M672 ICST | Alldatasheet
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M672 Datasheet Rev 0.2 2 of 4 Revised 07Apr2004 Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400 Integrated Circuit Systems, Inc. M672 VCSO WITH SELECTABLE OUTPUT FREQUENCY DIVIDER Preliminary Information PIN DESCRIPTIONS PARAMETER MEASUREMENT INFORMATION Output Rise and Fall Time Figure 3: Output Rise and Fall Time Output Duty Cycle Figure 4: Output Duty Cycle Number Name I/O Configuration Description 1V I N Input Frequency control input.
2 P_SEL Input Internal pull-up resistor 1
P Divider selection: Logic 0 selects P=1, so that Fout = Fvcso. Logic 1 selects P=d, so that Fout = 1/d Fvcso.2 3G N D Ground Power supply ground connection. FOUT nFOUT Output No internal terminator Clock output pair. Differential LVPECL. 6V C C Power Power supply connection, connect to + 3.3V. Table 2: Pin Descriptions Note 1: See “P Select Pull-up” in Table 5, DC Characteristics on pg. 3. Note 2: The P divider value d (4, 8, or 2) is specified as part of the order number. Format is M672-d-xx. See Ordering Information on pg. 4. ABSOLUTE MAXIMUM RATINGS1 Note 1: 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 Recommended Conditions of Operation, DC Characteristics, or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. Symbol Parameter Rating Unit VI Inputs -0.5 to VCC +0.5 V VO Outputs -0.5 to VCC +0.5 V VCC Power Supply Voltage 4.6 V TS Storage Temperature -55 to +125 oC Table 3: Absolute Maximum Ratings RECOMMENDED CONDITIONS OF OPERATION Symbol Parameter Min Typ Max Unit VCC Positive Supply Voltage 2.97 3.3 3.63 V TA Ambient Operating Temperature -40 25 +85 oC Table 4: Recommended Conditions of Operation 20% 80% tR 20% tF 80% Clock Outputs VP-P tPW tPERIOD (Output Pulse Width) tPERIOD tPWodc = nFOUT FOUT
M672 Datasheet Rev 0.2 3 of 4 Revised 07Apr2004 Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400 M672 VCSO WITH SELECTABLE OUTPUT FREQUENCY DIVIDER Preliminary Information Integrated Circuit Systems, Inc. ELECTRICAL SPECIFICATIONS DC Characteristics Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, Fvcso = 622.08, 311.04, or 155.52 MHz, Outputs terminated into 180Ω to ground Symbol Parameter Pin Min Typ Max Unit Power Supply VCC Positive Supply Voltage VCC 2.97 3.3 3.63 V ICC Power Supply Current 85 125 mA Control Voltage VIN Input Control Voltage Range VIN 0 3.3 V VIN Input Impedence 100 kΩ P Select Pull-up1 Note 1: Internally pulled up to Logic 1 (Fout = 1/d Fvcso) if left unselected. VIH Input High Voltage P_SEL 2 Vcc + 0.3 V VIL Input Low Voltage -0.3 0.8 V IIH Input High Current 5 µA IIL Input Low Current -150 µA Rpullup Internal Pull-up Resistor 51 kΩ Differential Outputs VOH Output High Voltage FOUT, nFOUT Vcc - 0.98 Vcc - 0.75 V VOL Output Low Voltage Vcc - 1.95 Vcc - 1.63 V VP-P Peak to Peak Output Voltage2 Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 2. 0.450 0.625 0.85 VP-P IOUT Output Current 20 mA Table 5: DC Characteristics AC Characteristics Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, Fvcso = 622.08, 311.04, or 155.52 MHz, Outputs terminated into 180Ω to ground Symbol Parameter Min Typ Max Unit Notes Control Voltage VIN Modulation Bandwidth VIN 500 kHz Output FOUT Output Frequency Range 60 700 MHz Note 1: Also fully meets ±50 ppm minimum pull- range specification that is commonly required. ±100 ppm fSTAB Frequency Stability 100 ppm p-p At any givin VIN LIN Tuning Linearity 6 % VIN = 0.3 to 3.0V Best fit straight line KVCO VCO Gain @622.08MHz 400 ppm/V VIN = 0.3 to 3.0V Non-harmonic Spurious -50 -77 dBc Φ n SSB (single sideband) Phase Noise, offset from carrier 622.08MHz 100Hz Offset -48 dBc/Hz 1kHz Offset -75 dBc/Hz 10kHz Offset -99 dBc/Hz 100kHz Offset -124 dBc/Hz 1MHz Offset -142 dBc/Hz J(t) Jitter (rms) 622.08MHz 12kHz to 20MHz 0.30 ps rms 50kHz to 80MHz 0.18 ps rms odc Output Duty Cycle 2 Note 2: See Parameter Measurement Information on pg. 2. 45 55 % tR Output Rise Time 2 for FOUT, nFOUT 275 425 ps 20% to 80% tF Output Fall Time 2 for FOUT, nFOUT 275 425 ps 20% to 80% Table 6: AC Characteristics