Texas Instruments TS5A3166YZPR

Overview

TS5A3166 from Texas Instruments is a single-pole single-throw (SPST) analog switch optimized for low-distortion audio signal routing in portable systems. It delivers 0.9 Ω typical ON-state resistance at 5 V, supports 1.65–5.5 V single-supply operation, tolerates 5.5-V control inputs, and achieves 0.005% THD at 5 V - enabling clean microphone and headset switching in notebook docking stations.

For engineers reviewing the TS5A3166 datasheet, TS5A3166 pinout, TS5A3166 application, or TS5A3166 equivalent, key selection criteria include ON-resistance flatness (<0.15 Ω), charge injection (1 pC), OFF isolation (–64 dB at 1 MHz), and DSBGA-5 package compatibility with space-constrained PCB layouts.

Technical Context

The TS5A3166 implements a CMOS transmission-gate architecture with rail-to-rail analog signal handling (0 V to V+), bidirectional I/O capability, and logic-level tolerant digital control (VIH up to 5.5 V). Its low r_on flatness ensures minimal signal-dependent gain variation across the full input voltage range.

Functional mode is strictly binary: IN = high enables COM–NO conduction; IN = low disconnects both ports with sub-20 nA leakage at 25°C. No internal pull-ups, latches, or enable sequencing are required - operation is fully static and deterministic.

Key Specifications

Pinout & Package

TS5A3166YZPR uses a 5-pin DSBGA (Die Size Ball Grid Array) package measuring 1.388 mm × 0.888 mm with bottom-side solder balls. This ultra-compact footprint targets high-density portable PCBs where SOT-23 or SC-70 would occupy excessive area.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Compared with TMUX1574YFPR and TS3A5017RGTR, TS5A3166YZPR uniquely balances ultra-low r_on flatness, 5.5-V control tolerance, and minimal 1.388-mm × 0.888-mm DSBGA footprint - making it optimal for space-constrained, multi-rail portable audio systems requiring zero external level shifters.

Availability

TS5A3166YZPR is available at Aetrix Electronics and suitable for portable instrumentation, notebook docking interfaces, and USB audio accessories requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TS5A3166YZPR 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

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The TS5A3166 belongs to TI's precision analog switch portfolio, designed specifically for low-distortion, low-power signal routing in battery-operated audio and sensor interfaces where size, THD, and supply flexibility are critical.

FAQ

What is the maximum analog signal voltage range supported by the TS5A3166YZPR?

The TS5A3166YZPR supports analog signals from 0 V to V+, where V+ is the supply voltage. With a 1.65–5.5-V supply range, the analog signal range scales accordingly - e.g., 0–3.3 V at 3.3 V supply or 0–5.5 V at 5.5 V supply. This rail-to-rail capability ensures no clipping for full-scale audio or sensor signals within the supply bounds.

Does the TS5A3166YZPR require external pull-up or pull-down resistors on the IN pin?

No, the TS5A3166YZPR does not require external pull-up or pull-down resistors on the IN pin. Its digital input has CMOS-compatible thresholds (VIH ≥ 2.4 V @ 5 V, VIL ≤ 0.8 V) and negligible input leakage (<2 nA), allowing direct connection to microcontroller GPIOs without biasing components - simplifying layout and reducing BOM count.

Can the TS5A3166YZPR be used in bidirectional signal paths?

Yes, the TS5A3166YZPR supports fully bidirectional analog signal flow between NO and COM terminals. Its symmetric CMOS transmission-gate structure imposes no directionality - signals pass equally well from NO to COM or COM to NO, making it ideal for shared bus lines, differential pair routing, and reconfigurable sensor interfaces.

How does the ON-state resistance of the TS5A3166YZPR vary with supply voltage?

The TS5A3166YZPR's ON-state resistance increases as supply voltage decreases: 0.9 Ω typ @ 5 V, 1.4 Ω typ @ 3.3 V, 2.1 Ω typ @ 2.5 V, and 3.9 Ω typ @ 1.8 V. Designers must verify r_on impact on signal accuracy at the lowest intended V+ - especially in high-impedance sensor front-ends where voltage drop could affect measurement linearity.

Is thermal derating required for continuous 200-mA current through the TS5A3166YZPR?

Yes. While the TS5A3166YZPR specifies ±200 mA absolute maximum ON-state current, its R_θJA is 132°C/W in the YZP (DSBGA) package. At 200 mA and 0.9 Ω r_on, power dissipation reaches 36 mW, causing ~4.8°C junction rise above ambient. For sustained operation near limits, ensure PCB copper area and airflow prevent junction temperature from exceeding 150°C - particularly in sealed enclosures.