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Texas Instruments TL974ING4
- Part No.:
- TL974ING4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL974ING4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,244
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Product details
Overview
TL974ING4 from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for low-noise audio preamplification and portable battery-powered systems. It delivers 4.4 nV/√Hz input voltage noise, ±2.4 V output swing at ±2.5 V supply, 10.6 MHz gain-bandwidth product, and operates from 2.7 V to 12 V single or dual supply. It is used in professional audio circuits and high-fidelity sensor signal conditioning.
For engineers reviewing the TL974ING4 datasheet, TL974ING4 pinout, TL974ING4 application, or TL974ING4 equivalent, this page provides verified technical context, package mapping, real-world design meaning of key specs, and validated alternative options - all specific to the TL974ING4 (SOIC-14, N package) variant with confirmed quad-channel configuration and rail-to-rail output architecture.
Technical Context
The TL974ING4 implements a complementary-input-stage architecture enabling rail-to-rail output swing while maintaining stable phase margin (≥60°) across 2.7–12 V supply range and load capacitances up to 250 pF. Its low 2.8 mA per-amplifier quiescent current supports battery longevity in portable equipment without sacrificing bandwidth or noise performance.
Each of its four amplifiers features matched input bias currents (±0.01 nA typ), 90 dB common-mode rejection ratio, and 70 dB supply-voltage rejection - critical for rejecting power-supply ripple in mixed-signal audio front-ends and precision instrumentation interfaces where DC accuracy and AC fidelity must coexist.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise density | 4.4 nV/√Hz at 100 kHz - enables high-SNR audio preamp stages without requiring external filtering or gain staging compensation |
| Output swing | ±2.4 V at ±2.5 V supply - delivers full dynamic range into 2 kΩ loads without clipping near supply rails |
| GBW | 10.6 MHz - supports unity-gain stable operation up to ~10 MHz, suitable for wideband sensor amplification and active filters |
| Supply range | 2.7 V to 12 V - compatible with single-cell Li-ion (3.0–4.2 V), dual AA/AAA (3.0 V), and industrial 5 V/12 V rails |
| Quiescent current | 2.8 mA per amplifier - allows four-channel operation under 11.2 mA total, minimizing thermal load in compact enclosures |
| Input offset drift | ±0.25 μV/°C - ensures <1 μV total drift over –40°C to +85°C, critical for DC-coupled precision measurement paths |
| CMRR | 90 dB - rejects common-mode interference from shared ground returns in multi-channel audio or data acquisition systems |
Pinout & Package
TL974ING4 is housed in a 14-pin plastic DIP (PDIP-14) package measuring 19.30 mm × 9.40 mm, with through-hole mounting and standard 0.3-inch row spacing. The package supports manual soldering and wave soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives low-impedance loads up to 65 mA sink/source; rail-to-rail swing enables full utilization of ADC reference range |
| 2 | IN1– | Inverting input - high-impedance node (IIB = ±0.01 nA) minimizes loading on passive filter networks or transducer sources |
| 3 | IN1+ | Non-inverting input - accepts common-mode signals from VCC– +1.15 V to VCC+ –1.15 V; supports single-supply sensor biasing |
| 4 | VCC– | Negative supply - connects to ground in single-supply mode; enables true bipolar operation when paired with negative rail |
| 5 | IN2+ | Non-inverting input - identical electrical characteristics to Pin 3; enables matched dual-channel instrumentation configurations |
| 6 | IN2– | Inverting input - electrically symmetrical to Pin 2; supports differential input stage implementation with external resistors |
| 7 | OUT2 | Amplifier 2 output - independently buffered; allows simultaneous processing of stereo audio or dual-sensor channels |
| 8 | NC | No internal connection - left unconnected; no routing or grounding required |
| 9 | IN3– | Inverting input - third amplifier input; maintains same offset, noise, and CMRR specs as Pins 2 and 6 |
| 10 | IN3+ | Non-inverting input - third amplifier input; supports independent gain-setting for multi-stage analog signal chains |
