PI6CX100-27 27 MHz 3.3V VCXO for Set-Top Box Applications Features Description • • • • • • The PI6CX100-27 is a low-cost, high-performance 3.3V VCXO, designed to replace expensive VCXO modules. The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3.3V input voltage to cause clocks to vary by ±120ppm. This device uses an inexpensive external pullable crystal at 27 MHz to produce the same output frequency. 3.3V operating voltage Uses an inexpensive external crystal On-chip VCXO with pull range of 240ppm VCXO tuning voltage from 0 to 3.3V 10mA output drive at CMOS levels Available in SOIC package The PI6CX100-27 is designed for Set-Top Box applications. Block Diagram VIN Pin Configuration X1 1 8 X2 NC 2 8-Pin 7 NC VIN 3 6 VDD GND 4 5 CLKOUT Voltage Controlled X1 Crystal Output Buffer CLKOUT Oscillator X2 W Pin Description Pin Name Number Type Description X1, X2 1, 8 I Crystal Connection NC 2 VIN 3 I Voltage Input to VCXO GND 4 PWR Ground CLKOUT 5 O Clock Output VDD 6 PWR Power Supply(2) No Connection Note: 1. 0.1µF or 0.01µF bypass capacitor is required. 1 PS8576C 09/22/04 PI6CX100-27 27 MHz 3.3V VCXO for Set-Top Box Applications Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Storage Temperature .........................................–55°C to 125°C Ambient Temperature ........................................–40°C to 85°C Supply Voltage VDD ..............................................–0.5V to 7V Inputs/Outputs Voltage.............................. –0.5V to VDD +0.5V Output Current ..................................................................10mA Soldering Lead Temperature (10s)................................... 260°C Junction Temperature .......................................–50°C to 150°C DC Electrical Characteristics (Unless otherwise specified, VDD = 3.3V, fO = 27 MHz, VIN = 1.65V, Load = 15pF, TA = 25oC) Symbol Desciption Test Condidtion VDD Operating Voltage VOH Output High Volage IOH =-12mA VOL Output Low Voltage IOL = -12mA IOH Output High Current VOH = VDD-0.5V IOL Output Low Current VOL =0.5V IDD Supply Current CL = 15pF IOZ Output Off-leakage RS Negative Resistance fO Input Frequency CL Output load Capacitance Min. Typ. Max. 3.135 3.3 3.465 2.8 Units V 0.5 -11 4 -4 12 mA 5 10 VIN = 0V -150 20 µA Ω 27 30 MHz 15 30 pF Typ. Max. Units 1.5 6 ns 55 % AC Electrical Characteristics (Unless otherwise specified, fO = 27 MHz, Load = 15pF, TA = 25oC) Symbol TR/Tf Desciption Test Condidtion Rise / Fall Time 0.1VDD - 0.9VDD Td Duty Cycle 0.5VDD ∆f Rull Range VIN = 0 - VDD Tj Cycle-to-Cycle Jitter Lin Min. 45 ±120 ppm CL = 15pf 50 ps Linearity VIN = 0.1VDD - 0.9 VDD ±10 % Oscillator Start Time VDD = 0.9VDD Trigger 1.5 2 10 PS8576C ms 09/22/04 PI6CX100-27 27 MHz 3.3V VCXO for Set-Top Box Applications Pullability Characteristics 160 140 120 100 80 ∆f (ppm) 60 40 20 ATS 0 -20 . . . . . . . HC49/U -40 -60 -80 -100 -120 -140 -160 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 VIN (V) Recommended Crystal Specifications Description Mode of Oscillation Frequency Range Frequency Tolerance Tenperature plus Aging Stability` Operating Temperature C0 /C1 Load Capacitance (CL) Equivalent Series Resistance (ESR) Crystal Fundamental 27.000 MHz ±30ppm ±50ppm -20°C to +70°C 240 (max.) 18pF 35Ω (max.) Measurement Circuit VIN X1 X2 NC NC VIN VDD GND 3.3V CLKOUT 0.01µF CL = 15pF Note: 1. 0.1µF or 0.01µF bypass capacitor is required. 2. Crystal frequency is 27.000 MHz. 3 PS8576C 09/22/04 PI6CX100-27 27 MHz 3.3V VCXO for Set-Top Box Applications Packaging Mechanical: Plastic 8-pin SOIC (W) 8 3.78 3.99 .149 .157 4.80 .189 5.00 .196 1 .053 .068 .016 REF .026 0.406 0.660 .0099 .0196 1.35 1.75 SEATING PLANE 0-8˚ .0075 .0098 .2284 .2440 5.80 6.20 .013 .020 0.330 0.508 1.27 X.XX X.XX 0.19 0.25 0.40 .016 1.27 .050 .0040 0.10 .0098 0.25 .050 BSC 0.25 x 45˚ 0.50 DENOTES DIMENSIONS IN MILLIMETERS Ordering Information Ordering Code Package Code Package Type Operating Range PI6CX100-27W W 8-pin, 150-mil SOIC PI6CX100-27WE W Pb-free & Green 8-pin, 150-mil SOIC Industrial Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. Number of Transistors = TBD Pericom Semiconductor Corporation • 1-800-435-2336 • 4 www.pericom.com PS8576C 09/22/04