MAX9746 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX9746

1.2W, Low-EMI, Filterless, Class D Audio Amplifier

Maxim Integrated 

1.2W, Low-EMI, Filterless,

Class D Audio Amplifier

tSW

VIN-

VIN+

OUT-

OUT+

tON(MIN)

VOUT+ - VOUT-

Figure 1. MAX9746 Outputs with an Input Signal Applied

Table 1. Operating Modes

SYNC INPUT

GND

FLOAT

VDD

Clocked

MODE

FFM with fS = 1100kHz

FFM with fS = 1450kHz

SSM with fS = 1220kHz ±120kHz

FFM with fS = external clock frequency

External Clock Mode

The SYNC input allows the MAX9746 to be synchro-

nized to a system clock (allowing a fully synchronous

system), or allocating the spectral components of the

switching harmonics to insensitive frequency bands.

Applying an external TTL clock of 800kHz to 2MHz to

SYNC synchronizes the switching frequency of the

MAX9746. The period of the SYNC clock can be ran-

domized, enabling the MAX9746 to be synchronized to

another MAX9746 operating in SSM mode.

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