Mainland China, Malaysia, Mexico, Taiwan, Thailand
ECCN Code:
EAR99
HTS Code:
8542.33.00.01
Manufacturer:
Texas Instruments
YTEOL:
15
Amplifier Type:
OPERATIONAL AMPLIFIER
Architecture:
VOLTAGE-FEEDBACK
Average Bias Current-Max (IIB):
0.0001 µA
Bias Current-Max (IIB) @25C:
0.0001 µA
Common-mode Reject Ratio-Min:
76 dB
Common-mode Reject Ratio-Nom:
84 dB
Frequency Compensation:
YES
Input Offset Current-Max (IIO):
0.00005 µA
Input Offset Voltage-Max:
3000 µV
JESD-30 Code:
R-PDSO-G5
JESD-609 Code:
e4
Length:
2.9 mm
Low-Bias:
YES
Low-Offset:
NO
Micropower:
YES
Moisture Sensitivity Level:
2
Neg Supply Voltage Limit-Max:
-18 V
Neg Supply Voltage-Nom (Vsup):
-15 V
Number of Functions:
1
Number of Terminals:
5
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
LSSOP
Package Equivalence Code:
TSOP5/6,.11,37
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Packing Method:
TR
Peak Reflow Temperature (Cel):
260
Power:
NO
Programmable Power:
NO
Qualification Status:
Not Qualified
Seated Height-Max:
1.45 mm
Slew Rate-Nom:
3.5 V/us
Supply Current-Max:
0.27 mA
Supply Voltage Limit-Max:
18 V
Supply Voltage-Nom (Vsup):
15 V
Surface Mount:
YES
Technology:
BIFET
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
0.95 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Unity Gain BW-Nom:
1000
Voltage Gain-Min:
20000
Wideband:
NO
Width:
1.6 mm
OPA137N/3K Frequently Asked Questions (FAQs)
Texas Instruments recommends a layout that minimizes parasitic inductance and capacitance, keeps the input and output traces short and symmetrical, and uses a solid ground plane to reduce noise and electromagnetic interference (EMI). A good layout also includes decoupling capacitors close to the power pins and a low-impedance path to the power supply.
The choice of gain resistors depends on the desired gain, input impedance, and noise requirements. A good starting point is to use the gain resistor values recommended in the datasheet. For non-inverting amplifiers, use R1 = R2 for unity gain, and for inverting amplifiers, use R1 = R2 * (1 - 1/G) where G is the desired gain. Always consider the trade-off between gain, bandwidth, and noise when selecting gain resistors.
The maximum power dissipation of OPA137N/3K is 500 mW. To calculate the power dissipation, use the formula Pd = (Vcc x Icc) + (Vout x Iout), where Vcc is the supply voltage, Icc is the quiescent current, Vout is the output voltage, and Iout is the output current. Ensure that the calculated power dissipation is below the maximum rating to prevent overheating and damage to the device.
Yes, OPA137N/3K can be used as a unity-gain buffer. However, this configuration can lead to instability and oscillations due to the op-amp's high gain-bandwidth product. To mitigate this, add a small capacitor (e.g., 10 pF) between the output and the inverting input to reduce the gain at high frequencies. Additionally, ensure that the input impedance is high enough to prevent loading the input signal.
To protect OPA137N/3K from EMI and RFI, use shielding, filtering, and grounding techniques. Use a metal enclosure or shielded cable to prevent electromagnetic radiation from reaching the op-amp. Add filters, such as RC low-pass filters or ferrite beads, to the input and output lines to reject high-frequency noise. Ensure a low-impedance path to the power supply and use a solid ground plane to reduce noise and EMI.
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OPA137N/3K Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
