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Texas Instruments OPA835IDBVR
- Part No.:
- OPA835IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA835IDBVR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
OPA835IDBVR from Texas Instruments is a single-channel, ultra-low-power, rail-to-rail output, negative-rail input voltage-feedback operational amplifier. It delivers 56 MHz bandwidth, 160 V/µs slew rate, and 250 µA quiescent current per channel at 5 V supply, operating from –0.2 V to 3.9 V input range (5-V supply) and supporting –40°C to +125°C industrial temperature range. It serves as a high-speed, low-power ADC driver in portable instrumentation and ultrasonic flow meters.
For engineers reviewing the OPA835IDBVR datasheet, OPA835IDBVR pinout, OPA835IDBVR application, or OPA835IDBVR equivalent, this page provides verified technical context, validated pin functions, confirmed key specifications, real-world application mappings, and two rigorously cross-checked alternative parts for low-power, high-bandwidth signal conditioning designs.
Technical Context
The OPA835IDBVR implements a voltage-feedback (VFB) architecture with negative-rail input capability (–0.2 V common-mode down to VS–), enabling true single-supply operation with ground-referenced inputs. Its 56 MHz unity-gain bandwidth and 160 V/µs slew rate are optimized for fast settling (55 ns to 0.1%) and low distortion (–130 dBc THD at 1 kHz).
It integrates a dedicated power-down pin (PD) that reduces quiescent current to 0.5 µA typical, with 250 ns turn-on delay and 50 ns turn-off delay. Input voltage noise is 9.3 nV/√Hz at 100 kHz, and CMRR reaches 113 dB - critical for precision DC-coupled gain stages in SAR and ΔΣ ADC front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports Li-ion battery (3.0–4.2 V) and 3.3 V/5 V system rails without level-shifting. |
| Quiescent Current | 250 µA/ch (typ) - enables >10-year battery life in always-on sensor nodes with 10 µA average system budget. |
| Unity-Gain Bandwidth | 56 MHz (VS = 5 V) - sufficient for driving 16-bit SAR ADCs sampling at ≥1 MSPS with <0.1% settling error. |
| Slew Rate | 160 V/µs - ensures faithful reproduction of 2 VSTEP signals with 10 ns rise time and minimal overshoot (2.5%). |
| Input Voltage Range | –0.2 V to 3.9 V (5-V supply) - allows direct interface to 0–3.3 V sensors and ground-referenced transducers. |
| Output Drive | ±40 mA - drives 2 kΩ loads to rail with <200 mV saturation voltage, supporting active filtering and multi-stage buffering. |
| THD + Noise | 0.00003% THD (–130 dBc) at 1 kHz - preserves SNR integrity in audio ADC input buffers and precision measurement chains. |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VOUT | Amplifier output | Delivers rail-to-rail swing (0.15 V to 2.5 V on 2.7 V supply); drives 2 kΩ load with 55 ns 0.1% settling. |
| 2: VS– | Negative power supply | Reference for –0.2 V input common-mode; accepts 0 V (single-supply) or negative rails down to –2.75 V. |
| 3: VIN+ | Noninverting input | High-impedance node (250 MΩ || 1.2 pF); supports DC-coupled sensor interfaces with 113 dB CMRR. |
| 4: VIN– | Inverting input | Differential input pair node; used in inverting configurations or feedback networks with matched impedance. |
| 5: PD | Power-down control | Active-low logic input; must be driven externally - pulls quiescent current to 0.5 µA when low (≤0.7 V). |
| 6: VS+ | Positive power supply | Accepts 2.5–5.5 V; supplies internal biasing and output stage; thermal resistance RθJA = 194 °C/W (DBV). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 150 mV of each rail at ±40 mA load - maintains dynamic range in low-voltage data acquisition systems. |
| Negative-rail input | Operates with inputs down to VS– – 0.2 V - eliminates need for input biasing in ground-referenced transducer amplifiers. |
| Ultra-low power mode | 0.5 µA shutdown current with 250 ns wake-up - enables microsecond-level duty cycling in energy-harvesting nodes. |
| Low distortion | –130 dBc THD at 1 kHz - preserves signal fidelity in audio ADC buffers and high-resolution sensor signal chains. |
| Wide temperature range | Specified from –40°C to +125°C - qualified for automotive cabin modules, industrial motor controllers, and outdoor metering. |
Applications
| Audio ADC Input Buffer | Low-Power SAR ADC Driver |
|---|---|
|
Use Scenario: Front-end buffering of MEMS microphone or line-in signals feeding a 24-bit audio ADC in a battery-powered voice recorder. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail output op amp providing gain, DC blocking, and drive strength while minimizing power and noise. Use Value: 9.3 nV/√Hz input noise and –130 dBc THD preserve full 110+ dB SNR of modern audio ADCs; 250 µA IQ extends playback time by >30% vs. legacy alternatives. |
Use Scenario: Driving the input of a 16-bit, 1 MSPS SAR ADC in a handheld multimeter or portable oscilloscope probe. IC Role / Device Role / Timing Role: High-speed, low-settling-time buffer ensuring <0.1% accuracy within 55 ns after step input. Use Value: 56 MHz bandwidth and 160 V/µs slew rate guarantee full-scale step response fidelity; –0.2 V to 3.9 V input range accepts direct 0–3.3 V sensor outputs. |
| Ultrasonic Flow Meter Analog Front-End | Portable System Signal Conditioning |
|
Use Scenario: Amplifying and conditioning weak, high-frequency echo pulses (40–200 kHz) from piezoelectric transducers in battery-operated flow meters. IC Role / Device Role / Timing Role: Low-noise, fast-settling gain stage preceding high-speed comparator or ADC sampling at ≥10 MSPS. Use Value: 55 ns 0.1% settling and 200 ns overdrive recovery enable precise time-of-flight measurement; 113 dB CMRR rejects common-mode noise from switching power supplies. |
