My Inquiry
My Account
Texas Instruments OPA2241PA
- Part No.:
- OPA2241PA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA2241PA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:593
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2241PA from Texas Instruments is a dual-channel, micro-power operational amplifier optimized for single-supply operation at 5V, featuring 25μA quiescent current per amplifier, ±250μV max input offset voltage, rail-to-rail output swing within 50mV of rails, and 124dB common-mode rejection-used in portable medical instrumentation and battery-powered test equipment.
For engineers reviewing the OPA2241PA datasheet, OPA2241PA pinout, OPA2241PA application, or OPA2241PA equivalent, key selection considerations include its dual-channel SOIC-8/PDIP-8 packaging, low-voltage single-supply capability (2.7V to 36V), unity-gain stability with capacitive load drive up to 200pF, and trim-pin support for precision offset adjustment in single-op-amp variants.
Technical Context
The OPA2241PA belongs to the OPAx241 family, laser-trimmed at 5V for minimal offset voltage and drift; it operates across −40°C to +85°C and supports both single-supply (2.7V–36V) and dual-supply (±1.35V–±18V) configurations while maintaining rail-to-rail output and high open-loop gain (120dB min).
Its input common-mode range extends 200mV below V−, enabling robust performance in single-supply sensor interfaces; the device is unity-gain stable and includes dedicated trim pins (1 and 5) on single-channel variants-though OPA2241PA (dual) lacks trim pins per datasheet Table 4-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual amplifier-enables compact two-signal conditioning paths on one IC. |
| Quiescent Current | ±25 μA per amplifier-supports multi-year battery life in always-on portable devices. |
| Input Offset Voltage | ±250 μV max (TA = −40°C to +85°C)-reduces DC error without external trimming in most applications. |
| CMRR | 124 dB-rejects noise from shared power rails in mixed-signal PCB layouts. |
| Rail-to-Rail Output | Swings within 50 mV of supply rails at AOL > 70 dB-maximizes dynamic range in low-voltage systems. |
| Gain-Bandwidth Product | 35 kHz-suitable for DC-coupled signal conditioning, sensor amplification, and slow-control loops. |
| Supply Range | Single: 2.7V–36V; Dual: ±1.35V–±18V-compatible with coin cells, Li-ion, and industrial 24V rails. |
Pinout & Package
OPA2241PA is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch; lead finish is NiPdAu (NIPDAU). RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | Accepts high-impedance analog signals; common-mode range extends 0.2V below V−. |
| −IN A (Pin 2) | Inverting input, Channel A | Used for feedback configuration; matched bias current minimizes offset in transimpedance designs. |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail capable; drives ≥100kΩ loads with <100mV headroom at full temperature range. |
| V− (Pin 4) | Negative power supply | Reference for single-supply operation (often ground); sets lower bound of input common-mode range. |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent input path; enables dual-sensor readout or differential pair buffering. |
| −IN B (Pin 6) | Inverting input, Channel B | Electrically isolated from Channel A inputs; channel separation >106 dB at DC. |
| OUT B (Pin 7) | Output, Channel B | Unity-gain stable; supports direct connection to ADC reference or second-stage filter. |
| V+ (Pin 8) | Positive power supply | Accepts up to 36V; bypassing with 0.01μF ceramic capacitor required for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Micro-power operation | 25μA per amplifier enables >10-year battery life in 10μA-systems with duty-cycled sensing. |
| Laser-trimmed offset | ±250μV max eliminates need for manual nulling in most portable instrumentation front-ends. |
| Rail-to-rail output | 50mV rail margin at 2.7V supply preserves >95% of available dynamic range for 12-bit ADCs. |
| High CMRR (124dB) | Rejects 1000:1 common-mode interference-critical for ECG electrodes and thermocouple amplifiers. |
| Unity-gain stable | Drives 200pF capacitive loads directly-simplifies anti-aliasing filter design without isolation resistors. |
Applications
| Battery-Powered Medical Sensors | Portable Test Equipment |
|---|---|
|
Use Scenario: Amplifying low-level bio-potential signals (e.g., ECG, EMG) from dry electrodes in handheld diagnostic tools. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end providing DC-coupled gain and common-mode rejection before ADC sampling. Use Value: 25μA quiescent current extends battery life to >2 years in continuous-monitoring mode; rail-to-rail output maximizes SNR into 3.3V SAR ADCs. |
Use Scenario: Signal conditioning in handheld multimeters and portable oscilloscope probes. IC Role / Device Role / Timing Role: Dual op-amp implementing precision attenuator/level-shifter and buffer stages for AC/DC voltage measurement paths. Use Value: ±250μV offset ensures <0.01% reading error over temperature; wide 2.7–36V supply accommodates both AA-battery and bench power sources. |
| Low-Power Industrial Data Loggers | Wearable Health Monitors |
|
Use Scenario: Conditioning thermistor, RTD, and strain gauge outputs in remote environmental sensors powered by solar-charged Li-ion cells. IC Role / Device Role / Timing Role: Dual-channel programmable-gain amplifier with selectable gain and filtering for multi-sensor fusion. Use Value: 124dB CMRR rejects switching noise from nearby DC-DC converters; 35kHz GBW supports 10Hz–1kHz sensor bandwidths with phase margin >60°. |
