Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    MAX4489 Search Results

    SF Impression Pixel

    MAX4489 Price and Stock

    Maxim Integrated Products MAX4489AUA+

    IC OPAMP GP 2 CIRCUIT 8UMAX
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX4489AUA+ Tube 2,935 1
    • 1 $3.56
    • 10 $3.197
    • 100 $2.6194
    • 1000 $1.88062
    • 10000 $1.71942
    Buy Now
    Newark MAX4489AUA+ Bulk 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    Maxim Integrated Products MAX4489AUA+T

    IC OPAMP GP 2 CIRCUIT 8UMAX
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX4489AUA+T Reel 2,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $1.64772
    Buy Now
    MAX4489AUA+T Cut Tape 2,185 1
    • 1 $3.53
    • 10 $3.169
    • 100 $2.5962
    • 1000 $1.86391
    • 10000 $1.86391
    Buy Now
    MAX4489AUA+T Digi-Reel 1
    • 1 $3.53
    • 10 $3.169
    • 100 $2.5962
    • 1000 $1.86391
    • 10000 $1.86391
    Buy Now
    Newark MAX4489AUA+T Cut Tape 1
    • 1 $3.5
    • 10 $2.91
    • 100 $2.57
    • 1000 $1.85
    • 10000 $1.85
    Buy Now
    Bristol Electronics MAX4489AUA+T 2,496
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Quest Components MAX4489AUA+T 1,996
    • 1 $4.0899
    • 10 $4.0899
    • 100 $4.0899
    • 1000 $2.045
    • 10000 $2.045
    Buy Now

    Rochester Electronics LLC MAX4489AUA

    IC OPAMP GP 2 CIRCUIT 8UMAX
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX4489AUA Tube 1,100 197
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.53
    • 10000 $1.53
    Buy Now

    Maxim Integrated Products MAX4489ASA+

    IC OPAMP GP 2 CIRCUIT 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX4489ASA+ Tube 12 1
    • 1 $3.56
    • 10 $3.197
    • 100 $2.6194
    • 1000 $1.88062
    • 10000 $1.71942
    Buy Now
    Newark MAX4489ASA+ Bulk 1
    • 1 $3.56
    • 10 $3.03
    • 100 $2.61
    • 1000 $2.22
    • 10000 $2.22
    Buy Now

    Maxim Integrated Products MAX4489AUA

    IC OPAMP GP 2 CIRCUIT 8UMAX
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX4489AUA Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Rochester Electronics MAX4489AUA 1,100 1
    • 1 $1.55
    • 10 $1.55
    • 100 $1.45
    • 1000 $1.32
    • 10000 $1.32
    Buy Now

    MAX4489 Datasheets (20)

    Part ECAD Model Manufacturer Description Curated Type PDF
    MAX4489 Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489 Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489ASA Maxim Integrated Products 42 MHz, Low-noise, low-distortion, SOT23, wide-band, rail to rail op amp. Original PDF
    MAX4489ASA Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489ASA+ Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489ASA Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8SOIC Original PDF
    MAX4489ASA+ Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8SOIC Original PDF
    MAX4489ASA+T Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489ASA-T Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489ASA+T Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8SOIC Original PDF
    MAX4489ASA-T Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8SOIC Original PDF
    MAX4489AUA Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489AUA Maxim Integrated Products 42 MHz, Low-noise, low-distortion, SOT23, wide-band, rail to rail op amp. Original PDF
    MAX4489AUA+ Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489AUA Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8UMAX Original PDF
    MAX4489AUA+ Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8UMAX Original PDF
    MAX4489AUA+T Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489AUA-T Maxim Integrated Products SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Original PDF
    MAX4489AUA+T Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8UMAX Original PDF
    MAX4489AUA-T Maxim Integrated Products Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps, Integrated Circuits (ICs), IC OPAMP GP 42MHZ RRO 8UMAX Original PDF

    MAX4489 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    MAX4476AUT-T

    Abstract: MAX4477 equivalent MAX4489ASA MAX4478AUD
    Text: MAX4475–MAX4478/MAX4488/MAX4489 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps General Description The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4489. MAX4476AUT-T MAX4477 equivalent MAX4489ASA MAX4478AUD

