ICS840004AG-11LF IDT, Integrated Device Technology Inc, ICS840004AG-11LF Datasheet
ICS840004AG-11LF
Specifications of ICS840004AG-11LF
Available stocks
Related parts for ICS840004AG-11LF
ICS840004AG-11LF Summary of contents
Page 1
... Block Diagram Pullup OE Pullup F_SEL 25MHz XTAL_IN Phase OSC Detector XTAL_OUT M = ÷25 (fixed) ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 Features • Four single-ended LVCMOS/LVTTL outputs Ω 17 • Crystal oscillator interface • Input frequency range: 22.4MHz to 28MHz • Output frequency range: 56MHz - 140MHz • ...
Page 2
... C Power Dissipation Capacitance PD R Input Pullup Resistor PULLUP R Output Impedance OUT ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER Type Description Input Pullup Frequency select pin. LVCMOS/LVTTL interface levels. Unused No connect. Output enable pin. When HIGH, the outputs are active. When LOW, the ...
Page 3
... NOTE 1: Outputs terminated with 50 Table 4. Crystal Characteristics Parameter Mode of Oscillation Frequency Equivalent Series Resistance (ESR) Shunt Capacitance Drive Level NOTE: Characterized using an 18pF parallel resonant crystal. ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER Rating 4.6V -0. -0. 73.2°C/W (0 lfpm) -65°C to 150° 3.3V ± ...
Page 4
... NOTE 1: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at V NOTE 2: This parameter is defined in accordance with JEDEC Standard 65. NOTE 3: Please refer to the Phase Noise Plots. ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER = V = 3.3V ± 5 0° ...
Page 5
... ICS840004-11 Data Sheet Typical Phase Noise at 62.5MHz ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER 1.875MHz to 20MHz = 0.54ps (typical) Raw Phase Noise Data Phase Noise Result by adding a 1Gb Ethernet filter to raw data Offset Frequency (Hz) 5 1Gb Ethernet Filter 62.5MHz RMS Phase Jitter (Random) ...
Page 6
... ICS840004-11 Data Sheet Typical Phase Noise at 125MHz ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER 1.875MHz to 20MHz = 0.70ps (typical) Raw Phase Noise Data Phase Noise Result by adding a 1Gb Ethernet filter to raw data Offset Frequency (Hz) 6 1Gb Ethernet Filter 125MHz RMS Phase Jitter (Random) ...
Page 7
... Output Skew V DDO Q0: PERIOD t PW odc = t PERIOD Output Duty Cycle Pulse Width/Period ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER SCOPE Qx RMS Phase Jitter Output Rise/Fall Time 2 x 100% 7 Phase Noise Plot Offset Frequency RMS Jitter = Area Under the Masked Phase Noise Plot ...
Page 8
... V DD requires that an additional 10Ω resistor along with a 10µF bypass capacitor be connected to the V pin. DDA ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER Outputs: LVCMOS Outputs All unused LVCMOS outputs can be left floating. We recommend that there is no trace attached. ...
Page 9
... Figure 3. General Diagram for LVCMOS Driver to XTAL Input Interface ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER 18pF Parallel Crystal Figure 2. Crystal Input Interface the transmission line impedance. In addition, matched termination at the crystal input will attenuate the signal in half. This can be done in one of two ways. First, R1 and R2 in parallel should equal the transmission line impedance. For most 50Ω ...
Page 10
... NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs. Transistor Count The transistor count for ICS840004-11: 1795 Package Outline and Package Dimensions Package Outline - G Suffix for 20 Lead TSSOP ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER θ by Velocity JA ...
Page 11
... IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER Package ...
Page 12
... Revision History Sheet Rev Table Page ICS840004AG-11 REVISION A SEPTEMBER 16, 2009 FEMTOCLOCK™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER Description of Change AC Characteristics Tables - added Thermal note. Added LVCMOS to XTAL Interface section. Ordering Information Table - deleted “ICS” prefix from Part/Order Number column. Converted datasheet format. 12 Date 9/16/09 ...
Page 13
ICS840004-11 Data Sheet 6024 Silver Creek Valley Road Sales 800-345-7015 (inside USA) San Jose, California 95138 +408-284-8200 (outside USA) Fax: 408-284-2775 www.IDT.com/go/contactIDT DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications ...