LT1784 2.5MHz, Over-The-Top Power, Rail-to-Rail Input Output SOT-23 DE

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LT1784 2.5MHz, Over-The-Top Power, Rail-to-Rail Input Output SOT-23 DE

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LT1784 2.5MHz, Over-The-Top Power, Rail-to-Rail Input Output SOT-23 DESCRIPTIO
LT®1784 2.5MHz available small SOT-23 package that operates single split supplies with total voltage 2.5V 18V. amplifier draws less than 750µA quiescent current reverse battery protection, drawing negligible current reverse supply voltages 18V. input range LT1784 includes ground, unique feature this device Over-The-Topoperation capabilitity with either both inputs above positive rail. inputs handle both differential common mode, independent supply voltage. input stage incorporates phase reversal protection prevent false outputs from occurring even when inputs below negative supply. LT1784 drive loads 15mA still maintain rail-to-rail capability. shutdown feature 6-lead version disable part, making output high impedance reducing quiescent current 5µA. LT1784 available 6-lead SOT-23 packages. applications requiring lower power, refer LT1782 LT1783 data sheets.
registered trademarks Linear Technology Corporation. Over-The-Top ThinSOT trademarks Linear Technology Corporation.
Operates with Inputs Above Rail-to-Rail Input Output Profile (1mm) ThinSOTPackage Gain Bandwidth Product: 2.5MHz Slew Rate: 2.1V/µs Input Offset Voltage: 3.5mV High Voltage Gain: 1000V/mV Single Supply Input Range: Specified Supplies Reverse Battery Protection Power: 750µA Supply Current Output Shutdown 6-Lead Version High Output Current: 15mA Operating Temperature Range: 40°C 85°C
APPLICATIO
Portable Instrumentation Battery-Powered Systems Sensor Conditioning Supply Current Sensing Amplifiers 20mA Transmitters
TYPICAL APPLICATIO
SHDN SHDN
Programmable Gain, 100kHz Amplifier
Programmable Gain Amplifier Frequency Response
LT1784
GAIN (dB)
LT1782
9.09k
1784 TA01
100k FREQUENCY (Hz)
1784 TA01a
LT1784
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage Input Differential Voltage Input Voltage 24V/- Shutdown Voltage Above Shutdown Current ±10mA Output Short-Circuit Duration (Note Indefinite
PACKAGE/ORDER INFORMATION
VIEW
ORDER PART NUMBER
LT1784CS5 LT1784IS5 PART MARKING LTJD LTSN
PACKAGE 5-LEAD PLASTIC SOT-23
TJMAX 150°C, 250°C/
Consult marketing parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. VOUT half supply, 6-lead part VPIN5 pulse power tested unless otherwise specified.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS 25°C 70°C 40°C 85°C 40°C 85°C (Note Input Bias Current (Note SHDN IB/T Input Bias Current Drift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance 40°C 85°C 0.1Hz 10Hz 10kHz 10kHz Differential Common Mode, (VCC 1.2V) Common Mode,
VOS/T Input Offset Voltage Drift (Note Input Offset Current
Input Capacitance Input Voltage Range
(Note
Operating Temperature Range (Note 40°C 85°C Specified Temperature Range (Note 40°C 85°C Junction Temperature. 150°C Storage Temperature Range 65°C 150°C Lead Temperature (Soldering, sec). 300°C
VIEW
ORDER PART NUMBER
SHDN
LT1784CS6 LT1784IS6 PART MARKING LTIW LTIX
PACKAGE 6-LEAD PLASTIC SOT-23
TJMAX 150°C, 230°C/
UNITS µV/°C nA/°C µVP-P nV/Hz pA/Hz
LT1784
ELECTRICAL CHARACTERISTICS
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. VOUT half supply, 6-lead part VPIN5 pulse power tested unless otherwise specified.
