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| Preliminary Information T73327 / 73327A / 73327B 15-36 MHz, 3.3V VCXO Applications * Crystal-driven clock source for low cost set top boxes General Description The TLSI T73327/73327A is a single-chip, low-jitter Voltage-Controlled-Crystal-Oscillator. The device accepts a 15 MHz-36 MHz crystal input and produces a low-jitter output at the same frequency. A 0V to +3.3V control signal is used to fine-tune the output clock frequency in the 120ppm range. Features * * * * +3.3V operating voltage Uses inexpensive pullable crystals 12mA drive capability at TTL levels Low Cost * * * * 240 ppm pull range (120 ppm) Excellent pull range linearity 8-pin SOIC, 8-pin MSOP packages available Alternate industry pinouts available Figure 1. Functional Block Diagram VDD VIN X2 15 MHz - 36MHz Pullable Crystal X1 Oscillator Output Buffer CLK GND T73327/73327A/73327BPI Page 1 Rev J, January 14, 2005 TLSI Incorporated, 770 Park Avenue, Huntington NY 11743 * (631) 755-7005 * Fax 631-755-7626 * www.tlsi.com T73327/T73327A/T73327B Figure 2. Pin Configuration 8-pin SOIC/MSOP X1 VDD** VIN GND 1 2 3 4 8 7 Preliminary Information 8-pin SOIC/MSOP X2 GND NC** CLK X1 NC VIN GND 1 2 3 4 8 7 8-pin SOIC/MSOP X2 NC VDD CLK X1 VDD VIN GND 1 2 3 4 8 7 X2 NC CLK NC T73327 6 5 T73327A 6 5 T73327B 6 5 Table 1. Pin Description Name 73327 X1 VDD** VIN GND CLK NC** NC X2 1 2** 3 4, 7 5 6** 8 8-pin SOIC/MSOP (See pages 4 & 5 for package outlines & ordering information) Type 73327B 1 2 3 4 6 5 7 8 Xi P I P O NC NC Xi Crystal connection. Connect to a 15 MHz - 36MHz pullable crystal This pin can alternately be used to connect VDD instead of pin 6 or left unconnected (for T73327 only). Tuning control input. Zero to +3.3V signal controls the frequency of the VCXO. Connect to ground. Clock output This pin can alternately be used to connect VDD instead of pin 2 or left unconnected (for T73327 only). Do not connect Crystal connection. Connect to a 15 MHz - 36 MHz pullable crystal. Pin No. 73327A 1 6 3 4 5 2, 7 8 Description Legend: I = Input O = Output P = Power supply connection Xi = Crystal connections NC = No connection **Note: On the T73327 only, both pin 2 and pin 6 are internally connected to VDD. Either pin or both can safely be connected to VDD without damaging the part. Alternately, at the user's option, one pin may be used for VDD with the other pin being left unconnected (NC). Table 2. Absolute Maximum Ratings Parameter Supply voltage, VDD Inputs and Clock Outputs Soldering Temperature Storage temperature Conditions Referenced to GND Referenced to GND Max of 10 seconds Min -0.5 Typ Max 7 VDD+0.5 +260 Units V V C C -65 +150 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only and correct functional operation of the device at these or any other conditions above those listed in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. T73327/73327A/73327BPI Page 2 Rev J, January 14, 2005 TLSI Incorporated, 770 Park Avenue, Huntington NY 11743 * (631) 755-7005 * Fax 631-755-7626 * www.tlsi.com T73327/T73327A/T73327B Table 3. Operating Conditions Parameter Operating Voltage, VDD Input High Voltage, VIH, X1 pin only Input Low Voltage, VIL, X1 pin only Operating Temperature VCXO control voltage, VIN 0 0 Preliminary Information Conditions Min +3.135 +2.5 Typ +3.3 Max +3.465 Units V V +0.4 +70 +3.3 V C V Table 4. DC Electrical Characteristics TA = 0C to +70C, VDD = +3.135 V to +3.465 V Parameter Output High Voltage, VOH Output Low Voltage, VOL Operating Supply Current, IDD Short Circuit Current Input Capacitance Note: 1. Typical values are at VDD = 3.3V and +25C Condition IOH = -12mA IOL = 12mA No Load, 27 MHz Each output Min 2.4 Typ(1) Max 0.4 Units V V mA mA pF 14.0 50 7 20.0 Table 5. AC Electrical Characteristics TA = 0C to +70C, VDD = +3.135 V to +3.465 V Symbol fosc tr tf tod Lin Parameter Input Crystal Frequency Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle Pull Range Linearity (2) Condition +0.8 to +2.0V +2.0 to +0.8V At VDD/2 VIN = 0.1 VDD ~ 0.9 VDD Min 15 Typ(1) 27 Max 36 1.5 1.5 Units MHz ns ns % % % ps 45 50 55 5 5 Frequency vs Supply voltage tjit (pk - pk) Maximum Absolute Jitter (Peak to Peak) Phase Noise 27 MHz @ 10 KHz 27 MHz @ 100 KHz fPULL Note: 1. 2. CL = 15pF 50 -154 -156 100 120 dBc/Hz dBc/Hz ppm Output frequency pullability Typical values are at VDD = +3.3V and +25C Mil-PRF-55310D 4.8.31.5 Deviation Linearity 0V VIN +3.3V T73327/73327A/73327BPI Page 3 Rev J, January 14, 2005 TLSI Incorporated, 770 Park Avenue, Huntington NY 11743 * (631) 755-7005 * Fax 631-755-7626 * www.tlsi.com T73327/T73327A/T73327B Preliminary Information Table 6. Pullable Crystal Specifications Parameter Correlation (Load) Capacitance Capacitance Ratio Equivalent Series Resistance Symbol CL CO/C1 ESR Value 18 pF (typ) 240 max 30 max Figure 3. Package Outline (8-pin SOIC) T73327/73327A/73327BPI Page 4 Rev J, January 14, 2005 TLSI Incorporated, 770 Park Avenue, Huntington NY 11743 * (631) 755-7005 * Fax 631-755-7626 * www.tlsi.com T73327/T73327A/T73327B Figure 4. Package Outline (8-pin MSOP) Preliminary Information Table 7. Ordering Information No. of Pins 8 8 8 8 8 8 Part Number T73327-SO8 T73327A-SO8 T73327B-SO8 T73327-SO8-TNR T73327A-SO8-TNR T73327B-SO8-TNR T73327-MO8 T73327A-MO8 T73327B-MO8 T73327-MO8-TNR T73327A-MO8-TNR T73327B-MO8-TNR T73327-DIE T73327-DPW Marking T73327 T73327A T73327B T73327 T73327A T73327B T73327 T73327A T73327B T73327 T73327A T73327B N/A N/A Shipping/Packaging Tubes Tape & Reel Tubes Tape & Reel Die in Waffle Pack Die in Probed Wafer Package SOIC SOIC MSOP MSOP N/A N/A Temperature 0C to +70C 0C to +70C 0C to +70C 0C to +70C 0C to +70C 0C to +70C T73327/73327A/73327BPI Page 5 Rev J, January 14, 2005 TLSI Incorporated, 770 Park Avenue, Huntington NY 11743 * (631) 755-7005 * Fax 631-755-7626 * www.tlsi.com |
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