My Inquiry
My Account
Texas Instruments OPA4189IDR
- Part No.:
- OPA4189IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4189IDR.pdf
- Description:
- QUAD, 14-MHZ, MUX-FRIENDLY, ZERO
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA4189IDR from Texas Instruments is a quad, zero-drift, rail-to-rail output operational amplifier optimized for precision instrumentation and multiplexed analog signal conditioning. It delivers 3 μV max input offset voltage, 0.005 μV/°C drift, 14 MHz gain bandwidth, 20 V/µs slew rate, and MUX-friendly inputs that prevent inrush current during channel switching - enabling high-accuracy DC-coupled measurements in battery test systems and weigh scale front-ends.
For engineers reviewing the OPA4189IDR datasheet, OPA4189IDR pinout, OPA4189IDR application, or OPA4189IDR equivalent, this page provides verified specifications, package mapping to SOIC-14, confirmed quad-channel pin functions, thermal metrics (RθJA = 73.4°C/W), and two validated alternative parts with documented parameter differences for precision analog design.
Technical Context
The OPA4189IDR implements a chopper-stabilized architecture with auto-zeroing to achieve ultra-low drift and offset, supported by RFI/EMI-filtered inputs and robust ESD protection (±4 kV HBM). Its MUX-friendly input stage eliminates anti-parallel diodes, maintaining high input impedance (>60 TΩ || 1.7 pF) and preventing source loading during large differential voltage transitions across channels.
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 sustains 170 dB open-loop gain and 168 dB CMRR at ±18 V - making it suitable for high-resolution sigma-delta ADC driver stages and active filtering in industrial analog input modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±3 µV max - enables sub-16-bit DC accuracy without calibration in 24-bit weigh scale systems |
| Offset Drift | ±0.005 µV/°C - ensures <1 µV total drift over –40°C to +125°C, critical for unattended battery test equipment |
| Gain Bandwidth | 14 MHz - supports stable closed-loop operation up to 100 kHz with G ≥ 100 for anti-aliasing filter design |
| Slew Rate | 20 V/µs - settles 10-V step to 0.01% in 1.1 µs, essential for fast multiplexed sensor acquisition |
| CMRR | 168 dB at ±18 V - rejects >99.9999% of common-mode noise in bridge sensor interfaces |
| Supply Range | ±2.25 V to ±18 V - compatible with both low-voltage portable test gear and industrial 24-V PLC analog I/O |
| Quiescent Current | 1.7 mA per amplifier - allows four-channel precision amplification within 7 mA total, suitable for power-constrained DAQ modules |
Pinout & Package
OPA4189IDR is packaged in a 14-pin SOIC (D) body measuring 8.65 mm × 3.91 mm, with exposed pad not present and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, drives 10-kΩ loads to within 20 mV of supply rails |
| 2 | –IN A | Inverting input channel A - MUX-friendly, no internal clamping diodes, supports ±20-V differential input |
| 3 | +IN A | Noninverting input channel A - high common-mode range (V– – 0.1 V to V+ – 2.5 V) |
| 4 | V+ | Positive supply - accepts up to +36 V in single-supply mode or +18 V in dual-supply configuration |
| 5 | +IN B | Noninverting input channel B - electrically isolated from other channels; enables independent gain setting per channel |
| 6 | –IN B | Inverting input channel B - identical MUX-friendly behavior as Pin 2, prevents crosstalk-induced settling errors |
| 7 | OUT B | Amplifier B output - fully independent output stage, supports simultaneous sourcing/sinking up to ±65 mA |
| 8 | OUT C | Amplifier C output - shares same thermal and supply rejection characteristics as OUT A/B/D |
| 9 | –IN C | Inverting input channel C - validated for ≤15 nA input bias current over full temperature range |
| 10 | +IN C | Noninverting input channel C - matched input impedance (60 TΩ || 1.7 pF) with other channels |
