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840002I の電気的特性と機能

840002IのメーカーはIDTです、この部品の機能は「Crystal-to-LVCMOS/LVTTL Frequency Synthesizer」です。


製品の詳細 ( Datasheet PDF )

部品番号 840002I
部品説明 Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
メーカ IDT
ロゴ IDT ロゴ 




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840002I Datasheet, 840002I PDF,ピン配置, 機能
FemtoClocks™ Crystal-to-LVCMOS/
LVTTL Frequency Synthesizer
840002I
DATASHEET
GENERAL DESCRIPTION
The 840002I is a 2 output LVCMOS/LVTTL Synthesizer
optimized to generate Fibre Channel reference clock
frequencies. Using a 26.5625MHz 18pF parallel resonant
crystal, the following frequencies can be generated based on the
2 frequency select pins (F_SEL1:0): 212.5MHz, 159.375MHz,
156.25MHz, 106.25MHz, and 53.125MHz. The 840002I uses
IDT’s 3rd generation low phase noise VCO technology and can
achieve 1ps or lower typical rms phase jitter, easily meeting
Fibre Channel jitter requirements. The 840002I is packaged in
a 16-pin TSSOP package.
FREQUENCY SELECT FUNCTION TABLE
FEATURES
• Two LVCMOS outputs @ 3.3V, 17Ω typical output imped-
ance
• Selectable crystal oscillator interface
or LVCMOS single-ended input
• Output frequency range: 46.66MHz - 233.33MHz
• VCO range: 560MHz - 700MHz
• Supports the following output frequencies: 212.5MHz,
159.375MHz, 156.25MHz, 106.25MHz and 53.125MHz
• RMS phase jitter @ 212.5MHz (637KHz - 10MHz):
0.83ps (typical)
Typical phase noise at 212.5MHz:
Offset
Noise Power
100Hz ................-91.3 dBc/Hz
1KHz ..............-114.3 dBc/Hz
10KHz ..............-120.7 dBc/Hz
100KHz ..............-120.2 dBc/Hz
• Power supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
2.5V/2.5V
• -40°C to 85°C ambient operating temperature
• Lead-Free package RoHS compliant
Input Frequency
(MHz)
F_SEL1
26.5625
0
26.5625
0
26.5625
1
26.5625
1
26.04166
0
BLOCK DIAGRAM
F_SEL0
0
1
0
1
1
Inputs
M Divider Value N Divider Value
24 3
24 4
24 6
24 12
24 4
Output Frequency
M/N Ratio Value
(MHz)
8 212.5
6 159.375
4 106.25
2 53.125
6 156.25
PIN ASSIGNMENT
F_SEL0
nXTAL_SEL
TEST_CLK
OE
MR
nPLL_SEL
VDDA
VDD
1
2
3
4
5
6
7
8
16 F_SEL1
15 GND
14 GND
13 Q0
12 Q1
11 VDDO
10 XTAL_IN
9 XTAL_OUT
840002I
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
840002I REVISION A 3/30/15
1 ©2015 Integrated Device Technology, Inc.

1 Page





840002I pdf, ピン配列
840002I DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD
4.6V
Inputs, VI
-0.5V to VDD + 0.5 V
Outputs, VO
-0.5V to VDD + 0.5V
Package Thermal Impedance, θJA 89°C/W (0 lfpm)
Storage Temperature, TSTG
-65°C to 150°C
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device.These ratings are stress specifications only. Functional
operation of product at these conditions or any conditions
beyond those listed in the DC Characteristics or AC Charac-
teristics is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect product reliability.
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDA = 3.3V±5%, VDDO = 3.3V±5% OR 2.5V±5%, TA = -40°C TO 85°C
Symbol
VDD
VDDA
Parameter
Core Supply Voltage
Analog Supply Voltage
VDDO
Output Supply Voltage
IDD Power Supply Current
IDDA Analog Supply Current
IDDO Output Supply Current
Test Conditions
Minimum
3.135
3.135
3.135
2.375
Typical
3.3
3.3
3.3
2.5
Maximum
3.465
3.465
3.465
2.625
100
12
5
Units
V
V
V
V
mA
mA
mA
TABLE 4B. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDA = VDDO = 2.5V±5%, TA = -40°C TO 85°C
Symbol
VDD
VDDA
VDDO
I
DD
IDDA
IDDO
Parameter
Core Supply Voltage
Analog Supply Voltage
Output Supply Voltage
Power Supply Current
Analog Supply Current
Output Supply Current
Test Conditions
Minimum
2.375
2.375
2.375
Typical
2.5
2.5
2.5
Maximum
2.625
2.625
2.625
95
12
5
Units
V
V
V
mA
mA
mA
REVISION A 3/30/15
3 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/
LVTTL FREQUENCY SYNTHESIZER


3Pages


840002I 電子部品, 半導体
840002I DATA SHEET
TABLE 6C. AC CHARACTERISTICS, VDD = VDDA = VDDO = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
F_SEL[1:0] = 00
186.67
f Output Frequency Range
OUT
F_SEL[1:0] = 01
F_SEL[1:0] = 10
140
93.33
F_SEL[1:0] = 11
46.67
tsk(o) Output Skew; NOTE 1, 3
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 2
212.5MHz @ Integration Range:
637KHz - 10MHz
159.375MHz @ Integration Range:
637KHz - 10MHz
156.25MHz @ Integration Range:
1.875MHz - 20MHz
106.25MHz @ Integration Range:
637KHz - 10MHz
53.125MHz @ Integration Range:
637KHz - 10MHz
0.78
0.67
0.69
0.82
0.75
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
F_SEL[1:0] ¹ 00
F_SEL[1:0] = 00
200
46
42
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at VDDO/2.
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
226.67
170
113.33
56.67
12
Units
MHz
MHz
MHz
MHz
ps
ps
ps
ps
ps
ps
700 ps
54 %
58 %
FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/
LVTTL FREQUENCY SYNTHESIZER
6
REVISION A 3/30/15

6 Page



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部品番号部品説明メーカ
840002I

Crystal-to-LVCMOS/LVTTL Frequency Synthesizer

IDT
IDT


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