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Data Sheet December 2008 FN6814.0 10-Bit, 275/210/170/105MSPS Con
Top Searches for this datasheetKAD2710C Data Sheet December 2008 FN6814.0 10-Bit, 275/210/170/105MSPS Converter KAD2710C industry's lowest power, 10-bit, 275MSPS, high performance Analog-to-Digital converter. designed with Intersil's proprietary FemtoChargetechnology standard CMOS process. KAD2710C offers high dynamic performance (55.6dBFS 138MHz) while consuming less than 265mW. Features include over-range indicator selectable divide-by-2 input clock divider. KAD2710C member pin-compatible family offering 10-bit ADCs with sample rates from 350MSPS LVDS-compatible LVCMOS outputs (Table This family products available 68-pin RoHS-compliant packages with exposed paddle. Performance specified over full industrial temperature range (-40°C +85°C). CLKDIV AVDD2 AVDD3 OVDD Features On-Chip Reference Internal Sample Hold 1.5VP-P Differential Input Voltage 600MHz Analog Input Bandwidth Two's Complement Binary Output Over-Range Indicator Selectable Clock Input LVCMOS Outputs Pb-Free (RoHS Compliant) Applications High-Performance Data Acquisition Portable Oscilloscope Medical Imaging Cable Head Ends CLK_P CLK_N Clock Generation CLKOUTP CLKOUTN Power-Amplifier Linearization Radar Satellite Antenna Array Processing Broadband Communications Point-to-Point Microwave Systems VREF 10-bit 275MSPS 1.21V LVCMOS Drivers Communications Test Equipment Specs 55.6dBFS 275MSPS, 138MHz SFDR 68.5dBc 275MSPS, 138MHz Power consumption <265mW 275MSPS VREFSEL OVSS AVSS Pin-Compatible Family TABLE PIN-COMPATIBLE PRODUCTS RESOLUTION, SPEED LVDS OUTPUTS LVCMOS OUTPUTS Bits 350MSPS Bits 275MSPS Bits 210MSPS Bits 170MSPS Bits 105MSPS Bits 275MSPS Bits 210MSPS Bits 170MSPS Bits 105MSPS KAD2708L-35 KAD2708L-27 KAD2708L-21 KAD2708L-17 KAD2708L-10 KAD2710L-27 KAD2710L-21 KAD2710L-17 KAD2710L-10 KAD2708C-27 KAD2708C-21 KAD2708C-17 KAD2708C-10 KAD2710C-27 KAD2710C-21 KAD2710C-17 KAD2710C-10 CAUTION: These devices sensitive electrostatic discharge; follow proper Handling Procedures. 1-888-INTERSIL 1-888-468-3774 Intersil (and design) registered trademark Intersil Americas Inc. FemtoCharge trademark Kenet Inc. Copyright Intersil Americas Inc. 2008. Rights Reserved other trademarks mentioned property their respective owners. KAD2710C Ordering Information PART NUMBER (Note) KAD2710C-27Q68 KAD2710C-21Q68 KAD2710C-17Q68 KAD2710C-10Q68 SPEED (MSPS) TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. L68.10x10B L68.10x10B L68.10x10B L68.10x10B NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, 100% matte plate plus anneal termination finish, which RoHS compliant compatible with both SnPb Pb-free soldering operations). Intersil Pb-free products classified Pb-free peak reflow temperatures that meet exceed Pb-free requirements IPC/JEDEC STD-020. FN6814.0 December 2008 KAD2710C Table Contents Absolute Maximum Ratings Thermal Information. Electrical Specifications Digital Specifications Timing Diagram Timing Specifications Thermal Impedance. Descriptions Pinout Typical Performance Curve Functional Description Reset Voltage Reference. Analog Input Clock Input Jitter. Digital Outputs Equivalent Circuits. Layout Considerations Split Ground Power Planes Clock Input Considerations. Bypass Filtering LVCMOS Outputs. Unused Inputs Definitions. Package Outline Drawing L68.10x10B FN6814.0 December 2008 KAD2710C Absolute Maximum Ratings AVDD2 AVSS. -0.4V 2.1V AVDD3 AVSS. -0.4V 3.7V OVDD2 OVSS -0.4V 2.1V Analog Inputs AVSS. -0.4V AVDD3 0.3V Clock Inputs AVSS. -0.4V AVDD2 0.3V Logic Inputs AVSS (VREFSEL, CLKDIV) -0.4V AVDD3 0.3V Logic Inputs OVSS (RST, 2SC) -0.4V OVDD2 0.3V VREF AVSS -0.4V AVDD3 0.3V Analog Output Currents 10mA Logic Output Currents 10mA LVDS Output Currents 20mA Thermal Information Operating Temperature .