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Texas Instruments TLE2161BMJG
- Part No.:
- TLE2161BMJG
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
TLE2161BMJG.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:207
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Product details
Overview
TLE2161BMJG from Texas Instruments is a JFET-input, decompensated, high-output-drive µPower operational amplifier designed for precision analog signal conditioning in military-temperature-range systems. It delivers ±2.5 V min output swing into 100 Ω at ±5 V supplies and ±12.5 V min into 600 Ω at ±15 V supplies, with 10 V/µs typical slew rate, 6.5 MHz typical gain-bandwidth product, and 500 µV max input offset voltage at 25°C.
For engineers reviewing the TLE2161BMJG datasheet, TLE2161BMJG pinout, TLE2161BMJG application, or TLE2161BMJG equivalent, this device is selected for high-stability, low-drift, high-slew-rate amplification in aerospace instrumentation, ruggedized data acquisition, and precision sensor front-ends where operation from –55°C to +125°C is required.
Technical Context
The TLE2161BMJG uses TI's Excalibur JFET process to achieve ultra-low input bias current (3 pA typ), low long-term offset drift (0.04 µV/month), and exceptional parametric stability across temperature and time. Its decompensated architecture requires minimum closed-loop gain of 5 for stability, enabling higher bandwidth than unity-gain-stable op-amps of similar class.
It features JFET differential input stage with 10¹² Ω input resistance, 4 pF input capacitance, and internal offset-null terminals (N1/N2) for fine-tuning. The device maintains >70° phase margin with 100 pF capacitive load at AVD = 5 and RL = 10 kΩ, supporting robust driving of moderate-capacitance nodes without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±3.5 V to ±18 V - supports dual-rail operation in wide-input industrial and military power systems |
| Input Offset Voltage (max) | 500 µV at 25°C - enables DC-coupled precision gain stages with sub-mV error budget |
| Slew Rate (typ) | 10 V/µs - allows faithful reproduction of fast transients up to ~1.6 MHz full-power bandwidth |
| Gain-Bandwidth Product (typ) | 6.5 MHz - sets usable small-signal bandwidth for closed-loop gains ≥5 |
| Input Bias Current (typ) | 3 pA - minimizes voltage error across high-impedance source networks (e.g., piezoelectric sensors) |
| Output Drive Capability | ±80 mA short-circuit current - drives low-impedance loads (e.g., 100–600 Ω) without external buffers |
| Operating Temperature | –55°C to +125°C - qualified for extended-range military and downhole applications |
Pinout & Package
Ceramic Dual-In-Line Package (JG), 8-pin, through-hole, with no internal connection on pins 1 and 4. Pin 1 is OFFSET N1, pin 2 is IN–, pin 3 is IN+, pin 4 is VCC–, pin 5 is NC, pin 6 is VCC+, pin 7 is OUT, pin 8 is OFFSET N2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OFFSET N1 | Null adjustment terminal - connects to potentiometer wiper for manual offset trimming |
| 2 | IN– | Inverting input - high-impedance JFET node for feedback network attachment |
| 3 | IN+ | Non-inverting input - high-impedance JFET node for reference or signal injection |
| 4 | VCC– | Negative supply rail - must be decoupled locally to minimize noise coupling |
| 5 | NC | No internal connection - left unconnected; not used for thermal or mechanical anchoring |
| 6 | VCC+ | Positive supply rail - requires local 0.1 µF ceramic bypass capacitor |
| 7 | OUT | Amplified output - capable of sourcing/sinking ±80 mA, stable into 100 Ω + 100 pF |
| 8 | OFFSET N2 | Null adjustment terminal - connects to potentiometer end for balanced offset correction |
Key Features
| Feature | Design Value |
|---|---|
| JFET input stage | 3 pA typical input bias current enables use with >100 MΩ source impedances without significant error |
| Offset null terminals | Dedicated N1/N2 pins allow <100 µV residual offset after trimming - critical for DC-coupled measurement chains |
| High output drive | Delivers ±2.5 V into 100 Ω at ±5 V supplies - eliminates need for external output buffer in many signal-chain designs |
| Low long-term drift | 0.04 µV/month typical offset drift ensures calibration stability over multi-year deployments |
| Military temperature grade | Specified and tested from –55°C to +125°C - suitable for avionics, defense electronics, and oilfield tools |
Applications
| Aerospace Sensor Signal Conditioning | Downhole Instrumentation Amplifier |
|---|---|
Use Scenario: Amplifying low-level outputs from accelerometers and gyroscopes in flight control units under extreme thermal cycling. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming and rail-to-rail output swing capability. Use Value: Maintains <500 µV offset and <10 ppm/°C drift across –55°C to +125°C, ensuring consistent sensor calibration without recalibration. | Use Scenario: Front-end amplification of resistive bridge signals from pressure/temperature sensors in oil-well logging tools. IC Role / Device Role / Timing Role: High-Z input buffer and low-drift gain block operating directly from isolated ±15 V rails. Use Value: 3 pA input bias current prevents loading of high-resistance sensor bridges; ±12.5 V output swing drives ADC drivers without level-shifting. |
| Ruggedized Data Acquisition Channel | Military-Grade Reference Buffer |
Use Scenario: Digitizing analog sensor data in ground vehicle ECU modules exposed to engine-bay thermal stress and vibration. IC Role / Device Role / Timing Role: Anti-aliasing filter driver and multiplexer interface amplifier with low noise and high PSRR. Use Value: 93 dB supply rejection and 43 nV/√Hz input noise preserve SNR in noisy 24 V vehicle electrical environments. | Use Scenario: Buffering and scaling precision voltage references (e.g., LTZ1000) in calibration equipment for field-deployable test sets. IC Role / Device Role / Timing Role: Low-drift, low-noise unity-gain follower with offset trim for reference stability enhancement. Use Value: 0.04 µV/month long-term drift extends recalibration intervals; JFET inputs prevent reference loading by leakage paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-drive, JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134SM | Unity-gain stable; lower slew rate (8 V/µs); wider supply range (±2.5 V to ±18 V); no offset null pins | Preferred where gain <5 is required or PCB layout lacks space for trim potentiometer | Select when unity-gain stability is mandatory and offset drift tolerance >0.1 µV/month is acceptable |
| LMC6062IM | CMOS input; higher input bias current (2 fA typ but 100 pA max); lower output drive (±20 mA); no military temp grade | Suitable for low-power, battery-operated portable instruments with ambient-temperature operation only | Select for ultra-low power (<100 µA) and cost-sensitive commercial designs where military temp range is unnecessary |
Compared with OPA2134SM and LMC6062IM, the TLE2161BMJG provides unique military-grade temperature performance, dedicated offset null capability, and superior output drive-making it irreplaceable in high-reliability, high-precision, high-temperature analog signal chains where trimming and load-driving are essential.
