My Inquiry
My Account
Texas Instruments TL972IDGKR
- Part No.:
- TL972IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TL972IDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,447
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL972IDGKR 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, 10.6 MHz gain bandwidth product, ±2.4 V output swing at ±2.5 V supply, 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 TL972IDGKR datasheet, TL972IDGKR pinout, TL972IDGKR application, or TL972IDGKR 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, thermal performance in VSSOP-8 (DGK), and compatibility with single-supply audio front-ends requiring >10 MHz bandwidth and <0.003% THD.
Technical Context
The TL972IDGKR 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 dual-amplifier topology supports independent channel operation with matched electrical characteristics including input offset voltage (±0.21 mV typ), CMRR (90 dB typ), and PSRR (70 dB typ).
It features low quiescent current per amplifier (2.8 mA typ), high output drive capability (±65 mA), and robust capacitive load tolerance up to 250 pF without external compensation - validated for use in unity-gain stable configurations with 100 pF load and 2 kΩ load resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - enables direct integration into 3.3 V, 5 V, and 9 V battery-powered systems without level-shifting. |
| Input Voltage Noise | 4.4 nV/√Hz at 100 kHz - ensures minimal audible hiss in line-level and microphone preamp stages. |
| Gain Bandwidth Product | 10.6 MHz - supports stable closed-loop gain ≥10 at audio frequencies up to 1 MHz with adequate phase margin. |
| Output Swing | ±2.4 V at ±2.5 V supply - delivers >96% of full rail-to-rail dynamic range for maximum signal headroom. |
| Common-Mode Rejection | 90 dB typical - suppresses supply ripple and ground bounce in mixed-signal PCB layouts. |
| Quiescent Current | 2.8 mA per amplifier - balances low power consumption with high-speed performance for portable designs. |
| Total Harmonic Distortion | 0.003% at 1 kHz - meets professional audio fidelity requirements for analog signal chains. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 4.90 mm body, 0.65 mm lead pitch, thermally enhanced exposed pad (not electrically connected), RoHS-compliant matte tin lead finish, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives low-impedance loads up to ±65 mA; requires local 0.1 µF bypass capacitor. |
| 2 | IN1– | Inverting input - high-impedance node; sensitive to layout-induced noise and parasitic capacitance. |
| 3 | IN1+ | Non-inverting input - accepts common-mode signals from VCC– + 1.15 V to VCC+ – 1.15 V. |
| 4 | VCC– | Negative supply rail - must be decoupled to ground with low-ESR ceramic capacitor. |
| 5 | VCC+ | Positive supply rail - shared by both amplifiers; separate bypassing recommended for dual-channel isolation. |
| 6 | IN2+ | Non-inverting input - electrically identical to Pin 3; supports independent second channel configuration. |
| 7 | IN2– | Inverting input - matches Pin 2 in offset, bias, and noise performance for channel matching. |
| 8 | OUT2 | Amplifier 2 output - fully independent output stage; no internal crosstalk with OUT1 at ≤100 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers usable output within 100 mV of either supply rail at 2.7 V to 12 V, preserving dynamic range in low-voltage audio paths. |
| Low input voltage noise | 4.4 nV/√Hz at 100 kHz enables clean amplification of microvolt-level sensor and microphone signals without added noise floor. |
| Unity-gain stable | Operates reliably with feedback gain = 1 and 100 pF capacitive load - eliminates need for external compensation in buffer applications. |
| Wide supply range | Functions from 2.7 V single supply to ±6 V dual supply, supporting legacy 5 V systems and modern 3.3 V portable platforms. |
| High output current drive | ±65 mA sourcing/sinking capability allows direct driving of 32 Ω headphones or 600 Ω line outputs without external buffers. |
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 in studio-grade recording interfaces. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier providing gain, DC blocking, and impedance transformation with matched channel performance. Use Value: 4.4 nV/√Hz noise floor and 0.003% THD preserve transient detail and harmonic integrity of acoustic sources. | Use Scenario: Driving stereo headphone outputs in battery-powered music players with 3.3 V or 5 V supply rails. IC Role / Device Role / Timing Role: Dual-output buffer amplifier delivering rail-to-rail swing and low output impedance to 16–32 Ω loads. Use Value: ±2.4 V swing at ±2.5 V supply and ±65 mA drive enable >1 Vrms output into 32 Ω without clipping or distortion. |
| Industrial Sensor Signal Conditioning | Medical Instrumentation Front-End |
Use Scenario: Amplifying low-level bridge transducer outputs (e.g., pressure, strain) in battery-operated handheld test equipment. IC Role / Device Role / Timing Role: Precision instrumentation amplifier stage with high CMRR and low drift for DC-coupled measurement paths. Use Value: ±0.21 mV input offset and ±0.25 μV/°C drift minimize calibration burden and maintain accuracy over temperature. | Use Scenario: Biopotential signal acquisition (ECG, EEG) where ultra-low noise and high common-mode rejection are critical. IC Role / Device Role / Timing Role: First-stage differential amplifier rejecting 50/60 Hz mains interference while amplifying µV-level bio-signals. Use Value: 90 dB CMRR and 70 dB PSRR suppress environmental noise coupling into sensitive analog front-ends. |
