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Texas Instruments OPA835IDBVT
- Part No.:
- OPA835IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA835IDBVT.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:829
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Product details
Overview
OPA835IDBVT 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 –40°C to +125°C. It serves as a high-speed, low-power ADC driver in portable instrumentation and ultrasonic flow meters.
For engineers reviewing the OPA835IDBVT datasheet, OPA835IDBVT pinout, OPA835IDBVT application, or OPA835IDBVT equivalent, key selection criteria include its 250 µA supply current, 56 MHz unity-gain bandwidth, rail-to-rail output swing, –0.2 V to 3.9 V input voltage range (5 V supply), and integrated power-down mode with 0.5 µA standby current.
Technical Context
The OPA835IDBVT implements a voltage-feedback (VFB) architecture optimized for high-speed, low-power operation across 2.5 V to 5.5 V supplies. Its negative-rail input stage enables signal acquisition down to –0.2 V (vs. VS–), while rail-to-rail output delivers full-swing drive into 40 mA loads.
It features a dedicated active-low Power Down (PD) pin that reduces quiescent current to 0.5 µA typical without requiring external biasing. The device is characterized over –40°C to +125°C and supports fast settling (55 ns to 0.1%) and low distortion (–130 dBc THD at 1 kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V single supply - supports battery-powered systems and industrial rails without level-shifting. |
| Quiescent Current | 250 µA/ch typical - enables multi-channel, always-on signal conditioning in energy-constrained devices. |
| Unity-Gain Bandwidth | 56 MHz at VS = 5 V - provides sufficient small-signal gain margin for driving SAR and ΔΣ ADCs up to 10 MSPS. |
| Slew Rate | 160 V/µs (rise, 2-V step) - ensures faithful reproduction of fast transient signals without slew-induced distortion. |
| Input Voltage Range | –0.2 V to 3.9 V (5-V supply) - accepts inputs below ground, enabling true single-supply interfacing with bipolar sensors. |
| Output Drive | ±40 mA - directly drives 50-Ω transmission lines or ADC input RC networks without external buffers. |
| THD + Noise | 0.00003% (–130 dBc) at 1 kHz - meets high-fidelity audio and precision measurement SNR requirements. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment sensing. |
Pinout & Package
OPA835IDBVT is packaged in a 6-pin SOT-23 (DBV) case measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in portable and high-density systems.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Amplifier output - rail-to-rail capable, drives up to ±40 mA into resistive or capacitive loads. |
| 2 | VS– | Negative supply terminal - reference for input common-mode and output swing; supports 0 V (ground) or negative rails. |
| 3 | VIN+ | Noninverting input - high-impedance node (250 MΩ || pF) with –0.2 V to 3.9 V common-mode range (5 V supply). |
| 4 | VIN– | Inverting input - differential pair input; matched to VIN+ for precision closed-loop gain accuracy. |
| 5 | PD | Power-down control - active-low digital input; pulls quiescent current to 0.5 µA when driven ≤0.7 V. |
| 6 | VS+ | Positive supply terminal - accepts 2.5 V to 5.5 V; internal regulation enables stable performance across voltage variation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 250 µA/ch at 5 V enables >100-hour battery life in continuous-sensing wearable devices. |
| Integrated power-down mode | 0.5 µA standby current with <250 ns wake-up time - ideal for duty-cycled sensor front-ends. |
| Negative-rail input capability | –0.2 V input minimum allows direct connection to transducers with sub-ground offsets (e.g., piezoelectric sensors). |
| Rail-to-rail output | Swings within 13 mV of VS– and 45 mV of VS+ at G = 5 - maximizes dynamic range for 12-bit+ ADCs. |
| Low distortion at high frequency | –70 dBc HD2/–73 dBc HD3 at 1 MHz supports ultrasonic flow meter signal integrity up to 2 MHz bandwidth. |
| Extended temperature range | –40°C to +125°C operation validated per AEC-Q100 stress testing - suitable for engine control and motor drive feedback. |
Applications
| Portable Audio Front-End | Ultrasonic Flow Meter Signal Chain |
|---|---|
|
Use Scenario: Low-noise buffering of MEMS microphone outputs before audio ADC sampling in battery-powered voice recorders. IC Role / Device Role / Timing Role: ADC input buffer with rail-to-rail output swing and 250 µA supply current to extend battery runtime. Use Value: Enables 116.4 dB SNR and –130 dBc THD at 1 kHz, preserving full dynamic range of 24-bit audio converters. |
Use Scenario: Amplifying and conditioning 40–200 kHz burst signals from ultrasonic transducers in industrial flow meters. IC Role / Device Role / Timing Role: High-speed, low-distortion gain stage with 56 MHz bandwidth and fast 55 ns settling to 0.1%. Use Value: Maintains signal fidelity across wide temperature range (–40°C to +125°C) and supports precise time-of-flight measurements. |
| Low-Power SAR ADC Driver | Industrial Sensor Interface |
|
Use Scenario: Driving the switched-capacitor input of 16-bit, 1 MSPS SAR ADCs in portable data loggers. IC Role / Device Role / Timing Role: Fast-settling, low-output-impedance driver (0.028 Ω at 100 kHz) minimizing acquisition error. Use Value: Achieves 55 ns settling to 0.1% with 2-V step, ensuring full accuracy at maximum sample rates without guard-band delays. |
Use Scenario: Conditioning analog outputs from RTDs, thermocouples, or strain gauges in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Precision input amplifier with 113 dB CMRR and ±100 µV max offset for high-common-mode rejection. Use Value: Rejects 60 Hz noise and supply ripple in noisy industrial environments while maintaining DC accuracy over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA365AIDBVR | Higher 50 MHz bandwidth but 5 mA quiescent current - 20× higher power than OPA835IDBVT. | Better for high-precision, line-powered systems where speed outweighs power budget. | Select OPA365AIDBVR only if >30 MHz bandwidth is required and 5 mA IQ is acceptable. |
| LMV793MMX/NOPB | Lower 88 MHz bandwidth, 1.15 mA IQ, rail-to-rail input/output - lacks negative-rail input capability. | Suitable for general-purpose low-voltage signal conditioning but not sub-ground sensor interfaces. | Choose LMV793MMX/NOPB when rail-to-rail input is mandatory and power is secondary to cost. |
Compared with OPA365AIDBVR and LMV793MMX/NOPB, the OPA835IDBVT uniquely balances 56 MHz bandwidth with 250 µA supply current and true negative-rail input - making it the only viable option for battery-powered, high-fidelity sensor front-ends requiring sub-ground signal capture.
