SM5050A 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. PAD DIMENSIONS FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ 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) (Unit: µm) P1 P0 (2160,1570) VSS INHN VSSQ Q XT SA5050A (0,0) VDDQ VDD XTN Chip size: 2.16 × 1.57mm Chip thickness: 300 ± 30µm Chip base: VSS level PINOUT PACKAGE DIMENSIONS (Top view) (Unit: mm) 8 P0 VSS 2 7 INHN Q 3 6 XT VDD 4 5 XTN 0.5 ± 0.2 1 6.4 ± 0.3 P1 4.4 ± 0.2 0 to 10 ° + 0.1 .05 0.15 − 0 0.575TYP 1.15 ± 0.05 3.1 ± 0.3 ORDERING INFORMATION Package CF5050A–1 Chip form SM5050AV 8-pin VSOP 0.65 0.10 0.1 ± 0.05 Device 0.22 ± 0.1 0.12 M SEIKO NPC CORPORATION —1 SM5050A BLOCK DIAGRAM VDDQ VDD XT Oscillator XTN 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 CF5050A Pad dimensions [µm] Number Name 1 P1 2 VSS 3 Q 4 VDD I/O1 Description Name X Y P1 620 1330 Ip Program input 1. Selects the output frequency multiplier ratio. VSS 290 1132 – Ground VSSQ 290 920 – Output circuit ground Q 290 569 O Output (CMOS) VDDQ 540 240 – Output circuit supply VDD 906 240 – Supply Crystal oscillator connection pins. Crystal connected between XT and XTN. 5 XTN XTN 1524 240 O 6 XT XT 1870 542 I 7 INHN INHN 1870 1015 Ip Operating state control (inhibit). When INHN is LOW, output is high impedance and PLL circuits stop. 8 P0 P0 1540 1330 Ip Program input 0. Selects the output frequency multiplier ratio. 1. Ip = input with built-in pull-up resistor. SEIKO NPC CORPORATION —2 SM5050A OUTPUT FREQUENCY SETTINGS Program inputs Multiplier ratio Master clock frequency [MHz] Output frequency [MHz] LOW ×4 25.00 100 LOW HIGH × 4.25 25.00 106.25 125 LOW ×5 25.00 HIGH 26.66 133.3 24.8832 155.52 26.66 166.6 P0 P1 LOW HIGH × 6.25 HIGH Supply voltage [V] 2.7 to 3.6 3.0 to 3.6 Note: 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 Parameter Symbol Condition Rating Unit Supply voltage range VDD −0.5 to 6.0 V Input voltage range VIN −0.5 to VDD + 0.5 V Output voltage range VOUT −0.5 to VDD + 0.5 V CF5050A Storage temperature range Tstg −65 to 150 °C SM5050AV −55 to 125 °C Operating temperature range Topr −40 to 85 °C Output current IOUT 25 mA Power dissipation PD 150 mW SM5050AV Recommended Operating Conditions VSS = 0V, fOUT = 100 to 166.6MHz, CL = 15pF Rating Parameter Operating supply voltage Symbol VDD Condition Unit min typ max fOUT ≤ 125MHz 2.7 – 3.6 fOUT ≤ 166.6MHz 3.0 – 3.6 V Input voltage VIN VSS – VDD V Operating temperature Topr −20 – 80 °C SEIKO NPC CORPORATION —3 SM5050A DC Characteristics VDD = 2.7 to 3.6V, VSS = 0V, Ta = −20 to 80°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max Q HIGH-level output voltage VOH VDD = 2.7V, IOH = 8mA 2.2 – – V Q LOW-level output voltage VOL VDD = 2.7V, IOL = 8mA – – 0.4 V Measurement circuit 4, INHN = VSS VOH = VDD – – 10 IZ VOL = VSS – – 10 Q output leakage current µA INHN HIGH-level input voltage VIH1 0.7VDD – – V P0, P1 HIGH-level input voltage VIH2 0.9VDD – – V INHN LOW-level input voltage VIL1 – – 0.3VDD V P0, P1 LOW-level input voltage VIL2 – – 0.1VDD