CF5037 series 2.5V LVDS Output Oscillator ICs OVERVIEW The CF5037 series are 2.5V operation, LVDS output oscillator ICs. They support 80MHz to 250MHz 3rd overtone oscillation and 80MHz to 700MHz fundamental oscillation. The CF5037 series can be used to construct high-frequency LVDS output oscillators. FEATURES ■ ■ ■ ■ 2.375 to 3.6V operating supply voltage range Operating frequency range (varies with version) • 80MHz to 700MHz fundamental oscillation • 80MHz to 250MHz 3rd overtone oscillation – 40 to 85°C operating temperature range LVDS output ■ ■ ■ ■ Standby function • Outputs are high impedance when OE is LOW. (oscillator stops) Power-saving pull-up resistor built-in (pin OE) BiCMOS process Chip form (CF5037××) SERIES CONFIGURATION Version Oscillation mode CF5037A1 CF5037B1 CF5037B2*2 CF5037C1 Fundamental or 3rd overtone CF5037D1 Fundamental (CF5037F1) (CF5037V2) fO 100 to 180 400 to 600 600 to 700 (CF5037F2) (CF5037V1) 80 to 120 250 to 400 (CF5037D2) (CF5037E2) Output frequency 150 to 250 CF5037C2 (CF5037E1) Recommended operating frequency range*1 [MHz] Oscillator constants determined by external components (Rf, CXIN, CXOUT) fO fO/2 fO fO/2 fO fO/2 fO fO/2 fO fO/2 fO 80 to 400 fO/2 *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. *2. Minimum output frequency: 80MHz Note. These versions in parentheses ( ) are under development. Please ask our Sales & Marketing section for further detail. ORDERING INFORMATION Device Package CF5037××–1 Chip form SEIKO NPC CORPORATION —1 CF5037 series PAD LAYOUT (Unit: µm) OUT OUTN VCC2 OE 8 Y TEST 7 6 2 3 (1100,1300) 5 9 DB5037 1 (0,0) VCC 4 XIN XOUT GND X Chip size: 1.10 × 1.30mm Chip thickness: 300 ± 30µm PAD size: 150µm × 100µm (VCC, OUT, OUTN pins) 100µm × 100µm (excluding VCC, OUT, OUTN pins) Chip base: GND potential Note: The TEST pin is not used during normal operation. PIN DESCRIPTION and PAD DIMENSIONS Pad dimensions [µm] Pad No. Name I/O Function X Y 1 VCC – (+) supply pin 160 130 2 XIN I Oscillator input pin 511 130 3 XOUT O Oscillator output pin 740 130 4 GND – (–) ground pin 965 130 5 OE I Output enable pin. Outputs are high impedance when LOW (oscillator stopped). Power-saving pull-up resistor built-in. 896 1170 6 VCC2 – (+) output buffer supply pin 756 1170 7 OUTN O Output pin (complementary) 523 1170 8 OUT O Output pin (true) 244 1170 9 TEST I IC test pin. Leave open circuit for normal operation. 136 678 SEIKO NPC CORPORATION —2 CF5037 series BLOCK DIAGRAM VCC VCC2 XIN OUT Colpitts OSC 1/2 LVDS OUTN XOUT GND OE OSCILLATOR CIRCUIT CONSTANT The CF5037 series oscillator setting varies with device version to optimize characteristics over the recommended operating frequency range. Version CF5037A1 CF5037B× CF5037C× Built-in capacitance*1 *2[pF] Oscillation mode Fundamental or 3rd overtone CF5037D× CF5037E× Fundamental CF5037F× Recommended operating frequency range*2 *3 [MHz] CXIN CXOUT 12 12 80 to 120 8 8 100 to 180 6 6 150 to 250 5 5 250 to 400 (5) (5) (400 to 600) (4) (4) (600 to 700) *1. The oscillator internal capacitance values includes parasitic capacitance. *2. Values in parentheses ( ) are provisional only. *3. 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. Oscillator Equivalent Circuit C0 cancel CXIN Rf XIN RPD1 CXOUT XOUT Oscillator block equivalent circuit The CF5037 series oscillator circuit has a C0 cancel circuit built-in to improve the oscillator margin. If power is applied when there is an open circuit between XIN and XOUT, self oscillation may occur, which is not abnormal. Users should confirm that the oscillator operates normally when a crystal unit is connected. SEIKO NPC CORPORATION —3 CF5037 series SPECIFICATIONS Absolute Maximum Ratings Parameter Symbol Conditions Rating Unit Supply voltage range VCC −0.5 to +5.0 V Input voltage range VIN GND − 0.5 to VCC + 0.5 V Output