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Texas Instruments TLE2161IP
- Part No.:
- TLE2161IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLE2161IP.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
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Product details
Overview
TLE2161IP from Texas Instruments is a JFET-input, decompensated, precision operational amplifier optimized for high-output-drive applications in industrial and test equipment. It delivers ±12.5 V min output swing into 600 Ω at ±15 V supplies, achieves 10 V/µs typical slew rate and 6.5 MHz typical gain-bandwidth product, and consumes only 280 µA typical supply current - enabling high-fidelity signal conditioning with ultra-low power.
For engineers reviewing the TLE2161IP datasheet, TLE2161IP pinout, TLE2161IP application, or TLE2161IP equivalent, this device is selected for precision analog front-ends requiring low input bias current (5 pA typ), low long-term offset drift (0.04 µV/month), wide supply range (±3.5 V to ±18 V), and stable performance across –40°C to +85°C.
Technical Context
The TLE2161IP uses TI's Excalibur JFET process to combine precision DC performance with robust dynamic capability. Its decompensated architecture mandates minimum closed-loop gain of 5 for stability, enabling higher bandwidth than unity-gain-stable op-amps of comparable class.
It features dual offset-null pins (N1/N2) for manual trimming, JFET differential pair input stage yielding >1 TΩ input resistance and sub-pA bias current, and internal compensation tailored for fast settling (5 µs to 0.1%) into capacitive loads up to 100 pF with 70° phase margin at AV = 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±3.5 V to ±18 V - supports dual-rail operation in legacy ±5 V, ±12 V, and ±15 V systems without level-shifting. |
| Slew Rate | 10 V/µs typ - enables faithful reproduction of fast-rising signals (e.g., pulse amplification, active filter transients) without slew-induced distortion. |
| Gain-Bandwidth Product | 6.5 MHz typ - allows stable closed-loop gain ≥5 configurations up to ~1.3 MHz bandwidth (e.g., AV = 5, f−3dB ≈ GBW/AV). |
| Input Bias Current | 5 pA typ - minimizes voltage error in high-impedance sensor interfaces (e.g., piezoelectric, photodiode transimpedance stages). |
| Input Offset Voltage | 500 µV max at 25°C (TLE2161A-grade) - ensures <0.5 mV initial DC error in precision instrumentation amplifiers and reference buffers. |
| Output Drive Capability | ±12.5 V min into 600 Ω at ±15 V - drives moderate loads directly (e.g., ADC drivers, line drivers) without external boost stages. |
| Long-Term Offset Drift | 0.04 µV/month typ - guarantees sub-µV baseline stability over multi-year deployments in calibration equipment and metrology systems. |
Pinout & Package
Package: 8-pin plastic DIP (P package), through-hole mounting, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OFFSET N1 | Null adjustment terminal - connects to potentiometer wiper for manual input offset trimming; required for sub-100 µV system-level DC accuracy. |
| 2 | IN– | Inverting input - high-impedance JFET node; sensitive to PCB leakage and guarding requirements in µV-level applications. |
| 3 | IN+ | Non-inverting input - matched to IN– for optimal CMRR; requires symmetrical layout and guard ring for best common-mode rejection. |
| 4 | VCC– | Negative supply rail - must be decoupled locally with 0.1 µF ceramic capacitor to suppress ground bounce in high-slew-rate operation. |
| 5 | NC | No internal connection - left unconnected; no routing or grounding required. |
| 6 | OUT | Amplified output - capable of sourcing/sinking ±80 mA peak; requires thermal consideration when driving low-Z loads continuously. |
| 7 | VCC+ | Positive supply rail - decoupling critical; recommended 0.1 µF ceramic + 10 µF tantalum per rail near device pins. |
| 8 | OFFSET N2 | Null adjustment terminal - connects to opposite end of same potentiometer as OFFSET N1; forms balanced nulling network. |
Key Features
| Feature | Design Value |
|---|---|
| JFET-input architecture | 5 pA typical input bias current enables direct interfacing with megohm-range sensors without significant loading error. |
| Excalibur process parametric stability | 0.04 µV/month offset drift ensures calibration intervals extend beyond 5 years in fixed-installation test gear. |
| High-output-drive capability | ±12.5 V into 600 Ω at ±15 V allows direct driving of 12-bit SAR ADC references or 50 Ω coaxial cables via series termination. |
| Decompensated design | Stable at AV ≥ 5 - trades unity-gain flexibility for +30% higher bandwidth and +2× slew rate versus comparable compensated op-amps. |
| Dual offset-null pins | Enables <50 µV residual offset after trimming - critical for DC-coupled integrators and zero-drift amplifier front-ends. |
Applications
| High-Voltage Sensor Signal Conditioning | Precision Reference Buffering |
|---|---|
|
Use Scenario: Amplifying low-level outputs from strain-gauge bridges or RTD interfaces where excitation voltages reach ±12 V and load impedance exceeds 600 Ω. IC Role / Device Role / Timing Role: Primary gain stage with programmable offset correction, operating at closed-loop gain of 10 to achieve 12-bit effective resolution. Use Value: Delivers full-scale output swing (>±12 V) while maintaining <1 LSB error due to its low offset drift and high PSRR (≥75 dB). |
Use Scenario: Buffering precision voltage references (e.g., REF5025) for multiple ADCs or DACs in automated test equipment. IC Role / Device Role / Timing Role: Unity-gain follower configured at AV = 5 minimum (using feedback network) to ensure stability and preserve reference accuracy. Use Value: Maintains reference integrity under varying load conditions (0–10 mA) with <0.5 mV droop and <1 µV noise contribution in 0.1–10 Hz band. |
| Industrial Process Controller Output Stage | Active Filter for Data Acquisition Front-End |
