Datasheet LT1124, LT1125 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual/Quad Low Noise, High Speed Precision Op Amps |
| Pages / Page | 20 / 1 — FeaTures. DescripTion. applicaTions. Typical applicaTion. Instrumentation … |
| File Format / Size | PDF / 383 Kb |
| Document Language | English |
FeaTures. DescripTion. applicaTions. Typical applicaTion. Instrumentation Amplifier with Shield Driver
Model Line for this Datasheet
Text Version of Document
LT1124/LT1125 Dual/Quad Low Noise, High Speed Precision Op Amps
FeaTures DescripTion
n 100% Tested Low Voltage Noise: The LT®1124 dual and LT1125 quad are high performance 2.7nV/√Hz Typ op amps that offer higher gain, slew rate and bandwidth 4.2nV/√Hz Max than the industry standard OP-27 and competing OP-270/ n Slew Rate: 4.5V/µs Typ OP-470 op amps. In addition, the LT1124/LT1125 have n Gain-Bandwidth Product: 12.5MHz Typ lower IB and IOS than the OP-27; lower VOS and noise n Offset Voltage, than the OP-270/OP-470. Prime Grade: 70µV Max In the design, processing and testing of the device, par- Low Grade: 100µV Max ticular attention has been paid to the optimization of the n High Voltage Gain: 5 Million Min entire distribution of several key parameters. Slew rate, n Supply Current Per Amplifier: 2.75mA Max gain bandwidth and 1kHz noise are 100% tested for each n Common Mode Rejection: 112dB Min individual amplifier. Consequently, the specifications n Power Supply Rejection: 116dB Min of even the lowest cost grades (the LT1124C and the n Available in 8-Pin SO Package LT1125C) have been spectacularly improved compared to equivalent grades of competing amplifiers.
applicaTions
Power consumption of the LT1124 is one-half of two n Two and Three Op Amp Instrumentation Amplifiers OP-27s. Low power and high performance in an 8-pin n Low Noise Signal Processing SO package make the LT1124 a first choice for surface n mounted systems and where board space is restricted. Active Filters n Microvolt Accuracy Threshold Detection For a decompensated version of these devices, with three n Strain Gauge Amplifiers times higher slew rate and bandwidth, please see the n Direct Coupled Audio Gain Stages LT1126/LT1127 data sheet. n Tape Head Preamplifiers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Technology Corporation. All other trademarks are the property of their respective owners. Infrared Detectors Protected by U.S. Patents including 4775884, 4837496.
Typical applicaTion Instrumentation Amplifier with Shield Driver
3
Input Offset Voltage Distribution
+ 1/4 1 1k 30k
(All Packages, LT1124 and LT1125)
LT1125 2 – RF V 758 DUALS 3.4k 15V S = ±15V 30 TA = 25°C 200 QUADS 5 4 2316 UNITS GUARD + TESTED RG 1/4 100Ω 7 OUTPUT + 10 LT1125 6 + – 20 8 1/4 11 INPUT R LT1125 G 30k – 100Ω – 9 –15V PERCENT OF UNITS 10 GUARD GAIN = 30 (1 + RF/RG) ≈ 1000 POWER BW = 170kHz SMALL-SIGNAL BW = 400kHz 13 – RF NOISE = 3.8µV/ Hz √ AT OUTPUT 3.4k 0 VOS = 35µV 1/4 14 –100 –60 –20 20 60 100 LT1125 INPUT OFFSET VOLTAGE (µV) 12 + 1k 1124/25 TA02 1124/25 TA01 11245ff For more information www.linear.com/LT1124 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Performance Comparison Typical Applications Schematic Diagram Package Description Revision History Typical Application Related Parts
FeaTures DescripTion
n 100% Tested Low Voltage Noise: The LT®1124 dual and LT1125 quad are high performance 2.7nV/√Hz Typ op amps that offer higher gain, slew rate and bandwidth 4.2nV/√Hz Max than the industry standard OP-27 and competing OP-270/ n Slew Rate: 4.5V/µs Typ OP-470 op amps. In addition, the LT1124/LT1125 have n Gain-Bandwidth Product: 12.5MHz Typ lower IB and IOS than the OP-27; lower VOS and noise n Offset Voltage, than the OP-270/OP-470. Prime Grade: 70µV Max In the design, processing and testing of the device, par- Low Grade: 100µV Max ticular attention has been paid to the optimization of the n High Voltage Gain: 5 Million Min entire distribution of several key parameters. Slew rate, n Supply Current Per Amplifier: 2.75mA Max gain bandwidth and 1kHz noise are 100% tested for each n Common Mode Rejection: 112dB Min individual amplifier. Consequently, the specifications n Power Supply Rejection: 116dB Min of even the lowest cost grades (the LT1124C and the n Available in 8-Pin SO Package LT1125C) have been spectacularly improved compared to equivalent grades of competing amplifiers.
applicaTions
Power consumption of the LT1124 is one-half of two n Two and Three Op Amp Instrumentation Amplifiers OP-27s. Low power and high performance in an 8-pin n Low Noise Signal Processing SO package make the LT1124 a first choice for surface n mounted systems and where board space is restricted. Active Filters n Microvolt Accuracy Threshold Detection For a decompensated version of these devices, with three n Strain Gauge Amplifiers times higher slew rate and bandwidth, please see the n Direct Coupled Audio Gain Stages LT1126/LT1127 data sheet. n Tape Head Preamplifiers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Technology Corporation. All other trademarks are the property of their respective owners. Infrared Detectors Protected by U.S. Patents including 4775884, 4837496.
Typical applicaTion Instrumentation Amplifier with Shield Driver
3
Input Offset Voltage Distribution
+ 1/4 1 1k 30k
(All Packages, LT1124 and LT1125)
LT1125 2 – RF V 758 DUALS 3.4k 15V S = ±15V 30 TA = 25°C 200 QUADS 5 4 2316 UNITS GUARD + TESTED RG 1/4 100Ω 7 OUTPUT + 10 LT1125 6 + – 20 8 1/4 11 INPUT R LT1125 G 30k – 100Ω – 9 –15V PERCENT OF UNITS 10 GUARD GAIN = 30 (1 + RF/RG) ≈ 1000 POWER BW = 170kHz SMALL-SIGNAL BW = 400kHz 13 – RF NOISE = 3.8µV/ Hz √ AT OUTPUT 3.4k 0 VOS = 35µV 1/4 14 –100 –60 –20 20 60 100 LT1125 INPUT OFFSET VOLTAGE (µV) 12 + 1k 1124/25 TA02 1124/25 TA01 11245ff For more information www.linear.com/LT1124 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Performance Comparison Typical Applications Schematic Diagram Package Description Revision History Typical Application Related Parts
