My Inquiry
My Account
Texas Instruments OPA4189IDT
- Part No.:
- OPA4189IDT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4189IDT.pdf
- Description:
- QUAD, 14-MHZ, MUX-FRIENDLY, ZERO
- Quantity:
- Payment:
- Shipping:
Inventory:193
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA4189IDT from Texas Instruments is a quad-channel, 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 battery test systems and weigh scale front-ends.
For engineers reviewing the OPA4189IDT datasheet, OPA4189IDT pinout, OPA4189IDT application, or OPA4189IDT equivalent, this page provides verified specifications, TSSOP-14 package details, real-world use cases in multichannel data acquisition, and validated alternative options for precision op-amp selection.
Technical Context
The OPA4189IDT implements a chopper-stabilized architecture with auto-zeroing to achieve ultra-low drift and offset. Its MUX-friendly input stage eliminates anti-parallel diodes, maintaining high input impedance (>60 TΩ common-mode) and preventing source loading during large differential voltage transitions across switched inputs.
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 RFI/EMI filtering - making it suitable for noisy industrial environments where DC precision and fast settling (1.1 µs to 0.01%) must coexist.
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 ADC front-ends |
| Offset Drift | ±0.005 µV/°C - ensures <1 µV total drift over –40°C to +125°C, critical for unattended test equipment |
| Gain Bandwidth | 14 MHz - supports stable closed-loop operation up to 100 kHz with G = 100, ideal for active filter stages |
| Slew Rate | 20 V/µs - allows full-scale 10-V step response in ≤1.1 µs with 0.01% settling, essential for multiplexed sampling |
| CMRR | 168 dB - rejects >100 dB of common-mode noise at DC, preserving signal integrity in bridge sensor interfaces |
| Input Voltage Noise | 5.2 nV/√Hz @ 1 kHz - maintains SNR >110 dB in low-frequency precision amplification paths |
| Quiescent Current | 1.7 mA per amplifier - balances low power with high speed for multi-amplifier systems requiring thermal stability |
Pinout & Package
TSSOP-14 (PW) package: 5.00 mm × 4.40 mm body, 0.65 mm pitch, thermally enhanced for 106.4°C/W junction-to-ambient resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A–D | Amplifier outputs; rail-to-rail capable, drive ≥10 kΩ loads to within 15 mV of supply rails |
| 2, 6, 9, 13 | –IN A–D | Inverting inputs; MUX-friendly architecture prevents current injection during differential switching |
| 3, 5, 10, 12 | +IN A–D | Noninverting inputs; support common-mode range down to V– – 0.1 V for ground-referenced sensors |
| 4 | V+ | Positive supply terminal; accepts 4.5 V to 36 V single or ±2.25 V to ±18 V dual supplies |
| 11 | V– | Negative supply terminal; enables true single-supply operation with input extending to negative rail |
Key Features
| Feature | Design Value |
|---|---|
| MUX-friendly input architecture | Eliminates anti-parallel diodes to prevent source loading and preserve RC settling time in multiplexed data acquisition |
| Rail-to-rail output swing | Delivers full dynamic range to ADCs by swinging within 15 mV of supply rails under no-load conditions |
| RFI/EMI filtered inputs | Integrated filtering suppresses high-frequency interference without external components, reducing layout sensitivity |
| Zero-drift core | Chopper + auto-zero hybrid design achieves 0.005 µV/°C drift and <3 µV offset - stable over temperature and time |
| Wide supply range | Operates from 4.5 V to 36 V single supply or ±2.25 V to ±18 V dual supply - compatible with legacy industrial rails |
Applications
| Battery Test System | Analog Input Module |
|---|---|
Use Scenario: High-precision voltage and current measurement during charge/discharge cycling of Li-ion cells. IC Role / Device Role / Timing Role: Front-end signal conditioner for 24-bit delta-sigma ADCs, amplifying mV-level shunt voltages with minimal drift-induced error. Use Value: 0.005 µV/°C drift ensures <0.5 µV error over 85°C ambient shift - critical for SOC estimation accuracy. | Use Scenario: Industrial PLC analog input card acquiring signals from 4–20 mA transmitters and RTDs. IC Role / Device Role / Timing Role: Precision buffer and gain stage before isolation and digitization, handling multiple sensor types on shared PCB. Use Value: MUX-friendly inputs enable seamless channel switching without settling penalty - reduces scan time by >30% vs conventional op-amps. |
| Weigh Scale | DC Power Supply Monitoring |
Use Scenario: Strain gauge bridge excitation and differential output amplification in platform scales. IC Role / Device Role / Timing Role: Instrumentation-grade amplifier with 168 dB CMRR rejecting common-mode noise from AC mains coupling into bridge wiring. Use Value: 3 µV max offset contributes <0.001% FS error - meets OIML Class III metrology requirements. | Use Scenario: Real-time sensing of output voltage and current in programmable DC power supplies. IC Role / Device Role / Timing Role: Fast-settling feedback amplifier in digital control loop, conditioning sense signals for FPGA-based PID computation. Use Value: 1.1 µs to 0.01% settling enables 1 MHz sampling of transient events like load dump recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182IPW | Lower noise (5.5 nV/√Hz), but higher offset (125 µV) and drift (0.3 µV/°C); no MUX-friendly inputs | Acceptable for non-multiplexed, lower-precision applications where cost is prioritized over drift | Select when absolute lowest noise is required and drift tolerance >10× looser than OPA4189IDT |
| LTC6090CGN-4#PBF | Higher supply range (±19.5 V), higher slew rate (35 V/µs), but larger offset (125 µV) and no zero-drift architecture | Suitable for high-voltage signal conditioning where rail-to-rail output is not mandatory | Choose for ±15 V systems needing >30 V/µs slew rate and >100 dB PSRR, accepting higher DC error |
Compared with OPA4189IDT, OPA4182IPW trades ultra-low drift for lower cost and slightly better noise floor, while LTC6090CGN-4#PBF offers higher voltage headroom and speed at the expense of DC precision - neither matches the OPA4189IDT's combination of sub-µV drift, MUX compatibility, and 14-MHz bandwidth in TSSOP-14.
