Monolithic Power Systems Inc. EV1720DQ-00B

Overview

EV1720DQ-00B from Monolithic Power Systems is an evaluation board for the MP1720DQ-216 mono Class-D audio amplifier IC, configured in BTL topology to deliver 2.7 W into a 4 Ω load at 5 V supply with ≤10% THD+N, operating from 2.5–5.5 V, and achieving up to 90% efficiency with low EMI compliance (FCC radiated emissions passed without output filter).

For engineers reviewing the EV1720DQ-00B datasheet, EV1720DQ-00B pinout, EV1720DQ-00B application, or EV1720DQ-00B equivalent, this board supports rapid validation of MP1720-series amplifiers-including MP1720DQ-0, -3, -6, -9, and -12-via IC replacement, flexible clock mode selection (1.0/1.3 MHz or external), and configurable single-ended/differential input.

Technical Context

The EV1720DQ-00B implements a full-bridge (BTL) Class-D output stage driven by the MP1720DQ-216 IC in QFN10 package, supporting 2.5–5.5 V single-supply operation and delivering 2.7 W into 4 Ω at 10% THD+N. It integrates configurable switching frequency modes via JP3 jumper (GND/FLOAT/Clocked) spanning 0.5–1.4 MHz.

Audio input configuration is selectable via JP1 (SE or differential), and shutdown control is implemented through JP2 (ON/OFF) or /SHDN pin logic. The board includes test-optimized LC filtering components (15 µH inductors, 33 nF/68 nF/0.15 µF capacitors) for FCC-compliant radiated emission testing per Figure 6.

Key Specifications

Availability

EV1720DQ-00B is available at Aetrix Electronics and suitable for cellular phones, PDAs, MP3 players, and portable audio systems requiring stable component supply and fast functional validation of Class-D amplifier performance.

Supply support for EV1720DQ-00B 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC/DC conversion, LED drivers, and audio power solutions.

The MP1720 product line delivers low-EMI, high-efficiency mono Class-D amplifiers targeting battery-powered portable audio applications where thermal management, PCB area, and regulatory compliance are critical.

FAQ

What amplifier IC is pre-installed on the EV1720DQ-00B?

The board ships with the MP1720DQ-216 IC in QFN10 package, a mono BTL Class-D amplifier optimized for 2.7 W output into 4 Ω at 5 V with 21.6 dB fixed gain and low-noise (53 µV typical) operation.

Can the EV1720DQ-00B evaluate other MP1720 variants?

Yes - the board supports direct replacement of the MP1720DQ-216 with MP1720DQ-0, -3, -6, -9, or -12 to evaluate different gain settings (0 dB to 21.6 dB) and internal configurations while retaining identical pinout and layout compatibility.

How is switching frequency selected on this evaluation board?

Frequency is set via JP3: connect to GND for 1.0 MHz, FLOAT for 1.3 MHz, or Clocked position to accept an external TTL clock signal (0.5–1.4 MHz), enabling precise EMI spectrum placement during system-level compliance testing.

Is an output filter required for FCC radiated emissions testing?

Yes - the board includes optional LC filter components (L1/L2 = 15 µH, C7/C8 = 33 nF, C9 = 0.15 µF, C10/C11 = 68 nF) specifically for FCC testing; these are not needed for normal operation but are mandatory when measuring radiated emissions per the documented test setup.

What input interface options does the EV1720DQ-00B support?

JP1 selects between single-ended (jumper installed) and differential (jumper removed) input modes, allowing evaluation against both consumer-grade line-level sources and noise-immune differential audio paths without hardware modification.

How is shutdown controlled on the EV1720DQ-00B?

Shutdown is managed via JP2: set to ON for always-active operation, OFF for disabled output, or left open to enable external TTL-level control of the /SHDN pin - supporting integration into host-controlled power sequencing architectures.