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Texas Instruments TLE2161AIDR
- Part No.:
- TLE2161AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2161AIDR.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,722
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Product details
Overview
TLE2161AIDR from Texas Instruments is a JFET-input, decompensated, high-output-drive µPower operational amplifier optimized for precision analog signal conditioning in industrial and test equipment. It delivers ±2.5 V min output swing into 100 Ω at ±5 V supplies, achieves 10 V/µs typical slew rate and 6.5 MHz gain-bandwidth product, and operates across –40°C to +85°C with 500 µV max input offset voltage.
For engineers reviewing the TLE2161AIDR datasheet, TLE2161AIDR pinout, TLE2161AIDR application, or TLE2161AIDR equivalent, key selection criteria include its JFET-input low bias current (5 pA typ), wide supply range (±3.5 V to ±18 V), high open-loop gain (280 V/mV typ), and stability at closed-loop gains ≥5 - critical for active filter, sensor interface, and precision driver designs.
Technical Context
The TLE2161AIDR uses TI's Excalibur JFET process to combine low power (280 µA typ ICC) with high dynamic performance: its decompensated architecture enables 10 V/µs slew rate and 6.5 MHz GBW while maintaining dc precision (500 µV max VIO, 0.04 µV/month long-term drift). It features internal offset null terminals (N1/N2) for fine-tuning and supports rail-to-rail output swing under load.
Its high output drive capability (±80 mA short-circuit current, ±12.5 V min into 600 Ω at ±15 V) stems from a robust output stage designed for driving capacitive and resistive loads without external buffers. The device maintains CMRR ≥65 dB and PSRR ≥75 dB across temperature, ensuring stable operation in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±3.5 V to ±18 V - supports dual-supply systems from low-voltage portable to high-dynamic-range industrial rails. |
| Input Offset Voltage (Max) | 500 µV at 25°C - enables high-accuracy dc-coupled amplification without trimming in precision instrumentation. |
| Slew Rate (Typ) | 10 V/µs - allows faithful reproduction of fast transients in pulse amplification and active filter applications. |
| Gain-Bandwidth Product (Typ) | 6.5 MHz - supports stable closed-loop gains ≥5 with bandwidth up to ~1.3 MHz at AV = 5. |
| Input Bias Current (Typ) | 5 pA - minimizes voltage error in high-impedance sensor interfaces (e.g., photodiode, piezoelectric transducers). |
| Output Drive (Min) | ±12.5 V into 600 Ω at ±15 V - eliminates need for external buffer stages in moderate-load driver circuits. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial and automotive under-hood environments. |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, tape-and-reel compatible (DR suffix denotes reel packaging).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null N1 | Connects to internal offset compensation network; used with Pin 5 and external potentiometer for VIO trimming. |
| 2 | Inverting Input (IN–) | Differential input node; high-impedance JFET input (10¹² Ω) minimizes loading on source. |
| 3 | Non-Inverting Input (IN+) | Differential input node; matched to IN– for common-mode rejection and precision biasing. |
| 4 | VCC– | Negative supply rail connection; must be decoupled locally to suppress noise and ensure stability. |
| 5 | Offset Null N2 | Second terminal of internal offset null network; used with Pin 1 for manual calibration. |
| 6 | Output (OUT) | Class-AB output stage capable of ±80 mA short-circuit current and ±12.5 V swing into 600 Ω. |
| 7 | VCC+ | Positive supply rail connection; requires local 0.1 µF ceramic decoupling capacitor. |
| 8 | No Connect (NC) | Internally unconnected; no external connection required - improves layout isolation and reduces parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| JFET-input architecture | 5 pA typical input bias current enables ultra-high-impedance signal sources without gain error. |
| Decompensated design | Stable only at closed-loop gains ≥5 - trades unity-gain stability for higher slew rate and bandwidth. |
| Offset null terminals | Pins 1 and 5 allow sub-100 µV system-level offset calibration, critical for multi-stage precision amplifiers. |
| High output current drive | ±80 mA short-circuit rating supports direct driving of cables, relays, and ADC input buffers without external drivers. |
| Low long-term drift | 0.04 µV/month typical offset drift ensures calibration stability over years in unattended measurement systems. |
Applications
| Strain Gauge Signal Conditioning | Active Filter Driver Stage |
|---|---|
Use Scenario: Amplifying low-level mV-level differential signals from full-bridge strain gauges in load cells and pressure sensors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with adjustable gain and offset nulling. Use Value: 500 µV max VIO and 5 pA IB minimize zero-point error and thermal EMF-induced drift in Wheatstone bridge outputs. | Use Scenario: Driving the output of a 4th-order Sallen-Key low-pass filter into a 10 kΩ ADC input with minimal settling distortion. IC Role / Device Role / Timing Role: High-slew-rate, low-noise buffer stage ensuring full-scale step response fidelity. Use Value: 10 V/µs slew rate and 6.5 MHz GBW preserve filter phase linearity and enable <5 µs 0.1% settling to 2 V steps. |
| High-Voltage Sensor Interface | Industrial Analog Output Driver |
