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Texas Instruments TLE26621DWR
- Part No.:
- TLE26621DWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TLE26621DWR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
TLE26621DWR from Texas Instruments is a dual µPower JFET-input operational amplifier with integrated switched-capacitor voltage converter, enabling true rail-to-rail input operation and negative supply generation (–5 V at 100 mA) from a single 3.5–15 V input. It delivers ±25 mA output sink/source capability, 2.2–3.4 V/µs slew rate, and 1.8–2 MHz unity-gain bandwidth for precision signal conditioning in low-power industrial sensor interfaces.
For engineers reviewing the TLE26621DWR datasheet, TLE26621DWR pinout, TLE26621DWR application, or TLE26621DWR equivalent, this device supports single-supply systems requiring extended common-mode range, bipolar output swing below ground, and on-chip charge-pump-derived negative rail for analog front-ends without external DC/DC converters.
Technical Context
The TLE26621DWR integrates two independent JFET-input op-amps with picoampere-level input bias current (≤4 pA typ) and a synchronized 15–35 kHz switched-capacitor block that functions as a voltage inverter/regulator. Its FB/SD pin enables shutdown of the SC section while maintaining amplifier quiescent current below 720 µA.
Input common-mode range extends to VCC± rails (e.g., –1.6 V to +4 V at ±5 V supplies), and outputs swing to within 200 mV of rails into 100 Ω loads. The SCOUT terminal provides regulated –4.0 to –5.2 V at up to 100 mA, with internal 2.5-V reference (SCREF) available for external regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 3.5 V to 15 V single supply; supports generation of negative rail for bipolar operation |
| Input Bias Current | ≤4 pA max at 85°C - preserves high-impedance sensor node integrity |
| Output Drive | ±25 mA min into 100 Ω load - drives low-impedance transducers or ADC drivers directly |
| Slew Rate | 2.2–3.4 V/µs - enables accurate amplification of fast-slewing signals up to ~100 kHz |
| Unity-Gain BW | 1.8–2 MHz - sufficient for anti-aliasing filters and medium-speed instrumentation |
| SCOUT Output | –4.0 to –5.2 V at 100 mA - powers op-amp negative rail and external circuitry without discrete inverter |
| Shutdown Current | ≤150 µA - reduces system standby power in battery-operated monitoring devices |
Pinout & Package
Package: 16-pin wide-body SOIC (DW), surface-mount, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT, 2OUT | Amplifier output stages | Drive loads to rail and beyond; sink ≥25 mA while reaching 0 V |
| 1IN+, 1IN–, 2IN+, 2IN– | Differential inputs | JFET-input structure ensures ≤4 pA bias current and >1 TΩ input resistance |
| VCC+, VCC– | Op-amp supply rails | VCC– connects to SCOUT-generated negative rail; enables true bipolar operation |
| SCOUT | Switched-capacitor output | Delivers regulated negative voltage (–4.0 to –5.2 V) up to 100 mA for local rail generation |
| SCREF | Internal 2.5-V reference | Accessible for external feedback divider to adjust SCOUT regulation point |
| FB/SD | Feedback/shutdown control | Pull low to disable SC section; draws <150 µA in shutdown mode |
| OSC | Oscillator sync/control | Accepts external clock (15–35 kHz) or capacitor-tuned internal oscillator |
| CAP+, CAP–, SCIN, GND | Charge-pump interface | Connect external capacitors to configure inverter topology and filter switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Extends from VCC– to VCC+ (e.g., –1.6 V to +4 V at ±5 V), enabling full dynamic range use in single-supply data acquisition |
| Integrated charge pump | Generates –4.0 to –5.2 V at 100 mA without inductors or transformers - simplifies PCB layout and reduces BOM count |
| Ultra-low input bias current | ≤4 pA max over temperature - critical for high-impedance pH sensors, photodiode amps, and piezoelectric interfaces |
| Shutdown control | FB/SD pin disables SC section only; op-amps remain active with <720 µA total ICC - enables selective power gating |
| On-chip 2.5-V reference | SCREF pin provides stable reference for external SCOUT regulation or auxiliary circuitry - eliminates need for external REF IC |
Applications
| Industrial Sensor Signal Conditioning | Portable Data Loggers |
|---|---|
Use Scenario: Amplifying low-level outputs from strain gauges, RTDs, or thermocouples in 4–20 mA loop-powered transmitters. IC Role / Device Role / Timing Role: Dual op-amp configures instrumentation amplifier and output buffer; SCOUT supplies negative rail for bipolar signal swing. Use Value: Eliminates external negative supply, reducing component count by ≥3 parts while maintaining ±10 V output compliance. | Use Scenario: Battery-powered environmental monitors measuring temperature, humidity, and gas concentration over multi-year deployments. IC Role / Device Role / Timing Role: Op-amps condition sensor outputs; SC section disabled during sleep via FB/SD to cut supply current to 265 µA. Use Value: Extends battery life by >40% vs. discrete op-amp + DC/DC solution due to sub-µA shutdown and µPower operation. |
| Medical Patient Monitoring Front-End | Test & Measurement Equipment |
Use Scenario: Biopotential acquisition (ECG, EEG) requiring high CMRR, low noise, and electrode offset handling. IC Role / Device Role / Timing Role: First-stage amplifier with rail-to-rail input accepts ±300 mV electrode offsets; SCOUT powers second-stage filtering stage. Use Value: Achieves <1 µVpp input-referred noise (0.1–10 Hz) and >65 dB CMRR without external rail generators. | Use Scenario: Benchtop multimeters and oscilloscope front-ends needing precision gain, offset correction, and autoranging. IC Role / Device Role / Timing Role: Dual op-amp implements programmable gain stage and reference buffer; SCREF provides stable 2.5 V for DAC calibration. Use Value: Enables 16-bit effective resolution through <5 mV input offset and <6 µV/°C drift - meets Class I accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp with integrated power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6482IMX/NOPB | Single-supply dual CMOS op-amp (no integrated SC converter); 1 pA IB, 1.5 MHz GBW, no negative rail generation | Requires external charge pump or split supply; suitable only where negative rail is already available | Select when system already provides bipolar rails and ultra-low IB is primary requirement |
| MAX44260ASA+ | Low-noise dual op-amp with integrated LDO (not SC); 0.9 pA IB, 10 MHz GBW, fixed 3.3 V LDO output | Provides positive auxiliary rail only; cannot generate negative voltage for true bipolar operation | Select when auxiliary positive rail needed but negative rail is handled separately |
Compared with LMC6482IMX/NOPB and MAX44260ASA+, the TLE26621DWR uniquely integrates a configurable switched-capacitor inverter capable of delivering –5 V at 100 mA - eliminating external DC/DC components required by both alternatives to achieve full rail-to-rail input and bipolar output swing.
