5072 series 155MHz VCXO Module IC OVERVIEW The 5072 series is 155MHz VCXO IC. It incorporates a 155.52MHz fundamental frequency oscillator circuit and a differential LV-PECL output circuit on a single chip. The oscillator circuit features characteristics optimized for VCXO operation, and includes a varicap connection pin. The 5072 series can be configured with few external components, making them ideal as miniature VCXO modules. FEATURES ■ ■ ■ ■ 3.0 to 3.6V operating supply voltage range 70MHz to 200MHz oscillator frequency range Differential LV-PECL output 50 ± 5% output duty (measured at the output crossing point) ■ ■ ■ Output enable function −40 to +85°C operating temperature range Chip form (CF5072×A) ORDERING INFORMATION Device Package CF5072×A−1 Chip form SEIKO NPC CORPORATION —1 5072 series BLOCK DIAGRAM 5072BA VDD1 VDD2 XIN XR OUTN Oscillator Circuit Differential Converter Circuit Output Pre-buffer LV-PECL Output Circuit VC OUT XC VSS2 VSS1 Pull-up OE 5072CA VDD1 VDD2 XIN XR OUTN Oscillator Circuit Differential Converter Circuit Output Pre-buffer LV-PECL Output Circuit VC OUT XC VSS2 VSS1 OE Pull-down ESD sensitive device: The XR pin is not equipped with a protection circuit. Accordingly, its electrostatic withstand voltage is significantly lower than that of the other pins. ESD breakdown prevention handling precautions are strongly recommended. SEIKO NPC CORPORATION —2 5072 series PAD LAYOUT (Unit: µm) (1820,1000) VDD2 9 10 NC XR VC VSS1 11 12 13 1 8 DB5072 A Y XIN XC (0,0) 2 7 VDD1 6 OUTN 5 OUT 4 VSS2 3 OE TEST X Chip size: 1.82 × 1.00mm Chip thickness: 300 ± 30µm Pad size: 110 × 100µm (TEST pin only = 90 × 90µm) Chip base: VSS potential PAD DESCRIPTION AND DIMENSIONS Pad No. Name Pad dimensions [µm] I/O*1 Pad size [µm] Function X Y X Y 1 VSS1 – Oscillator ground 125 135 110 100 2 TEST I IC test pin (leave open circuit for normal operation) 1283 160 90 90 3 OE I Output enable 5072BA: pull-up resistor built-in 5072CA: pull-down resistor built-in 1695 135 110 100 4 VSS2 – Ground 1695 268 110 100 5 OUT O Differential LV-PECL non-inverting output (true) 1695 460 110 100 6 OUTN O Differential LV-PECL inverting output (complementary) 1695 673 110 100 7 VDD1 – ECL buffer supply 1695 865 110 100 8 VDD2 – Supply 643 865 100 110 9 XIN I Crystal unit connection 125 828 110 100 10 XC O Varicap anode connection 125 708 110 100 11 NC – No connection (leave open circuit for normal operation) 125 495 110 100 I Varicap cathode connection and inductor connection 125 375 110 100 I Control voltage pin 125 255 110 100 12 13 *2 XR VC *1. I: Input, O: Output *2. The XR pin electrostatic withstand voltage is weaker than the other pins. The electrostatic withstand voltage of pins, excluding XR, is the same as that for existing NPC devices. SEIKO NPC CORPORATION —3 5072 series ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply voltage range*1 VDD Input voltage range*1 *2 VIN Output voltage range*1 *2 VOUT Storage temperature range*3 TSTG Conditions Rating Unit VDD1, VDD2 pins VSS − 0.5 to VSS + 7.0 V Input pins VSS − 0.5 to VDD + 0.5 V Output pins VSS − 0.5 to VDD + 0.5 V −65 to +150 °C *1. This parameter rating is the values that must never exceed even for a moment. This product may suffer breakdown if this parameter rating is exceeded. Operation and characteristics are guaranteed only when the product is operated at recommended operating conditions. *2. VDD is a VDD value of recommended operating conditions. *3. When stored in nitrogen or vacuum atmosphere applied to IC itself only (excluding packaging materials). RECOMMENDED OPERATING CONDITIONS Rating Parameter Symbol Conditions Unit Min Typ Max Supply voltage VDD 3.0 – 3.6 V Operating temperature TOPR −40 – +85 °C – 50 – Ω 70 – 200 MHz Output load Output frequency RL fOUT Terminated to VDD − 2V Note. Since it may influence the reliability if it is used out of range of recommended operating conditions, this product should be used within this range. SEIKO NPC CORPORATION —4 5072 series ELECTRICAL CHARACTERISTICS DC Characteristics Recommended operating conditions apply unless otherwise noted. Rating