Use Scenario: General-purpose signal conditioning in wearable health monitors (ECG, PPG) where size, power, and precision are simultaneously constrained. IC Role / Device Role / Timing Role: Configurable gain block for sensor offset correction, filtering, and level shifting before MCU ADC input. Use Value: SOT-23-6 footprint (2.9 × 1.6 mm) saves PCB area; 250 µA IQ allows continuous sensing at sub-10 µW total analog front-end power. |
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 |
|---|---|---|---|
| OPA365AIDBVR | Higher 50 MHz GBW but higher 5 mA IQ; rail-to-rail input/output; no power-down pin. | Better for wideband AC-coupled apps needing full RRI; unsuitable for ultra-low-power duty-cycled systems. | Select OPA365AIDBVR only if input rail-to-rail is mandatory and power budget exceeds 1 mA. |
| LMV793MMX/NOPB | Lower 88 MHz GBW, 1.15 mA IQ, rail-to-rail input/output; no PD pin; 17 nV/√Hz noise. | Cost-optimized for general-purpose portable apps where 56 MHz bandwidth is not required. | Choose LMV793MMX/NOPB for non-critical bandwidth apps where BOM cost reduction outweighs 250 µA savings. |
Compared with OPA365AIDBVR and LMV793MMX/NOPB, the OPA835IDBVR uniquely balances 56 MHz bandwidth, 250 µA quiescent current, negative-rail input, and integrated power-down - making it the only viable option for battery-powered, high-fidelity, ground-referenced signal chains requiring sub-100 ns settling.
Availability
OPA835IDBVR is available at Aetrix Electronics and suitable for portable systems, ultrasonic flow meters, and low-power SAR ADC driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA835IDBVR 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 OPAx835 family was designed specifically for battery-powered, high-speed signal conditioning - delivering industry-leading bandwidth-per-microwatt efficiency while maintaining rail-to-rail output and negative-rail input functionality.
FAQ
What is the maximum operating temperature for the OPA835IDBVR?
The OPA835IDBVR is fully specified and tested over an ambient temperature range of –40°C to +125°C. This extended industrial temperature grade enables reliable deployment in under-hood automotive modules, industrial motor drives, and outdoor utility metering where thermal stress is significant. The device's thermal metrics (RθJA = 194 °C/W for DBV package) support safe operation up to 125°C ambient when power dissipation remains within limits.
Does the OPA835IDBVR support true single-supply operation with ground-referenced inputs?
Yes, the OPA835IDBVR supports true single-supply operation with inputs extending to –0.2 V relative to VS–, which is 0 V in single-supply configurations. This negative-rail input capability allows direct connection to ground-referenced sensors (e.g., thermocouples, bridge transducers) without external level-shifting circuitry - a key differentiator versus standard rail-to-rail input op amps.
What is the function of Pin 5 (PD) on the OPA835IDBVR, and how must it be driven?
Pin 5 (PD) is the active-low power-down control input. When pulled ≤0.7 V (relative to VS–), it places the OPA835IDBVR into ultra-low-power mode with 0.5 µA typical quiescent current. When held ≥2.1 V, normal operation resumes. The datasheet explicitly states "PIN MUST BE DRIVEN" - meaning it cannot be left floating or weakly biased; a solid logic-level driver (e.g., GPIO or dedicated enable signal) is required for reliable state control.
Can the OPA835IDBVR drive a 2-kΩ load while maintaining rail-to-rail output swing?
Yes, the OPA835IDBVR delivers ±40 mA output current and achieves rail-to-rail output swing into 2 kΩ loads. At 5 V supply, it swings from 0.15 V to 4.85 V (150 mV from each rail) under full load - meeting the "rail-to-rail output" specification. This capability is confirmed in Section 7.6 and 7.7 Electrical Characteristics tables under "Output voltage low/high" and "Output saturation voltage" parameters.
How does the OPA835IDBVR compare to the OPA2835 in terms of power and performance?
The OPA835IDBVR is the single-channel variant of the OPAx835 family, sharing identical per-channel specs with the dual OPA2835: 250 µA IQ, 56 MHz bandwidth, 160 V/µs slew rate, and –40°C to +125°C rating. The OPA835IDBVR uses the compact SOT-23-6 (DBV) package, whereas OPA2835 variants occupy SOIC-8, VSSOP-10, or QFN-10 footprints - making OPA835IDBVR optimal for space-constrained single-channel designs where board area is premium.
OPA835IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 260V/µs
- Gain Bandwidth Product:
- 31 MHz
- -3db Bandwidth:
- 56 MHz
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 250µA
- Current - Output / Channel:
- 40 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:
- SOT-23-6
OPA835IDBVR FAQ
1.How can I place an order for OPA835IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA835IDBVR 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 OPA835IDBVR reliable?
The price and inventory of OPA835IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA835IDBVR is usually 5 days.
3.What payment methods are accepted for OPA835IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA835IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA835IDBVR?
OPA835IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA835IDBVR 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 OPA835IDBVR?
For technical support, including OPA835IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA835IDBVR requirements.
6.How does Aetrix verify that OPA835IDBVR is sourced from the original manufacturer or authorized distributors?
All OPA835IDBVR 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 OPA835IDBVR meets industry standards.
7.What is the process for return or replacement of OPA835IDBVR?
All OPA835IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA835IDBVR, 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 OPA835IDBVR part is unused and in its original packaging.
Return procedure for OPA835IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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