My Inquiry
My Account
Texas Instruments OPA2227UE4
- Part No.:
- OPA2227UE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2227UE4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,379
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2227UE4 from Texas Instruments is a dual, high-precision, low-noise operational amplifier optimized for AC and precision DC applications. It delivers 3 nV/√Hz input voltage noise, 8 MHz gain bandwidth, 2.3 V/µs slew rate, and ±75 µV max input offset voltage across –40°C to 85°C - enabling high-fidelity signal conditioning in professional audio and data acquisition systems.
For engineers reviewing the OPA2227UE4 datasheet, OPA2227UE4 pinout, OPA2227UE4 application, or OPA2227UE4 equivalent, key selection factors include its unity-gain stability, SOIC-8 package compatibility, rail-to-rail output capability (±2 V swing), low 3.7 mA quiescent current per channel, and direct replacement path for OP-27 and LT1007 in dual-channel layouts.
Technical Context
The OPA2227UE4 implements a bipolar input stage with matched transistor pairs to achieve ultra-low voltage noise and high open-loop gain (160 dB). Its internal compensation ensures unity-gain stability without external components, supporting wideband operation up to 8 MHz while maintaining 138 dB CMRR and 160 dB AOL at 25°C.
It operates from ±2.5 V to ±18 V supplies, with input common-mode range extending to within 2 V of rails and output swing to within 2 V of rails (RL = 10 kΩ). Channel separation exceeds 110 dB at 1 kHz, confirming minimal crosstalk in dual-channel configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 3 nV/√Hz at 1 kHz - enables sub-μV signal amplification in low-level sensor interfaces |
| Gain Bandwidth Product | 8 MHz - supports stable closed-loop gain ≥1 with ≤125 ns group delay in 10-bit+ data acquisition |
| Slew Rate | 2.3 V/µs - preserves 10 Vpp signals up to ~360 kHz without distortion |
| Input Offset Voltage | ±75 µV max - reduces DC error to <0.001% FS in 12-bit systems with ±10 V full-scale |
| CMRR | 138 dB - rejects >79 million:1 common-mode interference in differential measurement front-ends |
| Supply Range | ±2.5 V to ±18 V - allows flexible biasing in mixed-signal systems with ±5 V, ±12 V, or ±15 V rails |
| Quiescent Current | 3.7 mA per channel - balances low power with high linearity for battery-powered instrumentation |
Pinout & Package
OPA2227UE4 is housed in an 8-pin SOIC (SO-8) package measuring 4.90 mm × 3.91 mm, with standard dual op-amp pinout compatible with industry footprint requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Out A | Output channel A | Amplified signal output for first op-amp; drives loads ≥600 Ω with ±3.5 V swing |
| 2 - –In A | Inverting input channel A | Differential input node; accepts signals within (V–)+2 V to (V+)–2 V range |
| 3 - +In A | Noninverting input channel A | Differential input node; high-impedance (10⁹ Ω || 3 pF) for precision sensing |
| 4 - V– | Negative supply | Lowest potential rail; must be decoupled with 0.1 μF capacitor near pin |
| 5 - +In B | Noninverting input channel B | Second op-amp input; electrically isolated from channel A with >110 dB separation |
| 6 - –In B | Inverting input channel B | Second op-amp input; identical specs and layout sensitivity as channel A |
| 7 - Out B | Output channel B | Independent output; supports simultaneous dual-channel signal processing |
| 8 - V+ | Positive supply | Highest potential rail; requires local 0.1 μF decoupling for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | Eliminates need for external compensation components in G = 1 configurations |
| Low 1/f noise corner | 90 nVpp integrated 0.1–10 Hz noise - critical for DC-coupled geophysical sensors |
| No phase reversal | Prevents latch-up during input overdrive, ensuring robustness in active filter feedback paths |
| High PSRR (138 dB) | Maintains accuracy despite ±2 V ripple on ±15 V supplies in industrial power environments |
| Wide temperature spec | Full electrical performance guaranteed from –40°C to 85°C - suitable for outdoor telecom equipment |
Applications
| Professional Audio Preamp | Data Acquisition Front-End |
|---|---|
Use Scenario: Low-noise microphone preamplification in studio-grade mixing consoles. IC Role / Device Role / Timing Role: Dual-channel signal conditioning with independent gain stages for stereo L/R paths. Use Value: 3 nV/√Hz noise floor preserves dynamic range >120 dB; 8 MHz bandwidth supports ultrasonic content capture. | Use Scenario: High-resolution analog input module for 16-bit ADC systems in test equipment. IC Role / Device Role / Timing Role: Precision buffer and anti-aliasing filter driver with matched channel characteristics. Use Value: ±75 µV offset and 138 dB CMRR minimize calibration drift; 2.3 V/µs slew rate prevents settling errors at 100 kSPS. |
| Vibration Analysis Sensor Interface | Power Supply Monitoring Circuit |
