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Texas Instruments TL972IPG4
- Part No.:
- TL972IPG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL972IPG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,439
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Product details
Overview
TL972IPG4 from Texas Instruments is a dual 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 high-fidelity headphone amplifiers and sensor signal conditioning stages.
For engineers reviewing the TL972IPG4 datasheet, TL972IPG4 pinout, TL972IPG4 application, or TL972IPG4 equivalent, key selection criteria include its rail-to-rail output capability under low-voltage operation, verified 4.4 nV/√Hz noise floor at 100 kHz, guaranteed –40°C to +125°C performance, and compatibility with space-constrained PCB layouts using the PDIP-8 package.
Technical Context
The TL972IPG4 implements a complementary-input-stage architecture enabling true rail-to-rail output swing while maintaining stable phase margin (≥60°) across 2.7–12 V supply range. Its input stage uses paralleled NMOS and PMOS differential pairs to extend common-mode range to both rails, with transition region management between (V+)–2 V and (V+)–1 V.
It supports unity-gain stable operation into capacitive loads up to 250 pF without external isolation resistors, and features 125 dB large-signal voltage gain, 90 dB CMRR, and 70 dB PSRR - all specified over full industrial temperature range with no derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 4.4 nV/√Hz at 100 kHz - enables high-resolution audio preamp design without audible hiss |
| Output Swing | ±2.4 V at ±2.5 V supply - delivers >96% of full rail-to-rail dynamic range for maximum SNR |
| Supply Range | 2.7 V to 12 V - supports single-supply 3.3 V/5 V logic and dual-supply ±2.5 V/±5 V analog systems |
| Gain-Bandwidth | 10.6 MHz - allows stable closed-loop gain ≥10 at 1 MHz for anti-aliasing filter buffering |
| Input Offset Drift | ±0.25 µV/°C - ensures <1 µV total drift over 0–70°C ambient, critical for precision DC-coupled sensors |
| CMRR | 90 dB - rejects common-mode interference in noisy industrial environments |
| PSRR | 70 dB - suppresses power supply ripple in mixed-signal PCBs with shared LDOs |
Pinout & Package
The TL972IPG4 is housed in an 8-pin Plastic Dual In-line Package (PDIP), measuring 9.81 mm × 9.43 mm, with through-hole mounting and industry-standard lead pitch (2.54 mm). This package provides robust thermal dissipation (θJA = 85°C/W) and mechanical stability for prototyping and legacy industrial designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives low-impedance loads up to ±65 mA with rail-to-rail swing |
| 2 | IN1– | Inverting input - accepts differential signals with 1.15 V headroom from each rail |
| 3 | IN1+ | Non-inverting input - high-impedance node (IIB = ±0.01 nA) for sensor interfacing |
| 4 | VCC– | Negative supply - connects to ground (single supply) or negative rail (dual supply) |
| 5 | VCC+ | Positive supply - accepts 2.7–12 V with internal ESD protection (±2500 V HBM) |
| 6 | IN2+ | Non-inverting input - independent channel for stereo or dual-sensor signal paths |
| 7 | IN2– | Inverting input - matched to IN1– for consistent common-mode rejection |
| 8 | OUT2 | Amplifier 2 output - fully independent channel with identical AC/DC specs as OUT1 |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers ±2.4 V swing at ±2.5 V supply - preserves full dynamic range in low-voltage audio chains |
| Low-noise architecture | 4.4 nV/√Hz input voltage noise at 100 kHz - meets THD < 0.003% in professional audio preamps |
| Wide supply range | Operates from 2.7 V to 12 V - eliminates need for separate analog rails in battery-powered IoT nodes |
| High CMRR & PSRR | 90 dB CMRR and 70 dB PSRR - maintains accuracy in electrically noisy factory-floor instrumentation |
| Thermal stability | Specified over –40°C to +125°C - supports automotive cabin and industrial motor-control ambient conditions |
Applications
| Headphone Amplifier | Portable Music Player Front-End |
|---|---|
Use Scenario: Driving 16 Ω stereo headphones from a 3.3 V microcontroller DAC output. IC Role / Device Role / Timing Role: Dual-channel buffer and level-shifting amplifier providing rail-to-rail output swing and low-noise gain. Use Value: Enables >100 dB SNR with 4.4 nV/√Hz noise floor and ±2.4 V swing at 3.3 V supply, eliminating external DC-blocking capacitors. | Use Scenario: Preconditioning MEMS microphone signals before ADC sampling in a tablet. IC Role / Device Role / Timing Role: Low-noise, low-distortion instrumentation amplifier with adjustable gain. Use Value: Delivers 0.003% THD at 1 kHz and 90 dB CMRR to reject board-level digital switching noise near the mic input. |
| Industrial Sensor Signal Conditioning | Professional Audio Line Driver |
