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Texas Instruments OPA189IDBVT
- Part No.:
- OPA189IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA189IDBVT.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:25,981
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Product details
Overview
OPA189IDBVT from Texas Instruments is a single-channel, zero-drift, rail-to-rail output operational amplifier optimized for precision instrumentation and multiplexed analog signal conditioning. It delivers 3 μV maximum input offset voltage, 0.005 μV/°C drift, 5.2 nV/√Hz input voltage noise at 1 kHz, 14-MHz gain bandwidth, and MUX-friendly inputs that prevent inrush current during channel switching - enabling high-accuracy battery test systems and weigh-scale front-ends.
For engineers reviewing the OPA189IDBVT datasheet, OPA189IDBVT pinout, OPA189IDBVT application, or OPA189IDBVT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SOT-23-5 pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The OPA189IDBVT employs auto-zeroing architecture to achieve ultra-low drift and offset, with internal chopper-stabilized circuitry operating at >1 MHz to suppress low-frequency noise without introducing switching artifacts. Its MUX-friendly input stage eliminates anti-parallel diodes, maintaining high input impedance (>60 TΩ common-mode) even under large differential transients - critical for multichannel data acquisition where source loading must be avoided.
It operates from ±2.25 V to ±18 V (4.5 V to 36 V single-supply), supports rail-to-rail output swing within 15 mV of rails (no load), and features robust ESD protection (±4 kV HBM). The device is fully specified over –40°C to +125°C and exhibits no phase reversal under overload conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±3 µV max - enables sub-10 ppm accuracy in 16-bit+ measurement systems without calibration. |
| Offset Drift | ±0.005 µV/°C - ensures <1 µV total drift over full industrial temperature range (–40°C to +125°C). |
| Input Voltage Noise | 5.2 nV/√Hz at 1 kHz - preserves SNR in precision sensor interfaces (e.g., bridge sensors, thermocouples). |
| Gain Bandwidth | 14 MHz - supports fast settling (1.1 µs to 0.01%) in active filtering and high-speed data acquisition. |
| Slew Rate | 20 V/µs - allows clean amplification of 10-V step signals without distortion in power supply monitoring. |
| CMRR | 168 dB - rejects common-mode interference in noisy industrial environments (e.g., motor drives, PLC I/O). |
| Supply Range | 4.5 V to 36 V - compatible with both low-voltage portable equipment and high-voltage industrial DC supplies. |
Pinout & Package
OPA189IDBVT is packaged in a 5-pin SOT-23 (DBV) case measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in portable test gear and modular I/O systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Rail-to-rail output capable of sourcing/sinking ≥65 mA; settles to 0.01% in 1.1 µs for 10-V steps. |
| 2 - V– | Negative Supply | Connects to lowest system potential; supports dual-supply (±2.25 V to ±18 V) or single-supply operation. |
| 3 - +IN | Noninverting Input | High-impedance node (>60 TΩ); accepts signals down to V– – 0.1 V - enables true rail-to-rail input capability. |
| 4 - –IN | Inverting Input | MUX-friendly architecture prevents current injection during input switching - avoids settling errors in multiplexed sensor arrays. |
| 5 - V+ | Positive Supply | Accepts up to +36 V; PSRR of 168 dB minimizes supply ripple coupling into precision output signals. |
Key Features
| Feature | Design Value |
|---|---|
| MUX-friendly inputs | No anti-parallel diodes - eliminates input current spikes during channel switching, preserving R-C settling integrity in multichannel DAQ. |
| Zero-drift architecture | 0.005 µV/°C max drift - eliminates thermal-induced baseline drift in long-duration measurements (e.g., battery leakage testing). |
| Rail-to-rail output | Swings within 15 mV of supply rails (no load) - maximizes dynamic range in low-voltage systems (e.g., 3.3-V microcontroller ADC interfaces). |
| Ultra-low 1/f noise | 0.1 µVPP (0.1–10 Hz) - critical for DC-coupled applications like weigh scales and strain-gauge bridges where low-frequency stability is essential. |
| RFI/EMI filtered inputs | Integrated input filtering suppresses high-frequency interference from switching regulators and RF sources - improves immunity in industrial enclosures. |
Applications
| Battery Test Systems | Analog Input Modules |
|---|---|
Use Scenario: Precision measurement of open-circuit voltage, internal resistance, and charge/discharge current in Li-ion and lead-acid battery characterization. IC Role / Device Role / Timing Role: Front-end amplifier for shunt-based current sensing and high-impedance voltage monitoring with sub-µV offset stability. Use Value: Enables <100 ppm accuracy over temperature without recalibration, reducing test time and improving repeatability in automated test equipment. |
Use Scenario: Signal conditioning for multi-channel industrial I/O modules accepting 4–20 mA, ±10 V, and thermocouple inputs. IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) input stage with MUX-friendly inputs for sequential sensor scanning. Use Value: Eliminates channel crosstalk and settling delays caused by conventional op-amp input diode clamps - increases scan rate by >3× in 16-channel systems. |
| Weigh Scales | DC Power Supplies |
Use Scenario: Amplifying low-level mV outputs from precision load cells and strain gauges in platform and benchtop weighing instruments. IC Role / Device Role / Timing Role: Instrumentation-grade signal conditioner with ultra-low 1/f noise and zero-drift for stable DC gain. Use Value: Achieves <0.001% linearity error and <1 LSB drift over 8-hour thermal soak - meets OIML R76 Class III requirements. |
