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STMicroelectronics TS972IST
- Part No.:
- TS972IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TS972IST.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:2,994
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Product details
Overview
TS972IST from STMicroelectronics is a dual rail-to-rail output operational amplifier optimized for low-noise audio pre-amplification in battery-powered systems. It delivers 4 nV/√Hz input voltage noise, 0.003% THD at 1 kHz, and 12 MHz gain bandwidth with ±2.4 V output swing at ±2.5 V supply - enabling high-fidelity signal conditioning in portable CD players and professional audio front-ends.
For engineers reviewing the TS972IST datasheet, TS972IST pinout, TS972IST application, or TS972IST equivalent, this device is selected for precision analog signal paths requiring ultra-low distortion, wide supply range (2.7–10 V), rail-to-rail output drive, and robust ESD immunity (2 kV HBM) in space-constrained SO8 layouts.
Technical Context
The TS972IST integrates two independent op-amps sharing a common SO8 package, each featuring bipolar input stage architecture for low input bias current (200–1000 nA) and low offset drift (5 µV/°C). Its internal compensation ensures stable unity-gain operation with ≥60° phase margin across load conditions up to 2 kΩ and 100 pF capacitance.
Designed for single- or split-supply use, it supports common-mode input range from VDD + 1.15 V to VCC − 1.15 V and operates over −40 °C to +125 °C. The device exhibits rail-to-rail output swing (±2.4 V at ±2.5 V), 4 V/µs slew rate, and 8.5–12 MHz GBP - balancing speed, linearity, and power efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct operation from single Li-ion (3.0–4.2 V) or dual AA/AAA (±1.35–±2.5 V) supplies without regulation. |
| Input Voltage Noise | 4 nV/√Hz at 100 kHz - preserves SNR in microphone preamps and sensor signal chains where thermal noise dominates. |
| THD + N | 0.003 % at 1 kHz, RL = 10 kΩ - meets professional audio line-level fidelity requirements without post-filtering. |
| Gain Bandwidth Product | 12 MHz typical - supports closed-loop gains up to 12× at 1 MHz or unity-gain stability with capacitive loads ≤100 pF. |
| Slew Rate | 4 V/µs - ensures <1% distortion on 1 VPP signals up to 640 kHz full-power bandwidth. |
| Output Swing | ±2.4 V at ±2.5 V supply - delivers >96% of full rail-to-rail dynamic range for maximum ADC utilization in 5 V systems. |
| ESD Protection | 2 kV HBM - provides production-ready robustness against handling discharge in assembly and field service environments. |
Pinout & Package
TS972IST is housed in an 8-pin SO (Small Outline) plastic package (SO8), measuring 4.9 × 6.0 mm with 1.27 mm lead pitch. The package complies with ECOPACK® environmental standards and supports standard reflow soldering profiles.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | Differential input node for first op-amp; referenced to internal bias network for stable DC operating point. |
| 2 | Non-inverting Input (Amplifier A) | High-impedance input accepting sensor or source signals; common-mode range extends to within 1.15 V of rails. |
| 3 | Output (Amplifier A) | Rail-to-rail CMOS output stage capable of sourcing 1.5 mA and sinking 100 mA into 2 kΩ loads. |
| 4 | VDD (Negative Supply) | Ground or negative rail connection; must be decoupled locally with ≥100 nF ceramic capacitor. |
| 5 | Non-inverting Input (Amplifier B) | Second independent input channel; electrically isolated from Amplifier A except via shared supply pins. |
| 6 | Inverting Input (Amplifier B) | Configurable for inverting gain stages or differential-to-single-ended conversion with Amplifier A. |
| 7 | Output (Amplifier B) | Independent output with identical AC/DC specs as Pin 3; supports dual-channel buffering or stereo preamp functions. |
| 8 | VCC (Positive Supply) | Main positive rail; supplies both amplifiers; thermal resistance junction-to-ambient is 125 °C/W in SO8 configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers ±2.4 V output at ±2.5 V supply - maximizes dynamic range in low-voltage audio and sensor interfaces. |
| Ultra-low THD | 0.003 % at 1 kHz - eliminates need for external harmonic filtering in line-out and headphone driver stages. |
| Low-noise bipolar input | 4 nV/√Hz input voltage noise + 250 fA/√Hz current noise - optimal for high-Z sources like piezoelectric sensors and electret mics. |
| Wide temperature range | −40 °C to +125 °C operation - qualified for industrial and automotive cabin electronics without derating. |
| Latch-up immunity | Class A certified per JEDEC JESD78 - prevents destructive failure during input overvoltage or supply sequencing faults. |
Applications
| Portable Audio Pre-amplification | Professional Line-Level Interface |
|---|---|
|
Use Scenario: Amplifying low-level signals from electret microphones or line-in jacks in handheld media players. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier providing gain, DC blocking, and impedance transformation before ADC sampling. Use Value: 4 nV/√Hz noise floor and 0.003% THD preserve audio clarity across 20 Hz–20 kHz without post-processing. |
Use Scenario: Driving balanced/unbalanced line outputs in studio mixers and digital audio workstations. IC Role / Device Role / Timing Role: Output buffer and level shifter ensuring low-output-impedance drive into 600 Ω or 10 kΩ loads. Use Value: ±2.4 V swing at ±2.5 V supply enables 4.8 VPP line-level output compatible with AES3 and consumer RCA standards. |
