5042 series High-stability Crystal Oscillator IC with Frequency Adjustment Function OVERVIEW The 5042 series are high-stability clock oscillator ICs with built-in frequency adjustment functions. The frequency adjustment functions can be optimized, by the addition of a minimal adjustment process, to improve the frequency stability. The function is implemented using frequency adjustment data written to a built-in EEPROM over a 1-wire serial interface. The ICs are ideal for compact crystal oscillators for use in applications such as WiMAX (Worldwide Interoperability for Microwave Access) and PLC (Power Line Communication) that require high frequency stability in the order of ±30 to ±10ppm. They use a pad layout suitable for wire bonding mounting. FEATURES ■ ■ ■ ■ ■ Realizing frequency stability improvement with minimal additional process Temperature compensation range/ operating temperature range: −40°C to +85°C Frequency adjustment functions built-in • Frequency-temperature characteristics compensation function AT-cut crystal, 3rd order harmonic frequencytemperature characteristics compensation, with independent low-temperature and high-temperature range compensation settings - Center frequency adjustment function - Temperature rotation compensation function - Low-temperature characteristics compensation - High-temperature characteristics compensation Rewritable EEPROM built-in 6 pads: same as general clock oscillator ICs ■ ■ ■ ■ ■ ■ ■ ■ Operating supply voltage range • 5042A×A: 2.25V to 3.63V • 5042B×A: 1.60V to 2.25V Recommended oscillation frequency range: 20MHz to 55MHz (for fundamental oscillation) Frequency divider built-in: • Selectable by version: fO, fO/2, fO/4, fO/8, fO/16, fO/32 • Frequency divider output for 0.625MHz (min) low frequency output Standby function High-impedance in standby mode, oscillator stops CMOS output 15pF output load Pad layout for wire bonding Chip form (CF5042××A) FREQUENCY CHARACTERISTICS COMPENSATION BEFORE and AFTER ADJUSTMENT 50 40 30 Before compensation ∆f/f [ppm] 20 10 ± 10ppm 0 −10 −20 After compensation −30 −40 −50 −40 −20 0 20 40 Ta [°C] 60 80 100 APPLICATIONS ■ ■ 3.2mm × 2.5mm, 2.5mm × 2.0mm size miniature crystal oscillator modules WiMAX, WiBro, PLC and applications requiring high-stability clock oscillators ORDERING INFORMATION Device Package CF5042××A−4 Chip form SEIKO NPC CORPORATION—1 5042 series SERIES CONFIGURATION Pad layout for wire bonding Recommended Operating supply oscillation voltage range frequency range*1 [V] [MHz] Output frequency and version name*2 fO fO/2 fO/4 fO/8 fO/16 fO/32 2.25 to 3.63 5042A1A 5042A2A 5042A3A 5042A4A 5042A5A 5042A6A 1.60 to 2.25 (5042B1A) (5042B2A) (5042B3A) (5042B4A) (5042B5A) (5042B6A) 20 to 55 *1. The recommended oscillation frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscillation frequency range 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. Versions in parentheses ( ) are under development. VERSION NAME Device Package Version name CF5042 CF5042××A−4 Chip form A−4 Form CF: Chip (Die) form Frequency divider function (output frequency) Operating supply voltage SEIKO NPC CORPORATION—2 5042 series PAD LAYOUT (Unit: µm) (420,345) Y Q 5 VDD 6 (0,0) 1 (−420,−345) 4 VSS 3 INHN 2 XTN XT X Chip size: 0.84mm × 0.69mm Chip thickness: 130µm ± 15µm Pad size: 80µm × 80µm Chip base: VSS level PAD DIMENSIONS PIN DESCRIPTION Pad dimensions [µm] Pad No. Pin I/O Name Description X Y –225.2 –253.5 225.2 –253.5 1 XTN O Amplifier output 2 XT I Amplifier input 3 INHN I Output state control input High impedance when LOW (oscillator stops). Power-saving pull-up resistor built-in. 328.5 –5.0 4 VSS – (–) ground – 328.5 223.8 5 Q O Output Output frequency determined by internal circuit to one of fO, fO/2, fO/4, fO/8, fO/16, fO/32. High impedance in standby mode –328.5 223.8 6 VDD – (+) supply voltage – –328.5 –5.0 XT XTN Crystal connection pins. Crystal is connected between XT and XTN. BLOCK DIAGRAM RV RV RF Regulator *2 VDD 1 N *1 Q Oscillation Detection INHN Temperature Compensation VSS Control Register FO, TO, RTG, TLO, TLG, THO, THG *1. N = 1, 2, 4, 8, 16, 32 (mask option) *2. 