Availability
TLE2161BMJG is available at Aetrix Electronics and suitable for aerospace sensor interfaces, downhole instrumentation, and ruggedized data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE2161BMJG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The TLE2161 family belongs to TI's Excalibur precision op-amp product line, engineered specifically for high-stability, low-drift, high-output-drive applications in demanding military, aerospace, and industrial environments.
FAQ
What is the minimum closed-loop gain required for stable operation of the TLE2161BMJG?
The TLE2161BMJG is decompensated and requires a minimum closed-loop gain of 5 for stable operation. This is specified in the datasheet to ensure adequate phase margin (>70°) with typical capacitive loads. Using the TLE2161BMJG at gains below 5 may result in oscillation or excessive ringing, especially with >100 pF load capacitance. Gain-setting resistors must be chosen accordingly to meet this constraint.
Does the TLE2161BMJG include offset null terminals, and how are they used?
Yes, the TLE2161BMJG includes dedicated offset null terminals: pin 1 (OFFSET N1) and pin 8 (OFFSET N2). These connect to the ends of a 10-kΩ potentiometer, with the wiper tied to VCC– (pin 4), enabling manual trimming of input offset voltage to <100 µV. This feature is critical for DC-coupled precision applications and is confirmed in the device's pin diagram and electrical characteristics tables.
What is the maximum output current capability of the TLE2161BMJG, and under what conditions is it specified?
The TLE2161BMJG delivers ±80 mA output current, specified as short-circuit current at 25°C with VCC± = ±15 V. It sustains ±12.5 V peak-to-peak output swing into 600 Ω and ±2.5 V into 100 Ω under the same supply conditions. Thermal limits apply per the dissipation rating table: at TA = 125°C, the JG package supports 210 mW, limiting sustained high-current operation at elevated temperatures.
How does the input bias current of the TLE2161BMJG compare to other precision op-amps, and why does it matter?
The TLE2161BMJG has a typical input bias current of 3 pA at 25°C - among the lowest for JFET-input op-amps in its class. This enables accurate amplification of signals from ultra-high-impedance sources such as photodiodes, piezoelectric sensors, or pH electrodes without introducing significant input error voltage. At –55°C to +125°C, bias current remains ≤30 nA, preserving accuracy across the full military temperature range.
Is the TLE2161BMJG pin-compatible with other variants in the TLE2161 family, such as the TLE2161AMJG or TLE2161CP?
Yes, all TLE2161 variants-including TLE2161BMJG, TLE2161AMJG, and TLE2161CP-share identical 8-pin DIP (JG/P) and SOIC (D) footprints and pinouts. The suffixes denote performance grade (B = best offset), temperature range (M = –55°C to +125°C), and package (JG = ceramic DIP). No PCB changes are required when substituting within the same package type, though design validation for offset, drift, and gain stability is recommended.
TLE2161BMJG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 6.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 290µA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CDIP
TLE2161BMJG FAQ
1.How can I place an order for TLE2161BMJG through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2161BMJG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLE2161BMJG reliable?
The price and inventory of TLE2161BMJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2161BMJG is usually 5 days.
3.What payment methods are accepted for TLE2161BMJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2161BMJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2161BMJG?
TLE2161BMJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2161BMJG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLE2161BMJG?
For technical support, including TLE2161BMJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2161BMJG requirements.
6.How does Aetrix verify that TLE2161BMJG is sourced from the original manufacturer or authorized distributors?
All TLE2161BMJG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE2161BMJG meets industry standards.
7.What is the process for return or replacement of TLE2161BMJG?
All TLE2161BMJG units undergo pre-shipment inspection (PSI). If there is an issue with TLE2161BMJG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLE2161BMJG part is unused and in its original packaging.
Return procedure for TLE2161BMJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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