-40°C +85°C Storage Temperature .-65°C +150°C Junction Temperature +150°C CAUTION: operate near maximum ratings listed extended periods time. Exposure such conditions adversely impact product reliability result failures covered warranty. Electrical Specifications specifications apply under following conditions unless otherwise noted: AVDD2 1.8V, AVDD3 3.3V, OVDD 1.8V, -40°C +85°C (typical specifications +25°C), fSAMPLE 350MSPS, 270MSPS, 210MSPS, 170MSPS 105MSPS, Nyquist -0.5dBFS. KAD2710C-27 PARAMETER SPECIFICATIONS Analog Input Full-Scale Analog Input Range Full Scale Range Temp. Drift Common-Mode Output Voltage Power Requirements 1.8V Analog Supply Voltage 3.3V Analog Supply Voltage 1.8V Digital Supply Voltage 1.8V Analog Supply Current 3.3V Analog Supply Current 1.8V Digital Supply Current Power Dissipation SPECIFICATIONS Maximum Conversion Rate Minimum Conversion Rate Differential Nonlinearity Integral Nonlinearity Signal-to-Noise Ratio 10MHz Nyquist 430MHz Signal-to-Noise Distortion SINAD 10MHz Nyquist 430MHz -1.0 ±0.8 -2.5 ±1.0 55.7 53.5 55.6 55.2 55.3 52.5 55.2 54.4 -1.0 ±0.8 -2.5 ±1.0 56.4 53.5 56.2 54.8 56.1 52.5 56.0 53.7 -1.0 ±0.8 -2.5 ±1.0 56.6 53.5 56.5 54.6 56.3 52.5 56.2 53.4 -1.0 ±0.8 -2.5 ±1.0 56.6 53.5 56.5 54.5 56.3 52.5 56.2 53.2 MSPS MSPS dBFS dBFS dBFS dBFS dBFS dBFS AVDD2 AVDD3 OVDD IAVDD2 IAVDD3 OVDD KAD2710C-21 KAD2710C-17 KAD2710C-10 SYMBOL CONDITIONS UNITS AVTC Full Temp VP-P ppm/°C 3.15 3.45 3.45 3.15 3.45 3.15 3.45 3.15 FN6814.0 December 2008 KAD2710C Electrical Specifications specifications apply under following conditions unless otherwise noted: AVDD2 1.8V, AVDD3 3.3V, OVDD 1.8V, -40°C +85°C (typical specifications +25°C), fSAMPLE 350MSPS, 270MSPS, 210MSPS, 170MSPS 105MSPS, Nyquist -0.5dBFS. (Continued) KAD2710C-27 PARAMETER Effective Number Bits SYMBOL ENOB CONDITIONS 10MHz Nyquist 430MHz Spurious-Free Dynamic Range SFDR 10MHz Nyquist 430MHz Two-Tone SFDR Word Error Rate Full Power Bandwidth 2TSFDR 133MHz, 135MHz FPBW KAD2710C-21 KAD2710C-17 KAD2710C-10 UNITS 68.5 68.5 63.8 10-12 71.1 62.6 10-12 60.1 10-12 60.9 10-12 Bits Bits Bits Digital Specifications PARAMETER INPUTS Input Voltage High (VREFSEL) Input Voltage (VREFSEL) Input Current High (VREFSEL) Input Current (VREFSEL) Input Voltage High (CLKDIV) Input Voltage (CLKDIV) Input Current High (CLKDIV) Input Current (CLKDIV) Input Voltage High (RST,2SC) Input Voltage (RST,2SC) Input Current High (RST,2SC) Input Current (RST,2SC) Input Capacitance CLKP, CLKN Differential Input Voltage CLKP, CLKN Differential Input Resistance CLKP, CLKN Common-Mode Input Voltage LVCMOS OUTPUTS Output Voltage High Output Voltage Output Rise Time Output Fall Time VCDI RCDI VCCI OVDD OVSS AVDD3 AVSS 0.8*OVDD2 0.2*OVDD2 AVDD3 AVSS 0.8*AVDD3 0.2*AVDD3 0.8*AVDD3 0.2*AVDD3 VP-P SYMBOL CONDITIONS UNITS FN6814.0 December 2008 KAD2710C Timing Diagram Sample CLKN CLKP tPID CLKOUT tPCD D[9:0] Data invalid Data N-L+1 Data FIGURE LVCMOS TIMING DIAGRAM Timing Specifications PARAMETER Aperture Delay Aperture Jitter Input Clock Data Propagation Delay Data Hold Time Output Clock Data Propagation Delay Latency (Pipeline Delay) Overvoltage Recovery SYMBOL tPID tPCD tOVR -300 UNITS cycles cycle Thermal Impedance PARAMETER Junction Paddle (Note NOTE: Paddle soldered ground plane. SYMBOL UNIT °C/W Electrostatic charge accumulates