SYMBOL PARAMETER CMRR PSRR AVOL Common Mode Rejection Ratio (Note Power Supply Rejection Ratio Large-Signal Voltage Gain CONDITIONS 1.2V (Note 12.5V, 500mV 2.5V, 70°C 40°C 85°C 500mV 4.5V, 70°C 40°C 85°C Output Voltage Swing Load ISINK ISINK 10mA Load ISOURCE Load ISOURCE 10mA Short-Circuit Current (Note Short Short Short Short Minimum Supply Voltage Reverse Supply Voltage Supply Current (Note Supply Current, Shutdown ISHDN SHDN Current VPIN5 Load (Note VPIN5 0.3V (On), load (Note VPIN5 (Shutdown), Load (Note VPIN5 (Shutdown), Load (Note VPIN5 Load (Note VPIN5 18V, Load (Note (Note (Note VPIN5 (Note VPIN5 (Note 5kHz 70°C 40°C 85°C 70°C 40°C 85°C VOUT 2VP-P VOUT 0.1%, 1.8VP-P, 10k, 1kHz
1000
UNITS V/mV V/mV V/mV V/mV V/mV V/mV
1000
2.885 2.600 4.885 4.400 12.5 20.0 2.93 4.93
Output Voltage Swing HIGH
V/µs V/µs V/µs
-100µA
0.05
Output Leakage Current, Shutdown Maximum SHDN Current tOFF SHDN Input Voltage SHDN Input High Voltage Turn-On Time Turn-Off Time Gain Bandwidth Product (Note Slew Rate (Note Full-Power Bandwidth (Note Settling Time Distortion
FPBW
0.001
LT1784
ELECTRICAL CHARACTERISTICS
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. ±5V, 0V,VOUT 6-lead part VPIN5 pulse power tested unless otherwise specified.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS 25°C 70°C 40°C 85°C -40°C 85°C
3.75 4.50 4.80
UNITS µV/°C nA/°C µVP-P nV/Hz pA/Hz
VOS/T Input Offset Voltage Drift (Note IB/T CMRR AVOL Input Offset Current Input Bias Current Input Bias Current Drift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance Input Voltage Range Common Mode Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing
70°C 0.1Hz 10Hz 1kHz 1kHz Differential Common Mode,
4.996 4.800 4.650 4.99 4.60 4.40
V/mV V/mV
±4V, 70°C Load ISINK ISINK 10mA Load ISOURCE ISOURCE 10mA Short 70°C ±1.5V
Output Voltage Swing HIGH
4.885 4.550 4.400
4.92 4.75 4.65
PSRR
Short-Circuit Current (Note Power Supply Rejection Ratio Supply Current Supply Current, Shutdown
VPIN5 -3V, ±5V, Load (Note VPIN5 -4.7V (On), ±5V, load (Note VPIN5 (Shutdown), ±5V, Load (Note VPIN5 (Note VPIN5 -7V, ±9V, Load (Note (Note (Note VPIN5 -5V, (Note VPIN5 (Note 5kHz 70°C -40°C 85°C
0.05 1.55 1.30 1.20
ISHDN
SHDN Current Maximum SHDN Current Output Leakage Current, Shutdown
tOFF
SHDN Input Voltage SHDN Input High Voltage Turn-On Time Turn-Off Time Gain Bandwidth Product
LT1784
ELECTRICAL CHARACTERISTICS
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. ±5V, 0V,VOUT 6-lead part VPIN5 pulse power tested unless otherwise specified.
SYMBOL PARAMETER Slew Rate CONDITIONS ±4V, Measured 70°C -40°C 85°C VOUT 8VP-P VOUT 0.1%,
UNITS V/µs V/µs V/µs
FPBW
Full-Power Bandwidth (Note Settling Time
Note Absolute Maximum Ratings those values beyond which life device impaired. Note heat sink required keep junction temperature below absolute maximum. Note limits guaranteed correlation tests. Note limits guaranteed correlation tests. Note Guaranteed correlation slew rate ±5V, tests.
Note This specification implies typical input offset voltage 5.7mV maximum input offset voltage 18mV 18V. Note This parameter 100% tested. Note Specifications apply 6-lead SOT-23 with shutdown. Note Full-power bandwidth calculated from slew rate. FPBW SR/2VP. Note LT1784C guaranteed functional over operating temperature range 40°C 85°C. Note LT1784C guaranteed meet specified performance from 70°C. LT1784C designed, characterized expected meet specified performance from 40°C 85°C tested sampled these temperatures. LT1784I guaranteed meet specified performance from 40°C 85°C.
