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Texas Instruments UA741CPSR
- Part No.:
- UA741CPSR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
UA741CPSR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,502
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Product details
Overview
UA741CPSR from Texas Instruments is a general-purpose operational amplifier in an 8-pin SO (PS) package, rated for 0°C to 70°C operation. It delivers ±14.95 V peak output swing into 10 kΩ, 0.5 V/µs slew rate, and 20–200 V/mV open-loop gain with no external frequency compensation required. Its high common-mode input voltage range (±12 V) and short-circuit protection make it suitable for voltage-follower and signal conditioning circuits in industrial analog systems.
For engineers reviewing the UA741CPSR datasheet, UA741CPSR pinout, UA741CPSR application, or UA741CPSR equivalent, key selection criteria include input offset voltage (0.3–6 mV), supply current (0.13–2.8 mA), thermal resistance (119.7 °C/W), and SO package compatibility with automated SMT assembly lines.
Technical Context
The UA741CPSR implements a classic bipolar-input op-amp architecture with internal frequency compensation, eliminating need for external capacitors. Its differential pair input stage supports large common-mode and differential input voltage ranges (±12 V and ±15 V respectively), and its output stage provides ±80 mA short-circuit current capability without latch-up.
It operates from dual supplies of ±5 V to ±15 V, with absolute maximum ratings up to ±18 V. The device features 540 GΩ input resistance and 3 pF input capacitance, enabling high-impedance sensor interfacing while maintaining stability under capacitive loads up to 100 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±15 V - supports standard dual-rail analog power domains |
| Input Offset Voltage | 0.3–6 mV at 25°C - determines DC error in precision amplification stages |
| Slew Rate | 0.5 V/µs - limits full-power bandwidth to ~80 kHz for 10 V output swing |
| Open-Loop Gain | 20–200 V/mV (86–106 dB) - enables stable closed-loop gain ≥100 with margin |
| Common-Mode Range | ±12 V - allows rail-to-rail input operation with ±15 V supplies |
| Output Short-Circuit Current | ±80 mA - sustains fault conditions without damage or latch-up |
| Input Resistance | 540 GΩ - minimizes loading on high-impedance sources like piezoelectric sensors |
Pinout & Package
UA741CPSR uses an 8-pin SO (PS) surface-mount package measuring 6.20 mm × 5.30 mm, optimized for reflow soldering and board space efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OFFSET N1 | External offset null adjustment terminal (no internal connection per Revision H) |
| 2 | IN– | Inverting input - accepts feedback network for stable closed-loop configurations |
| 3 | IN+ | Noninverting input - used for unity-gain buffers and high-Z signal routing |
| 4 | VCC– | Negative supply rail - must be decoupled with 0.1 µF ceramic capacitor |
| 5 | OFFSET N2 | External offset null adjustment terminal (no internal connection per Revision H) |
| 6 | OUT | Amplified output - drives loads ≥2 kΩ with ±10 V swing or ≥10 kΩ with ±12 V swing |
| 7 | VCC+ | Positive supply rail - requires local 0.1 µF bypass to ground for noise immunity |
| 8 | NC | No internal connection - left unconnected; not used for thermal or electrical functions |
Key Features
| Feature | Design Value |
|---|---|
| No external compensation required | Internally compensated for unity-gain stability - eliminates layout-sensitive capacitor placement |
| Short-circuit protection | Withstands indefinite output-to-rail shorts at ±80 mA - prevents thermal runaway during fault conditions |
| Large common-mode input range | ±12 V with ±15 V supplies - enables direct interfacing with transducers operating near supply rails |
| No latch-up behavior | Bipolar process ensures robust operation under overvoltage or reverse-bias transients |
| High input resistance | 540 GΩ - preserves signal integrity in pH probes, photodiode, and thermocouple front-ends |
Applications
| Audio Signal Conditioning | Voltage-Follower Buffer |
|---|---|
Use Scenario: Amplifying low-level microphone signals in pro audio mixers before ADC sampling. IC Role / Device Role / Timing Role: Noninverting amplifier with gain = 100, configured using precision resistors to minimize THD. Use Value: 0.5 V/µs slew rate and ±14.95 V output swing ensure clean reproduction of 20 kHz sine waves at line level. | Use Scenario: Isolating high-impedance sensor outputs (e.g., strain gauge bridges) from downstream circuitry. IC Role / Device Role / Timing Role: Unity-gain buffer with high input impedance preserving bridge balance and minimizing loading error. Use Value: 540 GΩ input resistance and ±12 V common-mode range maintain accuracy across full temperature range (0°C–70°C). |
| DVD Player Analog Output Stage | Industrial Sensor Interface |
Use Scenario: Driving composite video signals from DVD player DACs to RCA connectors. IC Role / Device Role / Timing Role: Low-distortion output driver with DC-coupled configuration and 75 Ω source termination. Use Value: ±10 V swing into 2 kΩ and 0.3–6 mV input offset enable <0.5% DC error in video black-level reference generation. | Use Scenario: Conditioning thermistor or RTD signals in HVAC control panels with 24 V DC power rails. IC Role / Device Role / Timing Role: Differential amplifier with matched resistor network rejecting common-mode noise on long sensor cables. Use Value: 70–90 dB CMRR and ±15 V differential input rating suppress 50/60 Hz interference in electrically noisy environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | Single-supply capable (3–32 V), lower input offset (2 mV typ), but only 0.3 V/µs slew rate and no dual-supply symmetry | Preferred for battery-powered or 3.3 V/5 V microcontroller interfaces where negative rail is unavailable | Select LM358DR when single-rail operation and lower quiescent current (0.7 mA) outweigh dual-supply performance needs |
| TL072CDR | JFET-input (80 pA bias current), higher slew rate (13 V/µs), wider bandwidth (3 MHz), but requires ±12 V minimum supply | Better suited for high-frequency audio preamps or active filters needing low noise and fast settling | Choose TL072CDR when input bias current <1 nA and >10× faster response are critical, accepting tighter supply constraints |
Compared with LM358DR and TL072CDR, the UA741CPSR offers balanced dual-supply performance, proven reliability in legacy industrial designs, and tolerance to wide supply variations (±5 V to ±15 V), making it optimal for retrofitting or cost-sensitive analog subsystems where moderate speed suffices.