    MAX4489ASA

    Abstract: MAX4478AUD
    Text: 19-2137; Rev 2; 10/04 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 outputs14 MAX4489ASA MAX4478AUD

    MAX4489ASA

    Abstract: MAX4478AUD MAX4477
    Text: 19-2137; Rev 4; 12/09 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4478/MAX4488/MAX4489 MAX4489ASA MAX4478AUD MAX4477

    Untitled

    Abstract: No abstract text available
    Text: MAX4475–MAX4478/MAX4488/MAX4489 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps General Description The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation


    Original
    PDF MAX4475â MAX4478/MAX4488/MAX4489 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4489.

    MAX4476AUT-T

    Abstract: ultra low noise transistor MAX4475 MAX4475AUA MAX4475AUT MAX4478 MAX4488 MAX4478AUD MAX4476ATT
    Text: 19-2137; Rev 5; 7/10 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4478/MAX4488/MAX4489 MAX4476AUT-T ultra low noise transistor MAX4475AUA MAX4475AUT MAX4478 MAX4488 MAX4478AUD MAX4476ATT

    419c

    Abstract: No abstract text available
    Text: MAX4489 RELIABILITY REPORT FOR MAX4489AUA+ PLASTIC ENCAPSULATED DEVICES January 26, 2011 MAXIM INTEGRATED PRODUCTS 120 SAN GABRIEL DR. SUNNYVALE, CA 94086 Approved by Sokhom Chum Quality Assurance Reliability Engineer Maxim Integrated Products. All rights reserved.


    Original
    PDF MAX4489 MAX4489AUA+ /-2500V /-250mA. N290CA015B, N290CA035B, 419c

    MAX4489ASA

    Abstract: No abstract text available
    Text: 19-2137; Rev 3; 9/05 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4475AUT MAX4475AUT-T MAX4475ATT+ MAX4475ATT MAX4475AUA MAX4475AUA+ MAX4475AUA MAX4489ASA

    MAX4489ASA

    Abstract: MAX4478AUD MAX4475-MAX4478
    Text: 19-2137; Rev 3; 9/05 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4478/MAX4488/MAX4489 MAX4489ASA MAX4478AUD MAX4475-MAX4478

    Untitled

    Abstract: No abstract text available
    Text: MAX4475–MAX4478/MAX4488/MAX4489 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps General Description Features The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation


    Original
    PDF MAX4475â MAX4478/MAX4488/MAX4489 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4489.

    MAX4475

    Abstract: MAX4475AUA MAX4475AUT MAX4478 MAX4488 MAX4476AUT-T MAX4489ASA MAX4478AUD signal conditioning piezoelectric sensor
    Text: 19-2137; Rev 4; 12/09 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4478/MAX4488/MAX4489 MAX4475AUA MAX4475AUT MAX4478 MAX4488 MAX4476AUT-T MAX4489ASA MAX4478AUD signal conditioning piezoelectric sensor

    MAX4477 equivalent

    Abstract: "low noise Microphone Preamplifiers" MAX4475AUT-T SOT23-6 MAX4475 MAX4477 IC OP AMP for piezoelectric microphone IC OP AMP for Piezoelectric transducers making 2a sot23 MAX4478AUD MAX4475ASA
    Text: 19-2137; Rev 0; 8/01 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer Rail-to-Rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4478/MAX4488/MAX4489 MAX4477 equivalent "low noise Microphone Preamplifiers" MAX4475AUT-T SOT23-6 MAX4477 IC OP AMP for piezoelectric microphone IC OP AMP for Piezoelectric transducers making 2a sot23 MAX4478AUD MAX4475ASA

    MAX4475

    Abstract: MAX4475ASA MAX4475AUA MAX4475AUT-T MAX4478 MAX4477ASA MAX4489ASA MAX4478AUD
    Text: 19-2137; Rev 0; 8/01 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer Rail-to-Rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply


