SM8707E/F Clock Generator with Dual PLLs OVERVIEW The 8707E/F are dual-PLL clock generator ICs, using a 27MHz master clock, that generate independent audio clock, video clock, and signal processor clock outputs needed in DVD player/recorder applications. Each PLL loop filter and crystal oscillator circuit are built-in and require no external components, resulting in high-precision clocks. The lineup includes devices that support both 44.1/48kHz audio sampling frequencies (fs), switchable using a control pin. The sampling frequency can be switched during operation without generating any output spike noise. FEATURES ■ Supply voltage: 3.0 to 3.6V ■ PLL loop filter built-in ■ Low current consumption: 35mA typ. ■ Crystal oscillator circuit built-in (VDD=3.3V, all outputs with no load) ■ 27MHz master clock ■ Sampling frequency fs: 44.1/48kHz ■ 16-pin VSOP package (Pb free) (internal PLL reference clock) ■ Generated clocks SM8707E SM8707F Video system output 27.0000MHz 27.0000MHz Audio system output 512fs 768fs Signal processor system output 33.8688MHz 16.9344MHz 33.8688MHz ■ Low jitter output (1-sigma output load capacitance typical values) Video system output SM8707E SM8707F 20ps 20ps 55ps 40ps Audio and Signal processor system output APPLICATIONS PACKAGE DIMENSIONS ■ DVD players/recorders (Unit : mm) ■ DVD car navigation system Weight: 0.07g ORDERING INFOMATION Device SM8707EV SM8707FV Package 16pin VSOP SEIKO NPC CORPORATION - 1 SM8707E/F PINOUT (Top view) VDD1 1 16 NC VSS1 SO2 MO1 FSEL MO2(E ver.) NC(F ver.) SO1 VDD2 VDD3 VSS2 VSS3 XTI XTO AO2 8 9 AO1 PIN DESCRIPTION No. Name I/O 1 VDD1 - Supply for digital block 2 VSS1 - Ground for digital block 3 MO1 O Video system output MO2(E ver.) O Video system output NC(F ver.) - Non connection output (leave pin open circuit) 5 VDD2 - Supply for analog block 6 VSS2 - Ground for analog block 7 XTI I Crystal oscillator connection or external clock input 8 XTO O Crystal oscillator connection 9 AO1 O Audio system output 10 AO2 O Audio system output 11 VSS3 - Ground for digital block 12 VDD3 - Supply for digital block 13 SO1 O Signal processor system output 14 FSEL I Sampling frequency select 15 SO2 O Signal processor system output 16 NC - Non connection (leave pin open circuit or connect to VDD) 4 Description SEIKO NPC CORPORATION - 2 SM8707E/F BLOCK DIAGRAM FSEL XTI XTO Reference Divider 0 Phase Detector 0 Charge Pump 0 AO1 LPF 0 VCO 0 AO2 X′tal OSC Loop Divider 0 SO1 Control Logic Reference Divider 1 Phase Detector 1 Charge Pump 1 LPF 1 SO2 VCO 1 MO1 Loop Divider 1 MO2(E ver.) NC (F ver.) SEIKO NPC CORPORATION - 3 SM8707E/F Note: Unless otherwise noted, VDD applies to VDD1, VDD2, and VDD3. Similarly, VSS applies to VSS1, VSS2, and VSS3. SPECIFICATIONS Absolute Maximum Ratings Parameter Supply voltage range Supply voltage deviation Symbol Rating Unit VDD1, VDD2, VDD3 -0.3 to +6.5 V ± 0.1 V VIN -0.3 to VDD+0.3 V VOUT -0.3 to VDD+0.3 V PD 165 mW TSTG -55 to +125 C VDD1-VDD2, VDD1-VDD3, VDD2-VDD3 Input voltage range Output voltage range Power dissipation Storage temperature range Recommended Operating Conditions VSS=VSS1=VSS2=VSS3=0V unless otherwise noted. SM8707E Parameter Supply voltage ranges Symbol Rating Condition Unit MIN TYP MAX VDD1,VDD2,VDD3 （Note 1,2,3） +3.0 - +3.6 V Output load capacitance 1 CL1 MO1 output - - 40 pF Output load capacitance 2 CL2 MO2 output - - 25 pF Output load capacitance 3 CL3 SO1,SO2,AO1,AO2 outputs - - 15 pF Master clock frequency fXTAL When using crystal oscillator - 27.0000 - MHz Operating temperature range TOPR -10 - +75 ℃ SM8707F Parameter Supply voltage ranges Symbol VDD1,VDD2,VDD3 Rating Condition （Note 1,2,3） Unit MIN TYP MAX +3.0 - +3.6 V Output load capacitance 1 CL1 MO1,SO1,SO2 outputs - - 25 pF Output load capacitance 2 CL2 AO1,AO2 outputs - - 15 pF When using crystal oscillator - 27.0000 - MHz -40 - +85 ℃ Master clock frequency fXTAL Operating temperature range TOPR Note 1. The supply voltage is defined relative to VSS=0V. Note 2. The supply voltages applied on VDD1, VDD2 and VDD3 should be derived from a common supply source. Note 3. If the supply voltages on VDD1, VDD2 and VDD3 are from different sources, they should be applied simultaneously. The SM8707 may be damaged if the supply voltage timing is different. SEIKO NPC CORPORATION - 4 SM8707E/F DC Electrical Characteristics ■ SM8707E fXTAL=27.0000MHz, VDD=3.3V ± 0.3V, VSS=0V, Ta=-10 to +75C unless otherwise noted. ■ SM8707F fXTAL=27.0000MHz, VDD=3.3V ± 0.3V, VSS=0V, Ta=-40 to +85C unless otherwise noted. Parameter Current consumption Input voltage Symbol IDD Unit MIN TYP MAX VDD - 35 45 0.8VDD - - - - 0.2VDD VIN=VDD - - 1 VIN=0V -100 - - VIN=VDD - - 40 VIN=0V -40 - - Crystal oscillator connected, mA no load on all outputs VIH VIL IIL1 IIH2 IIL2 Output voltage Rating Condition VDD=3.3V,Ta=25℃,fs=48kHz, IIH1 Input current Pins FSEL,XTI FSEL*1 XTI VDD=3.3V VOH All outputs IOH=-2mA VDD-0.4 - - VOL excluding XTO IOL=2mA - - 0.4 V A V *1. FSEL pin has Schmitt-trigger input and built-in pull-up resistor. SEIKO NPC CORPORATION - 5 SM8707E/F AC Electrical Characteristics SM8707E fXTAL=27.0000MHz, VDD=3.3V±0.3V, VSS=0V, Ta=-10 to +75C unless otherwise noted. Parameter External input clock frequency *1 Symbol fXTI Pins XTI MO1 Output clock rise time *2 tr MO2 fall time *2 Output clock jitter*3 tf duty cycle*2 use only CL=40pF, transition between VOL=0.2VDD and VOH=0.8VDD CL=25pF, transition between VOL=0.2VDD and VOH=0.8VDD CL=15pF, transition AO1,AO2 VOL=0.2VDD and VOH=0.8VDD MO2 CL=40pF, transition between between VOH=0.8VDD and VOL=0.2VDD CL=25pF, transition between VOH=0.8VDD and VOL=0.2VDD Unit MIN TYP MAX - 27.0000 - - 2.0 - - 2.0 - - 2.0 - - 2.0 - - 2.0 - - 2.0 - MHz ns ns SO1,SO2, CL=15pF, transition AO1,AO2 VOH=0.8VDD and VOL=0.2VDD MO1 Ta=25℃,CL=40pF,VO=0.5VDD - 20 - tjitter MO2 Ta=25℃,CL=25pF,VO=0.5VDD - 20 - (1-sigma) SO1,SO2, Ta=25℃,CL=15pF,VO=0.5VDD - 55 - MO1 Ta=25℃,CL=40pF,VO=0.5VDD 45 50 55 MO2 Ta=25℃,CL=25pF,VO=0.5VDD 45 50 55 Ta=25℃,CL=15pF,VO=0.5VDD 45 50 55 - - 1 s - 1 5 ms AO1,AO2 Output clock Applies to external clock input SO1,SO2, MO1 Output clock Rating Condition Dt SO1,SO2, AO1,AO2 Settling time*2 ts Power-up time*2*4 tp AO1,AO2 All outputs excluding XTO between ps % *1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. *2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. *3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. *4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches ±0.1% of the specified