|
Use Scenario: Driving 4–20 mA loop transmitters or analog output modules requiring rail-to-rail compatible voltage compliance up to ±13 V. IC Role / Device Role / Timing Role: Final output driver in a programmable gain amplifier chain, delivering conditioned signal to isolation or current-conversion circuitry. Use Value: Sustains ±12.5 V swing into 600 Ω load while consuming only 325 µA - enabling low-power, high-dynamic-range output stages. |
Use Scenario: Implementing 2nd-order anti-aliasing or reconstruction filters in portable data loggers with battery-powered µP supervision. IC Role / Device Role / Timing Role: Active component in Sallen-Key topology, leveraging high GBW and low noise to maintain SNR >90 dB up to 100 kHz. Use Value: Achieves 420 kHz maximum output-swing bandwidth at AV = 5, supporting oversampling architectures without external buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134PA | Unity-gain stable; lower slew rate (8 V/µs); higher supply current (4 mA); no offset-null pins. | Preferred for general-purpose audio and unity-gain buffer roles where trimming isn't required and bandwidth <1 MHz suffices. | Select OPA2134PA when board space is constrained and offset trim is unnecessary; avoid for high-slew, low-drift, or trimmed-precision use cases. |
| TL072CP | Lower precision (6 mV VIO max); higher bias current (200 pA); no offset-null; wider availability but obsolete in new designs. | Suitable for non-critical AC-coupled signal paths (e.g., tone control, basic preamps) where cost dominates performance. | Choose TL072CP only for legacy repair or cost-sensitive consumer applications; not recommended for metrology or industrial control. |
Compared with OPA2134PA and TL072CP, the TLE2161IP provides uniquely low long-term drift and manual offset trimming capability - making it irreplaceable in calibration-grade instrumentation where baseline stability over years is mandatory.
Availability
TLE2161IP is available at Aetrix Electronics and suitable for industrial process controllers, automated test equipment, and precision sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE2161IP 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 leader specializing in analog and embedded processing technologies, with decades of heritage in precision op-amp design and manufacturing.
The TLE2161IP belongs to TI's Excalibur JFET-input op-amp family, engineered specifically for high-output-drive, low-drift, and long-term stability in industrial instrumentation and test systems.
FAQ
What is the minimum stable closed-loop gain for TLE2161IP?
The TLE2161IP is decompensated and requires a minimum closed-loop gain of 5 for stable operation. This is enforced by internal compensation; using it at unity or low gain (e.g., AV = 1 or 2) will cause oscillation or excessive ringing. Designers must configure feedback networks accordingly - for example, a non-inverting amplifier with Rf/Rg ≥ 4.
Does TLE2161IP support dual-supply operation down to ±3.5 V?
Yes, TLE2161IP is fully specified for dual-supply operation from ±3.5 V to ±18 V. At ±3.5 V, it maintains functional performance including 2.5 V min output swing into 100 Ω and usable gain-bandwidth, though slew rate and output drive scale downward linearly with supply voltage.
How is offset nulling implemented on TLE2161IP?
TLE2161IP provides dedicated OFFSET N1 and OFFSET N2 pins (pins 1 and 8). A 10 kΩ potentiometer is connected between these pins, with its wiper tied to VCC–. Adjusting the potentiometer balances internal input stage mismatches, reducing input offset voltage to <50 µV in production calibration.
What is the maximum capacitive load TLE2161IP can drive stably?
TLE2161IP is characterized for stable operation with up to 100 pF capacitive load when configured at AV = 5 and RL = 10 kΩ, exhibiting 70° phase margin. Driving larger capacitances (e.g., >200 pF) requires external isolation resistor (e.g., 50 Ω in series with output) to maintain stability without compromising step response.
Is TLE2161IP suitable for single-supply operation?
No - TLE2161IP is designed exclusively for dual-supply operation (VCC+ and VCC–). Its input common-mode range does not extend to either rail, and output swing is asymmetric under single-supply bias. For single-supply applications, consider rail-to-rail input/output op-amps such as OPA333 or TLV2462.
TLE2161IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-DIP (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:
- 600 µV
- Current - Supply:
- 290µA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLE2161IP FAQ
1.How can I place an order for TLE2161IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2161IP 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 TLE2161IP reliable?
The price and inventory of TLE2161IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2161IP is usually 5 days.
3.What payment methods are accepted for TLE2161IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2161IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2161IP?
TLE2161IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2161IP 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 TLE2161IP?
For technical support, including TLE2161IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2161IP requirements.
6.How does Aetrix verify that TLE2161IP is sourced from the original manufacturer or authorized distributors?
All TLE2161IP 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 TLE2161IP meets industry standards.
7.What is the process for return or replacement of TLE2161IP?
All TLE2161IP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2161IP, 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 TLE2161IP part is unused and in its original packaging.
Return procedure for TLE2161IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2161IP Tags
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