    Original
    PDF MAX4475 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4478/MAX4488/MAX4489 MAX4475ASA MAX4475AUA MAX4475AUT-T MAX4478 MAX4477ASA MAX4489ASA MAX4478AUD

    Untitled

    Abstract: No abstract text available
    Text: MAX4475MAX4478/ MAX4488/MAX4489 LE AVAILAB SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps General Description The MAX4475–MAX4478/MAX4488/MAX4489 wideband, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation


    Original
    PDF MAX4475â MAX4478/ MAX4488/MAX4489 MAX4478/MAX4488/MAX4489 MAX4475/MAX4488 MAX4475

    LD1117-3.3V

    Abstract: 7101 ST 78m05 ld1117-3 AN2010 MAX6129 st 7101 transistor P43 smd PSD834 90C7101
    Text: AN2010 APPLICATION NOTE Interference Control during Mixed-Signal Analog and Digital Board Design In a mixed-signal circuit, using both analog and digital components, the fast speed digital circuit section is always a potential source of noise, especially for the sensitive analog circuit section. The typical CMOS


    Original
    PDF AN2010 90C7101 LD1117-3.3V 7101 ST 78m05 ld1117-3 AN2010 MAX6129 st 7101 transistor P43 smd PSD834

    MAX4389

    Abstract: MAX4380 MAX7428 MAX1135 MAX11504 MAX11506 MAX1190 MAX1193 MAX1196 MAX1198
    Text: Maxim > Design support > App notes > Amplifier and Comparator Circuits > APP 4294 Maxim > Design support > App notes > Automatic Test Equipment ATE > APP 4294 Maxim > Design support > App notes > Automotive > APP 4294 Keywords: DG, DP, differential gain phase, video error, NTSC, TV, invisible amplifier, PAL, subcarrier, ADC, DAC, sweet-spot, linear,


    Original
    PDF com/an4294 AN4294, APP4294, Appnote4294, MAX4389 MAX4380 MAX7428 MAX1135 MAX11504 MAX11506 MAX1190 MAX1193 MAX1196 MAX1198

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original
    PDF P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS

    max9939

    Abstract: smartphone proximity sensor MAX4073 cross reference max9929 MAX9930 MAX9931 6-SOT23 MAX4231 MAX4236 MAX4238
    Text: A mplifiers and Sensors 1st Edition April 2009 Amplifier solutions tailored for today’s applications Tiny, low-power smartphone solutions pages 2, 3 High-performance notebook solutions pages 4, 5 Efficient communications solutions pages 6, 7 Four-bump innovations page 8


    Original
    PDF

    MAX6006

    Abstract: MAX5413 MAX6043_10 362 SOT23-6 DS1845 MAX5406 MAX5408 MAX5434 MAX5440 MAX5451
    Text: SIGNAL CHAIN 2008年9月 第一版 为您的信号链路设计提供高性能的 模拟方案 Maxim 提供广泛的高性能 ADCDAC、电压基准、运算放大器和数字电位器。我们推出的业界领先产品完全满足 医疗、工业、通信、仪表及汽车电子产品中客户对于精确度、准确度和小尺寸的需求。


    Original
    PDF 2500kHz SC70/SOT23/ SC70/SOT23 MAX5490 MAX5491/92 DS4303 DS4305 5-SOT23 MAX6006 MAX5413 MAX6043_10 362 SOT23-6 DS1845 MAX5406 MAX5408 MAX5434 MAX5440 MAX5451

    aazv

    Abstract: MAX4475ASA MAX4475 MAX4475AUA MAX4475AUT-T MAX4478 MAX4489ASA MAX4478AUD
    Text: 19-2137; Rev 1; 10/02 SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps Applications ADC Buffers DAC Output Amplifiers Low-Noise Microphone/Preamplifiers Digital Scales Strain Gauges/Sensor Amplifiers Medical Instrumentation Typical Operating Characteristic


