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Texas Instruments UA741IP
- Part No.:
- UA741IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
UA741IP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,017
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Product details
Overview
UA741IP from Texas Instruments is a general-purpose operational amplifier with offset-voltage null capability, designed for voltage-follower and precision DC-coupled applications. It features ±15 V supply operation, ±12 V common-mode input range, 20–200 V/mV open-loop gain, short-circuit protection, and internal frequency compensation - enabling stable unity-gain operation without external components in industrial signal conditioning circuits.
For engineers reviewing the UA741IP datasheet, UA741IP pinout, UA741IP application, or UA741IP equivalent, key selection considerations include its –40°C to 85°C operating temperature range, 1.7–2.8 mA supply current, 0.5 V/µs slew rate, and compatibility with standard 8-pin PDIP (P) packaging used in legacy analog test equipment and sensor interface designs.
Technical Context
The UA741IP implements a classic bipolar-input op-amp architecture with 22 transistors, 11 resistors, 1 diode, and 1 capacitor. Its internal frequency compensation ensures unconditional stability at unity gain, eliminating need for external compensation networks.
It supports offset nulling via external potentiometer between OFFSET N1 and OFFSET N2 pins, and delivers ±10 V output swing into 2 kΩ loads at ±15 V supplies. Input bias current remains ≤500 nA across its full –40°C to 85°C temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±15 V - supports dual-rail operation in analog front-ends requiring symmetric headroom |
| Input Offset Voltage | 1–6 mV at 25°C - sets baseline DC error in precision amplification stages |
| Common-Mode Input Range | ±12 V - enables rail-to-rail input operation within ±15 V supplies |
| Slew Rate | 0.5 V/µs - limits large-signal bandwidth to ~80 kHz for 10 Vpp outputs |
| Open-Loop Gain | 20–200 V/mV - provides ≥100 dB loop gain at DC for high-accuracy closed-loop configurations |
| Supply Current | 1.7–2.8 mA - enables low-power operation in battery-backed instrumentation |
| Output Short-Circuit Current | ±25 to ±40 mA - protects against sustained overload in sensor driver circuits |
Pinout & Package
UA741IP is supplied in an 8-pin plastic dual-in-line package (PDIP-P), with 0.300-inch body width and through-hole mounting. Pin 1 is OFFSET N1; pin 2 is IN–; pin 3 is IN+; pin 4 is VCC–; pin 5 is OFFSET N2; pin 6 is OUT; pin 7 is VCC+; pin 8 is NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (OFFSET N1) | Offset null input | Connects to one end of external 10 kΩ potentiometer for trimming input offset voltage |
| Pin 2 (IN–) | Inverting input | Primary feedback node in inverting amplifier and active filter topologies |
| Pin 3 (IN+) | Non-inverting input | Reference input for voltage followers and non-inverting gain stages |
| Pin 4 (VCC–) | Negative supply rail | Provides return path for internal current sources and bias networks |
| Pin 5 (OFFSET N2) | Offset null input | Connects to other end of external 10 kΩ potentiometer for balanced null adjustment |
| Pin 6 (OUT) | Amplified output | Drives loads up to ±25 mA; requires external current limiting for sustained short-circuit conditions |
| Pin 7 (VCC+) | Positive supply rail | Supplies internal differential pair and output stage; must be decoupled with 0.1 µF ceramic capacitor |
| Pin 8 (NC) | No internal connection | Not bonded internally; must remain unconnected on PCB to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Internal frequency compensation | Enables stable unity-gain operation without external capacitors - reduces BOM count in basic amplifier circuits |
| Offset-voltage null capability | Allows manual trimming of input offset to <1 mV using external potentiometer - critical for DC-coupled sensor interfaces |
| Short-circuit protection | Limits output current to ±40 mA during fault conditions - prevents thermal runaway in unregulated power supplies |
| No latch-up behavior | Ensures reliable recovery after overvoltage or phase-reversal events - improves robustness in industrial environments |
| Large common-mode input range | Accepts inputs within ±12 V of either supply rail - supports high-side current sensing and level-shifting applications |
Applications
| Industrial Sensor Signal Conditioning | Legacy Test Equipment Amplifiers |
|---|---|
Use Scenario: Amplifying low-level thermocouple or strain gauge outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with offset nulling to reject thermal drift and maintain sub-mV accuracy over temperature. Use Value: ±12 V common-mode range allows direct connection to bridge sensors referenced to system ground or mid-supply rails. | Use Scenario: Output buffer and integrator stage in analog oscilloscope vertical deflection circuits. IC Role / Device Role / Timing Role: Unity-gain voltage follower providing high input impedance and low output impedance drive for CRT deflection plates. Use Value: Internal compensation and 0.5 V/µs slew rate ensure stable step response without peaking in 10–100 kHz sweep generators. |
| DC Motor Speed Control Feedback | Analog Power Supply Error Amplifiers |
Use Scenario: Comparing tachometer voltage against reference in closed-loop motor controllers. IC Role / Device Role / Timing Role: High-gain comparator with hysteresis and offset trim for precise zero-crossing detection. Use Value: 200 V/mV open-loop gain ensures >60 dB loop gain margin at 100 Hz, improving regulation stability under load transients. | Use Scenario: Regulating output voltage in linear bench power supplies using series pass transistor feedback. IC Role / Device Role / Timing Role: Error amplifier comparing sensed output to precision reference, driving base of pass transistor. Use Value: Short-circuit protected output safely handles transient faults during load dump or output short events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM741CP | Same pinout and electrical specs; identical 8-pin PDIP package; TI-licensed second-source part | Identical use cases - no design changes required for drop-in replacement | Preferred when sourcing from multiple authorized distributors to mitigate single-supplier risk |
| TL081CP | JFET-input architecture; higher input impedance (1012 Ω); lower input bias current (30 pA); no offset null pins | Better for high-impedance source buffering; unsuitable where manual offset trimming is required | Select when ultra-low input current is critical and offset nulling is not needed |
Compared with LM741CP, UA741IP offers identical functionality and form factor but is specifically characterized for –40°C to 85°C operation, making it suitable for extended-temperature industrial deployments; TL081CP trades offset adjustability for JFET input performance, requiring circuit redesign if nulling is essential.
