CF5018 series 2.5V 3rd Overtone Crystal Oscillator Module ICs OVERVIEW The CF5018 series are crystal oscillator ICs that operate from 2.5V. Devices are available that provide 3rd overtone oscillation in the range 30MHz to 80MHz. They are optimized for 2.5V operation, resulting in stable oscillator startup characteristics and output duty stability. They feature a large reduction in chip surface area compared to existing devices, making possible the construction of small-sized crystal oscillator. FEATURES ■ ■ ■ ■ ■ ■ ■ 2.25 to 2.75V operating supply voltage range 30MHz to 80MHz oscillation frequency range (varies with version) – 40 to 85°C operating temperature range Oscillation capacitors CG, CD built-in Inverter amplifier feedback resistor built-in Standby function • High impedance in standby mode, oscillator stops Low standby current • Power-saving pull-up resistor built-in ■ ■ ■ ■ ■ ■ ■ fO output frequency (oscillation frequency) 8mA output drive capability (VDD = 2.25V) CMOS output duty level (1/2VDD) 50 ± 5% output duty (at 1/2VDD) 30pF output load Molybdenum-gate CMOS process Chip form (CF5018AL×) SERIES CONFIGURATION Operating supply voltage range [V] Built-in capacitance [pF] Recommended operating frequency range1 [MHz] gm ratio CF5018ALA 30 to 36 0.25 CF5018ALB 36 to 40 0.50 Version CG CD Rf [kΩ] 4.7 3.5 15 CF5018ALC 2.25 to 2.75 40 to 50 0.75 CF5018ALD 50 to 60 1.00 CF5018ALE 60 to 80 1.50 8 3.5 3.0 10 3.5 1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscillator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting conditions, so the oscillation characteristics of components must be carefully evaluated. ORDERING INFORMATION Device Package CF5018AL×–2 Chip form SEIKO NPC CORPORATION —1 CF5018 series PAD LAYOUT (Unit: µm) (720,730) VDD HA5018 Y Q NPC VSS INHN (0,0) XTN XT X Chip size: 0.72 × 0.73mm Chip thickness: 220 ± 30µm PAD size: 90µm Chip base: VDD level PIN DESCRIPTION and PAD DIMENSIONS Pad dimensions [µm] Name I/O Description X Y INHN I Output state control input. High impedance when LOW (oscillator stops). Power-saving pull-up resistor built-in. 151 277 XT I Amplifier input 238 131 XTN O Amplifier output 503 131 VSS – Ground 588 345 Q O Output. Output frequency. High impedance in standby mode 588 598 VDD – Supply voltage 131 598 Crystal connection pins. Crystal is connected between XT and XTN. BLOCK DIAGRAM VDD VSS XTN CG Rf1 Cf CD XT Q Rf2 INHN INHN = LOW active SEIKO NPC CORPORATION —2 CF5018 series SPECIFICATIONS Absolute Maximum Ratings VSS = 0V Parameter Symbol Condition Rating Unit Supply voltage range VDD −0.5 to +7.0 V Input voltage range VIN −0.5 to VDD + 0.5 V Output voltage range VOUT −0.5 to VDD + 0.5 V Operating temperature range Topr −40 to +85 °C Storage temperature range TSTG −65 to +150 °C Output current IOUT 20 mA Rating Unit Recommended Operating Conditions VSS = 0V, f ≤ 80MHz, CL ≤ 30pF Parameter Symbol Condition Supply voltage range VDD 2.25 to 2.75 V Input voltage range VIN VSS to VDD V TOPR −40 to +85 °C Operating temperature range SEIKO NPC CORPORATION —3 CF5018 series Electrical Characteristics VDD = 2.25 to 2.75V, VSS = 0V, Ta = −40 to +85°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max HIGH-level output voltage VOH Q: Measurement cct 1, VDD = 2.25V, IOH = 8mA 1.65 1.95 – V LOW-level output voltage VOL Q: Measurement cct 2, VDD = 2.25V, IOL = 8mA – 0.3 0.4 V HIGH-level input voltage VIH INHN 0.7VDD – – V LOW-level input voltage VIL INHN – – 0.3VDD V – 10 µA IZ Q: Measurement cct 2, INHN = LOW VOH = VDD – Output leakage current VOL = VSS – – 10 µA CF5018ALA f = 30MHz – 6 12 mA CF5018ALB f = 40MHz – 8 16 mA CF5018ALC f = 50MHz – 10 20 mA CF5018ALD f = 60MHz – 11 22 mA CF5018ALE f = 80MHz – 15 30 mA – – 3 µA 2 6 12 MΩ 20 100 200 kΩ CF5018ALA 3.99 4.7 5.41 kΩ CF5018ALB 2.97 3.5 4.03 kΩ CF5018ALC 2.97 3.5 4.03 kΩ CF5018ALD 2.55 3.0 3.45 kΩ CF5018ALE 2.97 3.5 4.03 kΩ Current consumption Standby current INHN pull-up resistance IDD IST RUP1 Measurement cct 3, load cct 1, INHN = open, CL = 30pF Measurement cct 3, INHN = LOW Measurement cct 4 RUP2 AC feedback resistance Rf1 Design value. A monitor pattern on a wafer is tested. DC feedback resistance Rf2 Measurement cct 5 50 – 150 kΩ AC feedback capacitance Cf Design value. A monitor pattern on a wafer is tested. 