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STMicroelectronics TS461CD
- Part No.:
- TS461CD
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS461CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,801
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Product details
Overview
TS461CD from STMicroelectronics is a single-channel rail-to-rail output operational amplifier optimized for low-voltage, low-noise audio signal conditioning in portable equipment. It operates from 2.7 V to 10 V (±1.35 V to ±5 V), delivers ±2.4 V output swing at ±2.5 V supply, features 4 nV/√Hz input voltage noise and 0.003 % THD at 1 kHz - enabling high-fidelity microphone pre-amplification in battery-powered sound cards and PDAs.
For engineers reviewing the TS461CD datasheet, TS461CD pinout, TS461CD application, or TS461CD equivalent, key selection criteria include its rail-to-rail output capability under low supply voltage, 8.5–12 MHz gain-bandwidth product, 2.8–4 V/µs slew rate, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TS461CD employs a CMOS input stage with bipolar output stage to achieve rail-to-rail output swing while maintaining low input bias current (200–1000 nA) and low offset drift (5 µV/°C). Its internal compensation ensures unity-gain stability with capacitive loads up to 100 pF.
Designed for single-supply or split-supply operation, it supports common-mode input range from VDD +1.15 V to VCC −1.15 V and exhibits 60–85 dB common-mode rejection and 60–70 dB supply rejection across its operating voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct use with Li-ion (3.7 V), dual AA (3 V), or 5 V USB power rails without LDO regulation. |
| Output Swing | ±2.4 V at ±2.5 V supply - delivers >96 % of full rail-to-rail dynamic range for maximum SNR in audio front-ends. |
| Input Voltage Noise | 4 nV/√Hz at 100 kHz - minimizes audible hiss in microphone pre-amplifier gain stages. |
| THD+N | 0.003 % at 1 kHz, AV = −1, RL = 10 kΩ - meets CD-quality distortion requirements for line-level and mic-level amplification. |
| Gain-Bandwidth Product | 8.5–12 MHz - supports stable 20× closed-loop gain up to 500 kHz for anti-aliasing filter buffering. |
| Slew Rate | 2.8–4 V/µs - preserves transient fidelity of speech and music signals without slew-induced distortion. |
| Input Offset Voltage | 1–7 mV - limits DC error in AC-coupled audio paths; typical 5 mV allows <10 mV output offset with 100× gain. |
Pinout & Package
TS461CD is housed in a 5-pin SOT23-5 micropackage (ECOPACK® compliant), measuring 2.90 mm × 2.80 mm × 1.30 mm (max), with gull-wing leads and 0.95 mm pitch. Thermal resistance θj-a is 250 °C/W, requiring minimal copper pour for thermal management in handheld designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−) | Differential input node; connects to feedback network in inverting configurations or sensor reference in instrumentation topologies. |
| 2 | Non-inverting Input (+) | Differential input node; accepts high-impedance signal sources such as electret microphone bias networks or piezo sensors. |
| 3 | Output | Rail-to-rail capable output stage; drives 2 kΩ loads directly into ADC inputs or headphone drivers with <1 % THD. |
| 4 | VDD (Negative Supply) | Connects to ground (single-supply) or negative rail (split-supply); must be decoupled with 100 nF ceramic capacitor near pin. |
| 5 | VCC (Positive Supply) | Primary power input; supports 2.7–10 V; requires local 100 nF ceramic decoupling to suppress PSRR degradation above 100 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers ±2.4 V into 2 kΩ at ±2.5 V supply - maximizes dynamic range without clipping in low-voltage audio chains. |
| Low input voltage noise | 4 nV/√Hz at 100 kHz - reduces integrated noise floor below 1 µV RMS over 20 Hz–20 kHz bandwidth. |
| Low total harmonic distortion | 0.003 % at 1 kHz - ensures transparent amplification for voice and music without coloration. |
| Wide supply voltage range | 2.7 V to 10 V - eliminates need for dedicated analog supply rails in mixed-signal portable systems. |
| Unity-gain stable | Compensated for stable operation with capacitive loads ≤100 pF - simplifies layout in compact PCBs with long traces. |
Applications
| Microphone Pre-amplifier | Sound Card Line Driver |
|---|---|
|
Use Scenario: Amplifying weak AC-coupled signals from electret condenser microphones in portable voice recorders. IC Role / Device Role / Timing Role: First-stage gain block with 20–40 dB fixed gain, configured as non-inverting amplifier with DC bias on non-inverting input. Use Value: 4 nV/√Hz noise and 0.003 % THD preserve speech intelligibility and reduce post-processing requirements. |
Use Scenario: Driving line-level outputs (2 Vpp) from DACs to external audio interfaces in embedded multimedia players. IC Role / Device Role / Timing Role: Output buffer with rail-to-rail swing and low output impedance (<100 Ω) to drive 10 kΩ loads. Use Value: ±2.4 V swing at 2.7 V supply ensures full-scale signal delivery without headroom loss or clipping. |
| PDA Audio Front-end | CD Player Signal Conditioning |
