How Does PotatoSemi Kill inside Noise Of IC ? Voltage mode differential Logic. New Patent IP. Improved CMOS logic by using high frequency noise cancellation technology VDD VDD Potato IC Normal IC vv Input1 Input2 Input3 2 1 High Frequency Noise Cancellation bonding diagram 18 17 5 16 5 15 6 7 14 7 14 8 13 8 13 Die 6 OUT A B A B 16 Die 15 Normal IC bonding diagram 11 12 High Frequency Differential to Single Noise Cancellation Translator A Input Pad A OUT B Input Pad OUT A OUT B Q A OUT Output Pad B OUT OUT B Q Normal High Noise OUT Logic Core A OUT B D CK D SET SET Q CK Q RESET RESET Q Q A OUT C OUT C B OUT B vv vv t vv t gg PotatoSemi vv gg 17 Normal Chip Die S S D S S Q D CK CK R R Q R R D D CK CK A gg 18 4 9 10 High OUT Frequency A Voltage Mode Noise B Cancellation Differential Logic Core OUT B OUT A 3 11 12 A OUT B GND GND Potato Chip Die OUT A B A B 20 19 4 Single to Differential Noise Cancellation Translator A B A B 2 1 3 Single to Differential Noise Cancellation Translator B gg Output1 Output2 Output3 20 19 9 10 A Die High frequency noise cancellation technology t Contact Potato Semiconductor for IP or detail. t gg Normal High Noise Noise Cancellation Logic Voltage Mode Differential Logic Improved CMOS logic by using high frequency noise cancellation technology Voltage Mode Differential CMOS Logic NAND gate OUT A A C OUT A B OUT A B OUT B B A OUT A B C B OUT Advantage: 1. Very high output frequency. (The max. frequency can reach process max. frequency.) 2. Switching noise can be eliminating by note to note noise cancellation. (Noise from note A & noise from note A bar will cancel each other. Noise from note B & noise from note B bar will cancel each other. Noise from note C & noise from note C bar will cancel each other. Noise from note out & noise from note out bar will cancel each other.) 3. Rail to rail output signals. 4. Without switching noise, logic output signal can be much stronger then other logic output signal. 5. Low jitter. 6. Output signals can drive long distance. 7. No error bit. 8. No static current. 9. Design is very similar to normal CMOS logic. It can be used for high frequency & high performance VLSI design. Disadvantage: More complicate design then normal CMOS logic Bigger die size then normal low speed CMOS logic. Example: Potato Semiconductor ICs are using this technology such as Normal static CMOS Logic NAND gate A B OUT Current mode differential Logic Dynamic Logic Dynamic NAND gate A CLK B Current Mode Differential NAND gate OUT A OUT B OUT VCC R1 CLK R2 OUT OUT A B A B OUT A B OUT VB1 VB2 VEE (-4.5 to -5.2V) Advantage: Advantage: Advantage: 1. Simple. 2. Small Die size. 3. No static current 1. Higher output frequency then normal logic 2. Less input capacitance & less switching noise from input A & B then normal static logic. 1. High output frequency. 2. Low noise. 3. Low jitter. Disadvantage: Disadvantage: Disadvantage: 1. High switching noise. 2. Low operating frequency. 3. Higher error bit rate. 4. Higher jitter. 5. higher propagation delay. 6. weak output signal. 1. High Power consumption. 2. Can not run lower clock frequency 3. Output signal is switching all the time. 1. Current source design with high static current. 2. Complicate design. 3. Difficult to design a perfect current source. 4. Need many extra components such as 50 ohm loading resistors. Example: Example: Example: Most low frequency logic ICs are using this technology such as regular 74 series CMOS logic. Most high clock frequency ASIC ICs are using this technology such as graphic chips. They usually work with a big fan. Most high frequency outputs are using this technology such as ECL logic, PECL, LVDS, CML etc. VDD All electronics engineers know decoupling capacitor. However, do you know how to make them working properly? GND There are four examples show below. Only last circuit can clean noise. VDD Only opposite noise plus decoupling capacitor working together can How does decoupling capacitor work? release electronics from capacitor & clean up IC & system noise. Bring Power into ICs GND Example 1 Normal CMOS logic without decoupling capacitor Power voltage between vv & gg will change because of the switching noise. VDD A vv Die gg Input B Output A B NAND vv OUT VV NOR OUT gg gg t GND Example 2 