Availability
UA741IP is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, legacy test equipment repair, DC motor speed control feedback, analog power supply regulation, and educational electronics labs requiring stable component supply with long-lifecycle support.
Supply support for UA741IP 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 company headquartered in Dallas, Texas, specializing in analog ICs, embedded processors, and digital signal processing technologies.
The UA741IP belongs to TI's legacy general-purpose op-amp product line, originally designed for broad analog signal conditioning in industrial, instrumentation, and educational applications where reliability, ease of use, and proven performance outweigh cutting-edge specs.
FAQ
What is the operating temperature range of the UA741IP?
The UA741IP is specified for operation from –40°C to +85°C, making it suitable for industrial environments where ambient temperatures exceed commercial-grade limits. This extended range is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the SLOS094B datasheet. The UA741IP achieves this via process and packaging optimizations distinct from the 0°C to 70°C UA741CP variant. All key parameters - including input offset voltage, supply current, and output swing - are guaranteed across this full range.
Does the UA741IP require external frequency compensation?
No, the UA741IP does not require external frequency compensation. It incorporates internal dominant-pole compensation, ensuring unconditional stability in unity-gain follower and inverting amplifier configurations. This is explicitly stated in the device description and confirmed by the "No Frequency Compensation Required" feature bullet. The internal compensation sets the gain-bandwidth product at approximately 1 MHz, which aligns with the 0.5 V/µs slew rate and typical open-loop gain roll-off shown in Figure 7 of the SLOS094B datasheet.
How do I connect the offset null pins on the UA741IP?
To null the input offset voltage on the UA741IP, connect a 10 kΩ potentiometer between Pin 1 (OFFSET N1) and Pin 5 (OFFSET N2), with the wiper terminal tied to Pin 4 (VCC–). This configuration is illustrated in Figure 2 of the SLOS094B datasheet. Adjusting the potentiometer minimizes output DC error - typically reducing input offset voltage from 1–6 mV down to <1 mV at 25°C. Ensure the potentiometer is mounted close to the IC and shielded from noise sources to maintain DC stability.
Is the UA741IP pin-compatible with other 741-family op-amps?
Yes, the UA741IP is pin-compatible with industry-standard 741-family op-amps in the same 8-pin PDIP package, including LM741CP, MC1741CP, and NE544CP. Pin assignments - IN– (2), IN+ (3), OUT (6), VCC+ (7), VCC– (4), OFFSET N1 (1), OFFSET N2 (5), and NC (8) - match the JEDEC MS-001 standard for dual-in-line op-amps. However, note that some variants (e.g., JFET-input TL081) share the same footprint but differ electrically and lack offset null pins.
What is the maximum output current capability of the UA741IP?
The UA741IP provides short-circuit output current of ±25 mA minimum and ±40 mA typical at 25°C, as specified in the Electrical Characteristics table under "IOS". This current is internally limited and sustainable indefinitely under short-circuit conditions at temperatures ≤75°C free-air (per Note 4 in Absolute Maximum Ratings). For continuous output into resistive loads, the device delivers ±10 V swing into 2 kΩ (5 mA) and ±12 V into 10 kΩ (1.2 mA), with total power dissipation capped at 85 mW at 25°C.
UA741IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- -
- -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):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
UA741IP FAQ
1.How can I place an order for UA741IP through Aetrix?
Please submit a Request for Quotation (RFQ) for UA741IP 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 UA741IP reliable?
The price and inventory of UA741IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UA741IP is usually 5 days.
3.What payment methods are accepted for UA741IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UA741IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UA741IP?
UA741IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UA741IP 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 UA741IP?
For technical support, including UA741IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UA741IP requirements.
6.How does Aetrix verify that UA741IP is sourced from the original manufacturer or authorized distributors?
All UA741IP 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 UA741IP meets industry standards.
7.What is the process for return or replacement of UA741IP?
All UA741IP units undergo pre-shipment inspection (PSI). If there is an issue with UA741IP, 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 UA741IP part is unused and in its original packaging.
Return procedure for UA741IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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