Texas Instruments LM48560TLEVAL

Overview

LM48560TLEVAL from Texas Instruments is an evaluation module designed to demonstrate the LM48560 high-voltage Class H ceramic speaker driver IC in hardware and software control modes. It supports 2.7–5.5 V supply, delivers up to 30 V_p-p differential output, operates from –40°C to +85°C, and enables configurable gain (0 dB to 21 dB), input selection (IN1/IN2), and boost control for piezo actuator and ceramic speaker applications.

For engineers reviewing the LM48560TLEVAL datasheet, LM48560TLEVAL pinout, LM48560TLEVAL application, or LM48560TLEVAL equivalent, this board provides validated I²C and hardware-mode configuration paths, real-world Class H efficiency measurement capability, and direct access to all critical signal nodes (IN1±, IN2±, OUT±, SHDN, SCL/SDA) for rapid audio driver validation.

Technical Context

The LM48560TLEVAL implements the full functional interface of the LM48560TL IC, including dual fully-differential inputs, programmable gain via I²C register writes or hardware jumpers, and selectable boost operation. It exposes all control pins (SHDN, SCL/GAIN, SDA/SEL, SW/HW) through 0.100" headers for flexible mode configuration.

Board-level design incorporates a 4.7 µH power inductor (L1), 0.22 µF bootstrap capacitor (C4), 10 µF input bulk capacitor (C1), and four 0.47 µF input coupling capacitors - matching TI's recommended layout for stable high-voltage Class H operation with ceramic loads.

Key Specifications

Availability

LM48560TLEVAL is available at Aetrix Electronics and suitable for audio driver evaluation, piezoelectric actuator prototyping, and ceramic speaker system validation requiring stable component supply and TI-validated reference design fidelity.

Supply support for LM48560TLEVAL 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 delivering analog and embedded processing solutions, with leadership in precision analog, power management, and high-performance signal chain products.

The LM48560 product line targets high-efficiency audio actuation in space-constrained systems - specifically engineered for driving ceramic speakers and piezo actuators in portable medical devices, ultrasonic cleaners, haptic feedback modules, and industrial sensing platforms.

FAQ

What is the primary function of the LM48560TLEVAL?

The LM48560TLEVAL is a Texas Instruments evaluation module built around the LM48560TL IC. Its purpose is to enable rapid functional verification and performance characterization of the LM48560's Class H ceramic speaker driver capabilities - including differential input switching, programmable gain, boost control, and low-quiescent-current operation - using either hardware jumpers or I²C software commands. The LM48560TLEVAL itself is not a production component but a development tool for validating the LM48560TL in real circuits.

Does the LM48560TLEVAL include the LM48560TL IC?

Yes, the LM48560TLEVAL board is fully populated with one LM48560TL/NOPB IC (U1), as confirmed in Table 3 (Bill of Materials) of the SNAU196 user's guide. This device is soldered in a 20-pin TSSOP package and serves as the core amplifier on the evaluation board. All board features - including IN1±/IN2± inputs, OUT± outputs, and control header functionality - are routed directly to the LM48560TL's pins.

How do I configure the LM48560TLEVAL for hardware vs. software mode?

Hardware mode is set by shorting pins 2–3 (GND) on JU7; software mode requires shorting pins 1–2 (VDD) on JU7. In hardware mode, gain and input selection are controlled via JU2 and JU3 jumpers; in software mode, those same pins become SCL and SDA, and configuration is performed via I²C register writes using the SNAC051 GUI tool. Both modes are fully supported on the LM48560TLEVAL and documented in Sections 2.1 and 2.2 of SNAU196.

What power supply requirements does the LM48560TLEVAL have?

The LM48560TLEVAL requires a DC supply between 2.7 V and 5.5 V applied to the VDD header, with a ground reference connected to the GND header. This matches the operating range of the underlying LM48560TL IC. The board draws ~4 mA quiescent current during active operation and <0.1 µA in shutdown - verified using the JU1 jumper (pins 2–3 shorted to GND). No external regulators or sequencing circuitry is needed.

Can the LM48560TLEVAL drive standard dynamic speakers?

No - the LM48560TLEVAL is optimized for high-impedance, capacitive loads like ceramic speakers and piezo actuators, not low-impedance dynamic (voice-coil) speakers. Its 30 V_p-p differential output and Class H architecture deliver high voltage swing with minimal current, making it unsuitable for 4 Ω or 8 Ω loads. Driving dynamic speakers would require external amplification stages and is outside the intended use case defined in the LM48560 datasheet and SNAU196 user's guide for the LM48560TLEVAL.