humans, tools equipment discharge through metallic package contacts (pins, balls, exposed paddle, etc.) integrated circuit. Industry-standard protection techniques have been utilized design this product. However, reasonable care must taken storage handling sensitive products. Contact Intersil specific sensitivity rating this product. FN6814.0 December 2008 KAD2710C Descriptions NUMBER 11-13, 29-33, 64-66 Exposed Paddle AVSS NAME AVDD2 AVSS VREF VREFSEL AVDD3 INP, CLKDIV CLKN, CLKP OVSS OVDD2 CLKOUT 1.8V Analog Supply Analog Supply Return Reference Voltage Out/In Reference Voltage Select (0:Int 1:Ext) Common-Mode Voltage Output 3.3V Analog Supply Analog Input Positive, Negative Connect Clock Divide (Active Low) Clock Input Complement, True Output Supply Return 1.8V LVCMOS Supply Power Reset (Active Low) LVCMOS (LSB) Output LVCMOS Output LVCMOS Output LVCMOS Output LVCMOS Clock Output LVCMOS Output LVCMOS Output LVCMOS Output LVCMOS Output LVCMOS Output LVCMOS (MSB) Output Over-Range Connect OVDD2 Two's Complement Select (Active Low) Analog Supply Return FUNCTION FN6814.0 December 2008 KAD2710C Pinout KAD2710C QFN) VIEW AVDD2 AVSS VREF VREFSEL AVDD3 AVSS AVSS AVDD2 AVDD3 AVDD3 CLKDIV OVDD2 OVDD2 OVDD2 OVSS OVDD2 KAD2710C View Scale OVSS OVDD2 CLKOUT OVDD2 AVDD2 AVSS AVDD2 AVSS CLKN CLKP AVSS AVDD3 OVSS OVDD2 FIGURE CONFIGURATION FN6814.0 December 2008 KAD2710C Typical Performance Curves SNR(dBFS), SFDR(dBc) SFDR HD2, (dBc AVDD2 OVDD2 1.8V, AVDD3 3.3V, +25°C, fSAMPLE 275MSPS, 137MHz, -0.5dBFS unless noted. (MHz) -100 (MHz) FIGURE SFDR FIGURE SNR(dBFS), SFDR(dBc) HD2, (dBc) SFDR (dBFS) (dBFS) FIGURE SFDR FIGURE SFDR SNR(dBFS), SFDR(dBc) HD2, HD3(dBc) fSAMPLE (MSPS) -100 SAMPLE (fS) (MSPS) FIGURE SFDR fSAMPLE FIGURE fSAMPLE FN6814.0 December 2008 KAD2710C Typical Performance Curves Power Dissipation (PD) (mW) (LSBs) 0.75 0.25 -0.25 -0.5 -0.75 AVDD2 OVDD2 1.8V, AVDD3 3.3V, +25°C, fSAMPLE 275MSPS, 137MHz, -0.5dBFS unless noted. (Continued) fSAMPLE (fS) (MSPS) FIGURE POWER DISSIPATION fSAMPLE CODE 1023 FIGURE DIFFERENTIAL NONLINEARITY OUTPUT CODE (LSBs) -0.5 CODE 1023 FIGURE INTEGRAL NONLINEARITY OUTPUT CODE FIGURE NOISE HISTOGRAM -0.49dBFS -0.49dBFS AMPLITUDE (dB) 56.5dBFS AMPLITUDE (dB) 56.5dBF 71.0dBc SINAD 55.7dBc -84.8dBc -71.0dBc 70.0dBc INAD 55.7dBc -94.3dBc -70.5dBc -100 -120 -100 -120 FREQUENCY (MHz) FREQUE (MHz) FIGURE OUTPUT SPECTRUM; 10MHz FIGURE OUTPUT SPECTRUM; 134MHz FN6814.0 December 2008 KAD2710C Typical Performance Curves -0.50dBFS AVDD2 OVDD2 1.8V, AVDD3 3.3V, +25°C, fSAMPLE 275MSPS, 137MHz, -0.5dBFS unless noted. (Continued) -7dBFS 56.0dBFS AMPLITUDE (dB) -100 -120 RELATIVE POWER (dB) 2TSFDR 71dBc IMD3 -78dBFS 63.6dBc SINAD 55.1dBc -67.8dBc 63.6dBc -100 -120 FREQ UENCY (MHz) FREQUENCY (MHz) FIGURE OUTPUT SPECTRUM; 300MHz FIGURE TWO-TONE SPECTRUM; 69MHz, 70MHz RELATIVE POWER (dB) -100 -120 -7dBFS RELATIVE POWER (dB) -100 -120 -7dBFS 2TSFDR 63dBc IMD3 -75dBFS 2TSFDR 74.7dBc IMD3 -84.5dBFS FREQUENCY (MHz) FREQUENCY (MHz) FIGURE TWO-TONE SPECTRUM; 140MHz, 141MHz FIGURE TWO-TONE SPECTRUM; 300MHz, 305MHz SNR(dBFS), SFDR(dBc) SFDR tCAL(ms) Ambient Temperature deg.C SAMPLE (MSPS) FIGURE TEMPERATURE FIGURE CALIBRATION TIME FN6814.0 December 2008 KAD2710C Functional Description KAD2710 bit, 275MSPS converter pipelined architecture. input voltage captured sample hold circuit converted unit charge. Proprietary charge-domain techniques used compare input series reference charges. These comparisons determine digital code each input value. converter pipeline requires sample clocks produce result. Digital error correction also applied, resulting