| Industrial Sensor Signal Conditioning | Battery-Powered Instrumentation |
|
Use Scenario: Amplifying millivolt-level outputs from thermocouples, strain gauges, or pH electrodes in field-deployed meters. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail output for full-scale ADC utilization. Use Value: 5 µV/°C offset drift and 60–85 dB CMRR maintain accuracy across temperature gradients in unregulated environments. |
Use Scenario: Powering handheld multimeters, oscilloscope probes, or portable logic analyzers with single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-quiescent-current (2.8 mA total) dual op-amp supporting multiple analog functions in compact PCB layouts. Use Value: 2.7–10 V supply range allows direct connection to battery without LDO, reducing BOM count and standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2772IDR | Higher input bias current (1 pA vs. 200 nA), lower GBP (10 MHz), higher supply current (1.3 mA/op-amp). | Optimized for ultra-low-power (not ultra-low-noise) portable sensing; unsuitable for audio due to 12 nV/√Hz noise. | Select when battery life outweighs signal fidelity; avoid for microphone preamp or line-driver roles. |
| OPA2134PA | Lower noise (8 nV/√Hz), higher quiescent current (4 mA/op-amp), wider supply range (±4 V to ±18 V), no rail-to-rail output. | Targeted at high-end audio with discrete power supplies; requires ≥±4 V rails and external output clamping for rail-limited systems. | Choose for fixed-line audio gear with ample headroom; not viable for 3.3 V or battery-only designs. |
Compared with TLV2772IDR and OPA2134PA, TS972IST uniquely balances ultra-low noise (4 nV/√Hz), rail-to-rail output, and 2.7 V minimum supply - making it the only option among the three suitable for dual-channel audio pre-amplification in sub-5 V portable systems.
Availability
TS972IST is available at Aetrix Electronics and suitable for portable audio devices, industrial sensor transmitters, battery-powered test equipment, and professional line-level interface circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS972IST 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS97x family was developed specifically for high-fidelity, low-voltage analog signal conditioning - targeting portable audio, instrumentation, and communication equipment where noise, distortion, and supply flexibility are critical.
FAQ
What is the maximum capacitive load the TS972IST can drive while maintaining stability?
The TS972IST maintains ≥60° phase margin with 100 pF capacitive load at unity gain and 2 kΩ resistive load, as verified in Figure 10 and Table 3 of the datasheet. Driving >100 pF requires external isolation resistor (≥100 Ω) in series with the output to prevent peaking or oscillation.
Does the TS972IST support single-supply operation below 2.7 V?
No - the absolute minimum supply voltage is 2.7 V per Table 2. Operation below this threshold risks undefined behavior, reduced output swing, and increased input offset voltage drift. For sub-2.7 V applications, consider ST's TS982 or alternative micropower rail-to-rail op-amps explicitly rated down to 1.8 V.
Is the SO8 package of TS972IST RoHS-compliant and lead-free?
Yes - the TS972IST SO8 package carries ECOPACK® certification and conforms to RoHS Directive 2011/65/EU. Lead-free termination is standard, with matte tin plating and compatibility with Pb-free reflow profiles per J-STD-020.
Can the TS972IST be used in inverting amplifier configurations with gain >100?
Yes - its 12 MHz GBP supports stable inverting configurations up to G = 100 at 120 kHz (GBP/G). However, layout must minimize stray capacitance at the inverting node, and feedback resistor values should stay ≤1 MΩ to limit Johnson noise contribution without degrading bandwidth.
TS972IST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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:
- 4V/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:
- 100 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
TS972IST FAQ
1.How can I place an order for TS972IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TS972IST 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 TS972IST reliable?
The price and inventory of TS972IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS972IST is usually 5 days.
3.What payment methods are accepted for TS972IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS972IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS972IST?
TS972IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS972IST 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 TS972IST?
For technical support, including TS972IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS972IST requirements.
6.How does Aetrix verify that TS972IST is sourced from the original manufacturer or authorized distributors?
All TS972IST 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 TS972IST meets industry standards.
7.What is the process for return or replacement of TS972IST?
All TS972IST units undergo pre-shipment inspection (PSI). If there is an issue with TS972IST, 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 TS972IST part is unused and in its original packaging.
Return procedure for TS972IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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