Use Scenario: Conditioning piezoelectric accelerometer outputs in predictive maintenance systems. IC Role / Device Role / Timing Role: Charge amplifier and DC-coupled gain stage for IEPE sensors. Use Value: 0.1–10 Hz integrated noise of 90 nVpp enables resolution of sub-mg mechanical vibrations. | Use Scenario: Accurate sensing of ±12 V rail voltages in server power delivery networks. IC Role / Device Role / Timing Role: Dual-channel differential monitor for redundant voltage supervision. Use Value: Channel separation >110 dB prevents cross-talk between primary/backup monitoring paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA227UA | Single-channel version; identical noise, GBW, and offset specs but no channel pairing | Requires two units for dual-channel use; increases board area and component count | Select when only one amplifier is needed or layout constraints favor single-channel placement |
| LT1007CN8#PBF | Higher 10 nA max input bias current; 10 MHz GBW; not unity-gain stable | Needs external compensation for G = 1; less suitable for low-impedance sensor buffering | Choose only if legacy design reuse or specific thermal drift profile is required |
Compared with OPA2227UE4, OPA227UA lacks integrated dual-channel matching and increases PCB footprint, while LT1007CN8#PBF introduces stability risks and higher input current - making OPA2227UE4 the optimal choice for new dual-channel precision designs requiring unity-gain operation and lowest noise.
Availability
OPA2227UE4 is available at Aetrix Electronics and suitable for professional audio equipment, data acquisition systems, and vibration analysis instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA2227UE4 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The OPAx22x product line was engineered specifically for high-fidelity signal chains where simultaneous AC fidelity and DC precision are non-negotiable - targeting audio, instrumentation, and scientific measurement applications.
FAQ
What is the maximum operating supply voltage for the OPA2227UE4?
The OPA2227UE4 supports a total supply voltage range of ±2.5 V to ±18 V, with absolute maximum ratings allowing up to ±18 V per rail (36 V total). Operation beyond ±18 V risks permanent damage, and recommended conditions specify ±5 V to ±15 V for guaranteed parametric performance across temperature.
Does the OPA2227UE4 require external compensation capacitors?
No, the OPA2227UE4 is internally compensated for unity-gain stability. External compensation is unnecessary for closed-loop gains ≥1. However, 0.1 μF ceramic decoupling capacitors are mandatory at both V+ and V– pins to suppress high-frequency supply noise and ensure stability under dynamic load conditions.
Can the OPA2227UE4 drive a 600 Ω load effectively?
Yes, the OPA2227UE4 delivers ±3.5 V output swing into 600 Ω loads at ±15 V supplies, with specified performance maintained across –40°C to 85°C. Its 45 mA short-circuit current and 27 Ω open-loop output impedance enable robust driving of low-impedance cables and transformer-coupled audio stages without gain compression.
How does the OPA2227UE4 compare to the OPA227 in pin compatibility?
The OPA2227UE4 (dual) and OPA227 (single) share identical SOIC-8 pinouts for their respective channels, but differ in function allocation: OPA2227UE4 uses pins 1–3 and 5–7 for dual amplifiers, while OPA227 uses pins 1, 2, 3, 6, 7, and 8 for single-amplifier operation with trim pins. They are not pin-compatible replacements.
Is the OPA2227UE4 suitable for use in automotive applications?
The OPA2227UE4 is characterized for operation from –40°C to +85°C and meets industrial temperature requirements, but it is not AEC-Q200 qualified. For automotive applications requiring qualification, designers should consult TI's automotive-grade alternatives such as the OPA2991QDGKRQ1, which offers similar precision with extended reliability testing.
OPA2227UE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2.3V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 nA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 3.7mA (x2 Channels)
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2227UE4 FAQ
1.How can I place an order for OPA2227UE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2227UE4 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 OPA2227UE4 reliable?
The price and inventory of OPA2227UE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2227UE4 is usually 5 days.
3.What payment methods are accepted for OPA2227UE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2227UE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2227UE4?
OPA2227UE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2227UE4 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 OPA2227UE4?
For technical support, including OPA2227UE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2227UE4 requirements.
6.How does Aetrix verify that OPA2227UE4 is sourced from the original manufacturer or authorized distributors?
All OPA2227UE4 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 OPA2227UE4 meets industry standards.
7.What is the process for return or replacement of OPA2227UE4?
All OPA2227UE4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2227UE4, 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 OPA2227UE4 part is unused and in its original packaging.
Return procedure for OPA2227UE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2227UE4 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…
