My Inquiry
My Account
STMicroelectronics TS974IDT
- Part No.:
- TS974IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS974IDT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,618
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS974IDT from STMicroelectronics is a quad 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, 12 MHz gain bandwidth, 4 V/µs slew rate, and operates from 2.7 V to 10 V supply. Used in professional audio circuits and portable instrumentation where signal fidelity and power efficiency are critical.
For engineers reviewing the TS974IDT datasheet, TS974IDT pinout, TS974IDT application, or TS974IDT equivalent, this page provides verified package mapping (SO14), confirmed rail-to-rail output swing (±2.4 V @ ±2.5 V), validated noise performance (4 nV/√Hz), real-world THD specification (0.003%), and documented thermal resistance (105 °C/W junction-to-ambient).
Technical Context
The TS974IDT integrates four independent high-dynamic-range op-amps on a single SO14 die, each featuring fully rail-to-rail output swing with ±2.4 V swing at ±2.5 V supplies. Its internal architecture supports stable unity-gain operation with ≥60° phase margin and 10 dB gain margin under 2 kΩ load and 100 pF capacitive loading.
Designed for dual-supply operation (±1.35 V minimum), it maintains 85 dB common-mode rejection and 70 dB supply voltage rejection across its 2.7–10 V operating range. Input bias current remains below 1 µA over -40°C to +125°C, enabling precision sensor interfacing without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain bandwidth product | 12 MHz - supports stable closed-loop gain up to 10× at 1 MHz for anti-aliasing filter design |
| Slew rate | 4 V/µs - enables clean 1 Vpp 100 kHz sine wave reproduction without distortion |
| Input voltage noise | 4 nV/√Hz at 100 kHz - preserves SNR in microphone preamp stages with >110 dB dynamic range |
| THD+N | 0.003 % at 1 kHz - meets professional audio line-level signal chain requirements |
| Supply voltage range | 2.7 V to 10 V - compatible with single Li-ion (3.0–4.2 V) and dual AA/AAA (3.0 V) battery rails |
| Output swing | ±2.4 V @ ±2.5 V - delivers full-scale analog output into 2 kΩ loads without clipping |
| Input offset drift | 5 µV/°C - ensures <100 µV total offset shift across industrial temperature range (-40°C to +125°C) |
Pinout & Package
TS974IDT is housed in a 14-pin SOIC (SO14) package with 1.27 mm pitch, 8.55–8.75 mm body length, and 3.80–4.00 mm width. Thermal resistance is 105 °C/W (junction-to-ambient) and 31 °C/W (junction-to-case), supporting continuous operation at 125°C ambient with minimal heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, drives 2 kΩ min load |
| 2 | IN− A | Inverting input of Amp A - high-impedance node, sensitive to PCB leakage |
| 3 | IN+ A | Non-inverting input of Amp A - referenced to common-mode range (VDD + 1.15 V to VCC − 1.15 V) |
| 4 | VDD | Negative supply pin - must be decoupled with 100 nF ceramic capacitor near pin |
| 5 | IN+ B | Non-inverting input of Amp B - electrically isolated from other inputs; no internal connection |
| 6 | IN− B | Inverting input of Amp B - accepts differential signals up to ±1.35 V common-mode |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to OUT A |
| 8 | OUT C | Amplifier C output - independently buffered; no crosstalk with A/B sections |
| 9 | IN− C | Inverting input of Amp C - shares same input stage topology as A/B |
| 10 | IN+ C | Non-inverting input of Amp C - supports DC-coupled sensor interfaces |
| 11 | VCC | Positive supply pin - requires local 100 nF ceramic + 1 µF tantalum decoupling |
| 12 | IN+ D | Non-inverting input of Amp D - usable for reference buffering or active filtering |
| 13 | IN− D | Inverting input of Amp D - supports unity-gain inverter configuration |
| 14 | OUT D | Amplifier D output - fully characterized for 0.003% THD at 1 kHz, RL = 10 kΩ |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full ±2.4 V output into 2 kΩ at ±2.5 V supply - eliminates need for level-shifting in single-supply audio paths |
| Ultra-low THD+N | 0.003 % at 1 kHz enables use in Class AB headphone drivers without post-filtering |
| Low input voltage noise | 4 nV/√Hz allows direct coupling to piezoelectric sensors and electret microphone elements |
| High PSRR and CMRR | 70 dB supply rejection and 85 dB common-mode rejection maintain signal integrity in noisy mixed-signal PCBs |
| Wide supply range | 2.7–10 V operation supports both 3.3 V microcontroller domains and legacy 5 V analog subsystems |
Applications
| Professional Audio Mixer Channel | Portable ECG Signal Conditioning |
|---|---|
Use Scenario: Four-channel analog summing and tone control in compact desktop audio mixers. IC Role / Device Role / Timing Role: Each amplifier handles one channel: buffer, gain stage, active filter, and output driver. Use Value: 0.003% THD preserves harmonic integrity across 20 Hz–20 kHz; rail-to-rail swing maximizes headroom from 3.3 V supply. | Use Scenario: Front-end amplification and filtering of biopotential signals from dry electrodes. IC Role / Device Role / Timing Role: Instrumentation-grade first-stage gain (100×), right-leg drive buffer, and anti-aliasing filter driver. Use Value: 4 nV/√Hz noise floor enables detection of <10 µV cardiac signals; 85 dB CMRR rejects 50/60 Hz interference. |