Availability
TLE26621DWR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable data loggers, medical biopotential front-ends, and test equipment requiring stable component supply with long-term lifecycle support.
Supply support for TLE26621DWR 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, embedded processing, and power management technologies with over 50 years of innovation in precision analog ICs.
The TLE2662 product line was designed specifically for single-supply industrial and medical instrumentation systems needing integrated negative rail generation, ultra-low input bias current, and rail-to-rail input performance without external power conversion.
FAQ
What is the maximum output current capability of the TLE26621DWR's SCOUT terminal?
The TLE26621DWR's SCOUT terminal delivers up to 100 mA of continuous output current at a regulated –4.0 to –5.2 V level, depending on input voltage and load conditions. This current rating is verified across the full industrial temperature range (–40°C to +85°C) and supports direct powering of the op-amp's VCC– rail and external analog circuitry without additional regulation stages. The TLE26621DWR maintains this capability while sustaining <1.6 V voltage loss at 100 mA under typical 7 V SCIN conditions.
Does the TLE26621DWR support synchronization of its internal oscillator to an external clock?
Yes, the TLE26621DWR supports external clock synchronization via the OSC pin, which accepts TTL/CMOS-compatible signals in the 15–35 kHz range. This allows precise timing alignment with system clocks to minimize beat frequencies and switching noise coupling into sensitive analog paths. When not driven externally, the internal oscillator operates at nominal 25 kHz and can be tuned using an external capacitor connected to the OSC pin. The TLE26621DWR's oscillator remains functional across the full –40°C to +85°C temperature range.
How does the FB/SD pin function in the TLE26621DWR?
The FB/SD pin on the TLE26621DWR serves dual roles: as a feedback node for regulating SCOUT output voltage using external resistors, and as a shutdown control. When pulled low (<0.8 V), it disables the switched-capacitor section, reducing its supply current to ≤150 µA while leaving the op-amps fully operational. This selective shutdown enables power optimization in systems where analog signal path must remain active but auxiliary rail generation is temporarily unnecessary. The TLE26621DWR retains full amplifier functionality-including rail-to-rail input and ±25 mA drive-during SC section shutdown.
What is the input offset voltage specification for the TLE26621DWR over temperature?
The TLE26621DWR has a maximum input offset voltage of 6.3 mV over the full industrial temperature range (–40°C to +85°C) at ±5 V supplies, and 5.3 mV at ±15 V supplies. Its temperature coefficient is specified at 6 µV/°C max, ensuring predictable drift behavior in thermally varying environments. These values are measured per standard op-amp test conditions (RS = 50 Ω, VIC = 0 V) and apply independently to each amplifier channel. The TLE26621DWR's offset performance supports precision applications such as 16-bit data acquisition where gain errors must remain below 0.05% FS.
Can the TLE26621DWR operate with a 3.3 V single supply?
No, the TLE26621DWR requires a minimum supply voltage of 3.5 V per its recommended operating conditions - a 3.3 V rail falls below this threshold and may result in undefined SC section behavior, reduced output drive, or failure to regulate SCOUT. At 3.5 V, the device guarantees SCOUT output of –3.75 V (min) at 10 mA load, and op-amp performance including rail-to-rail input operation and 2.2 V/µs slew rate. For 3.3 V systems, alternative solutions such as the LMC6482 or MAX44260 should be evaluated. The TLE26621DWR is validated only for 3.5–15 V operation.
TLE26621DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 3.4V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 625µA (x2 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 3.5 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TLE26621DWR FAQ
1.How can I place an order for TLE26621DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE26621DWR 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 TLE26621DWR reliable?
The price and inventory of TLE26621DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE26621DWR is usually 5 days.
3.What payment methods are accepted for TLE26621DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE26621DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE26621DWR?
TLE26621DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE26621DWR 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 TLE26621DWR?
For technical support, including TLE26621DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE26621DWR requirements.
6.How does Aetrix verify that TLE26621DWR is sourced from the original manufacturer or authorized distributors?
All TLE26621DWR 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 TLE26621DWR meets industry standards.
7.What is the process for return or replacement of TLE26621DWR?
All TLE26621DWR units undergo pre-shipment inspection (PSI). If there is an issue with TLE26621DWR, 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 TLE26621DWR part is unused and in its original packaging.
Return procedure for TLE26621DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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