TYPICAL PERFOR CHARACTERISTICS
Supply Current Supply Voltage
SUPPLY CURRENT (µA) INPUT OFFSET VOLTAGE CHANGE (µV)
125°C 25°C
-100 -200 -300 -400
125°C
-55°C
25°C
VOUT
SUPPLY VOLTAGE
1784
Minimum Supply Voltage
-55°C
Output Voltage Large Input Voltage
TOTAL SUPPLY VOLTAGE
1784
1784
LT1784 TYPICAL PERFOR CHARACTERISTICS
Input Bias Current Common Mode Voltage
300,000 250,000 200,000
OUTPUT SATURATION VOLTAGE
150,000 100,000 25°C -200 -400 COMMON MODE VOLTAGE
1784
OUTPUT SATURATION VOLTAGE
INPUT BIAS CURRENT (nA)
-55°C 125°C
Output Saturation Voltage Input Overdrive
OUTPUT SATURATION VOLTAGE (mV)
OUTPUT HIGH
OUTPUT CURRENT (mA)
SINKING
OUTPUT
±2.5V LOAD INPUT OVERDRIVE (mV)
1784
SOURCING TEMPERATURE (°C)
NOISE VOLTAGE (400nV/DIV)
Noise Voltage Density Frequency
INPUT NOISE VOLTAGE DENSITY (nV/Hz) FREQUENCY (Hz) 100k
1784
INPUT NOISE CURRENT DENSITY (pA/Hz)
±2.5V
GAIN (dB)
Output Saturation Voltage Load Current (Output High)
±2.5V 30mV
Output Saturation Voltage Load Current (Output Low)
±2.5V 30mV
25°C 0.01
125°C
125°C 25°C -55°C
-55°C 0.001 1000 SINKING LOAD CURRENT (µA) 10000
1784
0.01 1000 SOURCING LOAD CURRENT (µA) 10000
1784
Output Short-Circuit Current Temperature
0.1Hz 10Hz Noise Voltage
±2.5V
TIME (sec)
DC194
1784
Input Noise Current Frequency
FREQUENCY (Hz) 100k
1784
Gain Phase Shift Frequency
100k FREQUENCY (Hz) GAIN ±2.5V PHASE
PHASE (DEG)
±2.5V
1784
LT1784 TYPICAL PERFOR CHARACTERISTICS
Gain Bandwidth Product Temperature
GAIN BANDWIDTH PRODUCT (MHz)
RISING
GAIN BANDWIDTH PRODUCT (MHz)
±2.5V 5kHz
SLEW RATE (V/µs)
TEMPERATURE (°C)
Gain Bandwidth Phase Margin Load Resistance
POWER SUPPLY REJECTION RATIO (dB)
COMMON MODE REJECTION RATIO (dB)
GAIN BANDWIDTHPRODUCT (MHz)
PHASE MARGIN
GAIN BANDWIDTH PRODUCT
±2.5V 5kHz LOAD RESISTANCE 100k
1784
Output Impedance Frequency
±2.5V
OUTPUT IMPEDANCE
OUTPUT STEP
OUTPUT IMPEDANCE
0.01
100k FREQUENCY (Hz)
1784
1784
Slew Rate Temperature
Gain Bandwidth Product Phase Margin Supply Voltage
5kHz PHASE MARGIN
PHASE MARGIN (DEG)
FALLING
TOTAL SUPPLY VOLTAGE GAIN BANDWIDTH PRODUCT
TEMPERATURE (°C)
1784
1784
PSRR Frequency
PHASE MARGIN (DEG) 100k FREQUENCY (Hz)
1784
CMRR Frequency
100k FREQUENCY (Hz)
1784
±2.5V
±2.5V
POSITIVE SUPPLY
NEGATIVE SUPPLY
Disabled Output Impedance Frequency
±2.5V VPIN 2.5V
Settling Time 0.1% Output Step
100k
100k FREQUENCY (Hz)
1784
SETTLING TIME (µs)
1784
LT1784 TYPICAL PERFOR CHARACTERISTICS
Capacitive Load Handling Overshoot Capacitive Load
2.5V
OUTPUT SWING (VP-P)
OVERSHOOT
CAPACITIVE LOAD (pF)
±2.5V
NOISE
Total Harmonic Distortion Noise Load Resistance
±1.5V TOTAL 2VP-P 1kHz NOISE
FREQUENCY 1kHz HALF SUPPLY
INPUT OFFSET VOLTAGE CHANGE (50µV/DIV)
NOISE
0.01 0.1V 2.1V
0.001
0.0001
LOAD RESISTANCE GROUND
1784
Supply Current SHDN Voltage
125°C 25°C -55°C
SUPPLY CURRENT (µA)
SHUTDOWN VOLTAGE
1784
Undistorted Output Swing Frequency
DISTORTION
Total Harmonic Distortion Noise Frequency
VOUT 1.8VP-P
0.01
0.001
1000
1784
100k FREQUENCY (Hz)
1784
0.0001
FREQUENCY (Hz)
100k
1784
Total Harmonic Distortion Noise Output Voltage Amplitude
Open-Loop Gain
±1.5V ±1.5V
0.01
0.001
100k
OUTPUT VOLTAGE AMPLITUDE (VP-P)
OUTPUT VOLTAGE
1784
1784
Large Signal Response
Small Signal Response
2V/DIV
20mV/DIV
15pF
5µs/DIV
15pF
2µs/DIV
LT1784
APPLICATIO ATIO
Supply Voltage
