My Inquiry
My Account
Texas Instruments OPA172IDCKT
- Part No.:
- OPA172IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA172IDCKT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,210
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA172IDCKT from Texas Instruments is a single-channel, 36-V rail-to-rail output operational amplifier with 10-MHz gain bandwidth, ±0.2-mV offset voltage, and 7-nV/√Hz input voltage noise density. It operates from ±2.25 V to ±18 V supplies, supports full rail-to-rail input (100 mV beyond rails), and delivers 10-V/µs slew rate for precision signal conditioning in high-voltage industrial sensing.
For engineers reviewing the OPA172IDCKT datasheet, OPA172IDCKT pinout, OPA172IDCKT application, or OPA172IDCKT equivalent, key selection considerations include its SC70-5 package footprint, low 1.6-mA quiescent current per amplifier, EMI-filtered inputs, and guaranteed operation from –40°C to +125°C in demanding embedded systems.
Technical Context
The OPA172IDCKT uses a high-voltage CMOS process enabling wide supply range (±2.25 V to ±18 V) and true rail-to-rail output swing within 70 mV of either rail at 36-V supply. Its input stage accepts common-mode voltages from (V–) – 0.1 V up to (V+) – 2 V, with no phase reversal beyond rails.
It features low-input-bias-current (±8 pA typical) JFET input architecture, 120-dB common-mode rejection, and integrated EMI/RFI filtering on both inputs-critical for precision transducer amplification in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +4.5 V to +36 V (single-supply) or ±2.25 V to ±18 V - enables direct interface with 24-V PLC I/O and high-side sensor bridges without level-shifting. |
| Gain Bandwidth | 10 MHz - supports stable closed-loop gain ≥10 at 1 MHz for anti-aliasing filter stages and fast-settling data acquisition front-ends. |
| Input Offset Voltage | ±0.2 mV (typical) - reduces DC error in strain gauge and thermocouple amplifiers without external trimming. |
| Slew Rate | 10 V/µs - ensures <3.2 µs settling to 0.01% for 10-V step inputs, suitable for precision DAC output buffering. |
| Input Voltage Noise | 7 nV/√Hz at 1 kHz - maintains SNR >90 dB in 20-kHz bandwidth applications like audio-grade instrumentation. |
| Quiescent Current | 1.6 mA per amplifier - balances performance and power in battery-backed industrial monitors and portable test equipment. |
| Output Swing | Within 70 mV of rails (RL = 10 kΩ, VS = +36 V) - maximizes dynamic range in single-supply 3.3-V or 5-V microcontroller ADC interfaces. |
Pinout & Package
OPA172IDCKT is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for space-constrained PCB layouts in portable and modular industrial electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+IN) | Noninverting input | Accepts signals down to V– – 0.1 V; used for high-impedance sensor connections with minimal loading. |
| 2 (V–) | Negative supply | Reference for internal biasing; must be connected to lowest system potential (e.g., ground or negative rail). |
| 3 (–IN) | Inverting input | Supports unity-gain stable configurations; differential input impedance >100 MΩ || 4 pF. |
| 4 (OUT) | Amplifier output | Rail-to-rail capable; drives ≥10-kΩ loads with <0.00005% THD+N at 1-kHz, 3.5-VRMS. |
| 5 (V+) | Positive supply | Accepts up to +36 V; internal protection limits absolute max to 40 V across V+–V– terminals. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 70 mV of supply rails at 36-V supply - preserves full-scale resolution when driving SAR or sigma-delta ADCs. |
| EMI/RFI filtered inputs | Integrated input-stage filtering suppresses >100-MHz RF interference - eliminates need for external ferrite beads in motor-drive feedback paths. |
| Input beyond rails | Operates with input up to (V+) + 0.1 V and (V–) – 0.1 V - enables safe overvoltage tolerance during power sequencing or fault conditions. |
| Low offset drift | ±0.3 µV/°C (–40°C to +125°C) - limits thermal-induced error to <0.1 mV over full industrial temperature range. |
| High CMRR | 120 dB (at ±18 V) - rejects common-mode noise from shared ground returns in multi-channel sensor arrays. |
Applications
| Transducer Amplifier | Bridge Amplifier |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells and pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier with programmable gain, configured as an instrumentation-grade difference amplifier. Use Value: ±0.2-mV offset and ±0.3-µV/°C drift minimize calibration frequency; rail-to-rail output maximizes ADC utilization in 24-bit systems. |
Use Scenario: Driving and measuring unbalanced Wheatstone bridge outputs in strain gauge-based structural health monitoring. IC Role / Device Role / Timing Role: Precision buffer and gain stage for bridge excitation and differential output conditioning. Use Value: 120-dB CMRR rejects bridge common-mode shifts due to temperature gradients; 10-MHz GBP supports fast response to mechanical shock events. |
| Temperature Measurement | Tracking Amplifier |
Use Scenario: Linearizing and amplifying RTD or thermistor signals in HVAC control units operating from –40°C to +125°C. IC Role / Device Role / Timing Role: Low-drift voltage follower and reference buffer for 3-wire RTD configurations. Use Value: Input bias current ≤8 pA prevents self-heating errors in high-resistance thermistors; wide supply range supports direct 24-V bus powering. |