8.5 10 11.5 pF CG Design value. A monitor pattern on a wafer is tested. 6.8 8 9.2 pF CF5018ALA CF5018ALB CF5018ALC CF5018ALD 12.7 15 17.3 pF CF5018ALE 8.5 10 11.5 pF Built-in capacitance CD Design value. A monitor pattern on a wafer is tested. SEIKO NPC CORPORATION —4 CF5018 series Switching Characteristics VDD = 2.25 to 2.75V, VSS = 0V, Ta = −40 to +85°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max Output rise time tr Measurement cct 3, load cct 1, 0.1VDD to 0.9VDD , CL = 30pF – 3 6 ns Output fall time tf Measurement cct 3, load cct 1, 0.9VDD to 0.1VDD , CL = 30pF – 3 6 ns Measurement cct 3, load cct 1, VDD = 2.5V, Ta = 25°C, f = 80MHz , CL = 30pF 45 – 55 % – – 100 ns – – 100 ns Output duty cycle1 Duty Output disable delay time2 tPLZ Output enable delay time2 tPZL Measurement cct 6, load cct 1, VDD = 2.5V, Ta = 25°C, CL = 15pF 1. The duty cycle characteristic is checked the sample chips of each production lot. 2. Oscillator stop function is built-in. When INHN goes LOW, normal output stops. When INHN goes HIGH, normal output is not resumed until after the oscillator start-up time has elapsed. Current consumption and Output waveform with NPC’s standard crystal Cb L Ca R f [MHz] R [Ω] L [mH] Ca [fF] Cb [pF] 30 18.62 16.24 1.733 5.337 40 20.53 11.34 1.396 3.989 50 22.17 7.40 1.370 4.105 60 15.37 3.83 1.836 5.191 70 25.42 4.18 1.254 5.170 85 20.58 5.22 0.671 4.965 FUNCTIONAL DESCRIPTION Standby Function When INHN goes LOW, the oscillator stops and the oscillator output on Q becomes high impedance. INHN Q Oscillator HIGH (or open) fO output frequency Normal operation LOW High impedance Stopped Power-saving Pull-up Resistor The INHN pull-up resistance changes in response to the input level (HIGH or LOW). When INHN goes LOW (standby state), the pull-up resistance becomes large to reduce the current consumption during standby. SEIKO NPC CORPORATION —5 CF5018 series MEASUREMENT CIRCUITS Measurement cct 1 Measurement cct 4 C1 Signal Generator VDD XT VDD XT Q Q XTN INHN R1 VSS XTN INHN R2 VSS VPR VDD VOH 0V 2Vp-p, 10MHz sine wave input signal C1: 0.001µF R1: 50Ω R2: 206Ω IPR VDD IPR (VPR = V SS) RUP2 = VDD VPR IPR (VPR = 0.7VDD) V Q output RUP1 = A Measurement cct 5 Measurement cct 2 IZ, IOL XT VDD IZ XTN INHN A VSS V Rf = Q Q XTN INHN VDD XT VDD IRf VSS A VOH VOL IRf Measurement cct 6 Measurement cct 3 A XT IDD IST Signal Generator VDD XT Q R1 VDD X'tal C1 XTN INHN VSS Q XTN INHN VSS 2Vp-p, 10MHz sine wave input signal C1: 0.001µF R1: 50Ω Load cct 1 Q output CL (Including probe capacitance) SEIKO NPC CORPORATION —6 CF5018 series Switching Time Measurement Waveform Output duty level, tr, tf Q output 0.9VDD 0.9VDD 0.1VDD DUTY measurement voltage (0.5V DD ) 0.1VDD TW tr tf Output duty cycle DUTY measurement voltage (0.5V DD) Q output TW DUTY= TW/ T T 100 (%) Output Enable/Disable Delay when the device is in standby, the oscillator stops. When standby is released, the oscillator starts and stable oscillator output occurs after a short delay. VIH INHN VIL tPLZ tPZL INHN input waveform tr = tf 10ns Q output SEIKO NPC CORPORATION —7 CF5018 series Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan Telephone: +81-3-6667-6601 Facsimile: +81-3-6667-6611 http://www.npc.co.jp/ Email: [email protected] NC0215BE 2006.04 SEIKO NPC CORPORATION —8