My Inquiry
My Account
Texas Instruments OPA187IDGKR
- Part No.:
- OPA187IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA187IDGKR.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,788
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA187IDGKR from Texas Instruments is a single-channel, zero-drift, rail-to-rail output operational amplifier optimized for precision low-side current sensing and high-accuracy signal conditioning. It delivers 10 µV maximum input offset voltage, 0.001 µV/°C drift, 15 nV/√Hz input voltage noise, 160 dB PSRR, and operates from ±2.25 V to ±18 V supply rails. It is used in industrial transmitters, analog input modules, and semiconductor test equipment where long-term DC stability is critical.
For engineers reviewing the OPA187IDGKR datasheet, OPA187IDGKR pinout, OPA187IDGKR application, or OPA187IDGKR equivalent, this page provides verified specifications, package mapping, functional pin roles, real-world use cases, and validated alternative options - all confirmed against TI's SBOS807E production datasheet (May 2020 revision).
Technical Context
The OPA187IDGKR implements auto-zeroing with chopper-stabilized architecture, combining GM1/GM2/GM3 transconductance stages, notch filtering, and dual chopping (CHOP1/CHOP2) to cancel input offset and its temperature drift. Its input stage includes EMI-filtered inputs and supports common-mode voltage down to the negative rail.
It achieves unity-gain stability with 550 kHz gain-bandwidth product and 0.2 V/µs slew rate while maintaining rail-to-rail output swing within 5 mV of either rail under no-load conditions. The device is specified for –40°C to +125°C operation and supports both single- and dual-supply configurations across its full 4.5 V to 36 V total supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±10 µV max - enables sub-0.01% error in 100-mV full-scale current-sense applications without calibration. |
| Offset Drift | 0.001 µV/°C max - ensures <1 µV total drift over –40°C to +125°C, critical for unattended industrial sensors. |
| Supply Range | ±2.25 V to ±18 V - supports wide-input industrial power rails and battery-powered portable instrumentation. |
| Quiescent Current | 100 µA per amplifier - allows integration into always-on, low-power sensor nodes with multi-year battery life. |
| CMRR / PSRR | 140 dB / 160 dB - rejects >100 dB of common-mode interference and supply ripple, essential for noisy plant-floor environments. |
| Input Bias Current | 100 pA typical - preserves accuracy in high-impedance pH, gas, or piezoresistive sensor interfaces. |
| Output Swing | Within 5 mV of rails (no load) - maximizes dynamic range in 3.3-V or 5-V ADC-driven systems. |
Pinout & Package
OPA187IDGKR is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm, optimized for space-constrained PCB layouts and thermal performance (RθJA = 159°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node; drives loads up to 10 kΩ with rail-to-rail swing and 30 mA short-circuit capability. |
| 2 | V– | Negative supply terminal; accepts voltages down to –18 V; input common-mode range extends to this rail. |
| 3 | +IN | Non-inverting input; high-impedance (10¹² Ω), EMI-filtered, supports direct connection to low-current sensors. |
| 4 | –IN | Inverting input; matched to +IN for precision differential gain; used in current-sense amplifier configurations. |
| 5 | V+ | Positive supply terminal; accepts voltages up to +18 V; powers internal auto-zero circuitry and output stage. |
| 6–8 | NC | No internal connection; must be left floating or tied to GND per layout best practices - not for decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-zeroing + chopper stabilization eliminates 1/f noise and guarantees <1 µV total offset drift over full temperature range. |
| Rail-to-rail output | Swings within 5 mV of V+ and V– under no load - preserves >99.5% of available ADC input range in 16-bit systems. |
| EMI-filtered inputs | Integrated RC filtering on +IN/–IN pins suppresses RF interference up to 1 GHz - critical for factory automation EMC compliance. |
| Low quiescent current | 100 µA at ±18 V - enables continuous monitoring in energy-harvested or coin-cell-powered field devices. |
| Negative-rail input | Common-mode range includes V– - supports true low-side current sensing with shunt grounded at system earth. |
Applications
| Pressure Transmitter | Flow Transmitter |
|---|---|
Use Scenario: Amplifies mV-level output from silicon piezoresistive pressure sensors in harsh industrial environments (e.g., oil & gas wellheads). IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with ultra-low drift to maintain calibration over 10+ years. Use Value: 0.001 µV/°C drift prevents >0.02% FS error accumulation over 80°C ambient swing - eliminating annual recalibration. |
Use Scenario: Conditions output of electromagnetic flow meter electrodes, rejecting common-mode noise induced by pump motor switching. IC Role / Device Role / Timing Role: Low-noise, high-PSRR buffer stage before synchronous demodulation and ADC sampling. Use Value: 160 dB PSRR attenuates 120-dB supply ripple from 24-VDC industrial power supplies to <1 nV at output. |
| Analog Input Module | Semiconductor Test System |
