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STMicroelectronics TS1871AIYLT
- Part No.:
- TS1871AIYLT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS1871AIYLT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,328
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Product details
Overview
TS1871AIYLT from STMicroelectronics is a single-channel, rail-to-rail input/output operational amplifier optimized for ultra-low-voltage battery-powered systems. It operates from 1.8 V to 6 V supply, delivers 1.6 MHz gain bandwidth, consumes only 400 µA per channel, and supports extended common-mode input range (VCC− − 0.2 V to VCC+ + 0.2 V) at 25 °C - enabling direct sensor interfacing in portable medical monitors and low-power IoT endpoints.
For engineers reviewing the TS1871AIYLT datasheet, TS1871AIYLT pinout, TS1871AIYLT application, or TS1871AIYLT equivalent, this AEC-Q100 qualified SOT23-5L op-amp is selected for precision analog front-ends where supply headroom is constrained, output swing must reach within 100 mV of rails under 600 Ω load, and ESD tolerance (2 kV HBM) and latch-up immunity are mandatory for automotive-grade reliability.
Technical Context
The TS1871AIYLT implements a CMOS input stage with rail-to-rail differential pair architecture, enabling full-swing input operation beyond supply rails by ±200 mV. Its unity-gain-stable internal compensation delivers consistent phase margin (≥53°) across 1.8–6 V supplies and load capacitances up to 100 pF.
Output stage uses complementary push-pull topology capable of sourcing/sinking ≥65 mA, supporting headphone driver loads and active filter stages without external buffers. Input offset voltage is trimmed to 1.5 mV max over temperature, and input bias current remains below 150 nA across −40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 6 V - enables direct operation from single Li-ion, two alkaline, or regulated 3.3 V/5 V rails without level-shifting. |
| Gain Bandwidth Product | 1.6 MHz typical - supports closed-loop bandwidths up to ~150 kHz in unity-gain buffer configuration with 100 pF load. |
| Input Offset Voltage | 1.5 mV max over −40 °C to +125 °C - ensures ≤0.3% error in 0–5 V sensor signal conditioning without trimming. |
| Supply Current per Channel | 400 µA typical at 1.8 V - allows >10-year battery life in always-on wearable health sensors drawing <1 µA system sleep current. |
| Output Swing (600 Ω load) | Within 100 mV of each rail - delivers full dynamic range for 16-bit ADC drivers and audio line-level outputs. |
| Common-Mode Input Range | VCC− − 0.2 V to VCC+ + 0.2 V at 25 °C - accepts ground-referenced thermistor or bridge sensor outputs without bias resistors. |
| ESD Tolerance (HBM) | 2 kV - meets IEC 61000-4-2 Level 2 for handheld device touch interfaces and exposed sensor nodes. |
Pinout & Package
SOT23-5L package: 5-pin, 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch, gull-wing leads, RoHS-compliant and ECOPACK® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives 600 Ω loads to within 100 mV of VCC−/VCC+; requires no external compensation for unity-gain stability. |
| 2 (−IN) | Inverting input | Differential input node; high-impedance CMOS input (Iib ≤ 150 nA); accepts signals from VCC− − 0.2 V to VCC+ + 0.2 V. |
| 3 (VCC−) | Negative supply | Ground reference for single-supply operation; connects directly to PCB ground plane; supports true 0 V input capability. |
| 4 (+IN) | Non-inverting input | Differential input node; identical specs to −IN; used for follower, summing, or instrumentation amplifier configurations. |
| 5 (VCC+) | Positive supply | Accepts 1.8–6 V; internal regulation not required; decoupling capacitor (100 nF) recommended within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8 V supply in sensor signal chains - eliminates need for level-shifting or dual supplies. |
| Extended common-mode input range | VCC− − 0.2 V to VCC+ + 0.2 V at 25 °C - permits direct connection of grounded thermocouples or shunt-based current sensors. |
| Low quiescent current | 400 µA per channel at 1.8 V - reduces power dissipation to 0.72 µW, critical for coin-cell-powered edge nodes. |
| High output drive capability | 65 mA source/sink current - drives 16 Ω headphones directly or 2 kΩ feedback networks without gain loss. |
| AEC-Q100 qualified | Automotive grade (Grade 1: −40 °C to +125 °C), qualified per Q100-003 and screened per Q001/Q002 - suitable for ADAS camera modules and body control units. |
Applications
| Portable Medical Sensors | Automotive Cabin Monitoring |
|---|---|
|
Use Scenario: Amplifying microvolt-level ECG signals from dry electrodes in patch-style heart rate monitors. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end with DC-coupled input and rail-to-rail output driving 16-bit SAR ADC. Use Value: Extended Vicm allows direct electrode connection without bias network; 1.6 MHz GBW supports 1 kHz anti-aliasing filtering; 400 µA current extends 2-week battery life. |
Use Scenario: Signal conditioning for infrared cabin occupancy sensors detecting seat position and occupant presence. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier converting photodiode current to voltage, followed by rail-to-rail buffer. Use Value: 27 nV/√Hz input noise preserves SNR in low-light conditions; AEC-Q100 qualification ensures reliability across thermal cycling in vehicle cabins. |
