Data Sheet
AD9520-5
Rev. A | Page 61 of 76
Reg.
Addr.
(Hex)
Bits
Name
Description
[1:0]
Antibacklash
pulse width
Bit
1
Bit
0
Antibacklash Pulse Width (ns)
0
2.9 (default)
0
1
1.3
1
0
6.0
1
2.9
0x018
7
Enable CMOS
reference input
dc offset
Enables dc offset in single-ended CMOS input mode to prevent chattering when ac-coupled and input is lost.
0: disables dc offset (default).
1: enables dc offset.
[6:5]
Lock detect
counter
Required consecutive number of PFD cycles with edges inside lock detect window before the DLD indicates a locked
condition.
Bit
6
Bit
5
PFD Cycles to Determine Lock
0
5 (default)
0
1
16
1
0
64
1
255
4
Digital lock
detect window
If the time difference of the rising edges at the inputs to the PFD is less than the lock detect window time, the digital lock
detect flag is set. The flag remains set until the time difference is greater than the loss-of-lock threshold.
0: high range (default). The default setting is 3.5 ns.
1: low range.
3
Disable digital
lock detect
Digital lock detect operation.
0: normal lock detect operation (default).
1: disables lock detect.
[2:0]
Unused
Unused.
0x019
[7:6]
R, A, B counters
SYNC pin reset
Bit
7
Bit
6
Action
0
Does nothing on SYNC (default).
0
1
Asynchronous reset.
1
0
Synchronous reset.
1
Does nothing on SYNC.
[5:3]
R path delay
R path delay, see Table 2 (default: 0x0).
[2:0]
N path delay
N path delay, see Table 2 (default: 0x0).
0x01A 7
Enable STATUS
pin divider
Enables a divide-by-4 on the STATUS pin. This makes it easier to look at low duty-cycle signals out of the R and N dividers.
0: divide-by-4 disabled on STATUS pin (default).
1: divide-by-4 enabled on STATUS pin.
6
Ref freq monitor
threshold
Sets the reference (REF1/REF2) frequency monitor’s detection threshold frequency. This does not affect the CLK frequency
monitor’s detection threshold (see Table 14
: REF1, REF2, and CLK frequency status monitor parameter).
0: frequency valid if frequency is above 1.02 MHz (default).
1: frequency valid if frequency is above 6 kHz.
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