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Texas Instruments TLE2161ACD
- Part No.:
- TLE2161ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2161ACD.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
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Product details
Overview
TLE2161ACD from Texas Instruments is a JFET-input, decompensated, high-output-drive µPower operational amplifier in an 8-pin SOIC (D) package. 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 gain-bandwidth product, and 500 µV max input offset voltage over 0°C to 70°C - enabling precision signal conditioning in low-power sensor interfaces and active filters.
For engineers reviewing the TLE2161ACD datasheet, TLE2161ACD pinout, TLE2161ACD application, or TLE2161ACD equivalent, this page provides verified circuit role (precision JFET op-amp), thermal grade (C-suffix, 0°C to 70°C), package mapping (SOIC-8), key drive capability specs, and two validated alternative parts for design flexibility.
Technical Context
The TLE2161ACD uses TI's Excalibur JFET process to achieve ultra-low input bias current (3 pA typ) and exceptional long-term offset stability (0.04 µV/month). Its decompensated architecture requires minimum closed-loop gain of 5 for stability, enabling higher bandwidth than unity-gain-stable counterparts.
It features rail-to-rail output swing capability relative to supply rails (e.g., ±12.5 V into 600 Ω at ±15 V), high open-loop gain (280 V/mV typ), and robust output drive (±80 mA short-circuit current), making it suitable for driving capacitive loads and moderate-impedance networks without external buffers.
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 industrial ±15 V rails. |
| Input Offset Voltage (max) | 500 µV at 25°C - enables DC-coupled precision amplification with sub-mV error budget. |
| Slew Rate | 10 V/µs typ - allows faithful reproduction of fast transients up to ~1.6 MHz full-power bandwidth. |
| Gain-Bandwidth Product | 6.5 MHz typ - supports stable closed-loop gains ≥5 with usable bandwidth >1 MHz. |
| Input Bias Current | 3 pA typ - minimizes voltage error across high-impedance sources (e.g., piezoelectric sensors). |
| Output Drive Capability | ±2.5 V min into 100 Ω at ±5 V - directly drives low-impedance loads like ADC drivers or cable interfaces. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded instrumentation and test equipment. |
Pinout & Package
Package: 8-pin SOIC (D), surface-mount, tape-and-reel compatible (TLE2161ACDR variant available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OFFSET N1 | Null adjustment terminal for fine-tuning input offset voltage. |
| 2 | IN– | Inverting input - high-impedance JFET node (10¹² Ω typical input resistance). |
| 3 | IN+ | Non-inverting input - matched high-impedance JFET node for differential sensing. |
| 4 | VCC– | Negative supply connection - must be referenced to system ground or negative rail. |
| 5 | NC | No internal connection - electrically isolated; no PCB trace required. |
| 6 | VCC+ | Positive supply connection - decoupling capacitor recommended near pin. |
| 7 | OUT | Amplified output - capable of ±80 mA short-circuit current and ±12.5 V swing into 600 Ω. |
| 8 | OFFSET N2 | Second null adjustment terminal - used with Pin 1 for offset trimming network. |
Key Features
| Feature | Design Value |
|---|---|
| High Output Drive | Delivers ±12.5 V min into 600 Ω at ±15 V - eliminates need for external output buffer stages. |
| Low Power Consumption | 280 µA typical supply current - enables battery-powered precision analog front-ends. |
| JFET Input Stage | 3 pA typical input bias current - preserves signal integrity with megohm-level source impedances. |
| Long-Term Offset Stability | 0.04 µV/month typical drift - ensures calibration longevity in unattended monitoring systems. |
| Wide Supply Range | Operates from ±3.5 V to ±18 V - simplifies design reuse across multiple power architectures. |
Applications
| Strain Gauge Signal Conditioning | Active Low-Pass Filter (10 kHz) |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role: Precision instrumentation amplifier stage with offset trim and high CMRR (≥65 dB). Use Value: 500 µV max offset and 0.04 µV/month drift maintain calibration accuracy over years without recalibration. |
Use Scenario: Implementing a 4th-order Sallen-Key low-pass filter for anti-aliasing before a 100 kSPS SAR ADC. IC Role / Device Role: Unity-gain stable buffer and gain stage (AV = 5 minimum) leveraging 6.5 MHz GBW. Use Value: 10 V/µs slew rate prevents distortion on 10 kHz sine inputs with 2 Vpp amplitude. |
| Thermocouple Cold-Junction Compensation | Photodiode Transimpedance Amplifier |
|
Use Scenario: Amplifying and cold-junction compensating Type-K thermocouple outputs in HVAC controllers. IC Role / Device Role: Low-drift, low-bias-current amplifier for µV-level thermocouple signals and RTD reference. Use Value: 3 pA input bias current avoids voltage error across high-value RTD sense resistors (e.g., 10 kΩ). |
Use Scenario: Converting nanoamp photocurrent from UV photodiodes in flame detection circuits. IC Role / Device Role: Transimpedance amplifier with JFET input to minimize dark current contribution. Use Value: 4 pF input capacitance and 10¹² Ω input resistance maximize bandwidth and SNR in high-Z current-to-voltage conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision JFET op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE2161CD | Higher input offset voltage (1.5 mV max vs. 500 µV max); same package, pinout, and decompensated architecture. | Acceptable where DC accuracy <1.5 mV is sufficient; lower cost for non-critical sensing paths. | Select TLE2161CD when offset drift and long-term stability are less critical than initial cost. |
| OPA2134PA | Unity-gain stable; lower slew rate (20 V/µs vs. 10 V/µs); higher supply current (4 mA vs. 280 µA); DIP-8 package only. | Requires no minimum gain constraint; better for general-purpose audio and unity-gain buffer roles. | Choose OPA2134PA only if unity-gain stability is mandatory and power budget allows 14× higher ICC. |
Compared with TLE2161CD and OPA2134PA, the TLE2161ACD uniquely balances ultra-low offset (500 µV), ultra-low bias current (3 pA), and high output drive (±12.5 V into 600 Ω) within a 280 µA supply envelope - making it optimal for battery-powered, high-impedance, precision DC signal chains requiring long-term calibration stability.
Availability
TLE2161ACD is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and precision data acquisition systems requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for TLE2161ACD 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 TLE2161 family belongs to TI's Excalibur JFET-input op-amp product line, engineered for high-output-drive, low-power, and long-term DC precision in demanding instrumentation and control applications.
FAQ
What is the minimum stable closed-loop gain for TLE2161ACD?
The TLE2161ACD 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 100 pF capacitive load. Using lower gains may cause oscillation or excessive overshoot. Always verify stability under actual load conditions using simulation or bench testing for the TLE2161ACD.
Does TLE2161ACD support rail-to-rail output swing?
The TLE2161ACD does not provide true rail-to-rail output swing. At ±5 V supplies, its maximum output swing is ±2.5 V into 100 Ω and ±3.7 V into 10 kΩ. At ±15 V supplies, it achieves ±12.5 V into 600 Ω and ±13.7 V into 10 kΩ. Output headroom is typically ~1.5 V from each rail under load, consistent with its bipolar output stage design.
Can TLE2161ACD drive a 100 pF capacitive load directly?
Yes - the TLE2161ACD is characterized with 100 pF capacitive load in slew rate and settling time tests (e.g., SR = 10 V/µs, ts = 10 µs for 0.01% error). Its phase margin remains >70° under these conditions. For heavier capacitive loads (>200 pF), consider isolating with a series resistor or using a dedicated buffer to maintain stability for the TLE2161ACD.
What is the input common-mode voltage range for TLE2161ACD at ±5 V supplies?
At ±5 V supplies, the TLE2161ACD supports an input common-mode voltage range of –1.6 V to +4 V (relative to ground), as specified in the "Recommended Operating Conditions" table. This range ensures proper JFET input stage biasing and avoids phase reversal or increased offset. Operation outside this range may degrade CMRR or cause unpredictable behavior for the TLE2161ACD.
Is TLE2161ACD pin-compatible with other TLE2161 variants like TLE2161CD or TLE2161ID?
Yes - all TLE2161x variants in the D-package (e.g., TLE2161ACD, TLE2161CD, TLE2161ID) share identical 8-pin SOIC pinouts and footprint. Differences lie in temperature grade (C = 0°C–70°C, I = –40°C–85°C), offset voltage spec (500 µV max for A-grade vs. 1.5 mV max for standard), and long-term drift. No PCB changes are needed when upgrading within the D-package family for the TLE2161ACD.
TLE2161ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2161ACD FAQ
1.How can I place an order for TLE2161ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2161ACD 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 TLE2161ACD reliable?
The price and inventory of TLE2161ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2161ACD is usually 5 days.
3.What payment methods are accepted for TLE2161ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2161ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2161ACD?
TLE2161ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2161ACD 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 TLE2161ACD?
For technical support, including TLE2161ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2161ACD requirements.
6.How does Aetrix verify that TLE2161ACD is sourced from the original manufacturer or authorized distributors?
All TLE2161ACD 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 TLE2161ACD meets industry standards.
7.What is the process for return or replacement of TLE2161ACD?
All TLE2161ACD units undergo pre-shipment inspection (PSI). If there is an issue with TLE2161ACD, 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 TLE2161ACD part is unused and in its original packaging.
Return procedure for TLE2161ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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