Datasheet > MAX9736A

MAX9736A

更新时间： 2022-06-24 15:43:27

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
10页	249K
描述
Shutdown and Mute Control

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数据手册

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MAX9736A 数据手册

MAX9736A Evaluation Kit

Internal Regulator Enable (REGEN)

The MAX9736A provides an option to disable the internal

regulator when an optional external power supply is con-

nected to the VS and AGND pads on the EV kit to power

the MAX9736A preamplifiers. Jumper JU3 controls the

internal regulator enable (REGEN) pin on the MAX9736A

IC (see Table 4 for shunt positions). See the Optional

External Preamplifier Power Supply (VS) section.

Mono Mode (MONO)

The MAX9736A EV kit is preconfigured to stereo mode

from the factory. To change the MAX9736A EV kit to

operate in mono mode, short jumper JU6 with a short-

ing wire, connect the FOUTL- to the FOUTR- with a

short banana-lead cable, connect the FOUTL+ to the

FOUTR+ with a short banana-lead cable. Connect the

audio input source to the LIN RCA jack. In mono mode,

the right input (RIN) becomes an uncommitted inverting

op amp that can be used for filtering. Jumper JU6 con-

trols the mono mode for the MAX9736A IC (see Table 7

for shunt positions).

Mute Function (MUTE)

The MAX9736A features a mute function to mute the

audio output of the EV kit. Jumper JU4 controls the

mute (MUTE) pin of the MAX9736A IC (see Table 5 for

shunt positions).

Evaluating the MAX9736B

The MAX9736A EV kit can also evaluate the

MAX9736B. Remove the MAX9736A IC (U1) and

replace it with the MAX9736B IC. The MAX9736B IC is

pin compatible with the MAX9736A IC. The MAX9736B

Class D amplifier can drive 2 x 6W into a pair of 8Ω

speakers in stereo mode, or 1 x 12W into a 4Ω speaker

in mono mode. Refer to the MAX9736A/MAX9736B IC

data sheet for additional information.

Modulation Scheme (MOD)

The MAX9736A EV kit provides an option to select the

modulation scheme for the MAX9736A output. Jumper

JU5 controls the modulation-scheme pin (MOD) of the

MAX9736A IC (see Table 6 for shunt positions).

Table 4. JU3 Jumper Selection (REGEN)

Table 5. JU4 Jumper Selection (MUTE)

SHUNT

POSITION

REGEN PIN

CONNECTED TO

EV KIT INTERNAL

REGULATOR

SHUNT

POSITION

MUTE PIN

CONNECTED TO

AUDIO OUTPUT

Normal operation

Muted

Installed*

DVDD

Enabled

Installed*

DVDD

Not

installed

PGND

(through resistor R15)

Not

installed

PGND

(through resistor R16)

Disabled

*Default position.

Evluates:/MAX9736B

Table 6. JU5 Jumper Selection (MOD)

SHUNT POSITION

Installed*

MOD PIN CONNECTED TO

DVDD

PGND (through resistor R17)

OUTPUT MODULATION SCHEME

Filterless modulation

Not installed

Classic pulse-width modulation (PWM)

*Default position.

Table 7. JU6 Jumper Selection (MONO)

MONO PIN CONNECTED

SHUNT POSITION

OUTPUT SPEAKER MODE

AUDIO INPUT SOURCE CONNECTED TO

PGND

(through resistor R18)

Not installed*

Stereo mode

Mono mode

LIN and RIN

LIN

Install a shorting wire

*Default position.

DVDD

(RIN is an uncommitted inverting op amp)

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