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Texas Instruments TL972IP
- Part No.:
- TL972IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL972IP.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:262
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Product details
Overview
TL972IP 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 professional audio circuits and high-fidelity portable equipment.
For engineers reviewing the TL972IP datasheet, TL972IP pinout, TL972IP application, or TL972IP equivalent, key selection considerations include its rail-to-rail output drive capability under low-voltage operation, verified 4.4 nV/√Hz noise performance at 100 kHz, guaranteed –40°C to +125°C operating range, and dual-amplifier integration in PDIP-8 package for prototyping and legacy board compatibility.
Technical Context
The TL972IP implements a complementary-input-stage architecture enabling rail-to-rail common-mode input range and robust PSRR/CMRR across temperature. Its output stage supports true rail-to-rail swing with ±65 mA sink/source capability and maintains stability with capacitive loads up to 250 pF without isolation resistors.
It operates over full industrial temperature (–40°C to +125°C) with 2.48 mA per amplifier quiescent current and achieves 125 dB large-signal voltage gain at 25°C. Input offset voltage is ±0.21 mV (typ), with ±0.25 µV/°C drift - enabling precision DC-coupled signal conditioning in sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Density | 4.4 nV/√Hz at 100 kHz - enables high-SNR audio preamp stages without audible hiss |
| Output Swing | ±2.4 V at ±2.5 V supply - delivers >96% of full rail-to-rail dynamic range for maximum signal headroom |
| Supply Range | 2.7 V to 12 V - supports single-supply 3.3 V/5 V systems and dual-supply ±2.5 V/±5 V configurations |
| GBW Product | 10.6 MHz - sustains stable unity-gain buffer operation up to ~10 MHz with 100 pF load |
| Input Offset | ±0.21 mV (typ) - reduces DC error in precision instrumentation amplifiers and sensor interfaces |
| Quiescent Current | 2.48 mA per amplifier - balances low power consumption with high-speed performance in portable designs |
| Operating Temp | –40°C to +125°C - qualified for automotive cabin and industrial control environments |
Pinout & Package
TL972IP is housed in an 8-pin PDIP (Plastic Dual In-line Package) with 9.81 mm × 9.43 mm footprint, suitable for through-hole prototyping, breadboarding, and legacy PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives external load directly; rail-to-rail capable up to ±65 mA |
| 2 | IN1– | Inverting input of Amp1 - accepts feedback network for closed-loop gain configuration |
| 3 | IN1+ | Non-inverting input of Amp1 - high-impedance node for sensor or signal source connection |
| 4 | VCC– | Negative supply rail - connects to ground (single supply) or negative voltage (dual supply) |
| 5 | VCC+ | Positive supply rail - powers both amplifiers; bypass capacitor required near this pin |
| 6 | IN2+ | Non-inverting input of Amp2 - independent high-Z input for second signal path |
| 7 | IN2– | Inverting input of Amp2 - supports separate feedback loop for dual-channel operation |
| 8 | OUT2 | Amplifier 2 output - fully independent rail-to-rail output stage, electrically isolated from OUT1 |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers ±2.4 V swing at ±2.5 V supply - maximizes usable dynamic range in low-voltage audio paths |
| Low input voltage noise | 4.4 nV/√Hz at 100 kHz - preserves SNR in microphone preamps and piezoelectric sensor interfaces |
| Wide supply range | Operates from 2.7 V to 12 V - eliminates need for dedicated LDOs in mixed-voltage systems |
| High output drive | ±65 mA sink/source per amplifier - drives 2 kΩ loads directly without external buffers |
| Industrial temp grade | Specified from –40°C to +125°C - ensures reliability in automotive infotainment and industrial PLC modules |
Applications
| Professional Audio Preamplifier | Portable Music Player Line-Out |
|---|---|
Use Scenario: Low-noise gain stage for condenser microphone signals prior to ADC sampling in studio-grade audio interfaces. IC Role / Device Role / Timing Role: Dual op-amp configured as differential preamp (Amp1) and active filter (Amp2) - no timing function. Use Value: 4.4 nV/√Hz noise floor ensures >110 dB SNR at 1 Vpp output; rail-to-rail swing prevents clipping on transients. |
Use Scenario: Headphone driver and line-level output buffer in battery-powered music players with 3.3 V supply. IC Role / Device Role / Timing Role: Dual op-amp used as stereo line-out buffer (Amp1 = left, Amp2 = right) - no timing function. Use Value: ±2.4 V swing at 3.3 V single supply delivers 2.4 Vpp line-level signal; 2.48 mA/quiescent enables >20 hr battery life. |
| Industrial Sensor Signal Conditioning | Automotive Cabin Temperature Monitor |
Use Scenario: Amplifying low-level mV outputs from RTD or thermocouple sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Dual op-amp configured as precision instrumentation amp front-end (Amp1) and reference buffer (Amp2). Use Value: ±0.21 mV input offset and ±0.25 µV/°C drift minimize temperature-induced measurement error over –40°C to +85°C. |
Use Scenario: Signal conditioning for NTC thermistors in HVAC control modules inside vehicle cabins. IC Role / Device Role / Timing Role: Dual op-amp used as sensor amplifier (Amp1) and comparator hysteresis generator (Amp2). Use Value: –40°C to +125°C qualification ensures stable operation under dashboard thermal cycling; 125 dB gain supports high-resolution digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL972IDR | Same die, SOIC-8 package (4.90 mm × 6.00 mm); 2500-piece tape-and-reel; RoHS-compliant NiPdAu finish | Surface-mount production use; requires reflow soldering; smaller footprint than PDIP | Select TL972IDR for automated assembly and space-constrained PCBs; TL972IP remains optimal for hand-soldered prototypes and test fixtures. |
| OPA2376AIDR | Lower noise (4.2 nV/√Hz), lower IQ (760 µA/amplifier), but narrower supply range (2.2 V to 5.5 V); SOIC-8 only | Battery-powered wearables and ultra-low-power IoT sensors where 3.3 V operation suffices | Choose OPA2376AIDR only when sub-1 mA quiescent current is mandatory and supply is fixed at ≤5.5 V; TL972IP provides broader voltage flexibility and higher output drive. |
Compared with TL972IDR, TL972IP offers identical electrical performance but enables through-hole evaluation and legacy system upgrades; versus OPA2376AIDR, TL972IP trades minor noise penalty for 3× higher output current and 2.15× wider supply range - critical for 12 V industrial and dual-supply audio designs.