Use Scenario: Amplifying millivolt-level thermocouple outputs in a PLC analog input module. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with ultra-low offset drift and high PSRR. Use Value: ±0.25 µV/°C drift and 70 dB PSRR ensure <1 µV error over temperature and immunity to 50/60 Hz supply coupling. | Use Scenario: Buffering balanced line outputs in a studio mixer with 600 Ω termination. IC Role / Device Role / Timing Role: Unity-gain stable, low-output-impedance driver with wide bandwidth. Use Value: 10.6 MHz GBW and ±65 mA output drive support fast settling into reactive loads without overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376AIDR | Lower noise (4.2 nV/√Hz), higher quiescent current (1.6 mA per amp vs. 2.8 mA), same PDIP-8 footprint | Better suited for ultra-low-power battery monitoring where noise dominates over supply current | Select OPA2376AIDR when sub-1 µA input bias and lower noise outweigh supply current penalty |
| LMV722MMX/NOPB | Higher noise (11 nV/√Hz), lower GBW (1.2 MHz), smaller SC70-8 package, lower cost | Targeted at cost-sensitive consumer audio where 100 dB SNR is sufficient | Choose LMV722MMX/NOPB for non-critical audio buffering where PCB area and BOM cost are primary constraints |
Compared with OPA2376AIDR and LMV722MMX/NOPB, the TL972IPG4 uniquely balances ultra-low noise, rail-to-rail output, and wide supply range in a through-hole package - making it optimal for legacy test equipment upgrades and ruggedized portable instrumentation where reliability and layout simplicity are prioritized.
Availability
TL972IPG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable audio front-ends, and professional audio line drivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL972IPG4 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TL97x family was designed specifically for high-fidelity, low-voltage analog signal chains - emphasizing rail-to-rail output, ultra-low noise, and robust operation across –40°C to +125°C for portable and harsh-environment applications.
FAQ
What is the maximum supply voltage rating for TL972IPG4?
The TL972IPG4 has an absolute maximum supply voltage rating of 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 operation above 15 V risks permanent damage per the Absolute Maximum Ratings table in the official datasheet. The TL972IPG4 must never be operated outside these limits during design or testing.
Does TL972IPG4 support single-supply operation?
Yes, the TL972IPG4 supports true single-supply operation from 2.7 V to 12 V. Its input common-mode range extends to within 1.15 V of each rail, and its output swings rail-to-rail - enabling direct interfacing with 3.3 V or 5 V microcontrollers without level-shifting circuitry. For single-supply use, connect VCC– to ground and reference inputs appropriately to mid-supply or signal ground.
What is the input bias current specification for TL972IPG4?
The TL972IPG4 has a typical input bias current of ±0.01 nA at 25°C, with a maximum of 1000 nA over the full –40°C to +125°C temperature range. This ultra-low bias current minimizes voltage errors in high-impedance sensor interfaces such as photodiode transimpedance amplifiers or thermocouple cold-junction compensation circuits.
Can TL972IPG4 drive capacitive loads without instability?
Yes, the TL972IPG4 is unity-gain stable and characterized to drive capacitive loads up to 250 pF without external compensation. Typical phase margin remains ≥60° at 25°C with 250 pF load, as confirmed in Figure 5-6 and Figure 5-7 of the datasheet. For loads exceeding 250 pF, a small series isolation resistor (e.g., 10–50 Ω) at the output is recommended to maintain stability.
Is TL972IPG4 pin-compatible with other TL97x variants?
No, TL972IPG4 is not pin-compatible with TL971 or TL974 due to differing channel counts and pin assignments. TL972IPG4 uses an 8-pin PDIP with dual-amplifier configuration (IN1±, OUT1, IN2±, OUT2, VCC±), whereas TL971 is single-channel (5-pin SOT-23) and TL974 is quad-channel (14-pin SOIC/TSSOP). Pin mapping is unique to each device variant and must be verified against the respective pin function tables.
TL972IPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 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:
- 8-PDIP
TL972IPG4 FAQ
1.How can I place an order for TL972IPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL972IPG4 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 TL972IPG4 reliable?
The price and inventory of TL972IPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL972IPG4 is usually 5 days.
3.What payment methods are accepted for TL972IPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL972IPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL972IPG4?
TL972IPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL972IPG4 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 TL972IPG4?
For technical support, including TL972IPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL972IPG4 requirements.
6.How does Aetrix verify that TL972IPG4 is sourced from the original manufacturer or authorized distributors?
All TL972IPG4 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 TL972IPG4 meets industry standards.
7.What is the process for return or replacement of TL972IPG4?
All TL972IPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL972IPG4, 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 TL972IPG4 part is unused and in its original packaging.
Return procedure for TL972IPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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