DataSheet.es    


PDF ICS843004 Data sheet ( Hoja de datos )

Número de pieza ICS843004
Descripción FEMTOCLOCKS LVCMOS/CRYSTAL-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER
Fabricantes Integrated Circuit Systems 
Logotipo Integrated Circuit Systems Logotipo



Hay una vista previa y un enlace de descarga de ICS843004 (archivo pdf) en la parte inferior de esta página.


Total 16 Páginas

No Preview Available ! ICS843004 Hoja de datos, Descripción, Manual

Integrated
Circuit
Systems, Inc.
ICS843004www.DataSheet4U.com
FEMTOCLOCKS™LVCMOS/CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS843004 is a 4 output LVPECL synthesizer
ICS optimized to generate Fibre Channel reference
HiPerClockS™ clock frequencies and is a member of the
HiPerClocksTM family of high performance clock
solutions from ICS. Using a 26.5625MHz 18pF
parallel resonant crystal, the following frequencies can be
generated based on the 2 frequency select pins (F_SEL[1:0]):
212.5MHz, 187.5MHz, 159.375MHz, 156.25, 106.25MHz, and
53.125MHz.The ICS843004 uses ICS’ 3rd generation low phase
noise VCO technology and can achieve 1ps or lower typical
rms phase jitter, easily meeting Fibre Channel jitter requirements.
The ICS843004 is packaged in a small 24-pin TSSOP package.
FEATURES
• Four 3.3V LVPECL outputs
• Selectable crystal oscillator interface
or LVCMOS/LVTTL single-ended input
• Supports the following output frequencies: 212.5MHz,
187.5MHz, 159.375MHz, 156.25, 106.25MHz, 53.125MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal
(637KHz - 10MHz): 0.72ps (typical)
• RMS phase noise at 212.5MHz (typical)
Phase noise:
Offset
Noise Power
100Hz ............... -95.0 dBc/Hz
1KHz .............. -114.3 dBc/Hz
10KHz .............. -123.8 dBc/Hz
100KHz .............. -124.6 dBc/Hz
• Full 3.3V supply mode
• -30°C to 85°C ambient operating temperature
FREQUENCY SELECT FUNCTION TABLE
Input
Frequency
26.5625
26.5625
26.5625
26.5625
26.04166
23.4375
F_SEL1
0
Inputs
F_SEL0
M Divider
Value
0 24
0 1 24
10
24
1 1 24
0 1 24
0 0 24
N Divider
Value
3
4
6
12
4
3
Output
M/N Frequency
Divider Value (MHz)
8 212.5
6 159.375
4 106.25
2 53.125
6 156.25
8 187.5
BLOCK DIAGRAM
F_SEL[1:0] Pulldown
nPLL_SEL Pulldown
TEST_CLK Pulldown
26.5625MHz
XTAL_IN
OSC
XTAL_OUT
nXTAL_SEL Pulldown
1
0
2
Phase
Detector
VCO
637.5MHz
(w/26.5625MHz
Reference)
1
0
F_SEL[1:0]
0 0 ÷3
0 1 ÷4
1 0 ÷6
1 1 ÷12
M = 24 (fixed)
MR Pulldown
843004AG
www.icst.com/products/hiperclocks.html
1
PIN ASSIGNMENT
nQ1
Q1
VCCo
Q0
nQ0
MR
nPLL_SEL
nc
VCCA
F_SEL0
VCC
F_SEL1
1
2
3
4
5
6
7
8
9
10
11
12
24 nQ2
23 Q2
2 2 VCCO
21 Q3
20 nQ3
1 9 VEE
18 nc
17 nXTAL_SEL
16 TEST_CLK
1 5 VEE
14 XTAL_IN
13 XTAL_OUT
ICS843004
24-Lead TSSOP
4.40mm x 7.8mm x 0.92mm
package body
G Package
Q0 Top View
nQO
Q1
nQ1
Q2
nQ2
Q3
nQ3
REV. A NOVEMBER 18, 2004

1 page




ICS843004 pdf
843004AG
Integrated
Circuit
Systems, Inc.
ICS843004www.DataSheet4U.com
FEMTOCLOCKS™LVCMOS/CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
10
TYPICAL PHASE NOISE AT 53.125MHZ
53.125MHz
RMS Phase Jitter (Random)
637Khz to 10MHz = 0.98ps (typical)
Fibre Channel Jitter Filter
Raw Phase Noise Data
Phase Noise Result by adding
Fibre Channel Filter to raw data
100 1k 10k 100k 1M 10M 100M
OFFSET FREQUENCY (HZ)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
10
TYPICAL PHASE NOISE AT 106.25MHZ
106.25MHz
RMS Phase Jitter (Random)
637Khz to 10MHz = 0.81ps (typical)
Fibre Channel Jitter Filter
Raw Phase Noise Data
Phase Noise Result by adding
Fibre Channel Filter to raw data
100
1k
10k 100k
1M
OFFSET FREQUENCY (HZ)
www.icst.com/products/hiperclocks.html
10M
100M
REV. A NOVEMBER 18, 2004
5

5 Page





ICS843004 arduino
Integrated
Circuit
Systems, Inc.
ICS843004www.DataSheet4U.com
FEMTOCLOCKS™LVCMOS/CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
POWER CONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS843004.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS843004 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for VCC = 3.3V + 5% = 3.465V, which gives worst case results.
NOTE: Please refer to Section 3 for details on calculating power dissipated in the load.
Power (core)MAX = VCC_MAX * IEE_MAX = 3.465V * 135mA = 467.8mW
Power (outputs)MAX = 30mW/Loaded Output pair
If all outputs are loaded, the total power is 4 * 30mW = 120mW
Total Power_MAX (3.465V, with all outputs switching) = 467.8mW + 120mW = 587.8mW
2. Junction Temperature.
Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad and directly affects the reliability of the
device.The maximum recommended junction temperature for HiPerClockSTM devices is 125°C.
The equation for Tj is as follows: Tj = θJA * Pd_total + TA
Tj = Junction Temperature
θJA = Junction-to-Ambient Thermal Resistance
Pd_total = Total Device Power Dissipation (example calculation is in section 1 above)
TA = Ambient Temperature
In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance θJA must be used. Assuming a
moderate air flow of 1 meter per second and a multi-layer board, the appropriate value is 65°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.588W * 65°C/W = 123.2°C. This is below the limit of 125°C.
This calculation is only an example.Tj will obviously vary depending on the number of loaded outputs, supply voltage, air flow,
and the type of board (single layer or multi-layer).
TABLE 6. THERMAL RESISTANCE θJA FOR 24-PIN TSSOP, FORCED CONVECTION
θJA by Velocity (Meters per Second)
Multi-Layer PCB, JEDEC Standard Test Boards
0
70°C/W
1
65°C/W
2.5
62°C/W
843004AG
www.icst.com/products/hiperclocks.html
11
REV. A NOVEMBER 18, 2004

11 Page







PáginasTotal 16 Páginas
PDF Descargar[ Datasheet ICS843004.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
ICS8430002High-Performance Fractional-N Frequency SynthesizerIntegrated Device Technology
Integrated Device Technology
ICS843001FEMTO CLOCKS CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATORIntegrated Circuit Systems
Integrated Circuit Systems
ICS843001-21FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZERIntegrated Circuit Systems
Integrated Circuit Systems
ICS843001I-222.5V LVPECL FREQUENCY SYNTHESIZERIntegrated Circuit Systems
Integrated Circuit Systems

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar