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Texas Instruments OPA836IRUNR
- Part No.:
- OPA836IRUNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFQFN
- Datasheet:
-
OPA836IRUNR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 10WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
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Product details
Overview
OPA836IRUNR from Texas Instruments is a single-channel, ultra-low-power, rail-to-rail output, negative-rail input voltage-feedback operational amplifier. It delivers 205 MHz bandwidth, 560 V/µs slew rate, and 1 mA quiescent current at 5 V supply, operating from –40°C to +125°C. It is designed for high-frequency signal conditioning in portable, battery-powered systems requiring minimal power and compact layout.
For engineers reviewing the OPA836IRUNR datasheet, OPA836IRUNR pinout, OPA836IRUNR application, or OPA836IRUNR equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's official OPAx836 production data sheet (SLOS712J, March 2021).
Technical Context
The OPA836IRUNR implements a voltage-feedback architecture with integrated gain-setting resistors (FB1–FB4) enabling 16 discrete gain configurations via PCB trace routing. Its negative-rail input stage supports common-mode voltages down to –0.2 V (with 5-V supply), while rail-to-rail output delivers ±45 mA drive into 1-kΩ load.
It features dual operating modes: normal operation (PD ≥ VS– + 2.1 V) and ultra-low-power shutdown (PD ≤ VS– + 0.7 V), reducing quiescent current to 0.5 µA typical. Thermal performance is optimized for the 2.00 mm × 2.00 mm WQFN-10 (RUN) package, with RθJA = 145.8°C/W and ψJB = 104.5°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 205 MHz at G = 1 (5 V supply); enables high-fidelity amplification of signals up to ~100 MHz without gain peaking. |
| Slew Rate | 560 V/µs (rise), 580 V/µs (fall) at G = 2; supports clean 2-V step response in <3 ns with <7.5% overshoot. |
| Quiescent Current | 1 mA typical per channel at 25°C; allows continuous operation in 10-year battery-powered devices drawing <10 µA average when power-down is cycled. |
| Input Voltage Noise | 4.6 nV/√Hz at 100 kHz; preserves SNR in precision ADC driver stages where noise floor dominates dynamic range. |
| Power-Down Current | 0.5 µA typical; reduces system standby power by >99.9% versus active mode, critical for intermittent-sampling architectures. |
| CMRR | 116 dB minimum; rejects >200,000:1 common-mode interference in single-supply sensor front-ends. |
| Operating Temp | –40°C to +125°C; qualified for under-hood automotive, industrial motor control, and extended-range portable instrumentation. |
Pinout & Package
The OPA836IRUNR is packaged in a 10-pin WQFN (RUN) with 0.5-mm pitch and 2.00 mm × 2.00 mm body size, optimized for high-density PCB layouts and thermal dissipation via exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Noninverting input | Accepts input signals from –0.2 V to +3.9 V (5-V supply); supports true negative-rail input operation. |
| VIN– | Inverting input | Differential node for feedback networks; high-impedance (100 MΩ || 1.2 pF common-mode) minimizes loading on source. |
| VOUT | Amplifier output | Rail-to-rail swing (0.15 V to 2.5 V at G = 5, 5-V supply); drives 50 mA into resistive loads or 1000-pF capacitive loads stably. |
| VS+ | Positive supply | Accepts 2.5 V to 5.5 V single supply; internal biasing ensures full functionality across entire range. |
| VS– | Negative supply / ground reference | Reference for power and signal; enables operation with input below ground (e.g., transducer outputs). |
| PD | Power-down control | Active-low digital enable; must be driven (not floating); transitions amplifier between 1 mA and 0.5 µA states in ≤200 ns. |
