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STMicroelectronics TS1871ILT
- Part No.:
- TS1871ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS1871ILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,162
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Product details
Overview
TS1871ILT from STMicroelectronics is a single-channel, rail-to-rail input/output operational amplifier optimized for ultra-low-voltage operation (1.8 V to 6 V supply), delivering 1.6 MHz gain bandwidth, 400 µA supply current per channel, and ±200 mV extended common-mode input range beyond rails at 25 °C - deployed in battery-powered audio drivers and portable communication interfaces.
For engineers reviewing the TS1871ILT datasheet, TS1871ILT pinout, TS1871ILT application, or TS1871ILT equivalent, key selection criteria include its 1.8 V minimum supply capability, rail-to-rail output swing within 100 mV of each rail under 600 Ω load, 65 mA typical output drive, 27 nV/√Hz input voltage noise at 1 kHz, and SOT23-5L package compatibility with space-constrained portable designs.
Technical Context
The TS1871ILT implements a CMOS input stage enabling rail-to-rail input common-mode range extending 200 mV beyond VCC− and VCC+, while its output stage achieves rail-to-rail swing with <100 mV headroom into 600 Ω at full temperature range (−40 °C to +125 °C). It maintains unity-gain stability without external compensation across all supply voltages from 1.8 V to 6 V.
Its 1.6 MHz gain bandwidth product and 0.54 V/µs slew rate support moderate-speed signal conditioning in sensor front-ends and headphone driver stages, while 2 kV HBM ESD tolerance and latch-up immunity ensure robustness in handheld device environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 6 V - enables direct integration into single-cell Li-ion (3.0–3.7 V), NiMH (1.2 V × 2), or coin-cell (1.5–3.0 V) powered systems without LDO pre-regulation. |
| Gain Bandwidth Product | 1.6 MHz - supports stable closed-loop gain ≥10 up to ~160 kHz, suitable for anti-aliasing filters and audio pre-amplification. |
| Supply Current per Channel | 400 µA typ. - allows >1000 hours of continuous operation on a 400 mAh coin cell in always-on sensor monitoring applications. |
| Input Offset Voltage | 1 mV max (TS1871) - ensures ≤1 mV error in 1 V full-scale bridge sensor outputs, critical for precision low-voltage instrumentation. |
| Output Drive Capability | 65 mA source / 80 mA sink - drives 16 Ω headphones directly or 600 Ω loads to within 100 mV of rails, eliminating need for external buffer stages. |
| Input Voltage Noise | 27 nV/√Hz at 1 kHz - preserves SNR in microphone preamps and low-level analog sensor interfaces where signal amplitudes are sub-10 mV. |
Pinout & Package
SOT23-5L package: 5-pin, ultra-small outline transistor (2.9 mm × 2.8 mm × 1.3 mm), surface-mount, lead-free, ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ≥65 mA; requires no external pull-up/down for DC-coupled loads. |
| 2 (−IN) | Inverting input | High-impedance CMOS node; accepts common-mode inputs from VCC− −0.2 V to VCC+ +0.2 V at 25 °C. |
| 3 (VCC−) | Negative supply rail | Ground reference for single-supply operation; must be connected to system GND when using 1.8–6 V single-rail configuration. |
| 4 (+IN) | Non-inverting input | High-impedance CMOS node; identical common-mode range as −IN; used for unity-gain buffers and non-inverting amplifiers. |
| 5 (VCC+) | Positive supply rail | Accepts 1.8–6 V; internal biasing scales with VCC+; quiescent current remains stable across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 1.8 V systems - e.g., 0–1.8 V ADC interface without level-shifting circuitry. |
| Extended Vicm (±200 mV beyond rails) | Permits direct connection to sensors biased outside supply rails (e.g., thermocouples, piezoelectric elements) without clamping diodes. |
| Low 400 µA supply current | Reduces thermal load in sealed enclosures and extends battery life in wearable devices operating at 1–10 µA sleep currents. |
| High output drive (65 mA) | Eliminates need for discrete output transistors in headphone drivers and low-impedance sensor excitation circuits. |
| 2 kV HBM ESD rating | Meets IEC 61000-4-2 Level 2 requirements for handheld consumer electronics without external protection components. |
Applications
| Portable Audio Amplification | Battery-Powered Sensor Interface |
|---|---|
|
Use Scenario: Driving 16–32 Ω stereo headphones from a 3.3 V microcontroller DAC output in Bluetooth earbuds. IC Role / Device Role: Single-supply, rail-to-rail output buffer with DC-coupled gain stage. Use Value: Delivers >100 mW into 16 Ω with <0.01% THD, eliminating coupling capacitors and reducing BOM count by two 100 µF electrolytics. |
Use Scenario: Amplifying low-level (±10 mV) output from a MEMS pressure sensor in a smart inhaler device. IC Role / Device Role: Precision, low-noise, single-supply instrumentation amplifier front-end. Use Value: 27 nV/√Hz noise and 1 mV offset enable 12-bit effective resolution at 1.8 V supply, matching 12-bit SAR ADC performance. |
| Low-Voltage IoT Node Signal Conditioning | Energy-Harvesting Power Management Monitor |
|
Use Scenario: Buffering and scaling thermistor voltage for ADC input in a coin-cell-powered environmental sensor node. IC Role / Device Role: Rail-to-rail input/output voltage follower and gain stage operating from 1.8 V. Use Value: Extended Vicm allows direct connection to thermistor divider biased at 0.2 V below GND or 0.2 V above VCC, maximizing measurement range. |