total latency clock cycles. This evident user latency between start conversion data being available digital outputs. power-up, self-calibration performed minimize gain offset errors. reset (RST) held internally power-up will remain that state until calibration complete. clock frequency should remain fixed during this time. Calibration accuracy maintained sample rate which performed, therefore should repeated clock frequency changed more than 10%. Recalibration initiated pin, power cycling, time. Voltage Reference VREF reference voltage which sets fullscale input voltage chip. This requires bypass capacitor 0.1uF minimum. internally generated bandgap reference voltage provided on-chip voltage buffer.buffer sink source 50µA externally. external voltage applied this provide more accurate reference than internally generated bandgap voltage, match full-scale reference multiple KAD2710C chips.One option latter configuration KAD2710C's internally generated reference external reference voltage other chips system. Additionally, externally provided reference changed from nominal value adjust full-scale input voltage within limited range. select whether full-scale reference internally generated externally provided, digital input VREFSEL internal, high external.This internal pull-up.use internally generated reference VREFSEL tied directly AVSS, external reference VREFSEL left unconnected. Analog Input core contains fully differential input (INP/INN) sample hold circuit. ideal full-scale input voltage 1.50V, centered voltage 0.86V shown Figure -0.75V 0.75V 0.86V Reset Recalibration initiated time driving minimum clock cycle. open-drain driver recommended. calibration sequence initiated rising edge RST, shown Figure over-range output (OR) high once pulled low, remains that state until calibration complete. output returns normal operation that time, important that analog input within converter's full-scale range order observe transition. input over-range state will stay high will possible detect calibration cycle. While low, output clock (CLKOUT) stops toggling low. Normal operation output clock resumes next input clock edge (CLKP/CLKN) after deasserted. 275MSPS nominal calibration time ~240ms. CLKN CLKP Calibration Time Calibration Begins Calibration Complete CLKOUTP FIGURE ANALOG INPUT RANGE Best performance obtained when analog inputs driven differentially. common-mode output voltage, VCM, should used properly bias inputs shown Figures transformer will give best noise distortion performance wideband and/or high intermediate frequency (IF) inputs. different transformer input schemes shown Figures FIGURE CALIBRATION TIMING FN6814.0 December 2008 KAD2710C 0.01µF Analog ADT1-1WT ADT1-1WT KAD2710 recommended drive circuit shown Figure clock driven single-ended, this will reduce edge rate impact performance. AVDD2 0.1µF FIGURE TRANSFORMER INPUT GENERAL APPLICATIONS CLKP 200O CLKN Clock Input TC4-1W ADTL1-12 Analog Input ADTL1-12 KAD2710 FIGURE RECOMMENDED CLOCK DRIVE 0.1µF FIGURE TRANSMISSION-LINE TRANSFORMER INPUT HIGH APPLICATIONS back-to-back transformer scheme used improve common-mode rejection, which keeps common-mode level input matched VCM. value shunt resistor should determined based desired load impedance. sample hold circuit design uses switched capacitor input stage, which creates current spikes when sampling capacitance reconnected input voltage. This creates disturbance input which must settle before next sampling point. Lower source impedance will result faster settling improved performance. Therefore transformer shunt resistance