voltage range VOUT GND − 0.5 to VCC + 0.5 V Storage temperature range TSTG −65 to +150 °C Chip form Recommended Operating Conditions Rating Parameter Symbol Conditions Unit Min Typ Max Operating supply voltage VCC 2.375 – 3.6 V Input voltage VIN GND – VCC V TOPR −40 +25 +85 °C 99 100 101 Ω 80 – 700 MHz Operating temperature Output load Output frequency RL fOUT Between OUT and OUTN SEIKO NPC CORPORATION —4 CF5037 series Electrical Characteristics 3.3V operation VCC = 3.0 to 3.6V, GND = 0V, Ta = −40 to +85°C unless otherwise noted. Rating*1 Parameter Symbol Conditions 5037A1, B×, C×, D× Unit Min Typ Max – 45 66 mA Current consumption 1 IEE1 Measurement cct. 1, OE = open – (53) (73) mA Current consumption 2 IEE2 Measurement cct. 1, OE = LOW – – 30 µA HIGH-level output voltage VOH – 1.43 1.6 V LOW-level output voltage VOL Measurement cct. 1, OE = open, RL = 100Ω, OUT, OUTN pins, f = 100MHz 0.9 1.1 – V Measurement cct. 1, OE = open, RL = 100Ω, OUT–OUTN differential voltage, f = 100MHz 247 330 454 mV – – 50 mV Measurement cct. 1, OE = open, RL = 100Ω, OUT–OUTN mid-level potential, f = 100MHz 1.125 1.25 1.375 V – – 50 mV Differential output voltage VOD Differential output error ∆VOD Offset voltage VOS Offset error ∆VOS 5037E×, F× Output leakage current IZ Measurement cct. 2, OE = LOW, OUT, OUTN pins – – 10 µA HIGH-level input voltage VIH Measurement cct. 1, OE pin 0.7VCC – – V LOW-level input voltage VIL Measurement cct. 1, OE pin – – 0.3VCC V LOW-level input current 1 IIL1 Measurement cct. 1, VIL = 0V, OE pin −2 – −20 µA IIL2 Measurement cct. 1, VIL = 0.7VCC, OE pin −20 – −200 µA Measurement cct. 2, XIN pin 12 24 48 kΩ LOW-level input current 2 Pull-down resistance 1 RPD1 *1. Values in parentheses ( ) are provisional only. 2.5V operation VCC = 2.375 to 2.625V, GND = 0V, Ta = −40 to +85°C unless otherwise noted. Rating*1 Parameter Symbol Conditions Unit Min Typ Max 5037A1, B×, C×, D× – 43 63 mA 5037E×, F× – (51) (70) mA IEE1 Measurement cct. 1, OE = open Current consumption 2 IEE2 Measurement cct. 1, OE = LOW – – 30 µA HIGH-level output voltage VOH 1.43 1.6 V LOW-level output voltage VOL Measurement cct. 1, OE = open, RL = 100Ω, OUT, OUTN pins, f = 100MHz – 0.9 1.1 – V Differential output voltage VOD 247 330 454 mV Differential output error ∆VOD Measurement cct. 1, OE = open, RL = 100Ω, OUT–OUTN differential voltage, f = 100MHz – – 50 mV Offset voltage VOS 1.25 1.375 V Offset error ∆VOS Measurement cct. 1, OE = open, RL = 100Ω, OUT–OUTN mid-level potential, f = 100MHz 1.125 – – 50 mV – – 10 µA Current consumption 1 Output leakage current IZ Measurement cct. 2, OE = LOW, OUT, OUTN pins HIGH-level input voltage VIH Measurement cct. 1, OE pin 0.7VCC – – V LOW-level input voltage VIL Measurement cct. 1, OE pin – – 0.3VCC V LOW-level input current 1 IIL1 Measurement cct. 1, VIL = 0V, OE pin −2 – −20 µA LOW-level input current 2 IIL2 Measurement cct. 1, VIL = 0.7VCC, OE pin −10 – −150 µA Measurement cct. 2, XIN pin 12 24 48 kΩ Pull-down resistance 1 RPD1 *1. Values in parentheses ( ) are provisional only. SEIKO NPC CORPORATION —5 CF5037 series Switching Characteristics 3.3V operation VCC = 3.0 to 3.6V, GND = 0V, Ta = −40 to +85°C unless otherwise noted. Rating*1 Parameter Output duty cycle Output swing*2 Symbol Duty VOpp Conditions Measurement cct. 3, measured at 0V differential output (crossing point), Ta = 25°C, VCC = 3.3V Measurement cct. 3, Ta = TOPR, differential output waveform peakto-peak Unit Min Typ Max f < 350MHz 45 – 55 % f ≥ 350MHz 40 – 60 % 5037A1: f = 120MHz 0.35 – – V 5037B×: f = 180MHz 0.35 – – V 5037C×: f = 250MHz 0.35 – – V 5037D×: f = 400MHz 0.35 – – V 5037E×: f = 600MHz (0.35) – – V 5037F×: f = 700MHz (0.35) – – V Output rise time tr Measurement cct. 3, 20 to 80% differential output swing – 0.3 0.7 ns Output fall time tf Measurement cct. 3, 