STMicroelectronics TS616IDWT

Overview

TS616IDWT from STMicroelectronics is a dual current-feedback operational amplifier optimized for high-current, wide-bandwidth line driving in xDSL and video systems. It delivers 420 mA output current per channel, 420 V/µs slew rate, 40 MHz −3 dB bandwidth at 12 dB gain into 25 Ω, 20.7 V_p-p differential swing on 50 Ω with ±6 V supply, and 2.5 nV/√Hz input voltage noise.

For engineers reviewing the TS616IDWT datasheet, TS616IDWT pinout, TS616IDWT application, or TS616IDWT equivalent, this device is selected for high-fidelity differential signaling where low distortion (−87 dBc HD2), high output drive capability, thermal robustness (exposed-pad SO-8), and stable performance across ±2.5 V to ±6 V supplies are critical.

Technical Context

The TS616 employs a current-feedback architecture enabling high slew rate and wide bandwidth independent of closed-loop gain-critical for maintaining signal integrity in multi-carrier xDSL line drivers. Its symmetrical ±6 V operation supports rail-to-rail output swing into low-impedance loads (10–50 Ω), while the exposed thermal pad ensures junction temperature remains below 150 °C under sustained 420 mA sourcing/sinking.

Designed for differential configuration, it achieves −88 dBc IM3 and −98 dBc HD3 at 110 kHz with 6 V_p-p output into 20 Ω, confirming suitability for broadband communication channels requiring minimal intermodulation artifacts. Input impedance asymmetry (82 kΩ non-inverting, 54 Ω inverting) reflects its current-feedback topology and mandates careful PCB layout for stability.

Key Specifications

Pinout & Package

DW SO-8 Exposed-pad plastic micropackage: 8-pin surface-mount with thermally enhanced underside copper pad connected to −V_CC for optimal heat transfer and EMI suppression.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-output-current, wide-bandwidth op-amp applications.

Compared with THS3091D and LMH6723MA, the TS616IDWT uniquely combines dual-channel operation, 420 mA drive, 420 V/µs slew rate, and exposed-pad thermal management-making it irreplaceable for space-constrained, high-power xDSL line card designs requiring guaranteed 40 MHz bandwidth into 25 Ω.

Availability

TS616IDWT is available at Aetrix Electronics and suitable for xDSL line cards, broadcast video distribution systems, and high-speed DAC output buffering requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for TS616IDWT 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 specializing in analog, power, and microcontroller solutions for industrial, automotive, and communications markets.

The TS616 belongs to ST's high-performance line driver op-amp product line, engineered specifically for broadband access infrastructure demanding high output current, low distortion, and thermal resilience in compact packages.

FAQ

What power supply configurations does the TS616IDWT support?

The TS616IDWT operates from symmetric dual supplies: ±2.5 V, ±6 V, or +12 V single supply with appropriate biasing. Absolute maximum ratings specify ±7 V supply, and electrical characteristics are guaranteed across ±2.5 V to ±6 V. The device draws 13.5–17 mA per amplifier at ±6 V with no load, and thermal design must account for up to 2 W total dissipation under full output current.

How is the exposed thermal pad connected on the TS616IDWT?

The exposed pad (Pin 5) is electrically and thermally connected to Pin 4 (−V_CC). It must be soldered to a dedicated PCB copper area tied to the −V_CC net-not to ground-and sized ≥200 mm² with ≥4 thermal vias (0.3 mm diameter) to an inner ground plane. This configuration achieves R_thJA ≈ 60 °C/W and prevents junction temperatures exceeding 150 °C during 420 mA continuous output.

Can the TS616IDWT drive a 50 Ω differential load directly?

Yes-the TS616IDWT delivers 20.7 V_p-p differential output swing into a 50 Ω load with ±6 V supplies, as confirmed in the datasheet (Section 1, "Features"). This is achieved in fully differential configuration using both amplifiers with matched feedback networks, enabling direct interface to hybrid transformers or baluns without external current-boosting transistors.

What layout practices ensure stability with the TS616IDWT?

Stability requires minimizing inductance at the inverting input (Pin 2/6): place feedback resistors within 2 mm of the pin, use 0402 or smaller components, and avoid vias in the feedback path. Power supply bypassing needs 100 nF ceramic + 10 µF tantalum capacitors placed ≤5 mm from Pins 4 and 8. Input traces must be length-matched between non-inverting (Pins 1/7) and inverting (Pins 2/6) inputs to maintain >80 dB channel separation up to 10 MHz.