V 25MHz crystal, measurement circuit 1, load circuit 1, INHN = open, CL = 15pF, P0 = HIGH, P1 = LOW, VDD = 3.0V – 23 – 25MHz crystal, measurement circuit 1, load circuit 1, INHN = open, CL = 15pF, P0 = HIGH, P1 = LOW – – 42 INHN = VSS, measurement circuit 1 – – 40 µA 0.3 – 6 MΩ 10 – 200 kΩ – −240 – Ω 100 300 900 kΩ 15.98 18.44 20.90 pF 15.98 18.44 20.90 pF Current consumption Standby current IDD IST INHN, P0, P1 input pull-up resistance RUP1 Negative resistance −RL Feedback resistance Rf Internal capacitance RUP2 CG CD VDD = 3V, measurement circuit 2 VDD = 3V, Ta = 25°C, f = 30MHz Measurement circuit 3 mA Design values SEIKO NPC CORPORATION —4 SM5050A Switching Characteristics VDD = 2.7 to 3.6V, VSS = 0V, Ta = −20 to 80°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max Output rise time tr 0.2VDD → 0.8VDD, measurement circuit 1, load circuit 1, CL = 15pF – 1 2.5 ns Output fall time tf 0.8VDD → 0.2VDD, measurement circuit 1, load circuit 1, CL = 15pF – 1 2.5 ns Output duty cycle Duty VDD = 3V, Ta = 25°C, measurement circuit 1, load circuit 1, CL = 15pF, f ≤ 166.6MHz 40 – 60 % Output disable delay time1 tPLZ VDD = 3V, Ta = 25°C, measurement circuit 1, load circuit 1, CL = 15pF – – 100 ns Startup time2,3 tSZL VDD = 3V, Ta = 25°C, measurement circuit 1, load circuit 1, CL = 15pF – 1 – ms f Measurement circuit 1 20 – 40 MHz – 125 Measurement circuit 1 VDD = 2.7V 100 fOUT VDD = 3.0V 100 – 166.6 Jitter VDD = 3V, Ta = 25°C, 25MHz crystal, P0 = HIGH, P1 = LOW, measurement circuit 1, load circuit 1,CL = 15pF, peak-to-peak – 100 – Oscillator frequency Output frequency Output clock jitter3 MHz 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 VDD = 3.0V until normal signal output. 3. Measured values using NPC characteristics standard evaluation board and standard crystal. NPC STANDARD CRYSTAL DATA Cb L Ca f (MHz) R (Ω) L (mH) Ca (fF) Cb (pF) 25 4.368 1.885 21.52 4.793 27 7.421 2.402 14.48 4.097 R SEIKO NPC CORPORATION —5 SM5050A MEASUREMENT CIRCUITS Measurement Circuit 1 Measurement Circuit 4 IDD IST A IZ VDDQ VDDQ XT VDD IZ VDD A Q X'tal Q XTN INHN INHN VSSQ VSSQ VSS V VSS Measurement Circuit 2 VOH VOL Load Circuit 1 3.0V VDDQ P0, P1, INHN VSSQ VDD VSS V RUP1 = VDD IPR (VIL = 0V) Q output RUP2 = VDD VIH IPR VDD = 3.0V VIH = 2.1V CL : 15pF (Including probe capacitance) VIH VIL IPR A Measurement Circuit 3 XT VDDQ VDD Rf = VDD IRf XTN VSSQ VSS A IRf SEIKO NPC CORPORATION —6 SM5050A Switching Time Measurement Waveforms Output duty level 0.8V DD Q output 0.8V DD 0.2V DD 0.2V DD DUTY measurement voltage (0.5V DD ) TW tr tf Output duty cycle time DUTY measurement voltage (0.5V DD) Q output TW DUTY= TW/ T T 100 (%) Output Disable Delay Time/Startup Time VIH INHN VIL tPLZ Q output ;;;;;;;;; ;;;;;;;;; Hi-Z ;;;;;;;;; ;;;;;;;;; INHN input waveform tr = tf tSZL ;;;;;;;; ;;;;;;;; ;;;;;;;; ;;;;;;;; 10ns SEIKO NPC CORPORATION —7 SM5050A 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 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] NC9921BE 2006.04 SEIKO NPC CORPORATION —8