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Texas Instruments UA741CD
- Part No.:
- UA741CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UA741CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:165
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Product details
Overview
UA741CD from Texas Instruments is a general-purpose operational amplifier in SOIC-8 package, featuring ±15 V supply operation, 0.3 mV typical input offset voltage, 540 GΩ input resistance, and short-circuit protection. It operates across 0°C to 70°C and serves as a voltage follower or basic gain stage in analog signal conditioning circuits.
For engineers reviewing the UA741CD datasheet, UA741CD pinout, UA741CD application, or UA741CD equivalent, key selection criteria include input offset voltage stability over temperature, absence of external frequency compensation requirements, common-mode input range (±12 V), output swing capability into 2 kΩ loads (±10 V), and SOIC-8 thermal performance (RθJA = 138.7°C/W).
Technical Context
The UA741CD implements a classic bipolar-input op-amp architecture with internal frequency compensation, eliminating need for external compensation components. Its high common-mode input voltage range (±12 V) and latch-up immunity support robust operation in non-inverting configurations.
It delivers 0.5 V/µs slew rate and 20 V/mV large-signal differential voltage amplification at 25°C with ±15 V supplies, while maintaining 70 dB minimum common-mode rejection ratio across its operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±15 V - supports dual-rail analog systems without rail-to-rail constraints |
| Input Offset Voltage (TYP) | 0.3 mV at 25°C - enables low-error DC-coupled amplification in precision sensor interfaces |
| Input Resistance | 540 GΩ - minimizes loading on high-impedance sources like piezoelectric sensors |
| Slew Rate | 0.5 V/µs - limits usable bandwidth for large-signal step responses to ~80 kHz |
| Common-Mode Input Range | ±12 V - allows direct interfacing with signals referenced to mid-supply in ±15 V systems |
| Output Short-Circuit Current | ±80 mA - provides inherent fault tolerance during transient overloads |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded instrumentation and audio equipment |
Pinout & Package
UA741CD uses an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm with standard JEDEC MS-012AC footprint and Level-1 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No internal connection (NC) | Unused terminal - must be left floating; no offset null function in this variant |
| 2 | Inverting input (IN–) | Primary feedback node for closed-loop configurations; high-impedance bipolar input |
| 3 | Noninverting input (IN+) | Reference input for voltage-follower or noninverting amplifier topologies |
| 4 | Negative supply (VCC–) | Connects to system ground or negative rail; establishes lower bias reference |
| 5 | No internal connection (NC) | Unused terminal - no offset adjustment capability per Revision H datasheet |
| 6 | Output (OUT) | Class-B output stage capable of ±10 V swing into 2 kΩ load |
| 7 | Positive supply (VCC+) | Connects to +5 V to +15 V rail; powers internal differential pair and output stage |
| 8 | No internal connection (NC) | Unused terminal - not bonded; requires no external connection |
Key Features
| Feature | Design Value |
|---|---|
| Internal frequency compensation | Enables stable unity-gain operation without external capacitor - reduces BOM count and layout complexity |
| Short-circuit protection | Withstands indefinite output-to-rail shorts - eliminates need for external current-limiting resistors in test fixtures |
| No latch-up behavior | Prevents destructive failure during input overvoltage transients - improves reliability in unregulated environments |
| Large common-mode input range | ±12 V at ±15 V supplies - supports direct sensing of signals near supply rails without level-shifting |
| High input resistance | 540 GΩ - preserves signal integrity from microamp-level sources such as photodiodes or thermocouples |
Applications
| Audio Signal Conditioning | DVD Player Analog Output Stage |
|---|---|
Use Scenario: Amplifying line-level audio signals before DAC output filtering in consumer audio equipment. IC Role / Device Role / Timing Role: Noninverting buffer with gain = 1 to isolate DAC output impedance from downstream RC filters. Use Value: 0.5 V/µs slew rate ensures faithful reproduction of 20 kHz sine waves without distortion; ±10 V output swing drives 10 kΩ loads compliant with IEC 60268-3 standards. | Use Scenario: Generating composite video sync pulses and blanking levels in DVD playback subsystems. IC Role / Device Role / Timing Role: Precision comparator and pulse shaper using open-loop configuration with hysteresis. Use Value: 70 dB CMRR rejects power supply noise during horizontal sync generation; ±12 V common-mode range accommodates TTL-compatible logic thresholds. |
| Pro Audio Mixer Input Stage | Industrial Sensor Signal Buffering |
Use Scenario: Pre-amplifying microphone-level signals prior to digital conversion in professional mixing consoles. IC Role / Device Role / Timing Role: Inverting amplifier with adjustable gain (10–100×) using external feedback network. Use Value: 0.3 mV typical input offset voltage minimizes DC error accumulation across cascaded stages; 540 GΩ input resistance prevents loading of transformer-coupled mic inputs. | Use Scenario: Isolating and scaling thermistor or RTD bridge outputs in HVAC control modules. IC Role / Device Role / Timing Role: Voltage-follower configured to eliminate source impedance effects on bridge balance measurement. Use Value: Latch-up immunity prevents catastrophic failure during ESD events near HVAC ducts; ±12 V common-mode range matches bridge excitation voltages. |
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 rated (3–32 V), lower input offset (2 mV typ), rail-to-rail output not supported | Better suited for battery-powered systems requiring single-rail operation | Select when designing for 5 V or 3.3 V microcontroller-based signal chains |
| TL072CDR | JFET-input (50 pA bias current), higher slew rate (13 V/µs), wider bandwidth (3 MHz GBW) | Preferred for high-fidelity audio preamps where low noise and wide bandwidth are critical | Choose when upgrading from UA741CD in pro-audio designs needing lower distortion |
Compared with LM358DR and TL072CDR, the UA741CD offers superior input resistance (540 GΩ vs. 2 MΩ and 1012 Ω respectively) and proven stability in legacy industrial designs, but lacks rail-to-rail operation and modern low-noise performance - making it optimal for cost-sensitive, dual-supply analog subsystems where legacy compatibility matters.
