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Texas Instruments UA747CNG4
- Part No.:
- UA747CNG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
UA747CNG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
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Product details
Overview
UA747CNG4 from Texas Instruments is a dual general-purpose operational amplifier in 14-pin PDIP packaging, featuring ±15V supply operation, ±12V common-mode input range, 0.5 V/μs slew rate, and ±40mA short-circuit output current. It serves as a voltage-follower or active filter building block in industrial signal conditioning systems requiring latch-up immunity and internal frequency compensation.
For engineers reviewing the UA747CNG4 datasheet, UA747CNG4 pinout, UA747CNG4 application, or UA747CNG4 equivalent, key selection criteria include its dual-channel architecture, no-external-compensation design, 0°C to 70°C operating range, and PDIP-14 thermal dissipation rating of 736mW at TA = 70°C.
Technical Context
The UA747CNG4 integrates two independent op-amps with internally compensated high-gain DC amplifiers, enabling stable unity-gain operation without external components. Its differential input stage supports ±30V differential voltage and ±15V absolute input voltage limits relative to supply mid-point.
Each amplifier features short-circuit protected outputs, no latch-up behavior under common-mode transients, and channel separation of 120dB - critical for dual-channel isolation in motor control feedback loops and audio pre-amplifier stages where crosstalk must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±15V - enables rail-to-rail compatible signal handling in dual-supply industrial systems |
| Input Offset Voltage | ±0.3 mV (typ) - ensures low DC error in precision sensor interface applications |
| Common-Mode Range | ±12 V - supports wide-swing inputs without clipping in voltage-follower configurations |
| Slew Rate | 0.5 V/μs - suitable for audio-band and low-frequency control loop applications |
| Short-Circuit Current | ±40 mA - provides robust output protection during fault conditions |
| Supply Current per Amp | 0.35 mA (typ) - enables low-power operation in battery-backed instrumentation |
| Channel Separation | 120 dB - minimizes inter-channel interference in dual-path signal processing |
Pinout & Package
UA747CNG4 is housed in a 14-pin Plastic Dual In-line Package (PDIP-N), measuring 19.3 mm × 9.4 mm including leads. The package is through-hole mountable and RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | Inverting Input (Amp 1 & 2) | Accepts negative-phase signal inputs; referenced to supply midpoint |
| 2, 6 | Non-inverting Input (Amp 1 & 2) | Accepts positive-phase signal inputs; supports full common-mode range |
| 3, 7 | Output (Amp 1 & 2) | Delivers amplified signal with ±40mA short-circuit capability |
| 4 | VCC− (Shared) | Negative supply rail for both amplifiers; internally tied |
| 8, 11 | VCC+ (Shared) | Positive supply rail for both amplifiers; internally connected |
| 9, 10, 12–14 | No Connection | Unused pins; no internal bond wire or circuit connection |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Enables immediate unity-gain stability without added capacitors or resistors |
| Wide common-mode input voltage range | ±12 V allows direct interfacing with sensors operating near supply rails |
| Short-circuit protected outputs | Withstands indefinite output-to-rail shorts without damage or parameter shift |
| No latch-up behavior | Prevents catastrophic failure during input overvoltage or power sequencing anomalies |
| Low quiescent current | 0.35 mA per amplifier reduces thermal load in multi-channel embedded systems |
Applications
| Signal Conditioning | Audio Pre-amplifiers |
|---|---|
Use Scenario: Amplifying low-level analog signals from temperature, pressure, or strain sensors before ADC sampling. IC Role / Device Role / Timing Role: Dual-channel DC-coupled amplifier providing gain, offset correction, and noise rejection. Use Value: ±12V common-mode range accommodates sensor outputs near supply rails; ±0.3mV offset minimizes calibration drift. | Use Scenario: Boosting microphone or line-level audio signals prior to tone control or power amplification. IC Role / Device Role / Timing Role: Low-noise, dual-channel voltage amplifier with unity-gain stability. Use Value: 0.5 V/μs slew rate supports full audio bandwidth up to ~80 kHz; 120dB channel separation prevents stereo crosstalk. |
| Active Filters | Motor Control Circuits |
Use Scenario: Implementing second-order low-pass or band-pass filters in data acquisition front-ends. IC Role / Device Role / Timing Role: Dual op-amp configured as Sallen-Key or state-variable topology. Use Value: Internal compensation eliminates tuning complexity; ±40mA output drives filter capacitor loads directly. | Use Scenario: Generating error amplification and current sensing feedback in H-bridge motor drivers. IC Role / Device Role / Timing Role: Dual amplifier supporting current sense amplification and PWM error comparison. Use Value: No latch-up ensures reliability during back-EMF transients; short-circuit protection safeguards against driver shoot-through faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358N | Single-supply rated (3–32V), lower slew rate (0.3 V/μs), higher input offset (±2mV) | Better suited for 5V/3.3V microcontroller interfaces; less ideal for ±15V legacy industrial systems | Select LM358N only when single-rail operation and cost sensitivity outweigh dual-supply performance needs |
| TL072CP | JFET-input (lower IIB: 65pA), higher slew rate (13 V/μs), wider supply range (±18V) | Superior for high-impedance sensor buffering and wideband audio; requires external compensation | Choose TL072CP when input bias current or bandwidth exceeds UA747CNG4 capabilities |
Compared with LM358N and TL072CP, the UA747CNG4 offers unique value in legacy dual-supply systems requiring guaranteed unity-gain stability, latch-up immunity, and proven long-term reliability - without demanding ultra-low input bias or high-speed response.
