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STMicroelectronics TS1872AIDT
- Part No.:
- TS1872AIDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS1872AIDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,401
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Product details
Overview
TS1872AIDT from STMicroelectronics is a dual-channel, rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It operates from 1.8 V to 6 V supply, delivers 1.6 MHz gain bandwidth product, consumes 400 µA per channel, and supports extended common-mode input range (VCC− − 0.2 V to VCC+ + 0.2 V) at 25 °C - enabling use in battery-powered audio drivers and portable sensor interfaces.
For engineers reviewing the TS1872AIDT datasheet, TS1872AIDT pinout, TS1872AIDT application, or TS1872AIDT equivalent, key selection criteria include its 1.8 V minimum supply voltage, rail-to-rail output swing within 100 mV of rails (600 Ω load), 65 mA typical output drive, 27 nV/√Hz input voltage noise, and guaranteed operation from −40 °C to +125 °C.
Technical Context
The TS1872AIDT implements a CMOS input stage with rail-to-rail differential pair architecture, enabling full input voltage range beyond supply rails by ±200 mV. Its output stage uses complementary push-pull transistors to achieve rail-to-rail swing under 600 Ω load while maintaining stability with 100 pF capacitive loads.
It features high unity-gain stability without external compensation, 53°–55° phase margin across supply voltages (1.8–5 V), and robust latch-up immunity (200 mA). The amplifier's 2 µV/°C input offset drift and 0.38–0.6 V/µs slew rate support precision DC-coupled and moderate-bandwidth AC signal conditioning.
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 3.3 V/5 V systems without level-shifting. |
| Gain Bandwidth Product | 1.6 MHz (typ.) - supports closed-loop bandwidth up to ~150 kHz at gain = 10, suitable for sensor amplification and audio pre-amplification. |
| Supply Current per Channel | 400 µA (typ.) - allows dual op-amp operation on <1 mA total, critical for multi-day battery life in portable devices. |
| Input Offset Voltage | 1 mV (typ.), 6 mV (max) over temperature - ensures ≤10 mV error in 10× gain configurations without trimming. |
| Output Drive Capability | 65 mA (typ.) source/sink - drives 600 Ω loads to rail with <100 mV headroom, sufficient for headphone drivers and analog multiplexer buffers. |
| Input Voltage Noise | 27 nV/√Hz at 1 kHz - maintains SNR >90 dB in 20 kHz audio band with 10 kΩ source impedance. |
| Common-Mode Input Range | VCC− − 0.2 V to VCC+ + 0.2 V at 25 °C - accepts signals below ground or above VCC, simplifying single-supply sensor interfacing. |
Pinout & Package
TS1872AIDT is packaged in an SO-8 (Small Outline Integrated Circuit, 8-pin) surface-mount package with standard 1.27 mm pitch. The package complies with ECOPACK® environmental specifications and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel 1) | Differential input node for first op-amp; accepts rail-to-rail common-mode voltage. |
| 2 | Non-inverting Input (Channel 1) | Differential input node for first op-amp; matched bias current to Pin 1. |
| 3 | Output (Channel 1) | Rail-to-rail output capable of sourcing/sinking 65 mA into 600 Ω load. |
| 4 | VCC− (Ground/Reference) | Negative supply terminal; connects to system ground in single-supply configurations. |
| 5 | Non-inverting Input (Channel 2) | Differential input node for second op-amp; electrically isolated from Channel 1. |
| 6 | Inverting Input (Channel 2) | Differential input node for second op-amp; matched to Pin 5 for common-mode rejection. |
| 7 | Output (Channel 2) | Independent rail-to-rail output; no crosstalk with Channel 1 at ≤100 kHz. |
| 8 | VCC+ (Positive Supply) | Positive supply terminal; supports 1.8–6 V operation with 400 µA/channel quiescent draw. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 1.8 V systems; eliminates need for level-shifting circuitry. |
| Extended common-mode input range (±200 mV beyond rails) | Permits direct connection of sensors with output offsets exceeding supply limits, e.g., thermocouples or bridge transducers. |
| Low 400 µA/channel supply current | Reduces thermal load and extends battery runtime in always-on wearable or IoT sensor nodes. |
| High output drive (65 mA) | Drives low-impedance loads such as 16 Ω headphones or analog switches without external buffers. |
| 1.6 MHz GBW with unity-gain stability | Supports stable closed-loop operation at gains ≥1 without external compensation components. |
| 2 kV HBM ESD tolerance | Survives handling and board-level ESD events without protection diodes, reducing BOM count. |
Applications
| Battery-Powered Audio Interface | Portable Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving stereo headphone outputs in Bluetooth earbuds powered by a single 3.7 V Li-ion cell stepped down to 3.3 V. IC Role / Device Role / Timing Role: Dual op-amp configured as two independent headphone drivers with DC-coupled outputs and rail-to-rail swing. Use Value: Delivers 10 mW into 16 Ω loads with <0.01% THD at 1 kHz using only 800 µA total supply current. |
Use Scenario: Amplifying low-level output from a MEMS pressure sensor in a handheld medical device operating from coin-cell battery. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with rail-to-rail input accepting sensor common-mode near ground. Use Value: Maintains 55 dB CMRR over full temperature range while consuming <1 mA total, extending battery life to >12 months. |