positive supply LT1784 should bypassed with small capacitor (typically 0.1µF) within inch pin. When driving heavy loads, additional 4.7µF electrolytic capacitor should used. When using split supplies same true negative supply pin. LT1784 protected against reverse battery voltages 18V. event reverse battery condition occurs supply current less than 1nA. Inputs LT1784 input stages, (see Simplified Schematic), resulting three distinct operating regions shown "Input Bias Current Common Mode" Typical Performance Characteristic Curve. input voltages about more below input stage active input bias current typically -250nA. When input common mode voltage within 0.6V positive rail, stage operating input bias current typically 500nA. Increases temperature will cause voltage which operation switches from input stage input stage move towards input offset voltage stage untrimmed typically 3mV. Schottky diode collector input transistors, along with special geometries these transistors, allow LT1784 operate with either both inputs above about 0.3V above input transistors fully saturated input bias current typically 200µA room temperature. input offset voltage typically when operating above LT1784 will operate with inputs above regardless inputs protected against excursions much below internal resistor series with each input diode from input negative supply. input stage LT1784 incorporates phase reversal protection prevent output from phase reversing inputs below There clamping diodes between inputs maximum differential input voltage 18V.
Output output LT1784 swing within 80mV positive rail within negative rail with load. When monitoring input voltages within 80mV positive rail within negative rail, gain should taken keep output from clipping. LT1784 typically sink source over 25mA supplies, sourcing current reduced 7.5mA total supplies noted electrical characteristics. LT1784 internally compensated drive least 400pF capacitance under output loading conditions. 0.22µF capacitor series with resistor between output ground will compensate these amplifiers larger capacitive loads, 10,000pF output currents. Distortion There main contributors distortion amps: output crossover distortion output transitions from sourcing sinking current, distortion caused nonlinear common mode rejection. operating inverting, there common mode induced distortion. operating input stage (input within CMRR very good, typically 95dB. When LT1784 switches between input stages, there significant nonlinearity CMRR. Lower load resistance increases output crossover distortion effect input stage transition distortion. lowest distortion, LT1784 should operated single supply, with output always sourcing current with input voltage swing between ground -1V). Typical Performance Characteristics Curve, "Total Harmonic Distortion Noise Output Voltage Amplitude." Gain open-loop gain almost independent load when output sourcing current. This optimizes performance single supply applications where load returned ground. Typical Performance Characteric Curve "Open-Loop Gain" various loads shows details.
LT1784
APPLICATIO ATIO
Shutdown
6-lead part includes shutdown feature that disables part, reducing quiescent current making output high impedance. part shut down
TYPICAL APPLICATIO
Adjustable Clamp Negative Rectifier
LT1784
~80mV
WORKS WELL 100kHz
LT1784 VOUT
VCLAMP ~80mV WORKS WELL 100kHz
PLIFIED SCHE ATIC
SHDN 1.5k
1.5k
20µA
0.75k
0.75k
1784
LT1784 VCLAMP
bringing SHDN 1.2V more above When shut down, supply current less than VOUT normal operation, SHDN tied left floating. Typical Performance Characteristics Curve, "Supply Current SHDN Voltage."