Use Scenario: Real-time tracking of high-voltage DC bus levels in solar inverters and UPS modules. IC Role / Device Role / Timing Role: High-accuracy unity-gain buffer with fast overload recovery (<200 ns) for voltage sense feedback loops. Use Value: 10-V/µs slew rate and 3.2-µs 0.01% settling enable precise real-time bus monitoring without phase lag in closed-loop regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA192IDBVT | Higher 20-MHz GBP, lower 5.5-nV/√Hz noise, but higher 1.1-mA IQ and no EMI filtering. | Better for wideband audio or high-speed data acquisition; less robust in electrically noisy industrial enclosures. | Select OPA192IDBVT only if bandwidth >10 MHz is required and EMI immunity is handled externally. |
| OPA2188AIDR | Zero-drift architecture (0.005 µV/°C), 1.2-µV max offset, but limited 2-MHz GBP and 1.3-mA IQ. | Superior for ultra-stable DC-coupled applications (e.g., precision weigh scales); insufficient for >100-kHz signal chains. | Choose OPA2188AIDR when long-term DC accuracy dominates over speed and noise performance. |
Compared with OPA172IDCKT, OPA192IDBVT trades EMI resilience for bandwidth and noise, while OPA2188AIDR sacrifices speed for near-zero drift-making OPA172IDCKT the balanced choice for general-purpose high-voltage precision amplification where robustness, speed, and low noise must coexist.
Availability
OPA172IDCKT is available at Aetrix Electronics and suitable for industrial sensing, power module feedback, and test equipment requiring stable component supply across extended temperature ranges and high-voltage operation.
Supply support for OPA172IDCKT 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 op amps and high-reliability industrial ICs.
The OPAx172 family was designed for high-voltage, single-supply industrial signal conditioning-delivering rail-to-rail output, low noise, and EMI-hardened inputs in micropackages for space- and noise-sensitive applications.
FAQ
What is the maximum supply voltage rating for OPA172IDCKT?
The OPA172IDCKT has an absolute maximum supply voltage rating of 40 V across V+ and V– terminals. It is specified for continuous operation from +4.5 V to +36 V (single-supply) or ±2.25 V to ±18 V (dual-supply). Exceeding 40 V may cause permanent damage, and operation above +36 V voids guaranteed performance specifications.
Does OPA172IDCKT support rail-to-rail input operation?
Yes, the OPA172IDCKT supports rail-to-rail input operation with common-mode voltage range from (V–) – 0.1 V to (V+) – 2 V under normal conditions. It can tolerate input signals up to (V+) + 0.1 V without phase reversal, though performance is reduced within 2 V of the positive rail. This enables direct interfacing with sensors referenced to system ground or negative rails.
What is the thermal resistance (RθJA) of the OPA172IDCKT in its SC70-5 package?
The junction-to-ambient thermal resistance (RθJA) for OPA172IDCKT in the SC70-5 (DCK) package is 285.2°C/W, as measured per JEDEC JESD51 standards. This value assumes standard 2-layer PCB layout with no copper pour; actual board-level thermal performance improves significantly with thermal vias and copper planes beneath the exposed pad (if present) or adjacent traces.
Can OPA172IDCKT drive capacitive loads directly?
The OPA172IDCKT is not unity-gain stable into large capacitive loads. It requires isolation resistance (typically 10–100 Ω) between output and load capacitance >100 pF to prevent peaking or oscillation. The datasheet provides stability plots and recommends using the "Capacitive Load Drive Solution Using an Isolation Resistor" configuration for reliable operation with ADC input capacitors or long cables.
Is OPA172IDCKT qualified for automotive applications?
No, the OPA172IDCKT is not AEC-Q100 qualified. It is rated for industrial temperature range (–40°C to +125°C) and intended for industrial, test, and medical equipment-not automotive safety-critical systems. For automotive use, TI recommends the AEC-Q100 qualified OPA197 or OPA2197 families, which share similar architecture but undergo additional stress testing and qualification.
OPA172IDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1.6mA
- Current - Output / Channel:
- -
- 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:
- SC-70-5
OPA172IDCKT FAQ
1.How can I place an order for OPA172IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA172IDCKT 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 OPA172IDCKT reliable?
The price and inventory of OPA172IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA172IDCKT is usually 5 days.
3.What payment methods are accepted for OPA172IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA172IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA172IDCKT?
OPA172IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA172IDCKT 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 OPA172IDCKT?
For technical support, including OPA172IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA172IDCKT requirements.
6.How does Aetrix verify that OPA172IDCKT is sourced from the original manufacturer or authorized distributors?
All OPA172IDCKT 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 OPA172IDCKT meets industry standards.
7.What is the process for return or replacement of OPA172IDCKT?
All OPA172IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA172IDCKT, 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 OPA172IDCKT part is unused and in its original packaging.
Return procedure for OPA172IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA172IDCKT 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…