5042A×A version only SEIKO NPC CORPORATION—3 5042 series ABSOLUTE MAXIMUM RATINGS VSS = 0V unless otherwise noted. Parameter Symbol Conditions Rating Unit Supply voltage range VDD Between VDD and VSS −0.3 to +4.0 V Program read/write supply voltage range VPP Between INHN and VSS −0.3 to +16.5 V Input voltage range*1 VIN Input pins −0.3 to VDD + 0.3 V −0.3 to VDD + 0.3 V ± 20 mA −65 to +150 °C 100 times Output voltage range*1 VOUT Output pins Output current IOUT Q pin Storage temperature range TSTG Chip form EEPROM maximum writes NEW *1. VDD is a VDD value of recommended operating conditions. Note. Absolute maximum ratings are the values that must never exceed even for a moment. This product may suffer breakdown if any one of these parameter ratings is exceeded. Operation and characteristics are guaranteed only when the product is operated at recommended supply voltage range. RECOMMENDED OPERATING CONDITIONS VSS = 0V unless otherwise noted. Rating*1 Parameter Supply voltage Input voltage Symbol Max 5042A×A 2.25 – 3.63 V 5042B×A 1.60 – 2.25 V VSS – VDD V −40 – +85 °C 5042A×A 20 – 55 MHz 5042B×A (20) – (55) MHz 5042A×A 0.625 – 55 MHz 5042B×A (0.625) – (55) MHz – – 15 pF VIN Input pins (XT, INHN) Oscillation frequency*2 fo Output load capacitance Typ Between VDD and VSS TOPR Unit Min VDD Operating temperature Output frequency*2 Conditions fOUT Q pin CLOUT Q pin *1. Values in parentheses ( ) are provisional only. *2. The recommended oscillation frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscillation frequency range 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. SEIKO NPC CORPORATION—4 5042 series ELECTRICAL CHARACTERISTICS DC Characteristics (5042A1A to A6A) VDD = 2.25V to 3.63V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted. Rating Parameter Symbol Conditions 5042A1A (fOUT = fo), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A2A (fOUT = fo/2), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz Operating-mode current consumption*1 IDD 5042A3A (fOUT = fo/4), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A4A (fOUT = fo/8), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A5A (fOUT = fo/16), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A6A (fOUT = fo/32), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz Unit MIN TYP MAX VDD = 2.5V – 1.4 2.8 mA VDD = 3.3V – 1.7 3.4 mA VDD = 2.5V – 1.1 2.2 mA VDD = 3.3V – 1.4 2.7 mA VDD = 2.5V – 1.0 1.9 mA VDD = 3.3V – 1.2 2.4 mA VDD = 2.5V – 0.9 1.7 mA VDD = 3.3V – 1.0 2.1 mA VDD = 2.5V – 0.8 1.7 mA VDD = 3.3V – 1.0 2.0 mA VDD = 2.5V – 0.8 1.6 mA VDD = 3.3V – 1.0 2.0 mA – – 10 µA VDD−0.4 – – V – – 0.4 V Q = VDD – – 10 µA Q = VSS −10 – – µA 0.7VDD – – V – – 0.3VDD V INHN = VSS 0.4 1.5 10 MΩ INHN = 0.7VDD 50 100 200 kΩ Standby-mode current consumption IST Measurement circuit 1, INHN = LOW HIGH-level output voltage VOH Q pin, Measurement circuit 3, IOH = −4mA LOW-level output voltage VOL Q pin, Measurement circuit 3, IOL = 4mA Output leakage current HIGH-level input current LOW-level input current INHN pull-up resistance IZ VIH Measurement circuit 4, INHN = LOW