Use Scenario: Level-shifting and amplifying isolated current-sense signals (e.g., shunt-based motor phase monitoring) referenced to floating grounds. IC Role / Device Role / Timing Role: Single-supply or dual-supply difference amplifier with rail-compatible inputs and robust ESD tolerance. Use Value: ±18 V max supply and ±12.5 V output swing into 600 Ω allow direct interfacing with ±10 V industrial I/O standards. | Use Scenario: Generating precise 4–20 mA or 0–10 V analog outputs for PLC modules and process controllers. IC Role / Device Role / Timing Role: Voltage-controlled current source driver with high loop gain and low thermal drift. Use Value: 280 V/mV open-loop gain and 75 dB PSRR maintain output accuracy despite supply ripple and load variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134PA | Unity-gain stable, lower slew rate (8 V/µs), no offset null pins, 10 V/µs slew rate not guaranteed. | Preferred where gain <5 is required or board space prohibits external trim components. | Select OPA2134PA when unity-gain stability or simplified layout outweighs need for maximum speed and trimmability. |
| TL072CDR | Lower precision (3 mV VIO max), higher supply current (1.4 mA), no offset null, JFET-input but older process. | Suitable for non-critical AC-coupled audio or general-purpose amplification where cost is primary. | Choose TL072CDR only for cost-sensitive, non-precision applications where 500 µV offset and 5 pA IB are not required. |
Compared with OPA2134PA and TL072CDR, the TLE2161AIDR uniquely combines decompensated speed (10 V/µs), factory-trimmable offset (via Pins 1/5), and ultra-low bias current in an industrial-grade SOIC-8 package - making it optimal for high-fidelity, high-impedance, medium-gain signal chains requiring long-term calibration stability.
Availability
TLE2161AIDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, precision data acquisition systems, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE2161AIDR 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 expertise in precision op-amps and industrial-grade signal conditioning ICs.
The TLE2161 family belongs to TI's Excalibur JFET-input op-amp product line, engineered specifically for high-output-drive, low-power, and long-term dc stability in demanding industrial and test instrumentation applications.
FAQ
What is the minimum stable closed-loop gain for TLE2161AIDR?
The TLE2161AIDR is decompensated and specified for stable operation only at closed-loop gains of 5 or greater. Attempting unity-gain or gain-of-2 configurations may cause oscillation due to insufficient phase margin. Designers must verify stability with actual load and PCB parasitics using the recommended 100 pF compensation capacitor across feedback if needed.
Does TLE2161AIDR support single-supply operation?
Yes, the TLE2161AIDR supports single-supply operation with proper input common-mode and output swing constraints. When operated from +10 V and GND, its VICR extends to –1.6 V to +4 V (at ±5 V equiv), and VOM+ reaches +3.1 V into 100 Ω. For true rail-to-rail input/output, external level-shifting or biasing is required - the TLE2161AIDR itself is not rail-to-rail.
How do I use the offset null pins on TLE2161AIDR?
Connect a 20-kΩ potentiometer between Pins 1 (N1) and 5 (N2), with the wiper grounded. Adjusting the potentiometer nulls input offset voltage to <100 µV. This is especially valuable in multi-stage dc-coupled amplifiers where cumulative offset would otherwise saturate later stages. Do not leave Pins 1 or 5 floating.
What is the maximum capacitive load TLE2161AIDR can drive without instability?
The TLE2161AIDR can safely drive up to 100 pF capacitive load with 10 kΩ series resistance (per Figure 3 in datasheet) while maintaining ≥70° phase margin. Driving larger capacitive loads directly risks peaking or oscillation; for >100 pF, add a 10–100 Ω isolation resistor in series with the output and place the capacitor beyond it - preserving closed-loop stability.
Is TLE2161AIDR pin-compatible with other devices in the TLE2161 family?
Yes, all TLE2161x variants (TLE2161C, TLE2161A, TLE2161B, and their I/M-suffix versions) share identical SOIC-8 (D) pinouts and electrical pin functions. The "A" suffix denotes tighter initial offset voltage (500 µV max vs. 1.5 mV for standard TLE2161), but pin mapping, footprint, and connection topology are fully interchangeable.
TLE2161AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 500 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2161AIDR FAQ
1.How can I place an order for TLE2161AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2161AIDR 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 TLE2161AIDR reliable?
The price and inventory of TLE2161AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2161AIDR is usually 5 days.
3.What payment methods are accepted for TLE2161AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2161AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2161AIDR?
TLE2161AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2161AIDR 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 TLE2161AIDR?
For technical support, including TLE2161AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2161AIDR requirements.
6.How does Aetrix verify that TLE2161AIDR is sourced from the original manufacturer or authorized distributors?
All TLE2161AIDR 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 TLE2161AIDR meets industry standards.
7.What is the process for return or replacement of TLE2161AIDR?
All TLE2161AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2161AIDR, 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 TLE2161AIDR part is unused and in its original packaging.
Return procedure for TLE2161AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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