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LT1780

Part Number LT1780
Manufacturer Linear Technology
Title Low Power 5V RS232 Dual Driver/Receiver with 15kV ESD Protection
Description LT1780/LT1781 Low Power 5V RS232 Dual Driver/Receiver with ±15kV ESD Protection DESCRIPTIO The LT®1780/LT1781 are dual RS232 driver/receiver pairs...
Features s s s s s s s s s s s s s 10mA Max Supply Current ESD Protection to IEC 1000-4-2 Level 4 ±15kV Air Gap, ±8kV Contact Uses Small Capacitors: 0.1µF 120kBaud Operation for RL = 3k, CL = 2500pF 250kBaud Operation for RL = 3k, CL = 1000pF Outputs Withstand ± 30V Without Damage CMOS Comparable Low Powe...

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LT1781 : LT1780/LT1781 Low Power 5V RS232 Dual Driver/Receiver with ±15kV ESD Protection DESCRIPTIO The LT®1780/LT1781 are dual RS232 driver/receiver pairs with integral charge pump to generate RS232 voltage levels from a single 5V supply. Using only 0.1µF external capacitors, these circuits consume only 40mW of power, and can operate to 120kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1780/LT1781 to survive ±15kV air gap and ±8kV contact ESD tests per IEC 1000-4-2, eliminating the need for costly TransZorbs® on the RS232 line pins. The LT1780/ LT1781 are fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shor.

LT1782 : LT1782 Micropower, Over-The-Top SOT-23, Rail-to-Rail Input and Output Op Amp FEATURES s s s s s s s s s s s s s s DESCRIPTIO Operates with Inputs Above V + Rail-to-Rail Input and Output Micropower: 55µA Supply Current Max Small SOT-23 Package Low Input Offset Voltage: 800µV Max Single Supply Input Range: 0V to 18V High Output Current: 18mA Min Specified on 3V, 5V and ± 5V Supplies Output Shutdown on 6-Lead Version Reverse Battery Protection to 18V High Voltage Gain: 1500V/mV Gain Bandwidth Product: 200kHz Slew Rate: 0.07V/µs Operating Temperature Range: –40°C to 85°C The LT®1782 is a 200kHz op amp available in the small SOT-23 package that operates on all single and split supplies with a .

LT1783 : LT1783 1.25MHz, Over-The-Top Micropower, Rail-to-Rail Input and Output Op Amp in SOT-23 FEATURES s s s s s s s s s s s s s s DESCRIPTIO Operates with Inputs Above V + Rail-to-Rail Input and Output Micropower: 300µA Supply Current Max Small SOT-23 Package Gain Bandwidth product: 1.25MHz Slew Rate: 0.42V/µs Low Input Offset Voltage: 800µV Max Single Supply Input Range: 0V to 18V High Output Current: 18mA Min Specified on 3V, 5V and ± 5V Supplies Output Shutdown on 6-Lead Version Reverse Battery Protection to 18V High Voltage Gain: 1500V/mV Operating Temperature Range: – 40°C to 85°C The LT®1783 is a 1.25MHz op amp available in the small SOT-23 package that operates on all single and split s.

LT1784 : www.DataSheet4U.com FEATURES s s s s s s s s s s s s s s LT1784 2.5MHz, Over-The-Top Low Power, Rail-to-Rail Input and Output Op Amp in SOT-23 DESCRIPTIO The LT®1784 is a 2.5MHz op amp available in the small SOT-23 package that operates on all single and split supplies with a total voltage of 2.5V to 18V. The amplifier draws less than 750µA of quiescent current and has reverse battery protection, drawing negligible current for reverse supply voltages up to 18V. The input range of the LT1784 includes ground, and a unique feature of this device is its Over-The-TopTM operation capabilitity with either or both of its inputs above the positive rail. The inputs handle 18V both differential and c.

LT1785 : LT1785/LT1785A LT1791/LT1791A 60V Fault Protected RS485/RS422 Transceivers FEATURES s s s s DESCRIPTIO s s s s s s U APPLICATIO S s s s Protected from Overvoltage Line Faults to ±60V Pin Compatible with LTC485 and LTC491 High Input Impedance Supports Up to 128 Nodes No Damage or Latchup to ESD IEC-1000-4-2 Level 4: ±15kV Air Discharge IEC-1000-4-2 Level 2: ± 4kV Contact Discharge Controlled Slew Rates for EMI Emissions Control Guaranteed High Receiver Output State for Floating, Shorted or Inactive Inputs Outputs Assume a High Impedance When Off or Powered Down Drives Low Cost, Low Impedance Cables Short-Circuit Protection on All Outputs Thermal Shutdown Protection The LT®1785/LT1791 a.