Normal CMOS logic with decoupling capacitor Decoupling capacitor will maintain power voltage between vv & gg, but it can not clean noise . VDD A Input vv gg B Output A B NAND vv OUT VV NOR OUT GND gg t gg Example 3 Voltage mode differential logic without decoupling capacitor Power voltage between vv & gg will change because of the positive noise & its opposite noise. VDD Input vv Die gg Output GND A B A B NAND A B A B NOR OUT OUT OUT vv VV gg gg OUT t Example 4 (Potato technology ) Voltage mode differential logic with decoupling capacitor Positive noise & its opposite noise will cancel each other. VDD Input vv gg GND Output A B A B NAND A B A B NOR OUT OUT OUT OUT vv VV release electronics release electronics gg gg t How does the New Technology work ? By using our special IO interface, logic cells & design rule, we can convert most of existing Logic chips into much higher frequency than it was before. After we convert the standard chips, all chips become much more reliable, much less noise and much higher running frequency. Compare to 74 Series Logic PotatoSemi TI A Y B Fairchild Renesa NXP PO74G32A SN74ALVC32 74LVX32 HD74LV32A 74ALVC32 1.65V ~ 3.6V 1.65V ~ 3.6V 2V - 3.6V 2V ~ 5.5V 1.65V ~ 3.6V Max. Frequency 2 GHz 200 MHz 200 MHz 200 MHz 200 MHz Propagation delay (Max) 1.5 ns 2.8 ns 7.5 ns 6.5 ns 2.8 ns Low input capacitance 4.0 pf 4.0 pf 4.0 pf 4.0 pf 3.5 pf Device Vcc OUT1 OUT2 OUT3 OUT4 Compare to Clock Buffers OUT5 IN1 OUT6 OUT7 OUT8 OUT9 OUT10 PotatoSemi Pericom IDT ICS Cypress NXP Device PO49FCT3807B 49FCT3807 74FCT3807E-D MK3807-01 CY2CC810 PCK3807A Vcc 1.65V ~ 3.6V 3.3V 3.3V 3.3V 2.5V or 3.3V 2.5V or 3.3V Max. Frequency 800M Hz 156 MHz 166 MHz 100MHz 250MHz 150 MHz pin to pin skew 80 ps 250 ps 100 ps 350 ps 380 ps 120 ps Pulse skew 250 ps 250 ps 250 ps 350 ps 200 ps 300 ps Propagation delay (Max) 2.0 ns 2.5 ns 2.0 ns 3.8 ns 3.5 ns 2.5 ns Low input capacitance 3 pf 3.0 pf 3 pf 5 pf 3 pf 3 pf How does the New Technology work ? Compare to GHz Bus Switch A0 SW B0 A4 SW B4 A5 SW B5 A9 SW B9 EN1 EN2 PotatoSemi Pericom TI Fairchild Device PO3B1000A PI3CH1000 SN74CB3Q3384A FST3384 Vcc 1.65V ~ 3.6V 2.5V / 3.3V 2.3V ~ 3.6V 4.0V~5.5V Wide Bandwidth ( -3db ) AC 1.2GHz 500 MHz 500 MHz N/A Near-Zero Delay Yes Yes Yes Yes Special design for differential signals Yes No No No 18 8 9 20 Ron (Max.) DC Con T( yp.) 7.9 pf 6.4 pf 10 pf 5 pf Ultra-Low Quiescent Power (Typ.) 0.1µA N/A 1000 µA 0.1µA Quiescent Power (Max.) 3 µA 800 µA 2000 µA 3 µA D0 Compare to GHz Translator D0 OUT0 D1 OUT1 D1 PotatoSemi Device OnSemi PO100HSTL23A MC100EPT23-D Micrel TI ICS SY89323L SN65LVDS9637D ICS83023I Vcc 2.4V ~ 3.6V 3V-3.6V 3V-3.6V 3V-3.6V 3V-3.6V Max. Frequency 1 GHz 275 MHz 275 MHz 200 MHz 350 MHz pin to pin skew 150 ps 125 ps 300 ps 400 ps 60 ps output skew (different package) 300 ps 500 ps 500 ps 1000 ps 500 ps propagation delay (Max) 1.8 ns 2.4 ns 2.5 ns 3 ns 2.4 ns Next Generation Logic Cells The best way to improve an IC is from the core circuit structure! High Cost High Cost High Cost Low Cost & Easy implement Best Performance High Frequency Noise Cancellation CMOS Logic Current Performance DIP, SMC , BGA, Flip Chip Improve Package 45nm, 55nm, 65nm, 90nm, 0.13um, 0.18um, 0.25um, 0.35um, 0.5um Improve Process GHz CMOS Output X86, Dual Core, 64 Architecture, etc. Improve Architecture 50 years old High Noise CMOS Logic Improve Circuit Structure CMOS technology has been widely used for more then 50 years. It delivers the low cost with high yield. However, because of the unbalanced CMOS structure, it will generate high noise into Power & ground. From the past 50 years of IC history, our GHz CMOS output driver is the only technology that you can kill your chip internal ground and power noise without scarifies your output performance. Because of this noise cancellation technology, our output frequency can be 7 to 10 times faster then anyone else in this world. In addition, because of this low noise-tech nology, any ICs with our output drivers can deliver the accuracy without any error. The example shows the output signal from our standard logic PO74G32A. The VCC is 3V. The output frequency from the measurement is 2GHz with probe loading. The max frequency will be more than 2GHz. Vp-p is 2.075V. Vhigh is 2.175V. Vlow is 100mV.