| 11 | V– | Negative supply - connects to ground in single-supply or –18 V in dual-supply; supports input down to V– |
| 12 | +IN D | Noninverting input channel D - enables four-channel synchronous sampling in analog input modules |
| 13 | –IN D | Inverting input channel D - maintains <0.1 µVPP 0.1-Hz to 10-Hz noise when used with low-noise sensors |
| 14 | OUT D | Amplifier D output - specified for 1.1 µs 0.01% settling on 10-V step, matching all other outputs |
Key Features
| Feature | Design Value |
|---|---|
| MUX-friendly input architecture | Eliminates anti-parallel diodes to prevent source loading and ensure consistent settling in multichannel data acquisition |
| Rail-to-rail output swing | Delivers full dynamic range to ADCs - output reaches within 15 mV of supply rails under no load |
| Zero-drift chopper stabilization | Guarantees <1 µV total offset drift over –40°C to +125°C, reducing system-level calibration frequency |
| RFI/EMI filtered inputs | Integrates on-chip filtering to suppress >100-MHz interference without external components in noisy industrial environments |
| High open-loop gain (170 dB) | Enables precise closed-loop gain accuracy (<0.001% error) even with 100-kΩ feedback networks |
Applications
| Battery Test System | Analog Input Module |
|---|---|
Use Scenario: Precision voltage and current measurement during charge/discharge cycling of Li-ion cells under thermal stress. IC Role / Device Role / Timing Role: Quad-channel front-end amplifier driving 24-bit delta-sigma ADCs, one channel per cell string. Use Value: 0.005 µV/°C drift ensures <0.1 mV measurement error over –20°C to +70°C ambient, eliminating recalibration between cycles. | Use Scenario: Isolated, programmable-gain analog input for PLC backplanes accepting 0–10 V, ±10 V, and 4–20 mA signals. IC Role / Device Role / Timing Role: Signal conditioning stage providing gain, filtering, and level-shifting before isolation and digitization. Use Value: 14-MHz GBW and 20-V/µs slew rate support 100-kHz anti-aliasing filter cutoff while preserving transient fidelity. |
| Weigh Scale Front-End | DC Power Supply Monitor |
Use Scenario: Amplifying low-level mV outputs from strain-gauge bridges in platform scales and industrial load cells. IC Role / Device Role / Timing Role: Instrumentation-grade buffer and gain stage with matched input pairs for common-mode rejection. Use Value: 168-dB CMRR and 3-µV offset enable 1:100,000 resolution (0.001% FS) without trimming, meeting OIML Class III requirements. | Use Scenario: Real-time sensing of output voltage and current in programmable DC power supplies and electronic loads. IC Role / Device Role / Timing Role: High-speed, low-drift amplifier feeding ADCs in closed-loop regulation and protection circuits. Use Value: Fast 1.1-µs settling to 0.01% ensures accurate 100-kSPS sampling of transient events like overcurrent shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182IDR | Lower noise (5.5 nV/√Hz vs 5.2 nV/√Hz), higher offset (12 µV max), no MUX-friendly inputs | Lacks inrush-current immunity - unsuitable for multiplexed sensor arrays requiring fast settling | Select when ultra-low noise dominates over MUX compatibility and drift performance is secondary |
| LTC6090CGN-4#PBF | Higher supply range (±70 V), higher quiescent current (1.9 mA), lower GBW (10 MHz), no zero-drift architecture | Superior high-voltage capability but 10× higher offset drift (0.5 µV/°C) limits DC precision | Select only for bipolar ±60-V signal conditioning where drift tolerance exceeds ±10 µV over temperature |
Compared with OPA4189IDR, OPA4182IDR trades MUX-friendliness and ultra-low drift for marginally lower noise, while LTC6090CGN-4#PBF sacrifices DC precision for extreme supply voltage range - neither matches the OPA4189IDR's combination of 0.005 µV/°C drift, 14-MHz bandwidth, and true MUX-safe inputs in a quad SOIC package.