Availability
OPA835IDBVT is available at Aetrix Electronics and suitable for portable instrumentation, ultrasonic flow meters, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA835IDBVT 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 chains.
The OPA835IDBVT belongs to TI's OPAx835 family of ultra-low-power, high-speed voltage-feedback amplifiers, designed specifically for battery-operated test equipment, portable medical devices, and industrial sensing where power efficiency and signal fidelity are co-critical.
FAQ
What is the maximum supply voltage for OPA835IDBVT?
The OPA835IDBVT supports a maximum supply voltage of 5.5 V across VS+ to VS–. Absolute maximum ratings specify this limit to prevent permanent damage; operation beyond 5.5 V violates safe operating area constraints and may degrade reliability or cause immediate failure. Always maintain VS+ – VS– ≤ 5.5 V in both single- and dual-supply configurations. The OPA835IDBVT is rated for reliable operation from 2.5 V to 5.5 V.
Does OPA835IDBVT support rail-to-rail input?
No, the OPA835IDBVT does not support rail-to-rail input. It features a negative-rail input stage with a common-mode input range extending to –0.2 V below VS–, but its upper limit is 3.9 V at 5 V supply - not reaching VS+. This design enables sub-ground signal acquisition while optimizing power and speed trade-offs. For full rail-to-rail input, consider alternatives like OPA365AIDBVR, though at significantly higher quiescent current.
How does the power-down mode function on OPA835IDBVT?
The OPA835IDBVT uses an active-low Power Down (PD) pin (Pin 5). When PD is driven ≤0.7 V (relative to VS–), the amplifier enters low-power mode with 0.5 µA typical quiescent current. The pin must be actively driven - floating or high-impedance states are undefined. Wake-up time is 250 ns to 90% of final output, and turnoff delay is 50 ns. This feature enables microsecond-level power gating in duty-cycled sensor systems.
What is the input offset voltage specification for OPA835IDBVT?
The OPA835IDBVT has a maximum input offset voltage of ±500 µV at TA = 25°C, with a typical value of ±100 µV. Over the full –40°C to +125°C range, the maximum expands to ±1850 µV. Its offset voltage drift is ±2.25 µV/°C across that same temperature span. These values are measured under standard conditions (VS = 5 V, RL = 2 kΩ, G = 5) and support precision DC-coupled applications such as sensor amplification where initial calibration compensates for offset.
Can OPA835IDBVT drive a 50-Ω load directly?
Yes, the OPA835IDBVT can drive a 50-Ω load directly, delivering ±40 mA output current. At 5 V supply, its rail-to-rail output swings within 13 mV of VS– and 45 mV of VS+, enabling >4.9 Vpp into 50 Ω with minimal headroom loss. However, sustained 50-Ω loading increases junction temperature; thermal metrics (RθJA = 194°C/W for DBV package) require careful PCB layout with adequate copper pour to maintain operation within –40°C to +125°C ambient limits.
OPA835IDBVT 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
OPA835IDBVT FAQ
1.How can I place an order for OPA835IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA835IDBVT 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 OPA835IDBVT reliable?
The price and inventory of OPA835IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA835IDBVT is usually 5 days.
3.What payment methods are accepted for OPA835IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA835IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA835IDBVT?
OPA835IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA835IDBVT 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 OPA835IDBVT?
For technical support, including OPA835IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA835IDBVT requirements.
6.How does Aetrix verify that OPA835IDBVT is sourced from the original manufacturer or authorized distributors?
All OPA835IDBVT 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 OPA835IDBVT meets industry standards.
7.What is the process for return or replacement of OPA835IDBVT?
All OPA835IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA835IDBVT, 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 OPA835IDBVT part is unused and in its original packaging.
Return procedure for OPA835IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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