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STMicroelectronics TS461CDT
- Part No.:
- TS461CDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS461CDT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,608
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Product details
Overview
TS461CDT from STMicroelectronics is a rail-to-rail output operational amplifier in SO-8 package, designed for low-voltage audio signal conditioning with ±2.4 V output swing at ±2.5 V supply, 4 nV/√Hz input noise, and 0.003 % THD at 1 kHz - deployed in microphone pre-amplifiers and portable multimedia equipment.
For engineers reviewing the TS461CDT datasheet, TS461CDT pinout, TS461CDT application, or TS461CDT equivalent, key selection criteria include rail-to-rail output drive capability under 2.7–10 V single-supply operation, low-noise performance in battery-powered audio front-ends, and SO-8 thermal resistance (125 °C/W) for sustained linearity in compact enclosures.
Technical Context
The TS461CDT operates as a single-channel, voltage-feedback op-amp with rail-to-rail output stage enabling full dynamic range utilization near supply rails. Its input common-mode range extends from VDD +1.15 V to VCC −1.15 V, supporting biasing flexibility in AC-coupled audio paths.
It delivers 12 MHz gain-bandwidth product and 4 V/µs slew rate under unity-gain configuration, ensuring faithful reproduction of wideband audio signals up to ~100 kHz without phase distortion or clipping-induced intermodulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V - supports single-supply portable systems including USB-powered audio interfaces and battery-operated PDAs. |
| Output Swing | ±2.4 V at ±2.5 V supply - enables >96 % rail utilization for maximum SNR in low-voltage audio chains. |
| Input Noise | 4 nV/√Hz at 100 kHz - preserves signal integrity in microphone pre-amplifier stages where source impedance is ≤10 kΩ. |
| THD+N | 0.003 % at 1 kHz, AV = −1, RL = 10 kΩ - meets CD-quality audio distortion requirements per IEC 60268-3. |
| Gain Bandwidth | 12 MHz typ. - allows stable unity-gain buffer configurations with ≥60° phase margin into 100 pF capacitive loads. |
| Slew Rate | 4 V/µs typ. - prevents slew-induced distortion on 1 Vpp, 100 kHz sine waves in line-driver applications. |
| Input Offset Drift | 5 µV/°C - ensures <100 µV total offset shift across −20 °C to +70 °C industrial temperature range. |
Pinout & Package
TS461CDT is housed in an SO-8 (Small Outline-8) plastic package with standard 1.27 mm pitch, 5.0 mm × 6.2 mm body, and 125 °C/W junction-to-ambient thermal resistance - suitable for reflow-soldered PCB layouts with moderate power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input | Differential node for feedback network connection; referenced to non-inverting input for closed-loop gain setting. |
| 2 | Non-inverting Input | High-impedance input node accepting AC-coupled sensor or line-level signals with CMVR up to VCC −1.15 V. |
| 3 | Output | Rail-to-rail output stage capable of sourcing/sinking ≥20 mA into resistive loads while maintaining linearity. |
| 4 | VDD (Negative Supply) | Ground or negative rail connection in single-supply mode; must be decoupled with 100 nF ceramic capacitor near pin. |
| 5 | VCC (Positive Supply) | Main power input; accepts 2.7–10 V DC with recommended 100 nF + 10 µF parallel decoupling. |
| 6–8 | No Connect | Internally unconnected pins; left floating or tied to ground per layout best practices to minimize parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers ±2.4 V swing at ±2.5 V supply, maximizing dynamic range without external level-shifting circuitry. |
| Low input noise | 4 nV/√Hz at 100 kHz enables clean amplification of low-level electret microphone outputs (<10 mV RMS). |
| Low harmonic distortion | 0.003 % THD ensures fidelity in recording equipment signal paths compliant with AES17 standards. |
| Wide supply range | Operates from 2.7 V to 10 V single supply, eliminating need for dual-rail generation in portable designs. |
| Stable capacitive load drive | Maintains phase margin ≥60° into 100 pF loads, supporting direct connection to ADC input filters or coaxial cable drivers. |
Applications
| Microphone Pre-amplifier | Portable CD Player Audio Stage |
|---|---|
Use Scenario: Amplifying low-output electret condenser microphone signals (5–10 mV RMS) before ADC sampling in voice-recording devices. IC Role / Device Role / Timing Role: Single-ended, non-inverting gain-of-100 amplifier with DC-blocking input capacitor and output low-pass filter. Use Value: 4 nV/√Hz input noise and 0.003 % THD preserve speech intelligibility and reduce post-processing SNR loss. | Use Scenario: Buffering DAC output in battery-powered CD players to drive headphone amplifiers or line outputs. IC Role / Device Role / Timing Role: Unity-gain rail-to-rail voltage follower isolating DAC from variable load impedance. Use Value: ±2.4 V output swing at 3.3 V supply ensures full-scale analog headroom without clipping during peak audio transients. |
| Sound Card Line Input | Multimedia PDA Audio Codec Interface |