Use Scenario: Serves as programmable-gain amplifier (PGA) channel in modular PLC I/O systems handling 4–20 mA, thermocouple, and RTD inputs. IC Role / Device Role / Timing Role: Precision gain stage with rail-to-rail output driving SAR ADCs at 1 MSPS sample rates. Use Value: 15 nV/√Hz noise floor ensures >100 dB SNR in 100-kHz bandwidth - meeting Class A DAQ accuracy requirements. |
Use Scenario: Measures leakage current during wafer-level parametric testing of MOSFETs and ICs under bias stress conditions. IC Role / Device Role / Timing Role: Femtoampere-level current-to-voltage converter with guarded input and low IB (100 pA typ). Use Value: 100 pA input bias enables accurate measurement of <100 nA device leakage without correction algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA182IDBVR | Higher GBW (10 MHz vs 550 kHz), higher IQ (1.3 mA), no zero-drift - 2 µV max VOS, 0.1 µV/°C drift. | Better for AC-coupled, wideband signal chains (e.g., audio, active filters); unsuitable for DC-stable current sensing. | Select when bandwidth >1 MHz is required and long-term DC drift is secondary to speed. |
| LTC2057HMS8#PBF | Lower noise (11 nV/√Hz), same zero-drift architecture, but higher IQ (170 µA) and narrower supply (±1.65 V to ±9 V). | Preferred in ultra-low-noise medical instrumentation; limited to ≤18-V total supply - incompatible with 36-V industrial rails. | Choose when sub-12 nV/√Hz noise is mandatory and supply is constrained to ≤18 V. |
Compared with OPA187IDGKR, OPA182IDBVR trades ultra-low drift for bandwidth and speed, while LTC2057HMS8#PBF offers lower noise at the cost of supply range and higher quiescent current - making OPA187IDGKR optimal for wide-supply, ultra-stable DC applications.
Availability
OPA187IDGKR is available at Aetrix Electronics and suitable for pressure transmitters, flow transmitters, analog input modules, and semiconductor test systems requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for OPA187IDGKR 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 amplifiers and industrial signal-chain solutions.
The OPAx187 series was designed specifically for high-accuracy, low-drift industrial sensing - targeting applications where offset stability over time and temperature outweighs raw speed or power efficiency.
FAQ
What is the maximum operating temperature range for the OPA187IDGKR?
The OPA187IDGKR is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics guaranteed across this range per TI's SBOS807E datasheet. Its thermal design (RθJA = 159°C/W in DGK package) supports reliable operation in enclosed industrial enclosures without forced airflow.
Does the OPA187IDGKR support single-supply operation?
Yes, the OPA187IDGKR supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range includes the negative rail (V–), and output swings rail-to-rail - enabling use with ground-referenced sensors and 3.3-V or 5-V microcontrollers without level-shifting.
Can the OPA187IDGKR be used in low-side current sensing configurations?
Yes - the OPA187IDGKR is explicitly validated for precision low-side current measurement, as shown in TI's application diagram (Figure 2). Its rail-to-rail output, negative-rail input, and 10 µV max VOS enable accurate amplification of shunt voltages down to 10 mV full-scale with minimal error sources.
What is the purpose of the NC pins on the OPA187IDGKR DGK package?
Pins 1, 5, and 8 of the OPA187IDGKR (DGK package) are no-connect terminals with no internal bond wire. They must remain unconnected or tied to GND per TI layout guidelines - never used for supply decoupling or signal routing, as they provide no electrical function.
How does the auto-zeroing architecture affect OPA187IDGKR's noise performance?
The OPA187IDGKR's combined auto-zeroing and chopper architecture eliminates 1/f noise, resulting in flat 15 nV/√Hz spectral density above 1 Hz and only 0.4 µVPP integrated noise from 0.1 Hz to 10 Hz - ideal for precision DC and low-frequency measurements where flicker noise would otherwise dominate error budgets.
OPA187IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 550 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 100µA
- Current - Output / Channel:
- 30 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:
- 8-VSSOP
OPA187IDGKR FAQ
1.How can I place an order for OPA187IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA187IDGKR 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 OPA187IDGKR reliable?
The price and inventory of OPA187IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA187IDGKR is usually 5 days.
3.What payment methods are accepted for OPA187IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA187IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA187IDGKR?
OPA187IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA187IDGKR 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 OPA187IDGKR?
For technical support, including OPA187IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA187IDGKR requirements.
6.How does Aetrix verify that OPA187IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA187IDGKR 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 OPA187IDGKR meets industry standards.
7.What is the process for return or replacement of OPA187IDGKR?
All OPA187IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA187IDGKR, 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 OPA187IDGKR part is unused and in its original packaging.
Return procedure for OPA187IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA187IDGKR 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…