Availability
UA741CD is available at Aetrix Electronics and suitable for audio signal conditioning, DVD player analog output stages, pro audio mixer input stages, and industrial sensor signal buffering requiring stable component supply across extended production lifecycles.
Supply support for UA741CD 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The UA741CD belongs to TI's legacy µA741 family - designed specifically for general-purpose analog signal amplification and conditioning in commercial-grade applications where simplicity, robustness, and long-term availability are prioritized over ultra-low noise or high-speed performance.
FAQ
What is the maximum supply voltage for UA741CD?
The UA741CD has an absolute maximum supply voltage rating of ±18 V, but its recommended operating range is ±5 V to ±15 V. Operation beyond ±15 V increases input offset drift and reduces long-term reliability. The UA741CD datasheet specifies electrical characteristics only up to ±15 V, and exceeding this may cause permanent damage per Section 5.1 Absolute Maximum Ratings.
Does UA741CD support input offset voltage trimming?
No, the UA741CD does not support input offset voltage trimming. Per Revision H of the TI datasheet (SLOS094H), pins 1 and 5 are designated "No internal connection (NC)" - unlike earlier µA741 variants that included offset-null functionality. This change was confirmed in the January 2026 revision history, which explicitly states deletion of offset-voltage null capability for the D-package UA741CD variant.
What is the thermal resistance of UA741CD in SOIC-8 package?
The UA741CD in SOIC-8 (D) package has a junction-to-ambient thermal resistance (RθJA) of 138.7°C/W, a junction-to-case (top) value of 78.7°C/W, and a junction-to-board value of 82.2°C/W. These values are measured under standard JEDEC JESD51-2 conditions and define the device's ability to dissipate heat in typical PCB layouts with 2 oz copper and minimal copper pour.
Can UA741CD operate with a single supply?
Yes, the UA741CD can operate with a single supply, provided the input common-mode and output voltage ranges remain within specification. For example, with VCC+ = +10 V and VCC– = 0 V, the input must stay between +2 V and +8 V (per ±12 V common-mode range referenced to midpoint), and output swing is limited to approximately +2 V to +8 V into 10 kΩ. Bypass capacitors and proper biasing are required to maintain stability in single-supply mode.
What is the typical input bias current of UA741CD?
The typical input bias current of UA741CD is 0.01 nA (10 pA) at 25°C, with a maximum of 800 nA across the full 0°C to 70°C operating range. This value reflects the bipolar input transistor base leakage and is significantly lower than older µA741 revisions due to process improvements documented in Revision H (January 2026), where the typ value was updated from 80 nA to 0.01 nA.
UA741CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-SOIC
UA741CD FAQ
1.How can I place an order for UA741CD through Aetrix?
Please submit a Request for Quotation (RFQ) for UA741CD 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 UA741CD reliable?
The price and inventory of UA741CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UA741CD is usually 5 days.
3.What payment methods are accepted for UA741CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UA741CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UA741CD?
UA741CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UA741CD 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 UA741CD?
For technical support, including UA741CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UA741CD requirements.
6.How does Aetrix verify that UA741CD is sourced from the original manufacturer or authorized distributors?
All UA741CD 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 UA741CD meets industry standards.
7.What is the process for return or replacement of UA741CD?
All UA741CD units undergo pre-shipment inspection (PSI). If there is an issue with UA741CD, 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 UA741CD part is unused and in its original packaging.
Return procedure for UA741CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UA741CD Tags
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