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 • 240 ppm pull range (±120 ppm) • Uses inexpensive pullable crystals • Excellent pull range linearity • 12mA drive capability at TTL levels • 8-pin SOIC, 8-pin MSOP packages available • Low Cost • Alternate industry pinouts available Figure 1. Functional Block Diagram VDD VIN X2 15 MHz – 36MHz Pullable Crystal Output Buffer X1 CLK Oscillator 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 Preliminary Information Figure 2. Pin Configuration 8-pin SOIC/MSOP 8-pin SOIC/MSOP 8-pin SOIC/MSOP X1 1 8 X2 X1 1 8 X2 X1 1 8 X2 VDD** 2 7 GND NC 2 7 NC VDD 2 7 NC 6 NC** VIN 3 6 VDD VIN 3 6 CLK 5 CLK GND 4 5 CLK GND 4 5 NC VIN 3 GND 4 T73327 T73327B 8-pin SOIC/MSOP (See pages 4 & 5 for package outlines & ordering information) Table 1. Pin Description Name T73327A Pin No. Type Description 73327 73327A 73327B 1 1 1 Xi Crystal connection. Connect to a 15 MHz - 36MHz pullable crystal 2** 6 2 P This pin can alternately be used to connect VDD instead of pin 6 or left unconnected (for T73327 only). 3 3 3 I Tuning control input. Zero to +3.3V signal controls the frequency of the VCXO. GND 4, 7 4 4 P Connect to ground. CLK 5 5 6 O Clock output NC** 6** - 5 NC This pin can alternately be used to connect VDD instead of pin 2 or left unconnected (for T73327 only). NC - 2, 7 7 NC Do not connect X2 8 8 8 Xi Crystal connection. Connect to a 15 MHz – 36 MHz pullable crystal. X1 VDD** VIN 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 Conditions Supply voltage, VDD Referenced to GND Inputs and Clock Outputs Referenced to GND Soldering Temperature Max of 10 seconds Storage temperature Min -0.5 -65 Typ Max Units 7 V VDD+0.5 V +260 °C +150 °C 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 Preliminary Information Table 3. Operating Conditions Parameter Conditions Operating Voltage, VDD Input High Voltage, VIH, X1 pin only Min Typ Max Units +3.135 +3.3 +3.465 V +2.5 V Input Low Voltage, VIL, X1 pin only +0.4 V Operating Temperature 0 +70 °C VCXO control voltage, VIN 0 +3.3 V Table 4. DC Electrical Characteristics TA = 0°C to +70°C, VDD = +3.135 V to +3.465 V Parameter Condition Min Output High Voltage, VOH IOH = -12mA 2.4 Output Low Voltage, VOL IOL = 12mA Operating Supply Current, IDD Short Circuit Current Typ(1) Max Units V 0.4 V 20.0 mA No Load, 27 MHz 14.0 Each output ±50 mA 7 pF Input Capacitance Note: 1. Typical values are at VDD = 3.3V and +25°C Table 5. AC Electrical Characteristics TA = 0°C to +70°C, VDD = +3.135 V to +3.465 V Symbol Parameter Condition Min Typ(1) Max Units 15 27 36 MHz fosc Input Crystal Frequency tr Output Clock Rise Time +0.8 to +2.0V 1.5 ns tf Output Clock Fall Time +2.0 to +0.8V 1.5 ns tod Output Clock Duty Cycle 55 % 5 % 5 % CL = 15pF 50 ps 27 MHz @ 10 KHz -154 dBc/Hz 27 MHz @ 100 KHz -156 dBc/Hz Lin Pull Range Linearity At VDD/2 (2) 45 50 VIN = 0.1 VDD ~ 0.9 VDD Frequency vs Supply voltage tjit (pk – pk) Maximum Absolute Jitter (Peak to Peak) Phase Noise fPULL Note: 1. 2. 0V ≤VIN ≤ +3.3V Output frequency pullability ±100 ±120 Typical values are at VDD = +3.3V and +25°C Mil-PRF-55310D 4.8.31.5 Deviation Linearity 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 ppm T73327/T73327A/T73327B Preliminary Information Table 6. Pullable Crystal Specifications Parameter Symbol Value CL 18 pF (typ) Capacitance Ratio CO/C1 240 max Equivalent Series Resistance ESR 30 Ω max Correlation (Load) Capacitance 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 Preliminary Information Figure 4. Package Outline (8-pin MSOP) Table 7. Ordering Information 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 T73327/73327A/73327BPI Marking T73327 T73327A T73327B T73327 T73327A T73327B T73327 T73327A T73327B T73327 T73327A T73327B N/A Shipping/Packaging Tubes No. of Pins 8 Package SOIC Temperature 0°C to +70°C Tape & Reel 8 SOIC 0°C to +70°C Tubes 8 MSOP 0°C to +70°C Tape & Reel 8 MSOP 0°C to +70°C Die in Waffle Pack 8 N/A 0°C to +70°C N/A Die in Probed Wafer 8 N/A 0°C to +70°C 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