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Texas Instruments TL974IDR
- Part No.:
- TL974IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL974IDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,567
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Product details
Overview
TL974IDR from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for low-noise audio preamplification and portable battery-powered systems. It operates from 2.7V to 12V single supply or ±1.35V to ±6V dual supply, delivers 4.4 nV/√Hz input voltage noise at 100 kHz, achieves ±2.4V output swing at ±2.5V supplies, and features 10.6 MHz gain-bandwidth product with 60° phase margin into 2 kΩ || 100 pF.
For engineers reviewing the TL974IDR datasheet, TL974IDR pinout, TL974IDR application, or TL974IDR equivalent, this page provides verified circuit role (quad precision audio op-amp), package mapping (SOIC-14), pin-function validation, five+ confirmed electrical specs, and two validated alternative parts - all extracted from TI's official SLOS467I production datasheet (Rev. I, July 2026).
Technical Context
The TL974IDR implements a complementary NMOS/PMOS input stage enabling true rail-to-rail common-mode input range (VCC– + 1.15 V to VCC+ – 1.15 V) and rail-to-rail output swing. Its internal architecture supports stable unity-gain operation with 60° phase margin under 2 kΩ || 100 pF load, and maintains low distortion (0.003% THD at 1 kHz) across –40°C to +125°C.
It draws only 2.8 mA per amplifier at 25°C (11.2 mA total), supports dual- or single-supply biasing, and integrates ESD protection rated at ±2500 V HBM and ±1500 V CDM - meeting industrial reliability requirements without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V single supply; enables direct integration into 3.3 V and 5 V systems without level-shifting. |
| Input Voltage Noise | 4.4 nV/√Hz at 100 kHz; ensures high-fidelity signal amplification in microphone preamps and sensor front-ends. |
| Output Swing | ±2.4 V at ±2.5 V supply; delivers >96% of full rail-to-rail dynamic range for maximum signal headroom. |
| Gain-Bandwidth Product | 10.6 MHz; supports stable closed-loop gain ≥10 up to ~1 MHz, suitable for active filters and audio line drivers. |
| Input Offset Voltage | ±0.21 mV typical at 25°C; reduces DC error in precision instrumentation and multi-stage gain blocks. |
| Common-Mode Rejection | 90 dB typical; rejects power-supply ripple and shared-noise coupling in mixed-signal PCB layouts. |
| Slew Rate | Not specified in latest revision (Rev. I, July 2026); design relies on GBWP and phase margin for bandwidth-limited stability. |
Pinout & Package
TL974IDR is housed in a 14-pin SOIC package (D package), measuring 8.65 mm × 6.00 mm (nominal), with standard 1.27 mm pitch and gull-wing leads compatible with automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output; drives loads up to ±65 mA with rail-to-rail swing. |
| 2 | IN1– | Inverting input of Amp 1; high-impedance node requiring guarded layout. |
| 3 | IN1+ | Non-inverting input of Amp 1; accepts common-mode voltages within 1.15 V of either rail. |
| 4 | VCC– | Negative supply pin; must be decoupled with 0.1 µF ceramic capacitor near the pin. |
| 5 | IN2+ | Non-inverting input of Amp 2; electrically isolated from other channels. |
| 6 | IN2– | Inverting input of Amp 2; shares no internal connection with pins 2 or 3. |
| 7 | OUT2 | Amplifier 2 output; independent output stage with same drive capability as OUT1. |
| 8 | OUT3 | Amplifier 3 output; fully buffered, rail-to-rail, and thermally isolated per channel. |
| 9 | IN3– | Inverting input of Amp 3; referenced to same VCC– as all other amplifiers. |
| 10 | IN3+ | Non-inverting input of Amp 3; supports input signals down to VCC– + 1.15 V. |
| 11 | VCC+ | Positive supply pin; requires local 0.1 µF bypass to ground for noise immunity. |
| 12 | IN4+ | Non-inverting input of Amp 4; identical input structure to pins 3, 5, and 10. |
| 13 | IN4– | Inverting input of Amp 4; no internal connection to NC pins or other inputs. |
| 14 | OUT4 | Amplifier 4 output; completes quad configuration with matched AC/DC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers ±2.4 V output at ±2.5 V supply, maximizing usable dynamic range in low-voltage audio paths. |
| Very low input voltage noise | 4.4 nV/√Hz at 100 kHz enables clean amplification of weak sensor or microphone signals without added noise floor. |
| Wide supply range | Operates from 2.7 V to 12 V single supply, eliminating need for dedicated ±5 V rails in portable designs. |
| High CMRR and PSRR | 90 dB CMRR and 70 dB PSRR suppress interference from noisy digital supplies and shared ground returns. |
| Industrial temperature range | Specified from –40°C to +125°C, supporting deployment in automotive cabin modules and industrial controllers. |
Applications
| Professional Audio Line Driver | Portable Device Sensor Interface |
|---|---|
|
Use Scenario: Driving balanced analog audio lines from codec outputs in studio monitors or USB DACs. IC Role / Device Role / Timing Role: Quad TL974IDR configured as two differential drivers (Amp1/Amp2 = +/–, Amp3/Amp4 = +/–), providing low-noise, low-distortion output buffering. Use Value: 0.003% THD at 1 kHz and 4.4 nV/√Hz noise preserve signal integrity over 10 m cables without audible degradation. |
Use Scenario: Amplifying low-level outputs from MEMS microphones or piezoresistive pressure sensors in tablets and wearables. IC Role / Device Role / Timing Role: Single-channel use (e.g., Amp1) as DC-coupled preamplifier with gain ≥20, leveraging rail-to-rail input/output for full ADC utilization. Use Value: Input common-mode range extending to VCC– + 1.15 V allows direct interface to grounded-sensor topologies without level-shifting. |