80 to 20% differential output swing – 0.3 0.7 ns Output enable time*3 tOE Measurement cct. 1, Ta = 25°C – – 2 ms Output disable time tOD Measurement cct. 1, Ta = 25°C – – 200 ns *1. Values in parentheses ( ) are provisional only. *2. The said values are measured by using the NPC standard jig. *3. The built-in oscillator stop function does not operate with normal output immediately when OE goes HIGH. Instead, normal output occurs after the oscillator startup time has elapsed. SEIKO NPC CORPORATION —6 CF5037 series 2.5V operation VCC = 2.375 to 2.625V, GND = 0V, Ta = −40 to +85°C unless otherwise noted. Rating*1 Parameter Symbol Output duty cycle Duty Output swing*2 VOpp Conditions Unit Measurement cct. 3, measured at 0V differential output (crossing point), Ta = 25°C, VCC = 2.5V Measurement cct. 3, Ta = TOPR, differential output waveform peakto-peak Min Typ Max f < 350MHz 45 – 55 % f ≥ 350MHz 40 – 60 % 5037A1: f = 120MHz 0.25 – – V 5037B×: f = 180MHz 0.25 – – V 5037C×: f = 250MHz 0.25 – – V 5037D×: f = 400MHz 0.25 – – V 5037E×: f = 600MHz (0.25) – – V 5037F×: f = 700MHz (0.25) – – V Output rise time tr Measurement cct. 3, 20 to 80% differential output swing – 0.3 0.7 ns Output fall time tf Measurement cct. 3, 80 to 20% differential output swing – 0.3 0.7 ns Output enable time*3 tOE Measurement cct. 1, Ta = 25°C – – 2 ms Output disable time tOD Measurement cct. 1, Ta = 25°C – – 200 ns *1. Values in parentheses ( ) are provisional only. *2. The said values are measured by using the NPC standard jig. *3. The built-in oscillator stop function does not operate with normal output immediately when OE goes HIGH. Instead, normal output occurs after the oscillator startup time has elapsed. tPER tW OUTN VOD' VOD Hi-Z OUT OUT-OUTN 0 80% 80% 0 0 VOpp 20% 20% tr VOS tf ∆VOS tOD OE VIH tOE VIL OE input waveform tr = tf 10ns DUTY = 100tW/tPER (%) @ crossing point ∆VOD = |VOD' − VOD| Timing chart SEIKO NPC CORPORATION —7 CF5037 series FUNCTIONAL DESCRIPTION Standby Function When OE goes LOW, the oscillator stops and the output pins (OUT, OUTN) become high impedance. OE OUT, OUTN Oscillator HIGH (or open) Either fO or fO/2 Normal operation LOW High impedance Stopped Power-saving Pull-up Resistor The OE pin pull-up resistance changes in response to the input level (HIGH or LOW). When OE is tied LOW (standby state), the pull-up resistance becomes large, reducing the current consumed by the resistance. When OE is open circuit, the pull-up resistance becomes small, decreasing the susceptibility to the effects of external noise. SEIKO NPC CORPORATION —8 CF5037 series MEASUREMENT CIRCUITS Measurement Circuit 1 A IEE1, IEE2 VCC2 VCC OUT R1 C1 Signal Generator R1 XOUT R1 OE VOD,∆VOD OUTN GND,TEST VOS,∆VOS VOH,VOL IIL1, IIL2 A VIH,VIL 500mVp-p, sine wave C1: 0.01µF R1: 49.9Ω Note. Connect 0.01µF and approximately 10µF bypass capacitors between supply (VCC, VCC2) and GND. Note that the 0.01µF capacitor should have circuit wiring as short as possible. Measurement Circuit 2 VCC A IPD1 VCC2 OUT XIN IZ A RPD1=VCC/IPD1 IZ OUTN OE A GND Measurement Circuit 3 VCC XIN VCC2 OUT Test point R1 Duty,VOpp,tr,tf XOUT OE R1 OUTN Test point GND R1: 49.9Ω Note 1. Connect 0.01µF and approximately 10µF bypass capacitors between supply (VCC, VCC2) and GND. Note that the 0.01µF capacitor should have circuit wiring as short as possible. Note 2. The recommended differential probe used for measurement should have 5GHz analog bandwidth, ≥ 50kΩ impedance, and < 1pF capacitive load. Note 3. If common-mode noise becomes a problem, a DC decoupling capacitor (approximately 1000pF) and terminating resistor matching the common-mode signal should be connected to the output center tap. SEIKO NPC CORPORATION —9 CF5037 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] NC0309CE 2006.04 SEIKO NPC CORPORATION —10