STMicroelectronics TS2012EIJT

Overview

TS2012EIJT from STMicroelectronics is a filter-free, fully-differential stereo Class D audio power amplifier in Flip Chip 16-bump package, delivering up to 1.15 W per channel into 8 Ω at 5 V with ≤1% THD+N, 63 dB PSRR at 217 Hz, and 7.8 ms fast startup. It serves as the final-stage audio driver in space-constrained portable devices requiring high efficiency and low EMI.

For engineers reviewing the TS2012EIJT datasheet, TS2012EIJT pinout, TS2012EIJT application, or TS2012EIJT equivalent, key selection criteria include differential input compatibility, four-step programmable gain (6–24 dB), independent channel standby control, thermal shutdown protection, and flip-chip package suitability for ultra-thin mobile PCB layouts.

Technical Context

The TS2012EIJT employs a fully-differential bridge-tied load (BTL) architecture with PWM-based modulation operating at 190–370 kHz base frequency. Its dual-channel design supports independent left/right channel enable via active-low STDBYL/STDBYR pins, enabling dynamic power gating per audio path.

Gain is digitally configured using two logic inputs (G0/G1), selecting 6/12/18/24 dB steps without external resistors. Input common-mode voltage range shifts with gain setting-requiring decoupling capacitors at 24 dB-and the device maintains stable operation across 2.5–5.5 V supply while rejecting supply ripple via 65 dB typical PSRR.

Key Specifications

Pinout & Package

TS2012EIJT uses a lead-free Flip Chip 16-bump package (0.5 mm pitch, 2.1 × 2.1 mm body), optimized for minimal board area and thermal resistance (90 °C/W on 4-layer PCB).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo Class D audio amplifier applications.

Compared with MAX97220AETE+T and TAS5342AIDBTR, the TS2012EIJT uniquely balances ultra-compact flip-chip packaging, filter-free operation, and sub-1 µA per-channel standby-making it optimal for height-sensitive, battery-constrained portable designs where full-system integration outweighs raw power output.

Availability

TS2012EIJT is available at Aetrix Electronics and suitable for smartphone audio subsystems, tablet media playback circuits, PDA voice prompt modules, and wearable communication devices requiring stable component supply across extended production lifecycles.

Supply support for TS2012EIJT 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, specializing in analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The TS2012EIJT belongs to ST's Class D audio amplifier product line, engineered specifically for space- and power-constrained portable electronics that demand high-fidelity audio without external filtering or complex layout constraints.

FAQ

Does TS2012EIJT require an external LC output filter?

No. The TS2012EIJT is explicitly designed as a filter-free Class D amplifier. Its modulation scheme and output stage characteristics allow direct connection to 4 Ω or 8 Ω speakers without external LC components in most portable applications, as confirmed in the "Filter-free Flip Chip stereo" product description and Figure 1 typical application schematic.

What is the minimum supply voltage for full functionality?

The TS2012EIJT operates down to 2.5 V, delivering 0.3 W per channel into 8 Ω at 1% THD+N. At this voltage, startup time is 7.8 ms typ., PSRR remains 65 dB, and standby current stays below 2 µA-enabling reliable operation across the full specified −40 °C to +85 °C temperature range.

How does gain selection affect input impedance?

Input impedance scales inversely with gain: at 6 dB gain, single-ended Z_in is 30 kΩ; at 24 dB, it drops to 7.5 kΩ (Table 6–8). This must be accounted for when interfacing with codecs or DACs with limited drive capability-higher gains require lower source impedance to avoid signal attenuation.

Can STDBYL and STDBYR be tied together?

Yes. While designed for independent control, STDBYL and STDBYR may be connected to a shared active-low enable signal. Doing so synchronizes left/right channel shutdown, reducing system-level control complexity-but forfeits per-channel power gating capability described in Section 4.6 of the datasheet.