參數(shù)資料
型號: AD9557BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 57/92頁
文件大?。?/td> 0K
描述: IC CLK XLATR PLL 1250MHZ 40LFCSP
產(chǎn)品變化通告: Minor Mask Change 11/Apr/2012
標(biāo)準(zhǔn)包裝: 750
類型: 時鐘/頻率轉(zhuǎn)換器
PLL:
主要目的: 以太網(wǎng),SONET/SDH
輸入: CMOS,LVDS,LVPECL
輸出: CMOS,HSTL,LVDS
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 1.25GHz
電源電壓: 1.71 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 40-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 40-LFCSP-VQ(6x6)
包裝: 帶卷 (TR)
AD9557
Data Sheet
Rev. B | Page 60 of 92
Reg
Addr
(Hex)
Opt
Name
D7
D6
D5
D4
D3
D2
D1
D0
Def
Profile B (for REFB)
0x0740
L
Reference
period
(up to
1.1 ms)
Nominal period (fs), Bits[7:0] (default: 125 s = 1/(8 kHz) for default system clock setting)
00
0x0741
L
Nominal period (fs), Bits[15:8]
A2
0x0742
L
Nominal period (fs), Bits[23:16]
94
0x0743
L
Nominal period (fs), Bits[31:24]
1A
0x0744
L
Nominal period (fs), Bits[39:32]
1D
0x0745
L
Frequency
tolerance
Inner tolerance (1 ppm), Bits[7:0] (for reference invalid to valid; 50% down to 1 ppm) (default: 5%)
14
0x0746
L
Inner tolerance (1 ppm), Bits[15:8] (for reference invalid to valid; 50% down to 1 ppm)
00
0x0747
L
Reserved
Inner tolerance, Bits[19:16]
00
0x0748
L
Outer tolerance (1 ppm), Bits[7:0] (for reference valid to invalid; 50% down to 1 ppm] (default: 10%)
0A
0x0749
L
Outer tolerance (1 ppm), Bits[15:8] (for reference valid to invalid; 50% down to 1 ppm)
00
0x074A
L
Reserved
Outer tolerance, Bits[19:16]
00
0x074B
L
Validation
Validation timer (ms), Bits[7:0] (up to 65.5 seconds)
0A
0x074C
L
Validation timer (ms), Bits[15:8] (up to 65.5 seconds)
00
0x074D
L
Reserved
00
0x074E
L
Select base
loop filter
Reserved
Sel high PM
base loop filt
00
0x074F
L
DPLL loop
BW
Digital PLL loop bandwidth scaling factor[7:0] (default: 0x01F4 = 50 Hz)
F4
0x0750
L
Digital PLL loop bandwidth scaling factor[15:8]
01
0x0751
L
Reserved
BW scaling
factor[16]
00
0x0752
L
DPLL
R divider
(20 bits)
R divider[7:0]
00
0x0753
L
R divider[15:8]
00
0x0754
L
Reserved
Enable REFB
divide-by-2
R divider[19:16]
00
0x0755
DPLL
N divider
(17 bits)
Digital PLL feedback divider—Integer Part N1[7:0]
1F
0x0756
Digital PLL feedback divider—Integer Part N1[15:8]
5B
0x0757
Reserved
Digital PLL
feedback
divider—
Integer Part
N1[16]
00
0x0758
DPLL
fractional
feedback
divider
(24 bits)
Digital PLL fractional feedback divider—FRAC1[7:0]
00
0x0759
Digital PLL fractional feedback divider—FRAC1[15:8]
00
0x075A
Digital PLL fractional feedback divider—FRAC1[23:16]
00
0x075B
DPLL
fractional
feedback
divider
modulus
(24 bits)
Digital PLL feedback divider modulus—MOD1[7:0]
01
0x075C
Digital PLL feedback divider modulus—MOD1[15:8]
00
0x075D
Digital PLL feedback divider modulus—MOD1[23:16]
00
0x075E
L
Lock
detectors
Phase lock threshold[7:0] (ps)
BC
0x075F
L
Phase lock threshold[15:8] (ps)
02
0x0760
L
Phase lock fill rate[7:0]
0A
0x0761
L
Phase lock drain rate[7:0]
0A
0x0762
L
Frequency lock threshold[7:0]
BC
0x0763
L
Frequency lock threshold[15:8]
02
0x0764
L
Frequency lock threshold[23:16]
00
0x0765
L
Frequency lock fill rate[7:0]
0A
0x0766
L
Frequency lock drain rate[7:0]
0A
0x0780
Reserved
C9
0x0781
Reserved
EA
0x0782
Reserved
10
0x0783
Reserved
03
0x0784
Reserved
00
0x0785
Reserved
14
0x0786
Reserved
00
0x0787
Reserved
00
0x0788
Reserved
0A
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