Typical values are given for VS
參數(shù)資料
型號(hào): AD9518-4ABCPZ-RL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 34/64頁(yè)
文件大小: 0K
描述: IC CLOCK GEN 6CH 1.8GHZ 48LFCSP
標(biāo)準(zhǔn)包裝: 750
類(lèi)型: 時(shí)鐘發(fā)生器,扇出配送
PLL:
輸入: CMOS,LVDS,LVPECL
輸出: LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:6
差分 - 輸入:輸出: 是/是
頻率 - 最大: 1.8GHz
除法器/乘法器: 是/無(wú)
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 48-VFQFN 裸露焊盤(pán),CSP
供應(yīng)商設(shè)備封裝: 48-LFCSP-VQ(7x7)
包裝: 帶卷 (TR)
AD9518-4
Data Sheet
Rev. B | Page 4 of 64
SPECIFICATIONS
Typical values are given for VS = VS_LVPECL = 3.3 V ± 5%; VS ≤ VCP ≤ 5.25 V; TA = 25°C; RSET = 4.12 kΩ; CPRSET = 5.1 kΩ, unless otherwise noted.
Minimum and maximum values are given over full VS and TA (40°C to +85°C) variation.
POWER SUPPLY REQUIREMENTS
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
VS
3.135
3.3
3.465
V
3.3 V ± 5%
VS_LVPECL
2.375
VS
V
Nominally 2.5 V to 3.3 V ± 5%
VCP
VS
5.25
V
Nominally 3.3 V to 5.0 V ± 5%
RSET Pin Resistor
4.12
Sets internal biasing currents; connect to ground
CPRSET Pin Resistor
2.7
5.1
10
Sets internal CP current range, nominally 4.8 mA (CP_lsb = 600 μA);
actual current can be calculated by CP_lsb = 3.06/CPRSET;
connect to ground
BYPASS Pin Capacitor
220
nF
Bypass for internal LDO regulator; necessary for LDO stability;
connect to ground
PLL CHARACTERISTICS
Table 2.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
VCO (ON-CHIP)
Frequency Range
1450
1800
MHz
See
VCO Gain (KVCO)
50
MHz/V
See
Tuning Voltage (VT)
0.5
VCP
0.5
V
VCP ≤ VS when using internal VCO; outside of this range, the CP
spurs may increase due to CP up/down mismatch
Frequency Pushing (Open-Loop)
1
MHz/V
Phase Noise at 100 kHz Offset
109
dBc/Hz
f = 1625 MHz
Phase Noise at 1 MHz Offset
128
dBc/Hz
f = 1625 MHz
REFERENCE INPUTS
Differential Mode (REFIN, REFIN)
Differential mode (can accommodate single-ended input
by ac grounding undriven input)
Input Frequency
0
250
MHz
Frequencies below about 1 MHz should be dc-coupled;
be careful to match VCM (self-bias voltage)
Input Sensitivity
250
mV p-p
PLL figure of merit (FOM) increases with increasing slew rate
the input sensitivity is sufficient for ac-coupled
LVPECL and LVDS signals
Self-Bias Voltage, REFIN
1.35
1.60
1.75
V
Self-bias voltage of REFIN1
Self-Bias Voltage, REFIN
1.30
1.50
1.60
V
Self-bias voltage of REFIN1
Input Resistance, REFIN
4.0
4.8
5.9
Input Resistance, REFIN
4.4
5.3
6.4
Dual Single-Ended Mode (REF1, REF2)
Two single-ended CMOS-compatible inputs
Input Frequency (AC-Coupled)
20
250
MHz
Slew rate > 50 V/μs
Input Frequency (DC-Coupled)
0
250
MHz
Slew rate > 50 V/μs; CMOS levels
Input Sensitivity (AC-Coupled)
0.8
V p-p
Should not exceed VS p-p
Input Logic High
2.0
V
Input Logic Low
0.8
V
Input Current
100
+100
μA
Pulse Width High/Low
1.8
ns
This value determines the allowable input duty cycle and is the
amount of time that a square wave is high/low
Input Capacitance
2
pF
Each pin, REFIN/REFIN (REF1/REF2)
PHASE/FREQUENCY DETECTOR (PFD)
PFD Input Frequency
100
MHz
Antibacklash pulse width = 1.3 ns, 2.9 ns
45
MHz
Antibacklash pulse width = 6.0 ns
Antibacklash Pulse Width
1.3
ns
Register 0x017[1:0] = 01b
2.9
ns
Register 0x017[1:0] = 00b; Register 0x017[1:0] = 11b
6.0
ns
Register 0x017[1:0] = 10b
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