INHN pin, Measurement circuit 5 VIL RPU1 RPU2 Measurement circuit 6 *1. The consumption current IDD (CLOUT) with a load capacitance (CLOUT) connected to the Q pin is given by the following equation, where IDD is the noload consumption current and fOUT is the output frequency. IDD (CLOUT) [mA] = IDD [mA] + CLOUT [pF] × VDD [V] × fOUT [MHz] × 10–3 SEIKO NPC CORPORATION—5 5042 series DC Characteristics (5042B1A to B6A) VDD = 1.60V to 2.25V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted. Rating Parameter Operating-mode current consumption*1 Symbol IDD Conditions Unit MIN TYP MAX 5042B1A (fOUT = fo), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V – 1.7 3.4 mA 5042B2A (fOUT = fo/2), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V – 1.5 3.3 mA 5042B3A (fOUT = fo/4), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V – 1.4 3.2 mA 5042B4A (fOUT = fo/8), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V – 1.4 3.1 mA 5042B5A (fOUT = fo/16), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V – 1.3 3.1 mA 5042B6A (fOUT = fo/32), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V – 1.3 3.0 mA – – 10 µA VDD−0.4 – – V – – 0.4 V Q = VDD – – 10 µA Q = VSS −10 – – µA 0.7VDD – – V – – 0.3VDD V INHN = VSS 0.4 1.5 10 MΩ INHN = 0.7VDD 50 100 200 kΩ Standby-mode current consumption IST Measurement circuit 1, INHN = LOW HIGH-level output voltage VOH Q pin, Measurement circuit 3, IOH = −4mA LOW-level output voltage VOL Q pin, Measurement circuit 3, IOL = 4mA Output leakage current HIGH-level input current LOW-level input current INHN pull-up resistance IZ VIH Measurement circuit 4, INHN = LOW INHN pin, Measurement circuit 5 VIL RPU1 RPU2 Measurement circuit 6 *1. The consumption current IDD (CLOUT) with a load capacitance (CLOUT) connected to the Q pin is given by the following equation, where IDD is the noload consumption current and fOUT is the output frequency. IDD (CLOUT) [mA] = IDD [mA] + CLOUT [pF] × VDD [V] × fOUT [MHz] × 10–3 SEIKO NPC CORPORATION—6 5042 series AC Characteristics Clock output characteristics (5042A1A to A6A, Q pin) VDD = 2.25V to 3.63V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted. Parameter Symbol Output rise time tr Output fall time tf Output duty cycle*1 Output disable delay time Rating Conditions Unit MIN TYP MAX Measurement circuit 1, 0.1VDD → 0.9VDD – – 4.5 ns Measurement circuit 1, 0.9VDD → 0.1VDD – – 4.5 ns Duty Measurement circuit 1, threshold voltage 0.5VDD, Duty = Tw/T × 100 45 50 55 % tOD Measurement circuit 2, INHN = HIGH → LOW – – 100 ns *1. This parameter is measured using the NPC’s standard crystal. Note that the values will vary with the crystal characteristics used or mounting conditions. Clock output characteristics (5042B1A to B6A, Q pin) VDD = 1.60V to 2.25V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted. Parameter Symbol Output rise time tr Output fall time tf Rating*1 Conditions Unit MIN TYP MAX Measurement circuit 1, 0.1VDD → 0.9VDD – – 5 ns Measurement circuit 1, 0.9VDD → 0.1VDD – – 5 ns (45) (50) (55) % – – 100 ns Output duty cycle*2 Duty Measurement circuit 1, threshold voltage 0.5VDD, Duty = Tw/T × 100 Output disable delay time tOD Measurement circuit 2, INHN = HIGH → LOW *1. Values in parentheses ( ) are provisional only. *2. This parameter is measured using the NPC’s standard crystal. Note that the values will vary with the crystal characteristics used or mounting conditions. 