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Texas Instruments TL972IPW
- Part No.:
- TL972IPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL972IPW.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:661
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Product details
Overview
TL972IPW from Texas Instruments is a dual rail-to-rail output operational amplifier optimized for low-noise audio and portable battery-powered applications. 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 serves as a precision preamplifier in high-fidelity headphone drivers and sensor signal conditioning circuits.
For engineers reviewing the TL972IPW datasheet, TL972IPW pinout, TL972IPW application, or TL972IPW equivalent, key selection considerations 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 TSSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The TL972IPW 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. Its input stage combines NMOS and PMOS differential pairs to extend common-mode range to both supply rails, with specified VICM = VCC– + 1.15 V to VCC+ – 1.15 V at 25°C.
It features 125 dB large-signal voltage gain (RL = 2 kΩ), 90 dB typical CMRR, and 70 dB SVR - all validated over full industrial temperature range. Output drive capability supports ±65 mA sink/source current, enabling direct interface with moderate-impedance loads without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - enables single-supply operation down to 2.7 V or dual-supply ±1.35 V, suitable for Li-ion and USB-powered systems. |
| Input Voltage Noise | 4.4 nV/√Hz at 100 kHz - ensures minimal contribution to total system noise in microphone preamps and instrumentation front-ends. |
| Output Swing | ±2.4 V at ±2.5 V supply - delivers >96% of rail-to-rail dynamic range, preserving signal headroom in low-voltage audio paths. |
| Gain-Bandwidth Product | 10.6 MHz - supports stable unity-gain and closed-loop gains up to G = 100 at audio frequencies with adequate phase margin. |
| Input Offset Voltage | ±0.21 mV (typ) - reduces DC error in precision transducer amplification and active filter stages without trimming. |
| Common-Mode Input Range | VCC– + 1.15 V to VCC+ – 1.15 V - allows direct sensing of signals near supply rails in single-supply configurations. |
| Quiescent Current | 2.8 mA per amplifier (typ) - balances low power consumption with high-speed performance for always-on portable subsystems. |
Pinout & Package
Packaged in a 3.00 mm × 6.40 mm TSSOP-8 (PW) body with 0.65 mm lead pitch, the TL972IPW supports fine-pitch automated assembly and offers thermal resistance RθJA = 149 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives load directly; rail-to-rail swing supports full-scale signal delivery into 2 kΩ or higher impedances. |
| 2 | IN1– | Inverting input - accepts feedback network connection; high impedance (>1012 Ω) minimizes loading on preceding stage. |
| 3 | IN1+ | Non-inverting input - used for unity-gain buffer or non-inverting gain configuration; common-mode range extends to rails. |
| 4 | VCC– | Negative supply or ground reference - must be decoupled with 0.1 µF ceramic capacitor placed adjacent to pin. |
| 5 | VCC+ | Positive supply - accepts 2.7–12 V; bypassing required to suppress PSRR degradation above 10 kHz. |
| 6 | IN2+ | Non-inverting input of amplifier 2 - electrically isolated from Amp1; enables dual-channel signal processing on single die. |
| 7 | IN2– | Inverting input of amplifier 2 - supports independent feedback networks per channel without crosstalk. |
| 8 | OUT2 | Amplifier 2 output - identical electrical specs to OUT1; enables stereo audio paths or differential driver configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers ±2.4 V output at ±2.5 V supply - preserves analog dynamic range in 3.3 V or lower systems without level-shifting. |
| Low input voltage noise | 4.4 nV/√Hz at 100 kHz - critical for high-SNR audio preamplification where source impedances exceed 1 kΩ. |
| Wide supply range | Operates from 2.7 V to 12 V - supports single-supply battery operation (e.g., 3.7 V Li-ion) and dual-supply ±5 V legacy designs. |
| High output drive | ±65 mA sink/source capability - eliminates need for external buffer stages when driving 10 kΩ headphones or 2 kΩ ADC inputs. |
| Industrial temperature range | Specified from –40°C to +125°C - ensures reliability in automotive cabin electronics and industrial sensor nodes. |
Applications
| Professional Audio Preamplifier | Portable Music Player Line-Out |
|---|---|
Use Scenario: Low-noise amplification of electret microphone or piezoelectric sensor output prior to ADC sampling. IC Role / Device Role / Timing Role: Precision DC-coupled preamplifier with gain ≥20 dB and bandwidth >20 kHz. Use Value: 4.4 nV/√Hz noise floor prevents degradation of SNR in 24-bit audio capture chains; rail-to-rail output maximizes utilization of ADC input range. |
Use Scenario: Buffered line-level output stage delivering stereo analog signals to 3.5 mm jack in smartphones and tablets. IC Role / Device Role / Timing Role: Dual-channel unity-gain buffer isolating DAC outputs from variable cable/load capacitance. Use Value: ±65 mA output drive maintains flat frequency response into 10 kΩ loads; 2.8 mA/quiescent current extends battery life during playback. |
| Instrumentation Sensor Interface | Medical Pulse Oximeter Analog Front-End |
Use Scenario: Amplifying low-level bridge sensor outputs (e.g., strain gauges, pressure sensors) in handheld test equipment. IC Role / Device Role / Timing Role: Instrumentation-grade differential amplifier with matched gain and offset tracking. Use Value: ±0.21 mV input offset and ±0.25 µV/°C drift minimize calibration burden; 90 dB CMRR rejects common-mode interference from switching power supplies. |