Use Scenario: Front-end amplification of PPG and galvanic skin response (GSR) signals in wrist-worn fitness trackers. IC Role / Device Role / Timing Role: Dual op-amp configured as transimpedance amplifier (TIA) and active low-pass filter for optical sensor signal chain. Use Value: 65nV/√Hz input voltage noise density preserves weak optical signal integrity; 25μA IQ enables 7-day runtime on 100mAh coin cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, micro-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PA | Zero-drift architecture; 0.02μV/°C offset drift vs. OPA2241PA's ±0.4μV/°C; 17μA IQ; 350kHz GBW. | Better for DC-precision applications requiring sub-μV drift over temperature; higher bandwidth suits faster sensor sampling. | Select OPA2333PA when long-term DC stability outweighs ultra-low IQ; avoid if strict 25μA budget is mandatory. |
| MCP6022-I/P | Higher IQ (100μA); 2.7V–6V supply only; 10μV offset; 1MHz GBW; no trim pins. | Suitable for higher-speed, narrow-supply applications where power budget allows; not rated for 36V operation. | Choose MCP6022-I/P for cost-sensitive, 3–5V systems needing >100kHz bandwidth; reject for 24V industrial or extended battery-life use. |
Compared with OPA2241PA, OPA2333PA delivers superior DC accuracy at slightly higher current and bandwidth, while MCP6022-I/P trades ultra-low power for speed and cost-but neither matches OPA2241PA's combination of 36V tolerance, 25μA IQ, and 124dB CMRR in a PDIP-8 package.
Availability
OPA2241PA is available at Aetrix Electronics and suitable for battery-operated instruments, portable medical devices, and industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2241PA 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, with over 90 years of innovation in precision amplifiers and power management ICs.
The OPAx241 series was designed specifically for ultra-low-power, single-supply portable instrumentation-emphasizing rail-to-rail output, low offset, and robust operation from coin-cell to 36V industrial rails.
FAQ
What is the maximum supply voltage rating for OPA2241PA?
The OPA2241PA supports a single-supply voltage range of 2.7V to 36V and dual-supply operation from ±1.35V to ±18V. Absolute maximum supply voltage is 36V (single) or ±18V (dual), beyond which permanent damage may occur. Operation at 36V is fully specified over −40°C to +85°C, making OPA2241PA suitable for industrial 24V systems and wide-input power monitors.
Does OPA2241PA include offset voltage trim pins?
No, OPA2241PA does not include offset voltage trim pins. Trim functionality is provided only on single-channel variants (OPA241 and OPA251) via pins 1 and 5. As a dual-channel device, OPA2241PA relies on factory laser trimming-delivering ±250μV max input offset voltage across −40°C to +85°C without user adjustment.
Can OPA2241PA drive capacitive loads, and what is the limit?
Yes, OPA2241PA is unity-gain stable and can drive up to 200pF capacitive loads when operating at VS = 5V, G = 1, and IOUT = 0. At higher supplies (e.g., ±15V) or increased gain, capacitive load drive improves-up to ~2700pF. For loads exceeding 200pF at low supply, a small series resistor (e.g., 5kΩ) in the feedback path restores stability while preserving DC accuracy.
What is the operating temperature range for OPA2241PA?
The OPA2241PA is fully specified over −40°C to +85°C for electrical performance and operates reliably from −55°C to +125°C. The PDIP package (P) has a thermal resistance RθJA of 100°C/W, supporting ambient operation up to +85°C with appropriate board layout and airflow-ideal for sealed portable enclosures and industrial edge nodes.
How does OPA2241PA compare to OPA2251 in terms of supply optimization?
OPA2241PA belongs to the OPAx241 family, laser-trimmed at 5V for optimal offset and drift at low supply voltages. OPA2251 belongs to the OPAx251 family, trimmed at ±15V for high-supply performance. While both operate across the same full voltage range (2.7V–36V or ±1.35V–±18V), OPA2241PA delivers better offset specs (±250μV max) at 5V, whereas OPA2251 achieves ±100μV max at ±15V-making OPA2241PA preferable for battery-powered 3.3V/5V systems.
OPA2241PA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.01V/µs
- Gain Bandwidth Product:
- 35 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 nA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 25µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OPA2241PA FAQ
1.How can I place an order for OPA2241PA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2241PA 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 OPA2241PA reliable?
The price and inventory of OPA2241PA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2241PA is usually 5 days.
3.What payment methods are accepted for OPA2241PA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2241PA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2241PA?
OPA2241PA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2241PA 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 OPA2241PA?
For technical support, including OPA2241PA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2241PA requirements.
6.How does Aetrix verify that OPA2241PA is sourced from the original manufacturer or authorized distributors?
All OPA2241PA 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 OPA2241PA meets industry standards.
7.What is the process for return or replacement of OPA2241PA?
All OPA2241PA units undergo pre-shipment inspection (PSI). If there is an issue with OPA2241PA, 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 OPA2241PA part is unused and in its original packaging.
Return procedure for OPA2241PA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2241PA 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…