Parameter Symbol Conditions Unit Min Typ Max Current consumption 1 IDD1 Measurement circuit 1, output terminated to VDD − 2V, OE = OPEN – 50 88 mA Current consumption 2 IDD2 Measurement circuit 1, output terminated to VDD − 2V 5072BA: OE = LOW, 5072CA: OE = HIGH – 10 20 mA Ta = 0 to +85°C 2.275 2.350 2.420 V HIGH-level output voltage VOH Ta = −40 to 0°C 2.215 2.295 2.420 V Ta = 0 to +85°C 1.490 1.600 1.680 V Ta = −40 to 0°C 1.470 1.605 1.745 V VOL Measurement circuit 2, VDD = 3.3V, OUT/OUTN pins, OE = OPEN HIGH-level input voltage VIH Measurement circuit 3, OE pin 0.7VDD – – V LOW-level input voltage VIL Measurement circuit 3, OE pin – – 0.3VDD V HIGH-level input current IIH Measurement circuit 4, OE pin IIL Measurement circuit 4, OE pin Input impedance ZIN VC resistance Pull-down resistance LOW-level output voltage LOW-level input current 5072BA VIH = 0.7VDD 20 – 200 µA 5072CA VIH = VDD – – 20 µA 5072BA VIL = 0V – – 20 µA 5072CA VIL = 0.3VDD 20 – 200 µA Measurement circuit 5, measured between supply and VC 10 – – MΩ RVC Measurement circuit 6, measured between VC and XR 100 150 200 kΩ RS Measurement circuit 7, measured between VSS and XC 10 20 40 kΩ SEIKO NPC CORPORATION —5 5072 series AC Characteristics Recommended operating conditions apply unless otherwise noted. Rating Parameter Symbol Conditions Unit Min Typ Max Output duty cycle 1 Duty1 Measurement circuit 1, measured at output crossing point, Ta = 25°C, VDD = 3.3V 45 50 55 % Output duty cycle 2 Duty2 Measurement circuit 1, measured at 50% output swing, Ta = 25°C, VDD = 3.3V 45 50 55 % Output swing VOPP Measurement circuit 1, peak-to-peak of output waveform 0.4 – – V 1 ns Output rise time tr Measurement circuit 1, output swing 20% to 80% – 0.5 tf Measurement circuit 1, output swing 80% to 20% – 0.5 1 ns Output enable delay time tOE Measurement circuit 3, Ta = 25°C – – 200 ns Output disable delay time tOD Measurement circuit 3, Ta = 25°C – – 200 ns Output fall time VDD tf tr OUTN 80% VOPP OUT 20% VDD – 2V tW tPER DUTY1 = (tW/tPER) VSS 100 Figure 1. Output waveform tOD tOE OE VDD VDD/2 GND VDD LOW-level (High impedance) OUT OUTN GND Figure 2. OE timing waveform (5072BA) tOD tOE OE VDD VDD/2 GND VDD OUT OUTN LOW-level (High impedance) GND Figure 3. OE timing waveform (5072CA) SEIKO NPC CORPORATION —6 5072 series MEASUREMENT CIRCUITS Measurement Circuit 1 Measurement Circuit 2 Parameters: IDD1, IDD2, Duty1, Duty2, VOPP , tr , tf Parameters: VOH, VOL A VDD1 RP IDD1, IDD2 VDD1 1kΩ VDD2 VDD2 50Ω XIN XIN OUTN 50Ω LS OUTN XC TEST OUT XR When measurement IDD1(5072BA)/ IDD2(5072CA) OUT 50Ω VSS2 50Ω OE When measurement IDD2(5072BA)/ IDD1(5072CA) VSS1 VDD−2V V V VDD−2V VC VSS1 VSS2 VOH,VOL When XIN = HIGH: OUT is tied LOW (VOL) OUTN is tied HIGH (VOH) When XOUT = LOW: OUT is tied HIGH (VOH) OUTN is tied LOW (VOL) Measurement Circuit 3 Measurement Circuit 4 Parameters: VIH, VIL, tOE, tOD Parameter: IIH, IIL 5072BA VDD1 VDD1 RP VDD2 When measurement IIH XIN 50Ω LS XC XR IIH, IIL A OUTN 0.7VDD VDD2 OE When measurement IIL VSS1 OUT VSS2 50Ω OE V VSS1 VSS2 VDD−2V VIH,VIL 5072CA VIH: output state changes VSS → VDD VIL: output state changes VDD → VSS OE: disable function VDD1 When measurement IIH VDD2 IIH, IIL A OE When measurement IIL 0.3VDD VSS1 VSS2 SEIKO NPC CORPORATION —7 5072 series Measurement Circuit 5 Measurement Circuit 6 Parameter: ZIN Parameter: RVC VDD1 VDD2 A I1 A VDD1 I2 VDD2 VC VC XR V2 V ZIN = VDD/I1 VSS1 VSS1 VSS2 VSS2 RVC = V2/I2 Measurement Circuit 7 Parameter: RS VDD1 VDD2 I3 A XC V3 V VSS1 VSS2 RS = V3/I3 SEIKO NPC CORPORATION —8 5072 series FUNCTIONAL DESCRIPTION Oscillator Equivalent Circuit The oscillator can be represented by the equivalent circuit shown below. The crystal unit is connected to XIN, and the other terminal is connected to the LS and RP network. A varicap is added with cathode connected to XR, and anode connected to XC. The control voltage is applied to the VC pin, with high-resistance element connected between VC and XR built-in. RP X'tal XIN To differential converter 100pF XC LS CVC XR C2 RVC RS C1 VC VC input VSS1 Note. RP is a damping resistor to prevent parasitic