recommended optimal performance. differential amplifier used applications that require coupling. this configuration amplifier will typically determine achievable distortion. typical differential amplifier circuit shown Figure 348O 69.8O 100O Analog Input 49.9O 0.22µF clock divider optional. KAD2710C's requires clock with duty cycle optimum performance. such clock available, option generate twice desired sampling rate KAD2710C's divide-by-2 setting. This frequency divider uses rising edge clock, clock duty cycle assured. Table describes CLKDIV connection. TABLE CLKDIV SETTINGS CLKDIV AVSS AVDD DIVIDE RATIO CLKDIV internally pulled low, pull-up resistor logic driver must connected undivided clock. Jitter sampled data system, clock jitter directly impacts achievable performance. theoretical relationship between clock jitter (tJ) shown Equation illustrated Figure (EQ. Where uncertainty sampling instant. 217O KAD2710 tj=0.1p Bits 100O 69.8O 348O 0.1µF tj=1 tj=1 Bits FIGURE DIFFERENTIAL AMPLIFIER INPUT Bits tj=1 Clock Input sample clock input circuit differential pair (see Figure 29). Driving these inputs with high level 1.8VP-P each input) sine square wave will provide lowest jitter performance. Input Frequency FIGURE CLOCK JITTER FN6814.0 December 2008 KAD2710C This relationship shows that would achieved clock jitter were only non-ideal factor. reality, achievable limited internal factors such linearity, aperture jitter thermal noise. Internal aperture jitter uncertainty sampling instant shown Figure internal aperture jitter combines with input clock jitter root-sum-square fashion, since they statistically correlated, this determines total jitter system. total jitter, combined with other noise sources, then determines achievable SNR. Digital Outputs Data output parallel with LVCMOS drivers. output format (Binary Two's Complement) selected shown Table TABLE SETTINGS AVSS AVDD unconnected) MODE Two's Complement Binary Equivalent Circuits AVDD2 AVDD3 Charge Pipeline AVDD3 Csamp 0.3pF AVDD2 Clock Generation CLKP Csamp 0.3pF Charge Pipeline AVDD2 CLKN FIGURE ANALOG INPUTS FIGURE CLOCK INPUTS OVDD OVDD DATA D[9:0] FIGURE LVCMOS OUTPUTS Intersil U.S. products manufactured, assembled tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications viewed www.intersil.com/design/quality Intersil products sold description only. Intersil Corporation reserves right make changes circuit design, software and/or specifications time without notice. Accordingly, reader cautioned verify that data sheets current before placing orders. Information furnished Intersil believed accurate reliable. However, responsibility assumed Intersil subsidiaries use; infringements patents other rights third parties which result from use. license granted implication otherwise under patent patent rights Intersil subsidiaries. information regarding Intersil Corporation products, www.intersil.com FN6814.0 December 2008 KAD2710C Layout Considerations Split Ground Power Planes Data converters operating high sampling frequencies require extra care board layout. analog digital ground planes separate, analog supply ground planes should laid under signal clock inputs digital planes under outputs logic pins. Grounds should joined under chip. Effective Number Bits (ENOB) alternate method specifying Signal Noise-and-Distortion Ratio (SINAD). calculated ENOB (SINAD 1.76)/6.02 Gain Error ratio difference between voltages that cause lowest highest code transitions full-scale voltage (less LSB). typically expressed percent. Integral Non-Linearity (INL) deviation each individual code