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 |
|---|---|---|---|
| OPA2376AIDGKR | Lower noise (4.2 nV/√Hz), higher quiescent current (1.6 mA per amp), same VSSOP-8 package. | Better suited for ultra-low-noise DC-coupled sensors; less optimal for battery life-constrained portable audio. | Select when sub-4.3 nV/√Hz noise is mandatory and power budget allows >1.5× TL972IDGKR ICC. |
| LMV722MMX/NOPB | Higher noise (11 nV/√Hz), lower GBW (10 MHz), smaller 5-pin SOT-23-5 package (single-channel only). | Limited to single-channel use; insufficient for stereo line-out or dual-sensor conditioning without duplication. | Choose only for space-constrained single-channel applications where noise >10 nV/√Hz is acceptable. |
Compared with OPA2376AIDGKR and LMV722MMX/NOPB, TL972IDGKR offers the best balance of rail-to-rail output swing, 4.4 nV/√Hz noise, and dual-channel integration in VSSOP-8 - making it optimal for portable stereo audio and dual-sensor signal chains where board area and power efficiency are jointly constrained.
Availability
TL972IDGKR is available at Aetrix Electronics and suitable for professional audio equipment, portable consumer electronics, industrial sensor modules, and medical instrumentation requiring stable component supply and long-term manufacturability.
Supply support for TL972IDGKR 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-voltage, low-noise analog signal processing in battery-powered audio and precision sensing applications - emphasizing rail-to-rail output, wide supply range, and robust noise performance.
FAQ
What is the maximum capacitive load the TL972IDGKR can drive without instability?
The TL972IDGKR maintains stable unity-gain operation with up to 250 pF capacitive load, as confirmed by phase margin measurements in the datasheet (Figure 5-7). For loads exceeding 100 pF, TI recommends verifying stability in the target application using actual PCB layout and load conditions. The TL972IDGKR does not require external compensation for standard audio output buffering.
Does the TL972IDGKR support true rail-to-rail input operation?
No - the TL972IDGKR features rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range is specified from VCC– + 1.15 V to VCC+ – 1.15 V. This means the input cannot accept signals within ~1.15 V of either supply rail. For true rail-to-rail input, consider TI's OPAx991 series or similar alternatives.
What is the thermal performance of TL972IDGKR in the DGK package?
In the VSSOP-8 (DGK) package, the TL972IDGKR has a junction-to-air thermal resistance (RθJA) of 172 °C/W, as measured per JESD 51-5. At 2.8 mA per amplifier (5.6 mA total) and 5 V supply, power dissipation is ~28 mW, resulting in a worst-case junction temperature rise of ~4.8 °C above ambient - well within safe operating limits for industrial and portable applications.
Can TL972IDGKR operate from a single 3.3 V supply?
Yes - the TL972IDGKR is fully specified for single-supply operation from 2.7 V to 12 V. With a 3.3 V supply, it delivers rail-to-rail output swing from ~50 mV above VCC– to ~50 mV below VCC+, enabling >3.2 Vpp output into high-impedance loads. Input common-mode range spans ~1.45 V to ~1.85 V, requiring proper DC biasing for AC-coupled inputs.
Is TL972IDGKR pin-compatible with other dual op-amps in VSSOP-8?
The TL972IDGKR uses the industry-standard VSSOP-8 pinout for dual op-amps (OUT1, IN1–, IN1+, V–, V+, IN2+, IN2–, OUT2), matching TI's OPA2376, LMV722, and many competitors. However, electrical behavior (noise, GBW, drive strength) differs significantly - direct substitution requires validation of loop stability, noise contribution, and output loading in the target circuit.
TL972IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
TL972IDGKR FAQ
1.How can I place an order for TL972IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL972IDGKR 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 TL972IDGKR reliable?
The price and inventory of TL972IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL972IDGKR is usually 5 days.
3.What payment methods are accepted for TL972IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL972IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL972IDGKR?
TL972IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL972IDGKR 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 TL972IDGKR?
For technical support, including TL972IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL972IDGKR requirements.
6.How does Aetrix verify that TL972IDGKR is sourced from the original manufacturer or authorized distributors?
All TL972IDGKR 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 TL972IDGKR meets industry standards.
7.What is the process for return or replacement of TL972IDGKR?
All TL972IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with TL972IDGKR, 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 TL972IDGKR part is unused and in its original packaging.
Return procedure for TL972IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL972IDGKR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