| Laptop Touchpad Controller Interface | Industrial Battery Monitor Front-End |
|
Use Scenario: Buffering and scaling analog outputs from capacitive touch sensing ICs in ultrabook designs with tight power budgets. IC Role / Device Role / Timing Role: Dual buffer isolating high-impedance touch sensor outputs from ADC input stages. Use Value: Provides 27 nV/√Hz noise floor and 1.6 MHz bandwidth to preserve touch response fidelity without adding latency. |
Use Scenario: Monitoring individual cell voltages in 3S Li-ion battery packs for portable power tools. IC Role / Device Role / Timing Role: Dual comparator input buffer with extended Vicm enabling direct measurement of cells referenced to pack ground. Use Value: Accepts inputs from 0 V to 4.5 V per cell while operating from 3.3 V supply, eliminating level-shifters and reducing component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-I/SN | Higher supply current (1 mA/channel), lower GBW (10 MHz), wider supply range (2.7–6 V). | Requires ≥2.7 V supply; unsuitable for 1.8 V systems like coin-cell IoT nodes. | Select when higher speed (>100 kHz closed-loop) and better PSRR (75 dB) are prioritized over ultra-low power. |
| TLV2462IDR | Lower input offset (2 mV max), higher quiescent current (550 µA/channel), same 1.8–6 V range. | Higher noise (32 nV/√Hz) and lower output drive (40 mA) limit headphone or low-Z load use. | Prefer when tighter DC accuracy is required and output loading remains <1 kΩ. |
Compared with MCP6022-I/SN and TLV2462IDR, TS1872AIDT uniquely balances 1.8 V operation, sub-1 mA total supply current, and 65 mA drive - making it optimal for space-constrained, battery-sensitive dual-channel analog front-ends where voltage headroom and efficiency are limiting factors.
Availability
TS1872AIDT is available at Aetrix Electronics and suitable for battery-powered audio interfaces, portable sensor signal conditioning, laptop touchpad controller interfaces, and industrial battery monitor front-ends requiring stable component supply across automotive-grade and commercial temperature ranges.
Supply support for TS1872AIDT 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 microcontrollers, analog ICs, power management devices, and MEMS sensors for industrial, automotive, and consumer markets.
The TS187x series was developed specifically for ultra-low-voltage, low-power analog signal conditioning in portable and energy-harvesting applications - emphasizing rail-to-rail performance, extended input range, and robustness in battery-constrained environments.
FAQ
What is the maximum capacitive load the TS1872AIDT can drive while remaining stable?
The TS1872AIDT maintains unity-gain stability with up to 100 pF capacitive load, as confirmed by phase margin measurements ≥53° across 1.8–5 V supplies. For loads >100 pF, a series resistor (≥100 Ω) between output and capacitance is recommended to preserve stability without degrading bandwidth below 100 kHz.
Does TS1872AIDT support true single-supply operation with input signals at ground potential?
Yes - its common-mode input range extends to VCC− − 0.2 V, allowing inputs at 0 V (ground) when VCC− = 0 V. This enables direct interfacing with ground-referenced sensors or DAC outputs without level-shifting, provided the output load permits rail-to-rail swing.
How does the output voltage swing vary with load resistance?
At VCC = 3.3 V and TA = 25 °C, the output swings to within 100 mV of each rail into 600 Ω, and to within 30 mV into 2 kΩ. Under 600 Ω load, VOL is 46 mV (max) and VOH is 3.20 V (min), ensuring >3 Vpp signal swing for audio and sensor applications.
Is TS1872AIDT qualified for automotive applications?
No - TS1872AIDT is rated for −40 °C to +125 °C operation but is not AEC-Q100 qualified. For automotive use, ST offers the pin-compatible TS1872AIYDT (SO-8) and TS1872AIYPT (TSSOP8), which undergo full AEC-Q100 stress testing and advanced screening per AEC-Q001/Q002.
TS1872AIDT 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:
- 2
- 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:
- 1 mV
- Current - Supply:
- 500µA (x2 Channels)
- 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
TS1872AIDT FAQ
1.How can I place an order for TS1872AIDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1872AIDT 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 TS1872AIDT reliable?
The price and inventory of TS1872AIDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1872AIDT is usually 5 days.
3.What payment methods are accepted for TS1872AIDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1872AIDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1872AIDT?
TS1872AIDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1872AIDT 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 TS1872AIDT?
For technical support, including TS1872AIDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1872AIDT requirements.
6.How does Aetrix verify that TS1872AIDT is sourced from the original manufacturer or authorized distributors?
All TS1872AIDT 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 TS1872AIDT meets industry standards.
7.What is the process for return or replacement of TS1872AIDT?
All TS1872AIDT units undergo pre-shipment inspection (PSI). If there is an issue with TS1872AIDT, 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 TS1872AIDT part is unused and in its original packaging.
Return procedure for TS1872AIDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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