LT1785A : LT1785/LT1785A LT1791/LT1791A 60V Fault Protected RS485/RS422 Transceivers FEATURES s s s s DESCRIPTIO s s s s s s U APPLICATIO S s s s Protected from Overvoltage Line Faults to ±60V Pin Compatible with LTC485 and LTC491 High Input Impedance Supports Up to 128 Nodes No Damage or Latchup to ESD IEC-1000-4-2 Level 4: ±15kV Air Discharge IEC-1000-4-2 Level 2: ± 4kV Contact Discharge Controlled Slew Rates for EMI Emissions Control Guaranteed High Receiver Output State for Floating, Shorted or Inactive Inputs Outputs Assume a High Impedance When Off or Powered Down Drives Low Cost, Low Impedance Cables Short-Circuit Protection on All Outputs Thermal Shutdown Protection The LT®1785/LT1791 a.

LT1786F : The LT ®1786F is a fixed frequency, current mode, switching regulator that provides the control function for Cold Cathode Fluorescent Lighting (CCFL). The IC includes an efficient high current switch, an oscillator, output drive logic, control circuitry and a micropower 6-bit 100µA fullscale current output DAC. The DAC provides simple “bits- TYPICAL APPLICATION 90% Efficient Floating CCFL with 2-Wire SMBus Control of Lamp Current D1 BAT85 CCFL BACKLIGHT APPLICATION CIRCUITS CONTAINED IN THIS DATA SHEET ARE COVERED BY U.S. PATENT NUMBER 5408162 AND OTHER PATENTS PENDING 1 2 3 C7, 1µF 4 5 SHUTDOWN 6 7 8 CCFL PGND ICCFL DIO CCFL VSW BULB 16 15 R2 220k C5 1000pF 3 2 1 C3B 2.2µF 35V R1 750Ω 4 5 .

LT1787 : LT1787/LT1787HV Precision, High Side Current Sense Amplifiers FEATURES s s s s s s s s s DESCRIPTIO Input Offset Voltage: 75µV (Max) 60V Supply Operation (LT1787HV) 12-Bit Dynamic Range Operating Current: 60µA User-Selectable External Sense Resistor Bidirectional High Side Current Sensing Unidirectional or Bidirectional Output Input Noise Filtering Available in 8-Lead SO and MSOP Packages U APPLICATIO S s s s s s s Battery Monitoring Power Monitoring Portable Phones Cellular Phones Portable Test/Measurement Systems Battery-Operated Systems The LT ®1787 is a complete micropower precision high side current sense amplifier. The LT1787 monitors bidirectional currents via the voltage across.

LT1787HV : LT1787/LT1787HV Precision, High Side Current Sense Amplifiers FEATURES s s s s s s s s s DESCRIPTIO Input Offset Voltage: 75µV (Max) 60V Supply Operation (LT1787HV) 12-Bit Dynamic Range Operating Current: 60µA User-Selectable External Sense Resistor Bidirectional High Side Current Sensing Unidirectional or Bidirectional Output Input Noise Filtering Available in 8-Lead SO and MSOP Packages U APPLICATIO S s s s s s s Battery Monitoring Power Monitoring Portable Phones Cellular Phones Portable Test/Measurement Systems Battery-Operated Systems The LT ®1787 is a complete micropower precision high side current sense amplifier. The LT1787 monitors bidirectional currents via the voltage across.

LT1789-1 : LT1789-1/LT1789-10 Micropower, Single Supply Rail-to-Rail Output Instrumentation Amplifiers FEATURES s s s s DESCRIPTIO s s s s s s s s s U APPLICATIO S s s s s s s Micropower: 95µA Supply Current Max Low Input Offset Voltage: 100µV Max Low Input Offset Voltage Drift: 0.5µV/°C Max Single Gain Set Resistor: G = 1 to 1000 (LT1789-1) G = 10 to 1000 (LT1789-10) Inputs Common Mode to V – Wide Supply Range: 2.2V to 36V Total Supply CMRR at G = 10: 96dB Min Gain Error: G = 10, 0.25% Max Gain Nonlinearity: G = 10, 40ppm Max Input Bias Current: 40nA Max PSRR at G = 10: 100dB Min 1kHz Voltage Noise: 48nV/√Hz 0.1Hz to 10Hz Noise: 1.5µVP-P Portable Instrumentation Bridge Amplifiers Strain Gauge Am.

LT1789-10 : LT1789-1/LT1789-10 Micropower, Single Supply Rail-to-Rail Output Instrumentation Amplifiers FEATURES s s s s DESCRIPTIO s s s s s s s s s U APPLICATIO S s s s s s s Micropower: 95µA Supply Current Max Low Input Offset Voltage: 100µV Max Low Input Offset Voltage Drift: 0.5µV/°C Max Single Gain Set Resistor: G = 1 to 1000 (LT1789-1) G = 10 to 1000 (LT1789-10) Inputs Common Mode to V – Wide Supply Range: 2.2V to 36V Total Supply CMRR at G = 10: 96dB Min Gain Error: G = 10, 0.25% Max Gain Nonlinearity: G = 10, 40ppm Max Input Bias Current: 40nA Max PSRR at G = 10: 100dB Min 1kHz Voltage Noise: 48nV/√Hz 0.1Hz to 10Hz Noise: 1.5µVP-P Portable Instrumentation Bridge Amplifiers Strain Gauge Am.




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