1784 TA07
LT1784
PACKAGE DESCRIPTIO
SOT-23 (Original) 1.45 (.035 .057) (.00 .006) 1.30 (.035 .051) (.014 .021)
SOT-23 (ThinSOT) 1.00 (.039 MAX) (.0004 .004) (.031 .035) (.012 .019 REF)
2.60 3.00 (.102 .118)
(.008) DATUM
(.004 .008) (NOTE
SOT-23 (Original) 1.45 (.035 .057) 0.15 (.00 .006) 1.30 (.035 .051) (.014 .021)
SOT-23 (ThinSOT) 1.00 (.039 MAX) (.0004 .004) (.031 .035) (.012 .019 REF) 2.60 3.00 (.102 .118) 1.50 1.75 (.059 .069) (NOTE
(.008) DATUM
(.004 .008) (NOTE
Information furnished Linear Technology Corporation believed accurate reliable. However, responsibility assumed use. Linear Technology Corporation makes representation that interconnection circuits described herein will infringe existing patent rights.
Package 5-Lead Plastic SOT-23
(Reference 05-08-1633) (Reference 05-08-1635)
2.80 3.10 (.110 .118) (NOTE 1.50 1.75 (.059 .069) (NOTE (.037) (.010 .020) (5PLCS, NOTE NOTE: CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS DIMENSIONS (INCHES) DRAWING SCALE DIMENSIONS INCLUSIVE PLATING DIMENSIONS EXCLUSIVE MOLD FLASH METAL BURR MOLD FLASH SHALL EXCEED .254mm PACKAGE EIAJ REFERENCE SC-74A (EIAJ) ORIGINAL JEDEC MO-193 THIN 1.90 (.074)
SOT-23 0401
Package 6-Lead Plastic SOT-23
(Reference 05-08-1634) (Reference 05-08-1636)
2.80 3.10 (.110 .118) (NOTE
(.037)
(.010 .020) (6PLCS, NOTE
NOTE: CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS DIMENSIONS (INCHES) DRAWING SCALE DIMENSIONS INCLUSIVE PLATING DIMENSIONS EXCLUSIVE MOLD FLASH METAL BURR MOLD FLASH SHALL EXCEED .254mm PACKAGE EIAJ REFERENCE SC-74A (EIAJ) ORIGINAL JEDEC MO-193 THIN
1.90 (.074)
SOT-23 0401
LT1784
TYPICAL APPLICATIO
Protected Fault Conditions
-18V
LT1784
REVERSE BATTERY
INPUT OVERVOLTAGE
INPUT DIFFERENTIAL VOLTAGE
INPUTS BELOW GROUND
Simple Peak Detector
Single Supply Full Wave Rectifier
LT1784
BAT54
ACCURACY
BANDWIDTH 3kHz 5.7kHz 116Hz 47kHz 34Hz 96kHz
LT1784
VOUT 3VP-P, 2.5V 100k
1784 TA04
WORKS WELL 15kHz
1785 TA05
Simple Polarity Selector
1V/DIV 1V/DIV
1785 TA06a
LT1784
SHDN
FOLLOW INVERT
SHDN 5V/DIV 100µs/DIV 3VP-P 5kHz
1785 TA06b
RELATED PARTS
PART NUMBER LT1782 LT1783 LT1797 LT1637 LT1638/LT1639 LT1880 DESCRIPTION Micropower Over-The-Top Rail-to-Rail In/Out SOT-23 1.25MHz Over-The-Top Rail-to-Rail In/Out SOT-23 10MHz Rail-to-Rail In/Out SOT-23 1.1MHz Over-The-Top Rail-to-Rail In/Out Dual/Quad 1.2MHz Over-The-Top Rail-to-Rail In/Out SOT-23 Pico Input, Precision, Rail-to-Rail Output COMMENTS 55µA Supply Current, 800µV Offset Voltage 300µA Supply Current, 800µV Offset Voltage Unity-Gain Stable, 2.25µV/µs Slew Rate Micropower, 0.4V/µs Slew Rate Micropower 230µA Max, 0.4V/µs Slew Rate 150µV Offset, 900pA Bias Current
1784f LT/TP 0601 PRINTED
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2000
LT1784
LT1784
LT1784
1784 TA02
BAT54

LT1784 2.5MHz, Over-The-Top Power, Rail-to-Rail Input Output SOT-23 DE

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