Use Scenario: Voltage and current sense amplification in programmable DC power supplies and electronic loads requiring <0.1% regulation accuracy. IC Role / Device Role / Timing Role: High-speed feedback amplifier in closed-loop control paths with 14-MHz bandwidth and 20 V/µs slew rate. Use Value: Supports fast transient response (<10 µs recovery) and low-noise sensing for <50 µV RMS output ripple specification compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA388IDBVR | Lower supply range (5.5 V max), 7 nV/√Hz noise, 10-MHz GBW, 5-µV max offset - less suitable for 36-V industrial supplies. | Optimized for low-voltage, battery-powered instrumentation; lacks MUX-friendly inputs and full –40°C to +125°C rating. | Choose when operating below 5.5 V and prioritizing ultra-low quiescent current (0.95 mA) over wide supply and MUX robustness. |
| OPA192IDBVT | e-Trim CMOS process (not auto-zero); 25-µV offset, 0.8 µV/°C drift, 10-MHz GBW, 1-mA IQ - higher drift and noise than OPA189IDBVT. | Targeted at general-purpose industrial amplification where moderate precision suffices; no MUX-friendly architecture. | Choose when cost sensitivity outweighs ultra-low drift requirements and MUX switching is not used in the signal path. |
Compared with OPA388IDBVR and OPA192IDBVT, the OPA189IDBVT uniquely combines 36-V operation, 0.005 µV/°C drift, MUX-friendly inputs, and 5.2-nV/√Hz noise - making it the only option among the three qualified for high-accuracy, high-channel-count, wide-temperature industrial DAQ.
Availability
OPA189IDBVT is available at Aetrix Electronics and suitable for battery test systems, analog input modules, weigh scales, and DC power supply feedback loops requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA189IDBVT 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 precision signal chain solutions.
The OPAx189 family was designed specifically for high-accuracy, low-drift, multiplexed analog front-ends in industrial test equipment, process control, and precision measurement - emphasizing MUX compatibility, rail-to-rail operation, and robustness across –40°C to +125°C.
FAQ
What is the maximum supply voltage for OPA189IDBVT?
The OPA189IDBVT supports a maximum supply voltage of 40 V (single-supply) or ±20 V (dual-supply), with recommended operation from 4.5 V to 36 V. Absolute maximum ratings define safe handling limits, but sustained operation above 36 V risks reliability degradation. The device maintains full performance across its entire recommended range, including at 36 V.
Does OPA189IDBVT support true rail-to-rail input operation?
OPA189IDBVT supports rail-to-rail output but not true rail-to-rail input: its common-mode input voltage range extends from (V–) – 0.1 V to (V+) – 2.5 V. This allows the noninverting input to accept signals down to the negative rail, but the upper limit stops 2.5 V below the positive rail - sufficient for most precision sensor interfaces where signal swings remain within this bound.
How does the MUX-friendly input architecture of OPA189IDBVT improve multichannel system performance?
The OPA189IDBVT's MUX-friendly inputs eliminate anti-parallel diodes found in conventional op-amps, preventing inrush current when large differential voltages are applied during channel switching. This preserves source impedance integrity and reduces settling time by >50% compared to standard amplifiers - directly improving throughput and accuracy in multiplexed data acquisition systems using the OPA189IDBVT.
What is the typical 0.1-Hz to 10-Hz noise performance of OPA189IDBVT?
The OPA189IDBVT delivers 0.1 µVPP integrated noise over the 0.1-Hz to 10-Hz band - a key metric for DC and low-frequency precision applications such as weigh scales and thermocouple amplification. This value is measured under standard conditions (TA = 25°C, VS = ±18 V) and remains stable across temperature, supporting high-resolution, drift-free measurements.
Is OPA189IDBVT qualified for operation at +125°C?
Yes, OPA189IDBVT is fully specified and tested over the extended industrial temperature range of –40°C to +125°C. All key parameters - including offset voltage, drift, CMRR, and gain bandwidth - are guaranteed across this range per the official Texas Instruments SBOS830I datasheet, making it suitable for under-hood automotive, industrial motor control, and high-ambient-temperature instrumentation.
OPA189IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 14 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 0.4 µV
- Current - Supply:
- 1.3mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA189IDBVT FAQ
1.How can I place an order for OPA189IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA189IDBVT 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 OPA189IDBVT reliable?
The price and inventory of OPA189IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA189IDBVT is usually 5 days.
3.What payment methods are accepted for OPA189IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA189IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA189IDBVT?
OPA189IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA189IDBVT 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 OPA189IDBVT?
For technical support, including OPA189IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA189IDBVT requirements.
6.How does Aetrix verify that OPA189IDBVT is sourced from the original manufacturer or authorized distributors?
All OPA189IDBVT 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 OPA189IDBVT meets industry standards.
7.What is the process for return or replacement of OPA189IDBVT?
All OPA189IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA189IDBVT, 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 OPA189IDBVT part is unused and in its original packaging.
Return procedure for OPA189IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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