Datasheet LT1784 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 2.5MHz, Over-The-Top Low Power, Rail-to-Rail Input and Output Op Amp in SOT-23 |
| Pages / Page | 12 / 1 — FEATURES. DESCRIPTION. Operates with Inputs Above V+. Rail-to-Rail Input … |
| File Format / Size | PDF / 204 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. Operates with Inputs Above V+. Rail-to-Rail Input and Output. APPLICATIONS. TYPICAL APPLICATION
Model Line for this Datasheet
Text Version of Document
LT1784 2.5MHz, Over-The-Top Low Power, Rail-to-Rail Input and Output Op Amp in SOT-23
FEATURES DESCRIPTION
n
Operates with Inputs Above V+
The LT®1784 is a 2.5MHz op amp available in the small n
Rail-to-Rail Input and Output
SOT-23 package that operates on all single and split supplies n Gain Bandwidth Product: 2.5MHz with a total voltage of 2.5V to 18V. The amplifi er draws less n Slew Rate: 2.1V/μs than 750μA of quiescent current and has reverse battery n Low Input Offset Voltage: 3.5mV Max protection, drawing negligible current for reverse supply n High Voltage Gain: 1000V/mV voltages up to 18V. n Single Supply Input Range: 0V to 18V The input range of the LT1784 includes ground, and a n Specifi ed on 3V, 5V and ±5V Supplies unique feature of this device is its Over-The-Top® opera- n Reverse Battery Protection to 18V tion capabilitity with either or both of its inputs above the n Low Power: 750μA Supply Current Max positive rail. The inputs handle 18V both differential and n Output Shutdown on 6-Lead Version common mode, independent of supply voltage. The input n High Output Current: 15mA Min stage incorporates phase reversal protection to prevent n Operating Temperature Range: –40°C to 85°C false outputs from occurring even when the inputs are 9V n Low Profi le (1mm) ThinSOT™ Package below the negative supply. The LT1784 can drive loads up to 15mA and still maintain
APPLICATIONS
rail-to-rail capability. A shutdown feature on the 6-lead n Portable Instrumentation version can disable the part, making the output high n Battery-Powered Systems impedance and reducing quiescent current to 5μA. The n Sensor Conditioning LT1784 op amp is available in the 5- and 6-lead SOT-23 n Supply Current Sensing packages. For applications requiring lower power, refer to n MUX Amplifi ers the LT1782 and LT1783 data sheets. n 4mA to 20mA Transmitters L, LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Programmable Gain, AV = 2, AV = 20, 100kHz Amplifi er Programmable Gain Amplifi er
VCC
Frequency Response
A A 30 V = 20 V = 2 25 AV = 20 SHDN VCC 20 15 IN + 10 LT1784 OUT SHDN VCC 5 – AV = 2 GAIN (dB) 0 + VEE –5 LT1782 –10 – R1 + R2 –15 AV = 1+( R3 ) VEE –20 1k 10k 100k 1M 10M R1 R2 R1 OR 1+( FREQUENCY (Hz) R2 + R3 ) 9.09k 10k 1784 TA01b R3 1k 1784 TA01a 1784fa 1
FEATURES DESCRIPTION
n
Operates with Inputs Above V+
The LT®1784 is a 2.5MHz op amp available in the small n
Rail-to-Rail Input and Output
SOT-23 package that operates on all single and split supplies n Gain Bandwidth Product: 2.5MHz with a total voltage of 2.5V to 18V. The amplifi er draws less n Slew Rate: 2.1V/μs than 750μA of quiescent current and has reverse battery n Low Input Offset Voltage: 3.5mV Max protection, drawing negligible current for reverse supply n High Voltage Gain: 1000V/mV voltages up to 18V. n Single Supply Input Range: 0V to 18V The input range of the LT1784 includes ground, and a n Specifi ed on 3V, 5V and ±5V Supplies unique feature of this device is its Over-The-Top® opera- n Reverse Battery Protection to 18V tion capabilitity with either or both of its inputs above the n Low Power: 750μA Supply Current Max positive rail. The inputs handle 18V both differential and n Output Shutdown on 6-Lead Version common mode, independent of supply voltage. The input n High Output Current: 15mA Min stage incorporates phase reversal protection to prevent n Operating Temperature Range: –40°C to 85°C false outputs from occurring even when the inputs are 9V n Low Profi le (1mm) ThinSOT™ Package below the negative supply. The LT1784 can drive loads up to 15mA and still maintain
APPLICATIONS
rail-to-rail capability. A shutdown feature on the 6-lead n Portable Instrumentation version can disable the part, making the output high n Battery-Powered Systems impedance and reducing quiescent current to 5μA. The n Sensor Conditioning LT1784 op amp is available in the 5- and 6-lead SOT-23 n Supply Current Sensing packages. For applications requiring lower power, refer to n MUX Amplifi ers the LT1782 and LT1783 data sheets. n 4mA to 20mA Transmitters L, LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Programmable Gain, AV = 2, AV = 20, 100kHz Amplifi er Programmable Gain Amplifi er
VCC
Frequency Response
A A 30 V = 20 V = 2 25 AV = 20 SHDN VCC 20 15 IN + 10 LT1784 OUT SHDN VCC 5 – AV = 2 GAIN (dB) 0 + VEE –5 LT1782 –10 – R1 + R2 –15 AV = 1+( R3 ) VEE –20 1k 10k 100k 1M 10M R1 R2 R1 OR 1+( FREQUENCY (Hz) R2 + R3 ) 9.09k 10k 1784 TA01b R3 1k 1784 TA01a 1784fa 1