0.9VDD Q 0.9VDD TW 0.1VDD DUTY measurement voltage (0.5VDD) 0.1VDD DUTY= TW/ T T tr 100 (%) tf Figure 1. Output switching waveform INHN 0.5VDD tr = tf = 2ns (10% to 90%) 0.5VDD tOSC*1 tOD 0.1V 0.5VDD Q 0.1V Normal output Hi-Z Low Normal output *1. tOSC is oscillator start-up time. It is interval of time until the oscillation is stabilized and varies with the crystal used. Please contact us for further details. Figure 2. Output disable timing chart SEIKO NPC CORPORATION—7 5042 series MEASUREMENT CIRCUITS Measurement Circuit 1 Measurement Circuit 4 Parameters: IDD, IST, Duty, tr, tf Parameters: IZ IDD IST A VDD IDD: Open DUTY, tr, tf: Short IST: Open or Short VDD XT VDD A Q or VSS Q Crystal IZ INHN VSS XTN INHN VSS CLOUT = 15pF (Including probe capacitance) IDD, DUTY, tr, tf: Open IST: Short Note: The AC characteristics are observed using an oscilloscope on pin Q. Measurement Circuit 5 Parameters: VIH, VIL Measurement Circuit 2 Parameters: tOD VDD RL1 =1kΩ VDD Signal Generator INHN VSS VIH VIL V VT1 VT2 Q 0.001µF XT INHN VSS RL2 =1kΩ 50Ω VDD or Measurement Circuit 6 VSS Parameters: RPU1, RPU2 XT input signal: 1Vp-p, sine wave Measurement Circuit 3 VDD Parameters: VOH, VOL INHN VSS VDD 50Ω Signal Generator Q 0.001µF XT VSS 50Ω ∆V VIN V VOH VS VS adjusted such that ∆V = 50 × IOH. VS VOL VOH V VOL A IPU RPU1 = VDD IPU (VIN = 0V) RPU2 = VDD 0.7V DD (VIN = 0.7V DD) IPU 0.1µF VS ∆V VS adjusted such that ∆V = 50 × IOL. XT input signal: 1Vp-p, sine wave SEIKO NPC CORPORATION—8 5042 series FUNCTIONAL DESCRIPTION Frequency Adjustment Function The 5042 series ICs have a built-in oscillator frequency adjustment function. The frequency adjustment settings are written to and stored in internal EEPROM, making the devices easy to setup. A typical compensation sequence is shown below. 50 40 30 50 40 Before adjustment 30 ∆f/f [ppm] ∆f/f [ppm] 10 0 −10 −20 Before compensation 20 10 20 0 −10 −20 −30 −30 After adjustment −40 −50 −40 −20 0 20 40 60 After compensation −40 −50 −40 −20 0 20 40 80 100 Ta [°C] Figure 3. Center frequency adjustment After compensation ∆f/f [ppm] ∆f/f [ppm] 50 40 30 0 −10 0 −10 −20 −30 −30 Before compensation 0 20 40 60 80 100 Ta [°C] Figure 5. Low-temperature characteristics compensation Before compensation 20 10 −20 −40 −50 −40 −20 80 100 Figure 4. Temperature rotation compensation 50 40 30 20 10 60 Ta [°C] −40 −50 −40 −20 After compensation 0 20 40 60 80 100 Ta [°C] Figure 6. High-temperature characteristics compensation SEIKO NPC CORPORATION—9 5042 series Power-saving Pull-up Resistor The INHN pin pull-up resistance RPU1 or RPU2 changes in response to the input level (open, HIGH, or LOW). When INHN is tied LOW level, the pull-up resistance is large (RPU1), reducing the current consumed by the resistance. When INHN is left open circuit (HIGH), the pull-up resistance is small (RPU2), which increases the input susceptibility to external noise. However, the pull-up resistance ties the INHN pin HIGH level to prevent external noise from unexpectedly stopping the output. Oscillation Detector Function The 5042 series also feature an oscillation detector circuit. This circuit functions to disable the outputs until the oscillator circuit starts and oscillation becomes stable. This alleviates the danger of abnormal oscillator output at oscillator start-up when power is applied or when INHN is switched. SEIKO NPC CORPORATION—10 5042 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 catalog (hereinafter “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 catalog 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 catalog 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 catalog 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 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] NC0905AE 2009.10 SEIKO NPC CORPORATION—11