Availability
UA741CPSR is available at Aetrix Electronics and suitable for pro audio mixers, DVD player analog output stages, industrial sensor interfaces, and voltage-follower buffer circuits requiring stable component supply across extended production lifecycles.
Supply support for UA741CPSR 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, embedded processing, and digital signal technologies, with decades of op-amp innovation.
The UA741 product line was designed for broad-spectrum analog signal conditioning in industrial, consumer, and test equipment-emphasizing ruggedness, ease of use, and compatibility with legacy designs.
FAQ
What is the operating temperature range of the UA741CPSR?
The UA741CPSR is characterized for operation from 0°C to 70°C ambient temperature. This commercial-grade specification aligns with its intended use in non-automotive, non-military applications such as consumer electronics and industrial control panels. Electrical parameters like input offset voltage and supply current are guaranteed across this full range, and thermal resistance (119.7 °C/W) enables reliable operation with standard PCB copper area.
Does the UA741CPSR require external frequency compensation?
No, the UA741CPSR does not require external frequency compensation. It features internal compensation optimized for unity-gain stability across its specified operating conditions. This eliminates the need for external capacitors in standard inverting or noninverting configurations, simplifying layout and reducing bill-of-materials count. The design ensures phase margin remains sufficient even with capacitive loads up to 100 pF.
What is the maximum output voltage swing for UA741CPSR at ±15 V supplies?
At ±15 V supplies and 25°C, the UA741CPSR delivers a typical maximum peak output voltage swing of ±14.95 V into a 10 kΩ load, and ±10 V into a 2 kΩ load. These values reflect real-world drive capability under linear operation; output clipping begins beyond these limits. Full-range specifications (0°C–70°C) guarantee ±12 V swing into 10 kΩ and ±10 V into 2 kΩ, ensuring consistent performance across temperature.
Can UA741CPSR be used with single-supply operation?
The UA741CPSR is designed for dual-supply operation (e.g., ±5 V to ±15 V) and does not support true single-supply functionality. Its input common-mode range and output swing are referenced to ground only when symmetric rails are applied. Attempting single-supply use (e.g., 0 V and +15 V) results in severely limited input range and degraded output swing. For single-rail applications, TI recommends alternatives like LM358DR or TLV2462.
What is the pin 1 function on UA741CPSR, and is it connected internally?
Pin 1 of the UA741CPSR is labeled OFFSET N1 in the functional diagram but is designated "No internal connection" (NC) per Revision H of the official datasheet (SLOS094H). This change reflects updated silicon characterization confirming no internal bond wire or circuit node exists at that pad. Engineers must leave pin 1 unconnected; applying voltage or tying it to any potential violates the device's validated operating conditions.
UA741CPSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.7mA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
UA741CPSR FAQ
1.How can I place an order for UA741CPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for UA741CPSR 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 UA741CPSR reliable?
The price and inventory of UA741CPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UA741CPSR is usually 5 days.
3.What payment methods are accepted for UA741CPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UA741CPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UA741CPSR?
UA741CPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UA741CPSR 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 UA741CPSR?
For technical support, including UA741CPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UA741CPSR requirements.
6.How does Aetrix verify that UA741CPSR is sourced from the original manufacturer or authorized distributors?
All UA741CPSR 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 UA741CPSR meets industry standards.
7.What is the process for return or replacement of UA741CPSR?
All UA741CPSR units undergo pre-shipment inspection (PSI). If there is an issue with UA741CPSR, 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 UA741CPSR part is unused and in its original packaging.
Return procedure for UA741CPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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