Availability
TL972IP is available at Aetrix Electronics and suitable for professional audio circuits, portable music player line-output stages, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long-lifecycle programs.
Supply support for TL972IP 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 TL97x family was designed specifically for low-noise, rail-to-rail output signal conditioning in portable and battery-powered equipment - emphasizing audio fidelity, wide supply tolerance, and robust operation across industrial temperatures.
FAQ
What is the maximum supply voltage rating for TL972IP?
The absolute maximum supply voltage for TL972IP is 15 V across VCC+ and VCC– terminals. Operation beyond this limit risks permanent damage. The recommended operating range is 2.7 V to 12 V, with full electrical specifications guaranteed across that span. At 12 V, TL972IP maintains rail-to-rail output swing and 10.6 MHz GBW - making it suitable for high-headroom audio and industrial analog signal chains.
Does TL972IP support single-supply operation?
Yes, TL972IP supports true single-supply operation from 2.7 V to 12 V. When used with a single supply, VCC– is connected to ground and VCC+ to the positive rail. Its rail-to-rail output stage delivers output voltages within 200 mV of each rail, and the input common-mode range extends to within 1.15 V of either supply - enabling direct interfacing with microcontroller ADCs and sensors referenced to the same supply.
What is the input voltage noise specification of TL972IP and at what frequency is it measured?
TL972IP has a typical input voltage noise density of 4.4 nV/√Hz, measured at 100 kHz under VCC+ = 2.5 V, VCC– = –2.5 V, and TA = 25°C. This value is confirmed in Section 5.6 Electrical Characteristics of the official datasheet. The low noise performance makes TL972IP appropriate for microphone preamplifiers, piezoelectric sensor amplifiers, and other high-fidelity analog front-ends where signal integrity is critical.
Is TL972IP pin-compatible with other dual op-amps in PDIP-8 package?
TL972IP uses the industry-standard dual op-amp pinout for PDIP-8: Pin 1 = OUT1, Pin 2 = IN1–, Pin 3 = IN1+, Pin 4 = VCC–, Pin 5 = VCC+, Pin 6 = IN2+, Pin 7 = IN2–, Pin 8 = OUT2. It matches the pin configuration of LM358, TL072, and OPA234 - allowing drop-in replacement in many legacy designs, provided noise, bandwidth, and rail-to-rail output requirements are met. Always verify layout compatibility and decoupling practices before substitution.
What thermal performance can be expected from TL972IP in PDIP-8 package?
TL972IP in PDIP-8 package has a junction-to-air thermal resistance (RθJA) of 85°C/W, as specified in Section 5.5 Thermal Information. At maximum quiescent current (3.2 mA per amplifier × 2 = 6.4 mA) and 12 V supply, total power dissipation is ~77 mW - resulting in ~6.5°C junction-to-ambient rise above ambient. This allows reliable operation without heatsinking in standard PCB layouts, even at +125°C ambient, provided adequate copper area and airflow are maintained.
TL972IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
TL972IP FAQ
1.How can I place an order for TL972IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL972IP 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 TL972IP reliable?
The price and inventory of TL972IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL972IP is usually 5 days.
3.What payment methods are accepted for TL972IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL972IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL972IP?
TL972IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL972IP 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 TL972IP?
For technical support, including TL972IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL972IP requirements.
6.How does Aetrix verify that TL972IP is sourced from the original manufacturer or authorized distributors?
All TL972IP 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 TL972IP meets industry standards.
7.What is the process for return or replacement of TL972IP?
All TL972IP units undergo pre-shipment inspection (PSI). If there is an issue with TL972IP, 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 TL972IP part is unused and in its original packaging.
Return procedure for TL972IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL972IP Tags
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