MAX98400A datasheet(6/26 Pages) MAXIM

Part #	MAX98400A

Description	Stereo, High-Power, Class D Amplifiers

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Manufacturer	MAXIM [Maxim Integrated Products]

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Stereo, High-Power, Class D Amplifiers

6

Note 2: 100% production tested at TA = +25NC. Specifications over temperature limits are guaranteed by design.

Note 3: The MAX98400A stereo mode is specified with an 8I resistive load in series with a 68FH inductive load connected across

BTL outputs. The MAX98400A mono mode is specified with a 4I resistive load in series with 33FH inductive load. The

MAX98400B is specified with an 8I resistive load in series with a 68FH inductive load connected across BTL outputs.

Note 4: Amplifier inputs AC-coupled to GND.

Note 5: Mode transitions controlled by SHDN.

Note 6: Relative to equivalent full-scale undistorted output. Full scale (FS) = VPVDD x 0.95.

Note 7: Relative to equivalent full-scale undistorted output. Full scale (FS) = VPVDD.

ELECTRICAL ChARACTERISTICS (continued)

(VPVDD = 18V, CIN = 1FF, VSHDN = 5V, LIM_TH = VS, TEMPLOCK = unconnected; G1 = GND, G2 = open (gain = 20.1dB), CREL

= 1FF, C1 = C2 = 1FF, RL = J, AC measurement bandwidth 20Hz to 20kHz, differential input signal, TA = TMIN to TMAX, unless

otherwise noted. Typical values are at TA = +25NC.) (Notes 2, 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VGA Distortion

Compression = 0 to -12dB

3.5

%

LIM_TH Input-Voltage Low

(PVDD Tracking)

0.15

V

LIM_TH Input-Voltage High

(Limiter Off)

VS

- 1

V

Channel-to-Channel Attenuation

Tracking

Q

1

dB

ThERMAL FOLDBACK

Internal Templock Resistor

120

205

310

kI

Trigger Temperature

+130

N

C

Hard Thermal Protection

+165

N

C

LOGIC INPUT (G1, G2)

Sink Current

TA = +25NC, VG1, VG2 = 0V

+2.5

+5

+8

F

A

Source Current

TA = +25NC, VG1, VG2 = VS

-8

-5

-2.5

F

A

Input High Threshold

0.8 x

VS

V

Input Low Threshold

0.3 x

VS

V

Input Three-State Window

0.45 x

VS

0.5 x

VS

0.55 x

VS

V

LOGIC INPUT (SHDN, MONO (MAX98400A Only))

Input Leakage Current

IIN

TA = +25NC

Q

10

F

A

Input High Threshold

VINH

2

V

Input Low Threshold

VINL

0.4

V

Input-Voltage Hysteresis

100

mV

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