from line drawn from negative full-scale (1/2 below first code transition) through positive full-scale (1/2 above last code transition). deviation given code from this line measured from center that code. Least Significant (LSB) that smallest value weight digital word. value terms input voltage VFS/(2N where resolution bits. Missing Codes output codes that skipped will never appear output. These codes cannot reached with input value. Most Significant (MSB) that largest value weight. Pipeline Delay number clock cycles between initiation conversion appearance output pins data. Power Supply Rejection Ratio (PSRR) ratio change input voltage necessary correct change output code that results from change power supply voltage. Signal Noise-and-Distortion (SINAD) ratio signal amplitude other spectral components below half clock frequency, including harmonics excluding Signal-to-Noise Ratio (SNR) (without Harmonics) ratio signal amplitude other spectral components below one-half sampling frequency, excluding harmonics SINAD either given units carrier) when power level fundamental used reference, dBFS full scale) when converter's full-scale input power used reference. Spurious-Free-Dynamic Range (SFDR) ratio signal amplitude value peak spurious spectral component. peak spurious spectral component harmonic. Two-Tone SFDR ratio value lowest power input tone value peak spurious component, which product. Clock Input Considerations matched transmission lines inputs analog input clock signals. Locate transformers, drivers terminations close chip possible. Bypass Filtering Bulk capacitors should have equivalent series resistance. Tantalum recommended. Keep ceramic bypass capacitors very close device pins. Longer traces will increase inductance, resulting diminished dynamic performance accuracy. Make sure that connections ground direct, impedance. LVCMOS Outputs Output traces connections must designed characteristic impedance. Keep trace lengths equal, minimize bends where possible. Avoid crossing ground power-plane breaks with signal traces. Unused Inputs inputs internally pulled left open-circuit used. CLKDIV internally pulled low, which divides input clock two. VREFSEL must held internal reference, left open external reference. Definitions Analog Input Bandwidth analog input frequency which spectral output power fundamental frequency determined analysis) reduced from full-scale low-frequency value. This also referred Full Power Bandwidth. Aperture Delay Sampling Delay time required after rise clock input sampling switch open, which time signal held conversion. Aperture Jitter variation aperture delay samples. Clock Duty Cycle ratio time clock wave logic high total time clock period. Differential Non-Linearity (DNL) deviation code width from ideal step. FN6814.0 December 2008 KAD2710C Package Outline Drawing L68.10x10B LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE 11/08 INDEX AREA 10.00 8.00 INDEX AREA 0.50 10.00 Exp. 7.70 0.15 (4X) VIEW 0.55 BOTTOM VIEW 0.25 0.10 0.90 8.00 DETAIL 0.10 0.50 SIDE VIEW 0.08 SEATING PLANE 0.25 9.65 7.70 MIN. MAX. 0.75 DETAIL TYPICAL RECOMMENDED LAND PATTERN NOTES: Dimensions millimeters. Dimensions Reference Only. Dimensioning tolerancing conform AMSEY14.5m-1994. Unless otherwise specified, tolerance Decimal 0.05 Dimension applies metallized terminal measured between 0.15mm 0.30mm from terminal tip. Tiebar shown present) non-functional feature. configuration identifier optional, must located within zone indicated. identifier either mold mark feature. 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