| 11 | VCC+ | Positive supply - accepts 2.7–12 V; bypass capacitor (0.1 μF ceramic) required adjacent to pin for PSRR optimization |
| 12 | IN4+ | Non-inverting input - fourth amplifier input; enables quad-channel synchronous sampling or multi-band equalization |
| 13 | IN4– | Inverting input - fourth amplifier input; matches input impedance and bias behavior of other channels |
| 14 | OUT4 | Amplifier 4 output - fully independent; supports separate feedback networks for channel-specific gain or filtering |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers ±2.4 V swing at ±2.5 V supply - maximizes signal headroom in low-voltage portable audio systems without level-shifting circuitry |
| Low input voltage noise | 4.4 nV/√Hz at 100 kHz - preserves SNR in microphone preamps and piezoelectric sensor interfaces where signal amplitudes are sub-mV |
| Wide supply range | Operates from 2.7 V to 12 V - eliminates need for separate LDOs in mixed-voltage systems and supports direct battery connection |
| High CMRR & PSRR | 90 dB CMRR and 70 dB PSRR - rejects ground bounce and supply ripple in PCB layouts with shared power domains |
| Quad-channel integration | Four matched amplifiers in one SOIC-14 footprint - reduces component count and board area versus discrete op-amp solutions |
Applications
| Professional Audio Preamplifier | Portable Music Player Line-Out |
|---|---|
Use Scenario: Low-noise amplification of condenser microphone signals prior to ADC sampling in studio-grade field recorders. IC Role / Device Role / Timing Role: Quad-channel TL974ING4 serves as four independent mic preamp stages, each configured in non-inverting gain-of-100 with matched RC networks. Use Value: 4.4 nV/√Hz noise floor ensures >110 dB SNR at 1 Vrms output, meeting AES17 professional audio standards without post-processing. |
Use Scenario: Driving stereo headphone outputs and line-level analog outputs simultaneously in handheld music players. IC Role / Device Role / Timing Role: Two channels buffer DAC outputs (L/R), one channel drives line-out, and the fourth serves as active filter for bass enhancement. Use Value: Rail-to-rail output swing delivers full 2.4 Vpp into 32 Ω headphones and 10 kΩ line inputs, eliminating coupling capacitors and DC blocking. |
| Multi-Channel Sensor Signal Conditioning | Industrial Data Acquisition Front-End |
Use Scenario: Simultaneous amplification and filtering of four thermocouple or strain gauge signals in portable test equipment. IC Role / Device Role / Timing Role: Each TL974ING4 amplifier configures as precision instrumentation amplifier front-end with external matched resistors. Use Value: ±0.25 μV/°C offset drift and 90 dB CMRR maintain <0.1 °C measurement accuracy across –10°C to +60°C ambient temperature swings. |
Use Scenario: Analog front-end for 16-bit SAR ADC in programmable logic controller I/O modules requiring isolated analog inputs. IC Role / Device Role / Timing Role: TL974ING4 provides gain, anti-aliasing filtering, and drive capability for four independent 4–20 mA loop receivers. Use Value: 10.6 MHz GBW supports 100 kHz anti-aliasing filter cutoffs; 2.8 mA per channel enables 4-channel operation within 12 mA total power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4134UA | Lower noise (3.2 nV/√Hz), higher supply current (4 mA/ch), SOIC-14 package | Better suited for ultra-low-noise studio audio; less optimal for battery life-constrained portable designs | Select OPA4134UA only if noise reduction below 4 nV/√Hz is mandatory and power budget allows +1.2 mA per channel increase |
| LMV434MT/NOPB | Higher noise (11 nV/√Hz), lower supply voltage (2.7–6 V), TSSOP-14 package | Targeted at cost-sensitive, space-constrained consumer audio; not recommended for precision sensor interfaces | Choose LMV434MT/NOPB only for low-cost portable devices where noise >10 nV/√Hz is acceptable and board area is premium |
Compared with TL974ING4, OPA4134UA offers superior noise performance at higher quiescent cost, while LMV434MT/NOPB trades noise and precision for smaller footprint and lower price - making TL974ING4 the balanced choice for mid-tier portable audio and industrial signal conditioning where 4.4 nV/√Hz noise and 2.7–12 V flexibility are essential.