Availability
UA747CNG4 is available at Aetrix Electronics and suitable for signal conditioning, audio pre-amplification, and motor control circuits requiring stable component supply across extended production lifecycles.
Supply support for UA747CNG4 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 consumer markets since 1930.
The UA747 product line was designed for general-purpose analog signal processing in industrial control, test equipment, and legacy instrumentation - emphasizing robustness, ease of use, and long-term manufacturability over cutting-edge specs.
FAQ
What is the operating temperature range for UA747CNG4?
The UA747CNG4 is characterized for operation from 0°C to 70°C ambient temperature. This commercial-grade specification aligns with its intended use in non-extreme industrial and laboratory environments. The device's electrical parameters - including input offset voltage, supply current, and output swing - are guaranteed across this full range, as verified in TI's SLOS009B datasheet revision.
Does UA747CNG4 require external compensation components?
No, UA747CNG4 does not require external compensation components. Its internal frequency compensation ensures stable unity-gain operation without added capacitors or resistors. This feature simplifies PCB layout and reduces bill-of-materials count in applications like voltage followers and active filters - a key differentiator confirmed in TI's official features list and pin configuration documentation for UA747CNG4.
What is the maximum continuous power dissipation for UA747CNG4 at 70°C ambient?
At TA = 70°C, the UA747CNG4 has a continuous total power dissipation rating of 736 mW in its PDIP-14 package. This value derives from the 800 mW rating at 25°C, derated at 9.2 mW/°C above 25°C. The calculation (800 mW − 9.2 mW/°C × 45°C) matches TI's published Dissipation Rating table for the N package, ensuring safe thermal operation in enclosed industrial enclosures.
How many functional amplifiers does UA747CNG4 contain?
UA747CNG4 contains two fully independent operational amplifiers in a single 14-pin PDIP package. Each amplifier has dedicated inverting and non-inverting inputs and an output terminal, with shared VCC+ and VCC− supply connections. Pin assignments confirm separate signal paths for Amp 1 (Pins 1, 2, 3) and Amp 2 (Pins 5, 6, 7), enabling dual-channel functionality in compact space-constrained designs.
Is UA747CNG4 RoHS compliant?
Yes, UA747CNG4 is RoHS compliant. TI's Packaging Information Addendum explicitly lists UA747CN (the base part number for UA747CNG4) with "Yes" under the RoHS column. The device uses NiPdAu lead finish and meets EU Directive 2011/65/EU requirements, making it suitable for environmentally regulated industrial and medical equipment deployments where lead-free assembly is mandatory.
UA747CNG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
UA747CNG4 FAQ
1.How can I place an order for UA747CNG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for UA747CNG4 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 UA747CNG4 reliable?
The price and inventory of UA747CNG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UA747CNG4 is usually 5 days.
3.What payment methods are accepted for UA747CNG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UA747CNG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UA747CNG4?
UA747CNG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UA747CNG4 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 UA747CNG4?
For technical support, including UA747CNG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UA747CNG4 requirements.
6.How does Aetrix verify that UA747CNG4 is sourced from the original manufacturer or authorized distributors?
All UA747CNG4 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 UA747CNG4 meets industry standards.
7.What is the process for return or replacement of UA747CNG4?
All UA747CNG4 units undergo pre-shipment inspection (PSI). If there is an issue with UA747CNG4, 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 UA747CNG4 part is unused and in its original packaging.
Return procedure for UA747CNG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UA747CNG4 Tags
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