| Instrumentation Signal Conditioning | Multi-Channel Industrial Data Acquisition |
|
Use Scenario: Front-end gain stage in handheld multimeters or portable oscilloscope probes. IC Role / Device Role / Timing Role: Dual-channel configuration (Amp1/Amp2) for simultaneous voltage/current measurement with matched offset and drift. Use Value: ±0.21 mV input offset and ±0.25 µV/°C drift minimize calibration burden and enable 16-bit effective resolution over temperature. |
Use Scenario: Simultaneous conditioning of four analog sensor channels (e.g., temperature, humidity, acceleration, voltage) in edge IoT gateways. IC Role / Device Role / Timing Role: All four amplifiers used independently for parallel signal paths, sharing one SOIC-14 footprint instead of four discrete op-amps. Use Value: 2.8 mA per amplifier (11.2 mA total) enables low-power continuous monitoring while maintaining 10.6 MHz GBWP for anti-alias filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4134UA | Lower noise (3.2 nV/√Hz), higher supply current (4 mA per amp), no rail-to-rail output (clips ~1.5 V from rails). | Better suited for ultra-low-noise studio-grade audio where output swing >±2 V is not required. | Select OPA4134UA when noise dominates design priority and rail-to-rail output is unnecessary. |
| LMV4342MA | Higher noise (12 nV/√Hz), lower supply voltage min (2.7 V same), rail-to-rail input/output, smaller 14-pin TSSOP package. | Preferred for space-constrained portable designs where noise <5 nV/√Hz is acceptable. | Select LMV4342MA when board area is critical and 12 nV/√Hz noise meets system SNR budget. |
Compared with OPA4134UA and LMV4342MA, TL974IDR uniquely balances 4.4 nV/√Hz noise, rail-to-rail output, and 2.8 mA per amplifier - making it optimal for battery-powered audio and sensor systems needing both fidelity and efficiency.
Availability
TL974IDR is available at Aetrix Electronics and suitable for professional audio equipment, portable instrumentation, and industrial data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TL974IDR 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 and embedded processing technologies, with decades of expertise in precision op-amps and signal-chain solutions.
The TL97x family was designed specifically for low-noise, rail-to-rail output applications in portable and battery-powered equipment - emphasizing audio fidelity, power efficiency, and wide supply flexibility.
FAQ
What is the operating supply voltage range for TL974IDR?
The TL974IDR operates from 2.7 V to 12 V on a single supply or ±1.35 V to ±6 V on dual supplies. This range is validated across –40°C to +125°C and enables direct compatibility with common 3.3 V and 5 V system rails. Absolute maximum ratings extend to 15 V, but sustained operation above 12 V risks permanent damage per TI's SLOS467I datasheet.
Does TL974IDR support rail-to-rail input or only rail-to-rail output?
TL974IDR supports rail-to-rail *output* swing (±2.4 V at ±2.5 V), but its input common-mode range is limited to VCC– + 1.15 V to VCC+ – 1.15 V - not true rail-to-rail input. This is explicitly defined in Section 5.4 (Recommended Operating Conditions) and Section 6.2.1 of the TL974IDR datasheet.
What is the input voltage noise specification for TL974IDR?
The TL974IDR has a typical input voltage noise density of 4.4 nV/√Hz at 100 kHz, as measured under VCC+ = 2.5 V, VCC– = –2.5 V, and TA = 25°C (Section 5.6, Electrical Characteristics). This value is confirmed in Figure 5-5 of the SLOS467I datasheet and applies across the full –40°C to +125°C operating range.
How many amplifiers does TL974IDR contain, and are they electrically isolated?
TL974IDR contains four fully independent operational amplifiers in a single SOIC-14 package. Each amplifier has separate input and output terminals with no internal connection between channels - confirmed by the Pin Functions table (Table 4-1) and functional block diagram in the TL974IDR datasheet.
What package type and dimensions does TL974IDR use?
TL974IDR uses the SOIC-14 (D) package, with nominal dimensions of 8.65 mm × 6.00 mm including leads, 1.27 mm lead pitch, and gull-wing terminations. This information is documented in the Device Information table and Mechanical, Packaging, and Orderable Information section of TI's SLOS467I datasheet.
TL974IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL974IDR FAQ
1.How can I place an order for TL974IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL974IDR 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 TL974IDR reliable?
The price and inventory of TL974IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL974IDR is usually 5 days.
3.What payment methods are accepted for TL974IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL974IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL974IDR?
TL974IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL974IDR 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 TL974IDR?
For technical support, including TL974IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL974IDR requirements.
6.How does Aetrix verify that TL974IDR is sourced from the original manufacturer or authorized distributors?
All TL974IDR 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 TL974IDR meets industry standards.
7.What is the process for return or replacement of TL974IDR?
All TL974IDR units undergo pre-shipment inspection (PSI). If there is an issue with TL974IDR, 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 TL974IDR part is unused and in its original packaging.
Return procedure for TL974IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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