|
Use Scenario: Signal conditioning between MEMS microphone and stereo codec in handheld PDAs with tight board area constraints. IC Role / Device Role / Timing Role: Single-supply op-amp with VDD = GND and VCC = 3.3 V, AC-coupled input/output. Use Value: SOT23-5 footprint (2.9 × 2.8 mm) enables placement adjacent to codec ICs without routing congestion. |
Use Scenario: Post-DAC filtering and level-shifting in portable CD players operating from dual alkaline cells (3 V). IC Role / Device Role / Timing Role: Active low-pass filter stage (2nd-order Butterworth) with gain = 1 and cutoff = 20 kHz. Use Value: 12 MHz GBP and 4 V/µs slew rate support clean filter response up to Nyquist frequency without phase lag. |
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 |
|---|---|---|---|
| TLV2461IDBVR | Higher input bias current (1 pA typ vs. 200 nA typ), lower GBP (6.4 MHz), no specified THD value. | Optimized for precision sensor signal conditioning rather than audio; lacks verified THD performance. | Prefer TS461CD where THD < 0.01 % and rail-to-rail swing at ≤3 V are mandatory. |
| MCP6001T-I/OT | Lower supply current (100 µA vs. 2.8 mA), lower GBP (1 MHz), higher THD (0.05 %), no rail-to-rail output at <3 V. | Targeted at ultra-low-power sensor monitoring, not audio fidelity-critical paths. | Choose TS461CD when audio SNR > 95 dB and output swing >95 % of rails are required at 2.7–5 V. |
Compared with TLV2461IDBVR and MCP6001T-I/OT, TS461CD uniquely balances low-noise audio performance, rail-to-rail output at sub-3 V supplies, and verified 0.003 % THD - making it the only option among the three qualified for CD-quality microphone pre-amplification in portable devices.
Availability
TS461CD is available at Aetrix Electronics and suitable for sound cards, PDAs, and CD players requiring stable component supply with guaranteed long-term production continuity through April 2026.
Supply support for TS461CD 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 automotive, industrial, and consumer markets.
TS461CD belongs to ST's TS46x rail-to-rail output op-amp family, engineered specifically for high-fidelity, low-voltage audio signal paths in portable and battery-powered equipment.
FAQ
What is the maximum junction temperature for TS461CD?
The absolute maximum junction temperature for TS461CD is 150 °C, as specified in Table 1 of the DS1416 Rev 4 datasheet. With a SOT23-5 package thermal resistance of 250 °C/W, continuous operation at ambient temperatures above 70 °C requires careful PCB thermal design, including ≥1 cm² of 2-oz copper connected to pin 4 (VDD) for heat dissipation.
Can TS461CD operate from a single 3.3 V supply?
Yes - TS461CD supports single-supply operation from 2.7 V to 10 V. At 3.3 V, its common-mode input range is 2.45 V to 1.15 V (VDD +1.15 V to VCC −1.15 V), and output swing reaches ±1.5 V (3 Vpp) into 2 kΩ, delivering >90 % rail utilization for 2 Vpp line-level signals.
Is TS461CD pin-compatible with other TS46x variants?
No - TS461CD (SOT23-5) has a different pin count and layout than TS462CDT (SO-8, dual) or TS464CDT (SO-14, quad). The SOT23-5 pinout is unique to the single-channel TS461 series; no mechanical or electrical pin compatibility exists across the TS46x family due to differing channel counts and packages.
Does TS461CD require external compensation components?
No - TS461CD is internally compensated for unity-gain stability and does not require external compensation. It remains stable driving capacitive loads up to 100 pF, as verified in the DS1416 Rev 4 datasheet (Section 2, Electrical Characteristics, f = 100 kHz test condition).
TS461CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
TS461CD FAQ
1.How can I place an order for TS461CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TS461CD 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 TS461CD reliable?
The price and inventory of TS461CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS461CD is usually 5 days.
3.What payment methods are accepted for TS461CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS461CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS461CD?
TS461CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS461CD 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 TS461CD?
For technical support, including TS461CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS461CD requirements.
6.How does Aetrix verify that TS461CD is sourced from the original manufacturer or authorized distributors?
All TS461CD 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 TS461CD meets industry standards.
7.What is the process for return or replacement of TS461CD?
All TS461CD units undergo pre-shipment inspection (PSI). If there is an issue with TS461CD, 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 TS461CD part is unused and in its original packaging.
Return procedure for TS461CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS461CD Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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