oscillation due the combined effects of the external inductor (expander coil) and varicap capacitance/internal capacitance. It is recommended that RP be connected in parallel with LS. Oscillator internal capacitors (design value) Internal capacitance [pF] (design value) Version C1 C2 11.2 14.4 5072BA 5072CA Selecting external constants The LS and RP values should be selected such that both (a) the resonance point in the loop formed by LS and C0, CL, CVC is higher than the crystal oscillator frequency, and (b) the resonance point does not satisfy the oscillation condition. (C0 is the crystal shunt capacitance, CL is the oscillator equivalent circuit capacitance, and CVC is the varicap capacitance.) In the oscillator circuit, if the crystal capacitance C0 is 2.85pF, the varicap (CVC) is a HVC350B (Renesas), and the oscillator frequency is 155.52MHz, then values in the order LS = 220nH, RP = 2.2kΩ or LS = 180nH, RP = 1.8kΩ will satisfy the conditions above. The optimal values for LS and RP will vary with crystal characteristics, oscillator frequency, and varicap diode, thus the values selected should be thoroughly evaluated. SEIKO NPC CORPORATION —9 5072 series Output Circuit The output is enabled/disabled using the OE pin. Outputs are high impedance when disabled. The OE pin logic is shown in the following table. Version OE OUT OUTN HIGH or open CLK output CLK output LOW High impedance High impedance HIGH High impedance High impedance LOW or open CLK output CLK output 5072BA 5072CA 5072BA LV-PECL output circuit VDD1 OE = HIGH: ON OE = LOW: OFF From pre-buffer OUTN OE = HIGH: OFF OE = LOW: ON OUT 5072CA LV-PECL output circuit OE = HIGH: OFF OE = LOW: ON VDD1 From pre-buffer OUTN OE = HIGH: ON OE = LOW: OFF OUT SEIKO NPC CORPORATION —10 5072 series Please pay your attention to the following points at time of using the products shown in this document. 1. The products shown in this document (hereinafter “Products”) are designed and manufactured to the generally accepted standards of reliability as expected for use in general electronic and electrical equipment, such as personal equipment, machine tools and measurement equipment. The Products are not designed and manufactured to be used in any other special equipment requiring extremely high level of reliability and safety, such as aerospace equipment, nuclear power control equipment, medical equipment, transportation equipment, disaster prevention equipment, security equipment. The Products are not designed and manufactured to be used for the apparatus that exerts harmful influence on the human lives due to the defects, failure or malfunction of the Products. If you wish to use the Products in that apparatus, please contact our sales section in advance. In the event that the Products are used in such apparatus without our prior approval, we assume no responsibility whatsoever for any damages resulting from the use of that apparatus. 2. NPC reserves the right to change the specifications of the Products in order to improve the characteristics or reliability thereof. 3. The information described in this document is presented only as a guide for using the Products. No responsibility is assumed by us for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of the third parties. Then, we assume no responsibility whatsoever for any damages resulting from that infringements. 4. The constant of each circuit shown in this document is described as an example, and it is not guaranteed about its value of the massproduction products. 5. In the case of that the Products in this document falls under the foreign exchange and foreign trade control law or other applicable laws and regulations, approval of the export to be based on those laws and regulations are necessary. Customers are requested appropriately take steps to obtain required permissions or approvals form appropriate government agencies. SEIKO NPC CORPORATION 1-9-9, Hatchobori, Chuo-ku, Tokyo 104-0032, Japan Telephone: +81-3-5541-6501 Facsimile: +81-3-5541-6510 http://www.npc.co.jp/ Email: [email protected] NC0212DE 2011.01 SEIKO NPC CORPORATION —11