frequency. SEIKO NPC CORPORATION - 6 SM8707E/F SM8707F fXTAL=27.0000MHz, VDD=3.3V±0.3V, VSS=0V, Ta=-40 to +85C unless otherwise noted. Parameter Symbol External input clock frequency *1 fXTI Pins XTI MO1,SO1, Output clock tr rise time*2 SO2 AO1,AO2 MO1,SO1, Output clock tf fall time*2 AO1,AO2 Output clock jitter Output clock duty cycle SO2 *2 *3 tjitter (1-sigma) MO1 SO1,SO2 AO1,AO2 MO1,SO1, Dt SO2 AO1,AO2 Settling time*2 ts Power-up time*2*4 tp Rating Condition TYP MAX - 27.0000 - - 2.0 - Applies to external clock input use only CL=25pF, transition between VOL=0.2VDD and VOH=0.8VDD CL=15pF, transition between VOL=0.2VDD and VOH=0.8VDD CL=25pF, transition between VOH=0.8VDD and VOL=0.2VDD CL=15pF, transition Unit MIN between MHz ns - 2.0 - - 2.0 ns - 2.0 - - 20 - - 40 - Ta=25℃,CL=15pF,VO=0.5VDD - 40 - Ta=25℃,CL=25pF,VO=0.5VDD 45 50 55 Ta=25℃,CL=15pF,VO=0.5VDD 45 50 55 - - 1 s - 1 5 ms VOH=0.8VDD and VOL=0.2VDD Ta=25℃,CL=25pF,VO=0.5VDD All outputs excluding XTO All outputs excluding XTO ps % *1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. *2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. *3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. *4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches ±0.1% of the specified frequency. 27MHz 27MHz DUT Active Probe (HP1152A) Oscilloscope (Infinium HP54845A) Active Probe (HP54701A) DUT DUT:Device under test Passive Probe (HP10435A) Frequency & Time Interval Analyzer (HP5371A) Figure 1. Measurement circuit 1 Oscilloscope (HP54720D + HP54721A) Jitter Measurement System (ASA,M1) DUT:Device under test Figure 2. Measurement circuit 2 SEIKO NPC CORPORATION - 7 SM8707E/F FUNCTIONAL DESCRIPTION 27MHz Master Clock The SM8707E/F 27MHz master clock circuit is configured, as shown in Figure 3 with the crystal oscillator element connected between XTI(Pin 7) and XTO(Pin 8). Alternatively, the 27MHz master clock can be supplied from an external master clock input on XTI, as shown in Figure 4. If an external input clock on XTI is used, it is recommended that the frequency be 27.0000MHz, with 50% duty, and 3.3V voltage amplitude level. Furthermore, when using an external clock input, the input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. C1 XTI(Pin 7) Oscillator Internal Circuits XTO(Pin 8) C2 C1,C2=5 to 33pF MO Figure 3. Crystal oscillator connection External Clock XTI(Pin 7) Oscillator Open Internal Circuits XTO(Pin 8) MO Figure 4. External clock input SEIKO NPC CORPORATION - 8 SM8707E/F Sampling Frequency and Output Clock Frequency SM8707E The SM8707E sampling frequency fs can be switched between 44.1kHz when FSEL(Pin 14) is LOW, and 48kHz when FSEL is HIGH. The audio outputs(AO1 and AO2) are equivalent to 512fs, where fs is determined by the setting on FSEL. In addition, the signal processor outputs(SO1 and SO2) are 33.8688MHz clocks derived from the master clock. And the video outputs(MO1 and MO2) are 27MHz clocks, identical to the master clock. The SM8707E supported clock frequencies are shown in Table 1. FSEL (Pin 14) Sampling Output clock frequency [MHz] frequency fs AO1 AO2 SO1 SO2 MO1 MO2 [kHz] (Pin 9) (Pin 10) (Pin 13) (Pin15) (Pin 3) (Pin 4) 24.5760 24.5760 (512fs) (512fs) 33.8688 33.8688 27.0000 27.0000 22.5792 22.5792 (512fs) (512fs) 33.8688 33.8688 27.0000 27.0000 HIGH 48 LOW 44.1 Table 1. Sampling frequency and output clock frequency (27.0000MHz master clock frequency) SM8707F The SM8707F sampling frequency fs can be switched between 44.1kHz when FSEL(Pin 14) is HIGH, and 48kHz when FSEL is LOW. The audio outputs(AO1 and AO2) are equivalent to 768fs, where fs is determined by the setting on FSEL. In addition, the signal processor outputs(SO1 and SO2) are 16.9344MHz and 33.8688MHz clocks, respectively, derived from the master clock. The video output (MO1) is a 27MHz clock, identical to the master clock. The SM8707F supported clock frequencies are shown in Table 2. FSEL (Pin 14) Sampling Output clock frequency [MHz] frequency fs AO1 AO2 SO1 SO2 MO1 [kHz] (Pin 9) (Pin 10) (Pin 13) (Pin15) (Pin 3) 33.8688 33.8688 (768fs) (768fs) 16.9344 33.8688 27.0000 36.8640 36.8640 (768fs) (768fs) 16.9344 33.8688 27.0000 HIGH 44.1 LOW 48 Table 2. Sampling frequency and output clock frequency (27.0000MHz master clock frequency) SEIKO NPC CORPORATION - 9 SM8707E/F Spike Noise Prevention Function SM8707F/E have a spike noise prevention circuit that prevents any spike noise generation in the audio output clocks when the sampling frequency is switched using FSEL. The state of the AOx output before and after FSEL is switched is shown in Figure 5. When FSEL is switched, either from LOW to HIGH or HIGH to LOW, the spike noise prevention circuit stops the AOx clock output by a maximum of 1s, and then the output clock changes to reflect the current FSEL setting. E version : fs=48kHz F version : fs=44.1kHz E version : fs=44.1kHz F version : fs=48kHz FSEL AOx 1μs(max) Figure 5. Spike noise prevention circuit timing at sampling frequency switching Sampling Frequency Switching Settling Time The clock output response when the sampling frequency is switched using FSEL is shown in Figure 6. SM8707E/F have a spike noise prevention circuit which stops the output AOx clocks for a fixed interval, which means the settling time is a maximum 1s when the sampling frequency is switched. FSEL 0.8VDD 0.2VDD ts AOx E version : fs=44.1kHz F version : fs=48kHz ts E version : fs=48kHz F version : fs=44.1kHz MOx 27.0000MHz SOx 33.8688MHz (E version) 16.9344/33.8688MHz (F version) E version : fs=44.1kHz F version : fs=48kHz Figure 6. Output signal switching timing SEIKO NPC CORPORATION - 10 SM8707E/F SM8707E/F OUTPUT FREQUENCY LISTING Version SM8707E FSEL Sampling polarity frequency fs (Pin 14) [kHz] Pin 3 Pin 4 H 48.0 27.0000 27.0000 L 44.1 27.0000 27.0000 40 MO1 Output load capacitance [pF] Pin name H 44.1 Output clock frequency [MHz] Pin 9 Pin 10 24.5760 24.5760 (512fs) (512fs) 22.5792 22.5792 (512fs) (512fs) 25 15 MO2 27.0000 - SM8707F L 48.0 Output load capacitance [pF] Pin name 27.0000 Pin 13 Pin 15 33.8688 33.8688 33.8688 33.8688 15 15 15 AO1 AO2 SO1 SO2 33.8688 33.8688 (768fs) (768fs) 16.9344 33.8688 36.8640 36.8640 (768fs) (768fs) 16.9344 33.8688 25 - 15 15 25 25 MO1 NC AO1 AO2 SO1 SO2 SEIKO NPC CORPORATION - 11 SM8707E/F 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 mass production 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 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] ND12003-E-00 2012.1 SEIKO NPC CORPORATION - 12