Availability
OPA4189IDT is available at Aetrix Electronics and suitable for battery test systems, industrial analog input modules, weigh scale electronics, and DC power supply monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4189IDT 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 signal conditioning in multiplexed data acquisition, battery testing, and industrial measurement - emphasizing MUX compatibility, rail-to-rail operation, and long-term stability.
FAQ
What is the maximum operating temperature range for the OPA4189IDT?
The OPA4189IDT is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics guaranteed across this range. Its zero-drift architecture ensures stable offset and drift performance even at temperature extremes - critical for automotive under-hood or industrial control cabinet deployments where thermal cycling is severe. The TSSOP-14 package supports this rating via optimized thermal resistance (RθJA = 106.4°C/W).
Does the OPA4189IDT support true single-supply operation with input referenced to ground?
Yes, the OPA4189IDT supports true single-supply operation with its input common-mode range extending to V– – 0.1 V. When V– is grounded, the inputs accept signals down to –0.1 V, enabling direct interfacing with ground-referenced sensors like strain gauges or thermocouples without level-shifting circuitry - a key advantage over many competing precision op-amps.
How does the MUX-friendly input architecture of the OPA4189IDT improve system performance?
The OPA4189IDT's MUX-friendly inputs eliminate internal anti-parallel diodes, preventing current injection into the signal source during large differential voltage transitions. This preserves source impedance integrity and avoids RC time constant degradation - resulting in consistent 1.1 µs settling to 0.01% across all four channels in multiplexed systems, unlike conventional op-amps that require additional guard bands or recalibration.
What is the typical quiescent current per amplifier in the OPA4189IDT?
The OPA4189IDT draws 1.3 mA typical and 1.7 mA maximum quiescent current per amplifier at 25°C, scaling predictably with supply voltage. At full –40°C to +125°C range, max current rises to 1.8 mA per amplifier. This balance of low power and high speed makes it suitable for multi-channel precision systems where thermal density and power budget are constrained - such as portable test equipment using the OPA4189IDT.
Can the OPA4189IDT drive capacitive loads without instability?
The OPA4189IDT is characterized for stable operation with capacitive loads up to 100 pF, as shown in the "Small-Signal Overshoot vs Capacitive Load" graph (Figure 7-26). For heavier loads, external series resistance (typically 10–50 Ω) at the output is recommended to maintain phase margin. Its open-loop output impedance (380 Ω at 1 MHz) and internal compensation ensure predictable behavior - unlike some precision op-amps requiring complex external compensation networks when driving ADC input capacitance.
OPA4189IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- 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
OPA4189IDT FAQ
1.How can I place an order for OPA4189IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4189IDT 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 OPA4189IDT reliable?
The price and inventory of OPA4189IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4189IDT is usually 5 days.
3.What payment methods are accepted for OPA4189IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4189IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4189IDT?
OPA4189IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4189IDT 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 OPA4189IDT?
For technical support, including OPA4189IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4189IDT requirements.
6.How does Aetrix verify that OPA4189IDT is sourced from the original manufacturer or authorized distributors?
All OPA4189IDT 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 OPA4189IDT meets industry standards.
7.What is the process for return or replacement of OPA4189IDT?
All OPA4189IDT units undergo pre-shipment inspection (PSI). If there is an issue with OPA4189IDT, 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 OPA4189IDT part is unused and in its original packaging.
Return procedure for OPA4189IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4189IDT 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…
