LT1990-10 250V Input Range, 100kHz, G =10, Micropower, Difference Amplifier FEATURES DESCRIPTION n Gain = 10 The LT 1990-10 is a micropower precision difference am- n 3dB Bandwidth = 100kHz plifier with a very high common mode input voltage range, n High Common Mode Voltage Range: a fixed gain of 10 and 100kHz bandwidth. The LT1990-10 n 250V (V = 15V) operates over a 250V common mode voltage range on a S n 85V Window (V = 5V, 0V) 15V supply. The inputs are fault protected from common S n Common Mode Rejection Ratio: 60dB Min mode voltage transients up to 350V and differential n Input Protection to 350V voltages up to 500V. The LT1990-10 is ideally suited for n Gain Error: 0.8% Max both high side and low side current or voltage monitoring. n PSRR: 82dB Min On a single 5V supply, the LT1990-10 has an adjustable n High Input Impedance: 2M Differential, 85V input range, 60dB min CMRR and draws less than 500k Common Mode 180A supply current. The rail-to-rail output maximizes n Micropower: 180A Max Supply Current the dynamic range, especially important for single sup- n Wide Supply Range: 2.7V to 36V plies as low as 2.7V. n Rail-to-Rail Output n The LT1990-10 is specified for single 3V, 5V and 15V 8-pin SO and pin FMEA Compatible MSOP Packages supplies over the industrial temperature range. APPLICATIONS The LT1990-10 is available in the 8-pin SO and pin FMEA n compatible MSOP packages. Battery Cell Voltage Monitoring n High Voltage Current Sensing All registered trademarks and trademarks are the property of their respective owners. n Signal Acquisition in Noisy Environments n Input Protection n Fault Protected Front Ends n Level Sensing n Isolation TYPICAL APPLICATION Full-Bridge Load Current Monitor +V SOURCE 5V LT1990-10 900k 10k 100k 1M R S V OUT + 1M + I V = 1.5V REF L 10k IN OUT 54.9k 1nF LT6650 40k 900k 100k 40k GND FB 20k 12V V 73V CM V = V (10 I R ) 199010 TA01 OUT REF L S 1F Rev 0 1 For more information www.analog.comLT1990-10 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) + Total Supply Voltage (V to V ).................................36V Operating Temperature Range (Note 4) Input Voltage Range LT1990I-10 ......................................... 55C to 125C Each Input Continuous ......................................250V Specified Temperature Range (Note 5) Each Input Transient (0.1s) ................................350V LT1990I-10 ...........................................40C to 85C Differential ........................................................500V Junction Temperature ........................................... 150C Output Short-Circuit Duration (Note 3) ............ Indefinite Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec.) ..................300C PIN CONFIGURATION TOP VIEW TOP VIEW REF 1 8 NC IN 1 8 REF + + IN 2 7 V NC 2 7 V NC 3 6 OUT +IN 3 6 OUT +IN 5 4 V V 4 5 NC MS8 PACKAGE 8-LEAD PLASTIC MSOP S8 PACKAGE 8-LEAD PLASTIC SO T = 150C, = 250C/W JMAX JA T = 150C, = 190C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT1990IS8-10 PBF LT1990IS8-10 TRPBF 199010 8-Lead Plastic SO 40C to 85C LT1990IMS8-10 PBF LT1990IMS8-10 TRPBF LTHBQ 8-Lead Plastic MSOP 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. For more information on tape and reel specifications, go to: Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev 0 2 For more information www.analog.com