STMicroelectronics TS1872IYDT

Overview

TS1872IYDT from STMicroelectronics is a dual, 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, consumes 400 µA per channel, and supports rail-to-rail output swing within 100 mV of each rail into 600 Ω - ideal for headphone driver stages in portable audio systems.

For engineers reviewing the TS1872IYDT datasheet, TS1872IYDT pinout, TS1872IYDT application, or TS1872IYDT equivalent, key selection criteria include its extended common-mode range (V_CC− − 0.2 V to V_CC+ + 0.2 V), automotive-grade qualification (AEC-Q100), SO-8 package with enhanced ESD tolerance (2 kV HBM), and guaranteed performance across −40 °C to +125 °C.

Technical Context

The TS1872IYDT implements a CMOS input stage enabling rail-to-rail input common-mode voltage operation beyond the supply rails by ±200 mV at 25 °C, while maintaining high CMRR (min. 55 dB) and PSRR (min. 70 dB). Its unity-gain-stable architecture supports capacitive loads up to 100 pF without oscillation, verified by ≥53° phase margin.

Each amplifier provides 65 mA typical output drive capability, enabling direct interface with 600 Ω headphone loads and low-impedance sensors. The device features latch-up immunity and 2 kV HBM ESD protection, meeting automotive reliability requirements without external protection circuitry.

Key Specifications

Pinout & Package

TS1872IYDT is housed in an SO-8 package (ECOPACK® compliant, RoHS-compliant, Pb-free), with 1.27 mm pitch, 4.90 mm × 6.00 mm body size, and thermal resistance R_thJA = 125 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.

Compared with MCP6022-E/SN and LMV358QDRQ1, TS1872IYDT uniquely combines 1.8 V operation, extended Vicm, AEC-Q100 qualification, and 1.6 MHz bandwidth in SO-8 - making it optimal for space-constrained, low-voltage automotive and portable designs requiring precision and reliability.

Availability

TS1872IYDT is available at Aetrix Electronics and suitable for automotive infotainment systems, portable medical sensors, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS1872IYDT 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, power ICs, analog components, and MEMS sensors for industrial, automotive, and consumer markets.

The TS187x family was developed specifically for ultra-low-voltage, low-power analog signal conditioning in portable and automotive electronics - emphasizing rail-to-rail operation, extended common-mode range, and robustness under real-world supply and temperature variations.

FAQ

Is TS1872IYDT pin-compatible with standard SO-8 dual op-amps like LM358?

No. TS1872IYDT follows the industry-standard SO-8 dual op-amp pinout: Pin 1 (In−, Amp1), Pin 2 (In+, Amp1), Pin 3 (Out, Amp1), Pin 4 (V_CC−), Pin 5 (V_CC+), Pin 6 (In+, Amp2), Pin 7 (In−, Amp2), Pin 8 (Out, Amp2). This matches LM358, TL072, and MCP6022 - enabling drop-in replacement in most layouts if supply and performance requirements align.

What is the maximum capacitive load the TS1872IYDT can drive while remaining stable?

TS1872IYDT maintains ≥53° phase margin and unity-gain stability with up to 100 pF capacitive load, as verified in Figure 33 of the datasheet. For loads >100 pF, a series resistor (≥10 Ω) between output and capacitance is recommended to preserve stability without degrading bandwidth significantly.

Does TS1872IYDT support true single-supply operation with input signals extending to ground?

Yes. Its rail-to-rail input stage accepts common-mode voltages from V_CC− − 0.2 V to V_CC+ + 0.2 V. With V_CC− = 0 V (ground), inputs operate from −0.2 V to V_CC+ + 0.2 V - enabling direct interface with ground-referenced sensors and 0 V–V_CC DAC outputs without level shifters.

How does the automotive qualification (AEC-Q100) impact TS1872IYDT's reliability in industrial applications?

AEC-Q100 Grade 2 qualification (−40 °C to +105 °C ambient) subjects TS1872IYDT to accelerated stress testing including HTOL, TC, and ESD - resulting in demonstrated FIT rate <100 and zero infant mortality. This translates to superior long-term reliability in industrial environments, even outside automotive temperature extremes.