Use Scenario: Monitoring supercapacitor voltage during charge/discharge cycles in a solar-harvesting wireless sensor. IC Role / Device Role: Low-quiescent-current comparator input buffer and voltage monitor amplifier. Use Value: 400 µA ICC enables continuous monitoring without depleting µW-level harvested energy - critical for duty-cycled wake-up architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-voltage op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-I/OT (Microchip) | Lower GBP (1 MHz), higher Vio (3 mV max), same 1.8 V min supply and SOT23-5 package. | Less suitable for audio or high-gain sensor stages requiring <2 mV offset or >1.2 MHz bandwidth. | Select when cost sensitivity outweighs need for 1.6 MHz bandwidth or sub-2 mV offset. |
| TLV9001IDBVR (TI) | Higher ICC (650 µA), wider Vicm (rail-to-rail), lower noise (18 nV/√Hz), but requires ≥1.8 V and uses same SOT23-5 footprint. | Better for noise-critical sensor nodes; less optimal for multi-day battery life in always-on monitoring. | Select when input noise dominates system error budget and power budget allows +250 µA per channel. |
Compared with MCP6001T-I/OT, TS1871ILT offers 60% higher bandwidth and tighter offset for precision gain stages; versus TLV9001IDBVR, it reduces supply current by 38% at the cost of 9 nV/√Hz higher noise - making it optimal for battery-limited, medium-bandwidth signal chains.
Availability
TS1871ILT is available at Aetrix Electronics and suitable for portable audio amplification, battery-powered sensor interfaces, low-voltage IoT node signal conditioning, and energy-harvesting power management monitoring requiring stable component supply across automotive-grade and industrial temperature ranges.
Supply support for TS1871ILT 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 silicon solutions for automotive, industrial, and consumer markets since 1987.
The TS187x family was developed specifically for ultra-low-voltage, low-power analog signal conditioning in portable and battery-constrained systems - emphasizing rail-to-rail operation, extended common-mode range, and robustness in unregulated supply environments.
FAQ
Is the TS1871ILT qualified for automotive applications?
No - TS1871ILT is the industrial-grade variant rated for −40 °C to +125 °C operation. For automotive use, ST specifies TS1871IYLT (AEC-Q100 qualified, SOT23-5L, marking K182), which shares identical electrical specs but undergoes additional screening and traceability controls required for automotive electronics.
Can the TS1871ILT drive a 100 pF capacitive load stably?
Yes - the TS1871ILT is unity-gain stable with capacitive loads up to 100 pF, as confirmed by phase margin ≥53° in Figure 33 and gain margin analysis in Figure 35 of the datasheet; no series resistor or isolation capacitor is needed for typical PCB trace capacitance.
What is the maximum output current before thermal shutdown?
The TS1871ILT delivers up to 80 mA sink or source continuously without thermal shutdown under normal PCB layout conditions (250 °C/W RthJA); however, sustained >65 mA output into low-impedance loads at elevated ambient temperatures (>85 °C) may trigger thermal limiting due to junction temperature exceeding 150 °C.
Does the TS1871ILT require external compensation for gain ≥10?
No - the TS1871ILT is internally compensated for unity-gain stability across its full 1.8–6 V supply range and temperature specification; no external compensation components are required for closed-loop gains from 1 to 100, as verified by phase margin ≥53° in all test conditions (Tables 4–6, Figures 25–27).
TS1871ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1.8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 500µA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TS1871ILT FAQ
1.How can I place an order for TS1871ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1871ILT 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 TS1871ILT reliable?
The price and inventory of TS1871ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1871ILT is usually 5 days.
3.What payment methods are accepted for TS1871ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1871ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1871ILT?
TS1871ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1871ILT 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 TS1871ILT?
For technical support, including TS1871ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1871ILT requirements.
6.How does Aetrix verify that TS1871ILT is sourced from the original manufacturer or authorized distributors?
All TS1871ILT 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 TS1871ILT meets industry standards.
7.What is the process for return or replacement of TS1871ILT?
All TS1871ILT units undergo pre-shipment inspection (PSI). If there is an issue with TS1871ILT, 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 TS1871ILT part is unused and in its original packaging.
Return procedure for TS1871ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS1871ILT Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902DR
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LM358P
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