| Wireless Earbud Audio | Industrial Battery Gauges |
|
Use Scenario: Driving balanced armature speakers in true wireless stereo earbuds powered by 3.7 V Li-Po cells. IC Role / Device Role / Timing Role: Ground-referenced headphone driver with shutdown control, operating from 1.8 V LDO output. Use Value: Rail-to-rail output delivers 1.6 VPP into 32 Ω load; 65 mA drive capability avoids external Class AB stage; 2 kV ESD protects against user handling discharge. |
Use Scenario: Precision voltage measurement of 4-cell NiMH battery packs (4.8–6.0 V) in cordless power tools. IC Role / Device Role / Timing Role: High-side current sense amplifier with 50× gain, referenced to battery positive terminal. Use Value: Extended Vicm accommodates common-mode voltage up to 6.2 V; 1.5 mV Vos max ensures ≤1% current measurement error at 10 A load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-voltage operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT (Microchip) | Lower GBP (1 MHz), higher Vos (2.5 mV max), same SOT23-5 package and 1.8–6 V range. | Lacks AEC-Q100 qualification; not rated for automotive temperature range. | Select when cost sensitivity outweighs automotive compliance and 0.6 MHz bandwidth reduction is acceptable. |
| LMV321IDBVR (TI) | Higher supply current (120 µA typical at 1.8 V), lower output drive (40 mA), non-automotive grade. | Specified only to +85 °C; lacks extended Vicm (limited to VCC− to VCC+). | Choose for industrial consumer devices where extended temperature and rail-to-rail input are not required. |
Compared with MCP6001T-E/OT and LMV321IDBVR, the TS1871AIYLT provides superior rail-to-rail input performance, AEC-Q100 qualification, and higher output drive - making it the only option among the three suitable for automotive cabin sensors and battery-powered medical wearables requiring full 125 °C operation.
Availability
TS1871AIYLT is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin monitoring systems, wireless earbud audio drivers, and industrial battery gauges requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS1871AIYLT 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 smart mobility, power, and sensing applications.
The TS187x family targets ultra-low-power analog signal conditioning in space-constrained, battery-operated systems - emphasizing rail-to-rail operation, extended input range, and automotive qualification for next-generation portable and vehicular electronics.
FAQ
Is TS1871AIYLT pin-compatible with TS1871ILT?
Yes - both share identical SOT23-5L pinout (OUT, −IN, VCC−, +IN, VCC+). The TS1871AIYLT is the automotive-grade variant (AEC-Q100 Grade 1, −40 °C to +125 °C), while TS1871ILT is industrial grade (−40 °C to +85 °C). Electrical specs are identical; only qualification and screening differ.
What is the maximum capacitive load the TS1871AIYLT can drive without oscillation?
The TS1871AIYLT remains unity-gain stable with up to 100 pF capacitive load, as confirmed by phase margin ≥53° in Figure 33. For loads >100 pF, a series resistor (10–50 Ω) between output and capacitor is required to maintain stability, especially in ADC driver or cable-driving applications.
Does TS1871AIYLT support single-supply operation with input signals at ground potential?
Yes - its extended common-mode input range includes VCC− − 0.2 V, allowing direct connection of 0 V-referenced sources (e.g., thermistors, shunt resistors, piezoelectric sensors) when VCC− = GND. No external bias network is needed for DC-coupled ground-level inputs.
How does the 2 kV HBM ESD rating impact PCB layout for TS1871AIYLT?
The 2 kV HBM rating requires standard ESD-aware layout: keep input traces short and away from connectors; place 100 nF ceramic decoupling cap within 2 mm of VCC+/VCC−; avoid floating pins (tie unused +IN/−IN to known potentials); and use guard rings around sensitive analog nodes to prevent field coupling from nearby digital lines.
TS1871AIYLT 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TS1871AIYLT FAQ
1.How can I place an order for TS1871AIYLT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1871AIYLT 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 TS1871AIYLT reliable?
The price and inventory of TS1871AIYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1871AIYLT is usually 5 days.
3.What payment methods are accepted for TS1871AIYLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1871AIYLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1871AIYLT?
TS1871AIYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1871AIYLT 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 TS1871AIYLT?
For technical support, including TS1871AIYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1871AIYLT requirements.
6.How does Aetrix verify that TS1871AIYLT is sourced from the original manufacturer or authorized distributors?
All TS1871AIYLT 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 TS1871AIYLT meets industry standards.
7.What is the process for return or replacement of TS1871AIYLT?
All TS1871AIYLT units undergo pre-shipment inspection (PSI). If there is an issue with TS1871AIYLT, 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 TS1871AIYLT part is unused and in its original packaging.
Return procedure for TS1871AIYLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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