CF5050A

SM5050A NIPPON PRECISION CIRCUITS INC. Single-output Clock Generator IC OVERVIEW The SM5050A is a single-output clock generator IC that generates standard high-frequency clocks derived from a 20 to 40MHz crystal oscillator master clock. The high-frequency output stage uses optimized PLL circuits for low jitter output. The oscillator capacitors CG and CD are built-in, realizing a high-frequency output oscillator by just the connection of a crystal. Two program inputs allows selection from 4 frequency multipliers, making the SM5050A able to generate multi-standard frequency clock outputs. FEATURES s s PAD DIMENSIONS ( Unit: µm) s s s s s s s 2.7 to 3.6V operating supply voltage 20 to 40MHz master clock frequency (fundamental) Output frequency ranges • 100 to 166.6MHz (VDD = VDDQ = 3.0 to 3.6V) • 100 to 125MHz (VDD = VDDQ = 2.7 to 3.6V) 8mA output drive capability Oscillator capacitors (CG, CD) and feedback resistor (Rf) built-in 100ps (typ) low jitter output (peak-to-peak) 2 program inputs for 4 selectable multiplier ratios Standby function Packaging • Chip form (CF5050A) • 8-pin VSOP package (SM5050AV) P1 P0 (2160,1570) VSS VSSQ Q SA5050A INHN XT (0,0) VDDQ VDD XTN PINOUT ( Top view ) Chip size: 2.16 × 1 .57mm Chip thickness: 300 ± 30µm Chip base: V S S l evel PACKAGE DIMENSIONS (Unit: m m ) P1 VSS Q VDD 1 2 3 4 8 7 6 5 P0 INHN XT XTN 4.4 ± 0.2 6.4 ± 0.3 0 to 10 0.575 typ ORDERING INFORMATION D e vice CF5050A–1 SM5050AV P ackag e Chip form 3.1 ± 0.3 1.15 ± 0.05 0.15 −0.05 +0.1 0.10 0.22 ± 0.1 0.1 ± 0.05 8-pin V S O P 0.65 0.12 M NIPPON PRECISION CIRCUITS—1 0.5 ± 0.2 S M5050A BLOCK DIAGRAM VDD VDDQ XT XTN Oscillator R-counter Phase Detector Charge Pump LPF VCO Duty Control Circuit Output Buffer Q N-counter P0 Control Circuit P1 INHN VSS VSSQ PIN DESCRIPTION SM5050AV Number 1 2 3 4 5 6 7 8 Name P1 VSS VSSQ Q VDD VDD XTN XT INHN P0 XTN XT INHN P0 906 1524 1870 1870 1540 240 240 542 1015 1330 – O I Ip Ip Supply Cr ystal oscillator connection pins. Cr ystal connected between XT and XTN. Operating state control (inhibit). When INHN is LOW , output is high impedance and PLL circuits stop. Program input 0. Selects the output frequency multiplier ratio. Q VDDQ 290 290 540 920 569 240 – O – Output circuit ground Output (CMOS) Output circuit supply Name X P1 VSS 620 290 Y 1330 1132 Ip – Program input 1. Selects the output frequency multiplier ratio. Ground CF5050A P ad dimensions [µm] I/O 1 D escription 1 . Ip = input with built-in pull-up resistor. NIPPON PRECISION CIRCUITS—2 S M5050A OUTPUT FREQUENCY SETTINGS P rogram inputs Multiplier ratio P0 LOW LOW HIGH P1 LOW HIGH LOW ×4 × 4 .25 ×5 Master clock frequency [MHz] 25.00 25.00 25.00 26.66 24.8832 26.66 Output frequency [MHz] 100 106.25 125 133.3 155.52 166.6 3.0 to 3.6 2.7 to 3.6 Supply voltag e [V] HIGH HIGH × 6 .25 N ote: The output frequency range is 100 to 166.6MHz. The master clock frequency can be adjusted to any value within the range 20 to 40MHz, so the master clock frequency and multiplier should be selected such that the output frequency is within the output frequency range. SPECIFICATIONS Absolute Maximum Ratings VSS = 0V P arameter S upply voltage range Input voltage range Output voltage range Storage temperature range Operating temperature range Output current Pow er dissipation Symbol VDD V IN VOUT CF5050A T s tg T o pr IO U T PD SM5050AV SM5050AV Condition Rating −0 .5 to 6.0 −0 .5 to V D D + 0 .5 −0 .5 to V D D + 0 .5 −6 5 to 150 −5 5 to 125 −4 0 to 85 25 150 Unit V V V °C °C °C mA mW Recommended Operating Conditions VSS = 0V, fOUT = 100 to 166.6MHz, CL = 15pF Rating P arameter Symbol Condition min O perating supply voltage Input voltage Operating temperature VDD V IN T o pr fO U T ≤ 1 2 5 M H z fO U T ≤ 1 66.6MHz 2.7 3.0 VSS −2 0 typ – – – – max 3.6 V 3.6 VDD 80 V °C Unit NIPPON PRECISION CIRCUITS—3 S M5050A DC Characteristics VDD = 2.7 to 3.6V, VSS = 0V, Ta = −20 to 80°C unless otherwise noted Rating P