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STMicroelectronics TS1871IDT
- Part No.:
- TS1871IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS1871IDT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,469
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Product details
Overview
TS1871IDT 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 - used in battery-powered audio drivers and portable communication interfaces.
For engineers reviewing the TS1871IDT datasheet, TS1871IDT pinout, TS1871IDT application, or TS1871IDT equivalent, key selection criteria include rail-to-rail output swing within 100 mV of rails under 600 Ω load, 65 mA output drive capability, and guaranteed operation down to 1.8 V with high unity-gain stability across temperature (–40 °C to +125 °C).
Technical Context
The TS1871IDT employs a CMOS input stage enabling rail-to-rail input common-mode range extending 200 mV beyond VCC– and VCC+, while its output stage delivers true rail-to-rail swing - within 100 mV of each supply rail with 600 Ω load. It achieves stable unity-gain operation without external compensation due to internal phase margin optimization (53°–55°) and low 27 nV/√Hz input voltage noise.
Its architecture supports low-power sensor interface and portable signal conditioning by combining micropower consumption (400–875 µA over 1.8–5 V) with robust ESD tolerance (2 kV HBM), latch-up immunity, and wide operating temperature range (–40 °C to +125 °C), making it suitable for space-constrained, battery-sensitive designs requiring precision analog front-ends.
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, NiMH, or alkaline-powered systems without level-shifting. |
| Gain Bandwidth Product | 1.6 MHz typical - supports stable amplification of audio-band signals (up to ~100 kHz closed-loop) with minimal phase lag. |
| Supply Current per Channel | 400 µA typical at 1.8 V - extends battery life in always-on sensor nodes and portable devices. |
| Input Offset Voltage | 1.5 mV max over temperature - ensures <100 µV error in 100× gain configurations for precision DC-coupled sensing. |
| Output Drive Capability | 65 mA source / 80 mA sink - drives low-impedance loads such as 150 Ω headphone outputs or 600 Ω instrumentation lines. |
| Common-Mode Input Range | VCC– – 0.2 V to VCC+ + 0.2 V at 25 °C - accepts inputs beyond supply rails, simplifying interfacing with DACs or sensors operating at different reference levels. |
| ESD Tolerance | 2 kV HBM - meets IEC 61000-4-2 Level 2 requirements for handheld device front-end protection. |
Pinout & Package
TS1871IDT is packaged in SO-8 (Small Outline Integrated Circuit, 8-pin), a surface-mount package with 1.27 mm lead pitch, 4.9 mm × 6.0 mm body, and ECOPACK® RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (–) | Differential input node accepting signal referenced to non-inverting input; high-impedance CMOS input (125 nA bias current max). |
| 2 | Non-Inverting Input (+) | Differential input node setting reference point; shares same rail-to-rail common-mode range as Pin 1. |
| 3 | Output | Push-pull output capable of sourcing/sinking up to 80 mA; swings within 100 mV of VCC–/VCC+ under 600 Ω load. |
| 4 | VCC– (Ground) | Negative supply terminal; must be connected to system ground or negative rail; supports single-supply operation down to 0 V. |
| 5 | VCC+ | Positive supply terminal; accepts 1.8–6 V; decoupling capacitor (100 nF) recommended adjacent to this pin. |
| 6–8 | No Connect (NC) | Internally unconnected pins; left floating or tied to ground per layout best practices to reduce parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply systems - e.g., 0–1.8 V input accepted and 0–1.8 V output delivered with <100 mV headroom. |
| Extended common-mode input range | VCC– – 0.2 V to VCC+ + 0.2 V allows interfacing with overvoltage-tolerant sensors or DACs without external clamping diodes. |
| Low quiescent current | 400 µA per channel at 1.8 V reduces total system power - critical for multi-channel portable devices where cumulative current matters. |
| High output drive strength | 65 mA source / 80 mA sink supports direct driving of 150 Ω headphones or 600 Ω transmission lines without external buffers. |
| Unity-gain stable | No external compensation required - simplifies PCB layout and reduces BOM count in gain-of-1 buffer, active filter, or I/V converter applications. |
Applications
| Audio Signal Conditioning | Portable Sensor Interface |
|---|---|
Use Scenario: Driving 150 Ω stereo headphone loads from a 3.3 V microcontroller DAC output in a Bluetooth headset. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as unity-gain buffer and level shifter between DAC and transducer. Use Value: Delivers full 0–3.3 V swing to headphones with <0.01% THD and 27 nV/√Hz noise, eliminating need for dual supplies or discrete biasing networks. | Use Scenario: Amplifying low-level thermistor or bridge-sensor outputs in a wearable health monitor powered by a 1.8 V coin cell. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail input accepting sensor common-mode near ground or VCC. Use Value: Maintains accuracy across –40 °C to +85 °C with only 2 µV/°C offset drift and 400 µA current draw, extending battery life beyond 6 months. |
| Battery-Powered Communication | Laptop Subsystem Monitoring |