| FB1–FB4 | Gain-setting resistor nodes | Four internal precision resistors (1.6 kΩ, 1.2 kΩ, 0.6 kΩ) allow 16 fixed gains (e.g., +1, –3, +4, –7) via external PCB traces - no external components required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated gain-setting resistors | Four laser-trimmed thin-film resistors (±1% tolerance, <10 ppm/°C TC) enable footprint-minimized gain configuration without external parts. |
| Rail-to-rail output with high drive | Swings within 150 mV of rails while sourcing/sinking ±45 mA - eliminates level-shifting in 3.3-V/5-V mixed-signal systems. |
| Negative-rail input stage | Operates with VIN as low as –0.2 V (5-V supply), supporting direct interfacing to bipolar sensors and AC-coupled sources. |
| Ultra-low-power shutdown | Reduces supply current to 0.5 µA typical while preserving state; enables microsecond-scale wake-up for event-triggered sampling. |
| High-speed settling | 22 ns to 0.1% for 2-V step (G = 2, 5-V supply); meets timing budgets for 20-MSPS SAR ADC drivers with minimal latency. |
Applications
| Portable Audio Front-End | Low-Power SAR ADC Driver |
|---|---|
Use Scenario: Battery-powered voice recorder with MEMS microphone and 16-bit SAR ADC sampling at 1 MSPS. IC Role / Device Role / Timing Role: Single-supply input buffer and gain stage driving ADC reference and input pins with rail-to-rail swing and sub-25 ns settling. Use Value: Enables 10+ hour runtime using coin-cell battery by combining 1 mA active current, 0.5 µA shutdown, and no external gain components. |
Use Scenario: Industrial temperature sensor node using thermistor bridge and 18-bit SAR ADC with programmable gain. IC Role / Device Role / Timing Role: Precision, low-noise amplifier with selectable gain (e.g., +4 or –3) configured via PCB traces to match sensor output range. Use Value: Eliminates external op-amp + resistor network, reducing BOM count by 4 parts and PCB area by >3 mm² per channel. |
| High-Density Sensor Hub | Automotive Cabin Microphone Array |
Use Scenario: Wearable health monitor integrating ECG, PPG, and motion sensors on a 12 mm × 12 mm PCB. IC Role / Device Role / Timing Role: Multi-channel signal conditioner with shared power-down control synchronizing analog front-end sleep across sensors. Use Value: 2.00 mm × 2.00 mm WQFN package and integrated resistors allow 4-channel buffering in <16 mm² total area - 40% smaller than discrete solutions. |
Use Scenario: In-cabin noise cancellation system requiring 8-channel analog mic preamps operating from 5-V vehicle bus. IC Role / Device Role / Timing Role: High-SNR, low-distortion amplifier (THD = –130 dBc, HD2/HD3 = –85/–105 dBc) driving differential ADC inputs. Use Value: –40°C to +125°C qualification and 116 dB CMRR ensure stable performance across cabin temperature swings and EMI-rich environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA835IRUNR | Lower 30 MHz bandwidth, 110 V/µs slew rate, 0.25 mA IQ; same RUN package and gain-resistor architecture. | Better suited for <10 MHz signal paths where ultra-low power (<250 µA) outweighs speed requirements. | Select OPA835IRUNR when bandwidth demand is ≤30 MHz and battery life is prioritized over settling time or harmonic distortion. |
| LMH6619MMX/NOPB | 140 MHz bandwidth, 45 V/µs slew rate, 1.25 mA IQ, rail-to-rail input/output; SOIC-8 or VSSOP-8 only, no integrated resistors. | Requires external gain-setting resistors and occupies >2× PCB area; higher THD (–100 dBc) limits audio fidelity. | Choose LMH6619MMX/NOPB only if legacy SOIC layout reuse is mandatory and integrated gain resistors are unnecessary. |
Compared with OPA836IRUNR, OPA835IRUNR trades 85% bandwidth for 75% lower quiescent current, while LMH6619MMX/NOPB offers rail-to-rail input but lacks gain integration and thermal efficiency - making OPA836IRUNR the optimal balance of speed, power, and miniaturization for new designs.
Availability
OPA836IRUNR is available at Aetrix Electronics and suitable for portable audio front-ends, low-power SAR ADC driver circuits, and high-density sensor hubs requiring stable component supply across automotive, industrial, and medical product lifecycles.