arameter Q H IGH-level output voltage Q L OW -level output voltage Q output leakage current INHN HIGH-level input voltage P0, P1 HIGH-level input voltage I N H N L OW -level input voltage P0, P1 LOW -level input voltage Symbol VOH VOL IZ V I H1 V I H2 V I L1 V I L2 2 5MHz cr ystal, measurement circuit 1, load circuit 1, INHN = open, C L = 1 5pF, P0 = HIGH, P1 = LOW , V D D = 3 .0V 25MHz cr ystal, measurement circuit 1, load circuit 1, INHN = open, C L = 1 5pF, P0 = HIGH, P1 = LOW I NHN = V S S , m easurement circuit 1 V D D = 3 V, measurement circuit 2 V D D = 3 V, Ta = 25 °C , f = 30MHz M easurement circuit 3 D esign values 1 5.98 18.44 20.90 pF Condition min V D D = 2 .7V, IO H = 8 mA V D D = 2 .7V, IO L = 8 mA M easurement circuit 4, INHN = V S S VOH = VDD VOL = VSS 2.2 – – – 0 .7V D D 0 .9V D D – – – typ – – – – – – – – 23 max – 0.4 10 µA 10 – – 0.3V D D 0.1V D D – mA – – 0.3 10 – 100 15.98 – – – – −2 40 300 18.44 42 40 6 200 – 900 20.90 µA MΩ kΩ Ω kΩ pF V V V V V V Unit Current consumption ID D Standby current INHN, P0, P1 input pull-up resistance N egative resistance F eedback resistance I nternal capacitance IS T RUP1 RUP2 −R L Rf CG CD NIPPON PRECISION CIRCUITS—4 S M5050A Switching Characteristics VDD = 2.7 to 3.6V, VSS = 0V, Ta = −20 to 80°C unless otherwise noted Rating P arameter Symbol Condition min O utput rise time Output fall time tr tf 0 .2V D D → 0 .8V D D , m easurement circuit 1, load circuit 1, C L = 1 5pF 0 .8V D D → 0 .2V D D , m easurement circuit 1, load circuit 1, C L = 1 5pF V D D = 3 V, Ta = 25 °C , measurement circuit 1, load circuit 1, C L = 1 5pF, f ≤ 166.6MHz V D D = 3 V, Ta = 25 °C , measurement circuit 1, load circuit 1, C L = 1 5pF V D D = 3 V, Ta = 25 °C , measurement circuit 1, load circuit 1, C L = 1 5pF Measurement circuit 1 M easurement circuit 1 V D D = 2 .7V V D D = 3 .0V V D D = 3 V, Ta = 25 °C , 25MHz crystal, P0 = HIGH, P1 = LOW , measurement circuit 1, load circuit 1,C L = 1 5pF, peak-to-peak – – typ 1 1 max 2.5 2.5 ns ns Unit Output duty cycle Duty 40 – 60 % Output disable delay time 1 Star tup time 2 ,3 Oscillator frequency Output frequency tP L Z tS Z L f fO U T – – 20 100 100 – 1 – – – 100 – 40 125 ns ms MHz MHz 166.6 Output clock jitter3 Jitter – 100 – ps 1 . Time from when INHN goes LOW until Q output goes high impedance. 2 . Time from when either INHN goes LOW to HIGH or supply voltage V D D = 3 .0V until normal signal output. 3 . Measured values using NPC characteristics standard evaluation board and standard crystal. NPC STANDARD CRYSTAL DATA Cb f (MHz) 25 27 R ( Ω) 4.368 7.421 L (mH) 1.885 2.402 Ca (fF) 21.52 14.48 Cb (pF) 4.793 4.097 L Ca R NIPPON PRECISION CIRCUITS—5 S M5050A MEASUREMENT CIRCUITS Measurement Circuit 1 Measurement Circuit 4 A VDDQ IDD IST IZ VDDQ VDD Q Q INHN VSSQ VSS IZ XT X'tal XTN INHN VDD A V VOH VOL VSSQ VSS Measurement Circuit 2 Load Circuit 1 3.0V VDDQ VDD RUP1 = VDD IPR (VIL = 0V) Q output CL : 15pF (Including probe capacitance) P0, P1, INHN VSSQ VSS V VIH VIL IPR RUP2 = VDD VIH IPR VDD = 3.0V VIH = 2.1V A Measurement Circuit 3 XT VDDQ VDD Rf = VDD IRf XTN VSSQ VSS A IRf NIPPON PRECISION CIRCUITS—6 S M5050A Switching Time Measurement Waveforms Output duty level Q output 0.8V DD 0.2V DD TW 0.8V DD 0.2V DD DUTY measurement voltage (0.5V DD ) tr Output duty cycle time tf Q output TW T DUTY measurement voltage (0.5V DD) DUTY= TW/ T 100 (%) Output Disable Delay Time/Startup Time INHN VIL VIH tPLZ Q output tSZL ,,,,,,,,, ,,,,,,,,, Hi-Z ,,,,,,,,, ,,,,,,,,, INHN input waveform tr = tf ,,,,,,,, ,,,,,,,, ,,,,,,,, ,,,,,,,, 10ns NIPPON PRECISION CIRCUITS—7 S M5050A NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility fo r the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with expor t controls on the distribution or dissemination of the products. Customers shall not expor t, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9921AE 2000.07 NIPPON PRECISION CIRCUITS INC. NIPPON PRECISION CIRCUITS—8