Use Scenario: Driving red/IR LED current sources and amplifying photodiode current via transimpedance configuration. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier (TIA) and LED driver buffer in compact wearable design. Use Value: Dual topology enables simultaneous LED control and photodiode signal conditioning in same footprint; TSSOP-8 package fits tight medical PCB constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise 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), no rail-to-rail output swing (limited to VCC– + 0.1 V / VCC+ – 0.1 V). | Better suited for ultra-low-noise DC-coupled sensor amps where output swing is not constrained; less ideal for audio line drivers requiring full rail utilization. | Select OPA2376AIDR when absolute minimum noise dominates over output voltage range and power budget permits higher IQ. |
| MCP6V82-E/MS | Zero-drift architecture (0.01 µV/°C offset drift), higher supply current (1.1 mA per amp), lower GBW (10 MHz), rail-to-rail input/output. | Preferred for high-precision DC measurements (e.g., weigh scales, thermopile amps); less optimal for wideband audio due to chopper-related artifacts. | Choose MCP6V82-E/MS when long-term DC stability and near-zero drift outweigh bandwidth and noise requirements. |
Compared with OPA2376AIDR and MCP6V82-E/MS, TL972IPW uniquely balances rail-to-rail output swing, 4.4 nV/√Hz noise, and 10.6 MHz bandwidth within a 2.8 mA per amplifier power envelope - making it the optimal choice for space- and power-constrained audio and mixed-signal interfaces where full dynamic range utilization is mandatory.
Availability
TL972IPW is available at Aetrix Electronics and suitable for professional audio equipment, portable consumer electronics, and industrial sensor signal conditioning requiring stable component supply and long-term manufacturability.
Supply support for TL972IPW 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 and embedded processing chips for industrial, automotive, and personal electronics markets.
The TL97x family was developed specifically for low-voltage, low-noise signal conditioning in battery-powered audio and instrumentation systems - emphasizing rail-to-rail output performance, noise efficiency, and robust operation across extended temperature ranges.
FAQ
What is the maximum supply voltage rating for TL972IPW?
The absolute maximum supply voltage for TL972IPW 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 for performance parameters such as noise, offset, or bandwidth. Operation at 15 V risks permanent damage and voids TI's warranty coverage for the TL972IPW.
Does TL972IPW support true rail-to-rail input operation?
No, TL972IPW features rail-to-rail *output* swing only. Its input common-mode voltage range is specified as VCC– + 1.15 V to VCC+ – 1.15 V at 25°C - meaning it cannot accept signals within ~1.15 V of either rail. This limitation is inherent to its complementary-input-stage architecture and is documented in Section 5.4 (Recommended Operating Conditions) of the TL972IPW datasheet.
Can TL972IPW drive a 600 Ω audio load directly?
TL972IPW is not rated for continuous 600 Ω loads. Its output current capability is ±65 mA, which supports ≤2 kΩ loads at full swing. Driving 600 Ω would require >±4 mA at 2.4 V output - feasible for short bursts but risks thermal overload and distortion under sustained conditions. For 600 Ω line-driving, a dedicated audio line driver IC or external buffer stage is recommended alongside TL972IPW.
What is the thermal resistance (RθJA) of TL972IPW in its TSSOP-8 package?
The junction-to-ambient thermal resistance (RθJA) for TL972IPW in the PW (TSSOP-8) package is 149 °C/W, measured per JESD 51-5 standards. This value assumes standard JEDEC High-K test board conditions. Actual board-level thermal performance depends on copper area, layer count, and airflow; adding thermal vias under the exposed pad (if present) or increasing copper pour can reduce effective RθJA by 20–40%.
Is TL972IPW compatible with lead-free reflow soldering processes?
Yes, TL972IPW is RoHS-compliant and qualified for lead-free reflow. Its MSL rating is Level-1 (unlimited floor life) with peak reflow temperature up to 260°C. The device uses NiPdAu lead finish, and TI specifies full compatibility with standard Pb-free reflow profiles including ramp-to-spike and soak-and-reflow cycles - provided moisture sensitivity precautions are followed per packaging documentation.
TL972IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TL972IPW FAQ
1.How can I place an order for TL972IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TL972IPW 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 TL972IPW reliable?
The price and inventory of TL972IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL972IPW is usually 5 days.
3.What payment methods are accepted for TL972IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL972IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL972IPW?
TL972IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL972IPW 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 TL972IPW?
For technical support, including TL972IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL972IPW requirements.
6.How does Aetrix verify that TL972IPW is sourced from the original manufacturer or authorized distributors?
All TL972IPW 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 TL972IPW meets industry standards.
7.What is the process for return or replacement of TL972IPW?
All TL972IPW units undergo pre-shipment inspection (PSI). If there is an issue with TL972IPW, 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 TL972IPW part is unused and in its original packaging.
Return procedure for TL972IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL972IPW Tags
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