Supply support for OPA836IRUNR 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 high-performance op-amps and precision signal chain solutions.
The OPAx836 family was engineered specifically for battery-constrained, high-bandwidth applications - delivering industry-leading 205 MHz unity-gain bandwidth at just 1 mA, enabling next-generation portable instrumentation and sensor interfaces.
FAQ
What is the package type and footprint of OPA836IRUNR?
The OPA836IRUNR uses a 10-pin WQFN package (RUN variant) with 2.00 mm × 2.00 mm body size and 0.5-mm pitch. It features an exposed thermal pad and integrates four precision gain-setting resistors (FB1–FB4), enabling compact PCB layouts without external feedback components. This differs from the SOT-23-6 OPA836DBVR variant and is not pin-compatible with SOIC or VSSOP packages.
Does OPA836IRUNR support true rail-to-rail input operation?
No - the OPA836IRUNR features a negative-rail input stage (accepting VIN down to –0.2 V with 5-V supply) and rail-to-rail output, but its input common-mode range does not extend to the positive rail. At 5-V supply, maximum input is +3.9 V. For full rail-to-rail input, consider alternatives like OPA365 or LMV721, though they lack the OPA836IRUNR's 205 MHz bandwidth and integrated gain resistors.
How does the power-down function work on OPA836IRUNR?
The PD pin on OPA836IRUNR is an active-low digital control: driving it below VS– + 0.7 V places the amplifier in ultra-low-power shutdown (0.5 µA typical), while pulling it above VS– + 2.1 V restores normal operation (1 mA typical). The pin must be actively driven - leaving it floating may cause undefined behavior. Turn-on delay is 200 ns; turn-off delay is 25 ns.
What gain configurations are possible using the integrated resistors in OPA836IRUNR?
The OPA836IRUNR includes four internal thin-film resistors (FB1–FB4) forming a 1.6 kΩ–1.2 kΩ–0.6 kΩ ladder. By routing PCB traces between these nodes, 16 fixed gains are achievable: non-inverting (+1, +2, +2.33, +4, +5, +6.33, +8) and inverting (–1, –1.33, –3, –4, –5.33, –7) plus inverting attenuations (–0.1429 to –0.75). Table 9-1 in TI's SLOS712J datasheet lists all valid configurations.
Is OPA836IRUNR suitable for driving ADC inputs in high-resolution data acquisition systems?
Yes - the OPA836IRUNR is explicitly characterized for SAR and ΔΣ ADC driver applications. With 4.6 nV/√Hz input voltage noise, –130 dBc THD at 1 kHz, 22 ns 0.1% settling time (2-V step), and ±45 mA output drive, it maintains ENOB >16 bits for 1 MSPS+ sampling when paired with 16–18-bit ADCs. Its –40°C to +125°C rating further supports industrial-grade DAQ deployments.
OPA836IRUNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 580V/µs
- Gain Bandwidth Product:
- 118 MHz
- -3db Bandwidth:
- 205 MHz
- Current - Input Bias:
- 650 nA
- Voltage - Input Offset:
- 65 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WQFN (2x2)
OPA836IRUNR FAQ
1.How can I place an order for OPA836IRUNR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA836IRUNR 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 OPA836IRUNR reliable?
The price and inventory of OPA836IRUNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA836IRUNR is usually 5 days.
3.What payment methods are accepted for OPA836IRUNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA836IRUNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA836IRUNR?
OPA836IRUNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA836IRUNR 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 OPA836IRUNR?
For technical support, including OPA836IRUNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA836IRUNR requirements.
6.How does Aetrix verify that OPA836IRUNR is sourced from the original manufacturer or authorized distributors?
All OPA836IRUNR 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 OPA836IRUNR meets industry standards.
7.What is the process for return or replacement of OPA836IRUNR?
All OPA836IRUNR units undergo pre-shipment inspection (PSI). If there is an issue with OPA836IRUNR, 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 OPA836IRUNR part is unused and in its original packaging.
Return procedure for OPA836IRUNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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