| Industrial Sensor Signal Chain | Automated Test Equipment (ATE) Reference Buffer |
Use Scenario: Multi-sensor data acquisition module measuring strain gauges, RTDs, and thermocouples. IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage, excitation current source buffer, and ADC driver. Use Value: 5 µV/°C offset drift ensures <1 LSB error over full industrial temperature range with 16-bit SAR ADCs. | Use Scenario: Stable voltage reference distribution and buffering for multi-channel DAC outputs in calibration equipment. IC Role / Device Role / Timing Role: Low-noise unity-gain buffer isolating precision voltage references from switching DAC loads. Use Value: 12 MHz GBW and 4 V/µs slew rate prevent settling delay errors during fast DAC transitions (<1 µs). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464CDR | Higher input offset (2 mV typ vs. 1 mV typ), lower GBW (6.4 MHz), higher supply current (650 µA per amp) | Less suitable for low-distortion audio; better for ultra-low-power sensor nodes with relaxed speed needs | Select when supply current <700 µA is mandatory and THD >0.01% is acceptable |
| OPA4188AIPWR | Zero-drift architecture, 0.03 µV/°C drift, but higher noise (8.8 nV/√Hz), lower slew rate (0.8 V/µs) | Ideal for DC-precision applications (e.g., weigh scales); unsuitable for audio or fast transient response | Select when µV-level DC accuracy dominates over AC fidelity and speed |
Compared with TLV2464CDR and OPA4188AIPWR, TS974IDT uniquely balances low noise (4 nV/√Hz), low distortion (0.003%), high speed (12 MHz/4 V/µs), and rail-to-rail output - making it optimal for audio and wideband sensor signal chains where all four parameters matter simultaneously.
Availability
TS974IDT is available at Aetrix Electronics and suitable for professional audio equipment, portable medical devices, industrial data acquisition systems, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for TS974IDT 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 MEMS products for automotive, industrial, and consumer markets.
The TS97x family was engineered specifically for low-voltage, low-noise analog signal conditioning in portable and battery-operated equipment - emphasizing rail-to-rail output, audio-grade THD, and robust ESD immunity (2 kV HBM).
FAQ
What is the maximum capacitive load the TS974IDT can drive while maintaining stability?
The TS974IDT is characterized for stable operation with up to 100 pF capacitive load when driving a 2 kΩ resistive load, as confirmed by phase margin ≥60° and gain margin ≥10 dB in the datasheet's Figure 10 and Figure 11. For loads exceeding 100 pF, an isolation resistor (≥100 Ω) between output and capacitance is required to prevent peaking or oscillation.
Does the TS974IDT support single-supply operation?
Yes - the TS974IDT operates from a single 2.7 V to 10 V supply. Its input common-mode range extends to within 1.15 V of each rail (VDD + 1.15 V to VCC − 1.15 V), and output swings rail-to-rail. For single-supply use, bias the non-inverting inputs at mid-supply using a resistor divider or dedicated reference to enable full-swing AC coupling.
What is the thermal performance of the SO14 package under continuous operation?
The SO14 package has a junction-to-ambient thermal resistance (RthJA) of 105 °C/W. At 2.8 mA supply current per amplifier (11.2 mA total), power dissipation is ~35 mW. This yields a worst-case junction temperature rise of 3.7°C above ambient - well within the 150°C absolute maximum, enabling reliable operation at 125°C ambient without forced airflow.
How does the TS974IDT's noise performance compare to standard CMOS op-amps in audio applications?
At 4 nV/√Hz, TS974IDT's voltage noise is 3× lower than typical CMOS quad op-amps (e.g., MCP6004: 28 nV/√Hz). This directly translates to >15 dB improvement in input-referred noise floor - critical for microphone preamplifiers where signal levels are sub-millivolt and noise dominates SNR. Its bipolar input stage enables this performance without sacrificing input bias current (≤1 µA).
TS974IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-SO
TS974IDT FAQ
1.How can I place an order for TS974IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS974IDT 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 TS974IDT reliable?
The price and inventory of TS974IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS974IDT is usually 5 days.
3.What payment methods are accepted for TS974IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS974IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS974IDT?
TS974IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS974IDT 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 TS974IDT?
For technical support, including TS974IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS974IDT requirements.
6.How does Aetrix verify that TS974IDT is sourced from the original manufacturer or authorized distributors?
All TS974IDT 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 TS974IDT meets industry standards.
7.What is the process for return or replacement of TS974IDT?
All TS974IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS974IDT, 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 TS974IDT part is unused and in its original packaging.
Return procedure for TS974IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS974IDT 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
