LT1637 1.1MHz, 0.4V/s Over-The-Top Micropower, Rail-To-Rail Input and Output Op Amp FEATURES DESCRIPTIO + Operates with Inputs Above V The LT 1637 is a rugged op amp that operates on all single Rail-to-Rail Input and Output and split supplies with a total voltage of 2.7V to 44V. The Micropower: 250A Supply Current Max LT1637 has a gain-bandwidth product of 1.1MHz while Operating Temperature Range: 55C to 125C drawing less than 250A of quiescent current. The LT1637 Gain-Bandwidth Product: 1.1MHz can be shut down, making the output high impedance and Slew Rate: 0.4V/s reducing the quiescent current to only 3A. The LT1637 is Low Input Offset Voltage: 350V Max reverse supply protected: it draws virtually no current for re- Single Supply Input Range: 0.4V to 44V verse supply up to 25V. The input range of the LT1637 in- High Output Current: 25mA Min cludes both supplies and the output swings to both supplies. Specified on 3V, 5V and 15V Supplies Unlike most micropower op amps, the LT1637 can drive Output Shutdown heavy loads its rail-to-rail output drives 25mA. The LT1637 Output Drives 4700pF with Output Compensation is unity-gain stable into all capacitive loads up to 4700pF Reverse Battery Protection to 25V when optional 0.22F and 150 compensation is used. High Voltage Gain: 800V/mV The LT1637 has a unique input stage that operates and High CMRR: 110dB remains high impedance when above the positive supply. Available in 8-Lead MSOP, PDIP and SO Packages The inputs take 44V both differential and common mode, and a Tiny (3mm 3mm 0.8mm) DFN Package even when operating on a 3V supply. Built-in resistors U protect the inputs for faults below the negative supply up APPLICATIO S to 22V. There is no phase reversal of the output for inputs Battery or Solar Powered Systems: 5V below V or 44V above V , independent of V . EE EE CC Portable Instrumentation The LT1637 op amp is available in the 8-pin MSOP, PDIP Sensor Conditioning and SO packages. For space limited applications, the Supply Current Sensing LT1637 is available in a 3mm 3mm 0.8mm dual fine Battery Monitoring pitch leadless package (DFN). MUX Amplifiers , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. 4mA to 25mA Transmitters Over-The-Top is a registered trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIO Over-The-Top Current Source with Shutdown Current Source Timing Switchable Precision Current Source 6V 4V TO 44V 4V + V SHDN 4.7F LT1004-1.2 2V 2k R 0V R* + LT1637 TP0610 10mA 1.2 I = I 5mA OUT OUT R I e.g., 10mA = 120 OUT 0mA SHDN *OPTIONAL FOR LOW OUTPUT CURRENTS, 1637 TA01 1637 TA01b R* = R 100s/DIV 1637fd 1 U ULT1637 ABSOLUTE AXI U RATI GS (Note 1) + Total Supply Voltage (V to V ) .............................. 44V Specified Temperature Range (Note 4) Input Differential Voltage ......................................... 44V LT1637C/LT1637I .............................. 40C to 85C Input Current ...................................................... 25mA LT1637H .......................................... 40C to 125C Shutdown Pin Voltage Above V ..................................... 32V LT1637MP......................................... 55C to 125C Shutdown Pin Current ........................................ 10mA Junction Temperature........................................... 150C Output Short-Circuit Duration (Note 2) .........Continuous Junction Temperature (DD Package) ................... 125C Operating Temperature Range (Note 3) Storage Temperature Range ................. 65C to 150C LT1637C/LT1637I .............................. 40C to 85C Storage Temperature Range LT1637H .......................................... 40C to 125C (DD Package) ....................................... 65C to 125C LT1637MP......................................... 55C to 125C Lead Temperature (Soldering, 10 sec).................. 300C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW TOP VIEW NULL 1 8 NULL NULL 1 8 NULL NULL 1 8 NULL + + IN A 2 7 V IN 2 7 V + IN 2 7 V +IN A 3 6 OUT +IN 3 6 OUT +IN 3 6 OUT V 4 5 SHDN V SHDN 4 5 V SHDN 4 5 MS8 PACKAGE 8-LEAD PLASTIC MSOP N8 PACKAGE S8 PACKAGE DD PACKAGE T = 150C, = 250C/W 8-LEAD PDIP 8-LEAD PLASTIC SO JMAX JA 8-LEAD (3mm 3mm) PLASTIC DFN T = 150C, = 150C/W (N8) JMAX JA T = 125C, = 160C/W (NOTE 2) JMAX JA T = 150C, = 190C/W (S8) JMAX JA UNDERSIDE METAL CONNECTED TO V ORDER PART ORDER PART MS8 PART* ORDER PART S8 PART DD PART* NUMBER NUMBER MARKING NUMBER MARKING MARKING LT1637CDD LAAK LT1637CMS8 LTIE LT1637CN8 1637 LT1637IDD LAAK LT1637IMS8 LTIE LT1637CS8 1637I LT1637IN8 1637H LT1637IS8 1637MP LT1637HS8 LT1637MPS8 *The temperature grades are identified by a label on the shipping container. Consult factory for parts specified with wider operating temperature ranges. U 3V A D 5V ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range of 40C T 85C, otherwise A specifications are at T = 25C. V = 3V, 0V V = 5V, 0V V = V ,V = V = half supply unless otherwise specified. (Note 4) A S S SHDN CM OUT LT1637C/LT1637I SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input Offset Voltage N8, S8 Packages 100 350 V OS 0C T 70C 550 V A 40C T 85C 700 V A MS8 Package 100 350 V 0C T 70C 750 V A 40C T 85C 1100 V A DD Package 125 550 V 0C T 70C 950 V A 40C T 85C 1100 V A 1637fd 2 U WWW