Use Scenario: Accepting consumer line-level inputs (−10 dBV, ~0.316 V RMS) into PC sound cards with software-configurable gain. IC Role / Device Role / Timing Role: Programmable-gain amplifier stage with digital potentiometer feedback network. Use Value: 12 MHz GBW and 4 V/µs slew rate prevent transient response degradation across 20 Hz–20 kHz bandwidth. | Use Scenario: Interfacing stereo audio codec outputs to internal speaker drivers or external jack in handheld PDAs. IC Role / Device Role / Timing Role: Dual-rail single-supply buffer with VDD = GND and VCC = 3.3 V, driving 32 Ω loads via series resistor. Use Value: SO-8 thermal resistance (125 °C/W) limits junction rise to <15 °C at 2.8 mA quiescent current, avoiding thermal drift in compact form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2271CDR | Higher input offset voltage (1.5 mV max vs. 7 mV), lower GBW (2.2 MHz), higher supply current (1.3 mA vs. 2.8 mA) | Optimized for precision DC-coupled sensors rather than wideband audio; lacks rail-to-rail output swing specification | Select when DC accuracy outweighs audio fidelity; avoid for THD-sensitive microphone preamps |
| OPA344UA | Lower noise (11 nV/√Hz), higher THD (0.01 %), same SO-8 package and supply range | Targeted at general-purpose instrumentation; not characterized for audio-specific distortion metrics | Acceptable for line-level buffering where SNR > 90 dB suffices; not recommended for mic preamp gain stages |
Compared with TLC2271CDR and OPA344UA, TS461CDT uniquely balances ultra-low THD, rail-to-rail output, and audio-optimized noise floor - making it the only choice among the three for high-fidelity portable microphone signal chains requiring <0.005 % distortion and >100 dB SNR.
Availability
TS461CDT is available at Aetrix Electronics and suitable for microphone pre-amplifiers, portable CD players, and sound card line-input circuits requiring stable component supply across extended production lifecycles.
Supply support for TS461CDT 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, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The TS46x family belongs to ST's precision audio op-amp product line, engineered specifically for low-voltage, low-noise, rail-to-rail signal conditioning in battery-powered multimedia devices.
FAQ
What is the maximum capacitive load the TS461CDT can drive without instability?
The TS461CDT maintains ≥60° phase margin into 100 pF capacitive loads when configured as a unity-gain buffer with proper supply decoupling (100 nF ceramic + 10 µF bulk). Driving >200 pF requires external isolation resistor (≥10 Ω) in series with the output to preserve stability per Figure 12 in DS1416 Rev 4.
Does TS461CDT support true single-supply operation with input common-mode range extending to VDD?
No - its input common-mode voltage range is specified as VDD +1.15 V to VCC −1.15 V. With VDD = 0 V (ground), the minimum valid input is +1.15 V, so it cannot accept signals down to ground without level-shifting. For true rail-to-rail input, consider TS462CDT (dual) or TS464CDT (quad).
Can TS461CDT be used in inverting amplifier configurations with gain < 1?
Yes - the TS461CDT supports stable inverting configurations down to gain = 0.1 (−20 dB) when using feedback resistors ≥10 kΩ and maintaining CL ≤ 10 pF. Layout must minimize stray capacitance at the inverting input node to avoid peaking above 1 MHz per electrical characteristics Table 3.
Is the TS461CDT pin-compatible with other op-amps in SO-8 package like LM358 or TL072?
No - TS461CDT uses a non-standard SO-8 pinout: Pin 1 = inverting input, Pin 2 = non-inverting input, Pin 3 = output, Pin 4 = VDD, Pin 5 = VCC, Pins 6–8 = NC. LM358 and TL072 use Pin 4 = VDD and Pin 8 = VCC, with active pins occupying all eight positions - direct replacement requires PCB redesign.
TS461CDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -20°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TS461CDT FAQ
1.How can I place an order for TS461CDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS461CDT 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 TS461CDT reliable?
The price and inventory of TS461CDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS461CDT is usually 5 days.
3.What payment methods are accepted for TS461CDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS461CDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS461CDT?
TS461CDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS461CDT 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 TS461CDT?
For technical support, including TS461CDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS461CDT requirements.
6.How does Aetrix verify that TS461CDT is sourced from the original manufacturer or authorized distributors?
All TS461CDT 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 TS461CDT meets industry standards.
7.What is the process for return or replacement of TS461CDT?
All TS461CDT units undergo pre-shipment inspection (PSI). If there is an issue with TS461CDT, 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 TS461CDT part is unused and in its original packaging.
Return procedure for TS461CDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS461CDT Tags
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