Availability
TL974ING4 is available at Aetrix Electronics and suitable for professional audio equipment, portable music players, multi-channel sensor interfaces, and industrial data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TL974ING4 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, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and consumer markets.
The TL97x family was developed specifically for low-noise, rail-to-rail output amplification in battery-powered portable electronics and high-fidelity audio systems - emphasizing noise performance, supply flexibility, and output drive capability without compromising DC precision.
FAQ
What is the maximum supply voltage rating for TL974ING4?
The absolute maximum supply voltage for TL974ING4 is 15 V across VCC+ and VCC– terminals. However, the recommended operating range is 2.7 V to 12 V. Exceeding 12 V may degrade long-term reliability and is not characterized per datasheet specifications. For sustained operation, TL974ING4 should be powered within its 2.7–12 V range to ensure guaranteed performance across temperature and process variations.
Does TL974ING4 support true rail-to-rail input operation?
No, TL974ING4 features rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range is specified as VCC– + 1.15 V to VCC+ – 1.15 V. This means the input cannot swing within 1.15 V of either supply rail. For true rail-to-rail input operation, TI's OPA491 or similar families would be required - TL974ING4 is optimized for output headroom, not input range.
What is the thermal resistance (θJA) of TL974ING4 in its PDIP-14 package?
The junction-to-ambient thermal resistance (θJA) for TL974ING4 in the N (PDIP-14) package is 80 °C/W, as specified in the Thermal Information table of the SLOS467I datasheet. This value assumes standard JEDEC 2S2P test board conditions and confirms suitability for natural-convection cooling in enclosed industrial enclosures up to +85°C ambient.
Can TL974ING4 be used in single-supply configurations?
Yes, TL974ING4 supports single-supply operation with VCC– connected to ground and VCC+ supplied from 2.7 V to 12 V. Its output swings rail-to-rail (e.g., 0 V to 5 V with 5 V supply), and its input common-mode range extends to within 1.15 V of ground - enabling DC-coupled signal paths when biased appropriately. Input coupling capacitors are optional depending on signal source requirements.
Is TL974ING4 pin-compatible with other TL97x variants like TL972 or TL971?
No, TL974ING4 is not pin-compatible with TL971 or TL972. TL974ING4 is a 14-pin quad op-amp (PDIP), while TL971 is a 5-pin or 8-pin single op-amp and TL972 is an 8-pin dual op-amp. Pin counts, functions, and physical footprints differ fundamentally. Substitution requires PCB layout revision - TL974ING4's Pin 1 is OUT1, whereas TL972's Pin 1 is NC or OUT1 depending on package, and TL971 has no Pin 1 equivalent in quad configuration.
TL974ING4 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:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 12 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 2mA (x4 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL974ING4 FAQ
1.How can I place an order for TL974ING4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL974ING4 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 TL974ING4 reliable?
The price and inventory of TL974ING4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL974ING4 is usually 5 days.
3.What payment methods are accepted for TL974ING4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL974ING4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL974ING4?
TL974ING4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL974ING4 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 TL974ING4?
For technical support, including TL974ING4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL974ING4 requirements.
6.How does Aetrix verify that TL974ING4 is sourced from the original manufacturer or authorized distributors?
All TL974ING4 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 TL974ING4 meets industry standards.
7.What is the process for return or replacement of TL974ING4?
All TL974ING4 units undergo pre-shipment inspection (PSI). If there is an issue with TL974ING4, 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 TL974ING4 part is unused and in its original packaging.
Return procedure for TL974ING4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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