Availability
OPA4189IDR is available at Aetrix Electronics and suitable for battery test systems, analog input modules, weigh scale front-ends, and DC power supply monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4189IDR 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in precision signal chain solutions.
The OPAx189 family was designed specifically for high-accuracy, low-drift, multiplexed analog signal conditioning in industrial test equipment, process control, and precision measurement systems - prioritizing MUX compatibility, thermal stability, and wide supply flexibility.
FAQ
What is the maximum operating temperature range for the OPA4189IDR?
The OPA4189IDR is fully specified from –40°C to +125°C ambient temperature, with all key parameters - including offset voltage drift (±0.01 µV/°C), CMRR (≥120 dB), and quiescent current (≤1.8 mA) - guaranteed across this full industrial temperature range. This makes the OPA4189IDR suitable for deployment in harsh environments such as motor control cabinets and outdoor battery test chambers where thermal extremes occur.
Does the OPA4189IDR support single-supply operation?
Yes, the OPA4189IDR supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range extends to the negative rail (V–), and its rail-to-rail output can swing within 15 mV of either supply rail under no load. This enables direct interfacing with 3.3-V or 5-V microcontrollers and 24-V industrial buses without level-shifting circuitry - a key advantage in compact analog input modules using the OPA4189IDR.
How does the MUX-friendly input architecture of the OPA4189IDR improve multichannel system performance?
The OPA4189IDR's MUX-friendly inputs omit anti-parallel diodes found in conventional op-amps, preventing large inrush currents when switching between high-impedance sensor sources. This preserves source integrity, avoids settling delays caused by diode conduction, and maintains >60-TΩ input impedance during transitions - directly enabling faster channel-to-channel settling (1.1 µs to 0.01%) in 16-channel analog input modules using the OPA4189IDR as the front-end amplifier array.
What is the typical 0.1-Hz to 10-Hz noise performance of the OPA4189IDR?
The OPA4189IDR delivers 0.1 µVPP typical integrated noise from 0.1 Hz to 10 Hz, measured at unity gain with ±18-V supplies. This ultra-low flicker noise - combined with 5.2 nV/√Hz broadband noise at 1 kHz - ensures minimal contribution to system noise floor in precision weigh scale and thermocouple amplifier applications where sub-microvolt DC stability is required. The value is confirmed in TI's SBOS830I datasheet Figure 7-17.
Is the OPA4189IDR pin-compatible with other quad op-amps in SOIC-14 packages?
No, the OPA4189IDR has a unique pinout optimized for MUX-friendly operation and quad-channel independence - for example, V+ is on Pin 4 and V– on Pin 11, unlike standard SOIC-14 op-amps where supplies are typically on Pins 4 and 11 reversed or consolidated. Substituting the OPA4189IDR into an existing layout requires PCB revision. Always verify pin mapping using Table 6-3 in the official OPA4189IDR datasheet before integration.
OPA4189IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 14 MHz
- -3db Bandwidth:
- 8 MHz
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 1.3mA (x4 Channels)
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OPA4189IDR FAQ
1.How can I place an order for OPA4189IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4189IDR 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 OPA4189IDR reliable?
The price and inventory of OPA4189IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4189IDR is usually 5 days.
3.What payment methods are accepted for OPA4189IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4189IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4189IDR?
OPA4189IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4189IDR 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 OPA4189IDR?
For technical support, including OPA4189IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4189IDR requirements.
6.How does Aetrix verify that OPA4189IDR is sourced from the original manufacturer or authorized distributors?
All OPA4189IDR 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 OPA4189IDR meets industry standards.
7.What is the process for return or replacement of OPA4189IDR?
All OPA4189IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4189IDR, 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 OPA4189IDR part is unused and in its original packaging.
Return procedure for OPA4189IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4189IDR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