Use Scenario: Signal conditioning for microphone preamplifier in a USB-C earbud with integrated ADC, operating from 1.8 V LDO. IC Role / Device Role / Timing Role: Low-noise, low-power op-amp in AC-coupled gain stage before sigma-delta ADC sampling at 48 kHz. Use Value: 27 nV/√Hz input noise and 1.6 MHz GBP ensure >90 dB SNR up to 20 kHz, while 400 µA current avoids loading the 1.8 V rail. | Use Scenario: Monitoring battery voltage and system rail health in an ultrabook's embedded controller subsystem. IC Role / Device Role / Timing Role: High-impedance voltage divider buffer feeding ADC input, operating across full industrial temperature range. Use Value: Extended Vicm (±0.2 V beyond rails) allows accurate measurement of VBAT (2.5–4.2 V) and 5 V/3.3 V rails using single 3.3 V supply, reducing component count. |
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 |
|---|---|---|---|
| TLV9001IDBVR | Lower 1.2 MHz GBP, higher 150 µA supply current, but superior 0.3 mV max Vio and 0.01 µV/°C drift. | Better for DC-critical sensor bridges; less suitable for audio bandwidth or high-output-drive needs. | Choose TLV9001 when offset and drift dominate over speed and drive; verify stability with 100 pF load. |
| MCP6001T-I/OT | Higher 1 µA supply current, narrower 1.0 MHz GBP, and limited 100 mV output swing headroom at 1.8 V. | Acceptable for low-frequency monitoring, but insufficient for 150 Ω headphone drive or 100 kHz signal paths. | Select MCP6001 only for cost-sensitive, low-bandwidth (<100 kHz), non-audio applications where 1 µA current is acceptable. |
Compared with TLV9001IDBVR and MCP6001T-I/OT, TS1871IDT uniquely balances 1.6 MHz bandwidth, 65 mA drive, and 400 µA quiescent current at 1.8 V - making it the only option among the three capable of simultaneously meeting audio-linearity, battery-life, and load-driving requirements in portable systems.
Availability
TS1871IDT is available at Aetrix Electronics and suitable for battery-powered audio drivers, portable sensor interfaces, and laptop subsystem monitoring requiring stable component supply with long-term manufacturability and automotive-grade traceability options.
Supply support for TS1871IDT 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 industrial, automotive, and consumer markets.
The TS187x family was developed specifically for ultra-low-voltage, rail-to-rail signal conditioning in space- and power-constrained portable electronics - emphasizing micropower operation, wide supply flexibility, and robustness in real-world battery-powered environments.
FAQ
Is TS1871IDT unity-gain stable without external compensation?
Yes. The TS1871IDT is internally compensated for unity-gain stability across its full operating range (1.8–6 V, –40 °C to +125 °C), with measured phase margin of 53°–55° at 100 pF capacitive load. No external compensation components are required for stable operation in buffer, follower, or gain-of-1 configurations.
What is the maximum output current capability of TS1871IDT at 1.8 V supply?
At 1.8 V supply, TS1871IDT delivers up to 58 mA source current and 68 mA sink current (typical, Tamb = 25 °C), with guaranteed minimums of 20 mA in both directions over temperature. Short-circuit duration is not specified, but destructive dissipation occurs if multiple outputs are shorted simultaneously.
Can TS1871IDT operate with input voltages beyond the supply rails?
Yes. Its common-mode input voltage range extends to VCC– – 0.2 V and VCC+ + 0.2 V at 25 °C, allowing inputs 200 mV below ground or above VCC. This eliminates need for external level-shifting when interfacing with overvoltage-tolerant sensors or DACs, provided differential input voltage stays within ±1 V.
Does TS1871IDT support operation at –40 °C to +125 °C with full parameter guarantees?
Yes. All key electrical parameters - including supply current (400–875 µA), input offset voltage (≤6 mV), CMRR (≥52 dB), and output swing - are fully specified and tested across –40 °C to +125 °C per Table 3 and Tables 4–6 in the official datasheet (Doc ID 6992 Rev 7).
TS1871IDT 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:
- 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:
- 8-SOIC
TS1871IDT FAQ
1.How can I place an order for TS1871IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1871IDT 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 TS1871IDT reliable?
The price and inventory of TS1871IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1871IDT is usually 5 days.
3.What payment methods are accepted for TS1871IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1871IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1871IDT?
TS1871IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1871IDT 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 TS1871IDT?
For technical support, including TS1871IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1871IDT requirements.
6.How does Aetrix verify that TS1871IDT is sourced from the original manufacturer or authorized distributors?
All TS1871IDT 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 TS1871IDT meets industry standards.
7.What is the process for return or replacement of TS1871IDT?
All TS1871IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS1871IDT, 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 TS1871IDT part is unused and in its original packaging.
Return procedure for TS1871IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS1871IDT Tags
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