    Original
    PDF 120dB MAX4475AUT-T OT23-6 MAX4475AUA MAX4475ASA MAX4476AUT-T C-0041 MAX4475 MAX4478/MAX4488/MAX4489 aazv MAX4475ASA MAX4475AUA MAX4475AUT-T MAX4478 MAX4489ASA MAX4478AUD

    max14574

    Abstract: MAX1786 MAX1788 MAX8899 DS1849 MAX16908 MAX4967 DS3610 max17018 max13487
    Text: Monitor Reports by Product: 1. Find the product of interest in the table below. Note the process and/or package for that product. 2. Use the "Back" button to return to the home page. 3. Select the process in the "Process Reliability" for the product of interest.


    Original
    PDF

    LM7905 voltage regulator packages

    Abstract: MAX1673 MAX1678 MAX4474 MAX5408 LMX331 MAX1122 MAX1589 MAX1687 MAX4695
    Text: Maxim > App Notes > A/D and D/A CONVERSION/SAMPLING CIRCUITS AMPLIFIER AND COMPARATOR CIRCUITS BATTERY MANAGEMENT DIGITAL POTENTIOMETERS POWER-SUPPLY CIRCUITS VOLTAGE REFERENCES Keywords: Low voltage Mar 23, 2006 APPLICATION NOTE 3741 Analog ICs for Low Voltage Systems


    Original
    PDF RS-232 com/an3741 AN3741, APP3741, Appnote3741, LM7905 voltage regulator packages MAX1673 MAX1678 MAX4474 MAX5408 LMX331 MAX1122 MAX1589 MAX1687 MAX4695

    MAX4475-MAX4478

    Abstract: No abstract text available
    Text: MAX4475 RELIABILITY REPORT FOR MAX4475ATT+T PLASTIC ENCAPSULATED DEVICES March 24, 2011 MAXIM INTEGRATED PRODUCTS 120 SAN GABRIEL DR. SUNNYVALE, CA 94086 Approved by Sokhom Chum Quality Assurance Reliability Engineer Maxim Integrated Products. All rights reserved.


    Original
    PDF MAX4475 MAX4475ATT /-2500V JESD22-A114. /-100mA JESD78. MAX4475-MAX4478

    MAX9600

    Abstract: MAX4036-39 MAX4070 MAX4172 MAX4230 MAX4400 MAX4480 10-UCSP 8-SOT23
    Text: AMPLIFIERS/COMPARATORS SELECTOR GUIDE Analog Solutions for Analog Problems I LOAD VOUT General-Purpose Op Amps* Part No. of Rail-toAmps per Rail Package LMX321/58/24 1, 2, 4 MAX4230–34 1, 2, 4 MAX4245/46/47 1, 2 Output Output, input MAX4291/92/94 MAX4400–03


    Original
    PDF MAX4230 MAX4291/92/94 MAX4400 MAX4480 SC70/SOT23/ SC70/SOT23 5-SOT23, MAX9017/19 8-SOT23 MAX9600 MAX4036-39 MAX4070 MAX4172 10-UCSP 8-SOT23

    PIC16F72 inverter ups

    Abstract: UPS inverter PIC16F72 PIC16F676 inverter hex code 16F877 with sd-card and lcd project circuit diagram wireless spy camera NH82801GB xmega-a4 online ups service manual back-ups ES 500 ARM LPC2148 INTERFACING WITH RFID circuit diagram realtek rtd 1186
    Text: the solutions are out there you just haven’t registered yet. RoadTest the newest products in the market! View the latest news, design support and hot new technologies for a range of applications Join the RoadTest group and be in with a chance to trial exclusive new products for free. Plus, read


    Original
    PDF element-14 element14. element14, PIC16F72 inverter ups UPS inverter PIC16F72 PIC16F676 inverter hex code 16F877 with sd-card and lcd project circuit diagram wireless spy camera NH82801GB xmega-a4 online ups service manual back-ups ES 500 ARM LPC2148 INTERFACING WITH RFID circuit diagram realtek rtd 1186