Rainbow-electronics MAX9712 Bedienungsanleitung PDF herunterladen (Seite 2)

500mW, Low EMI, Filterless,

Class D Audio Amplifier

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= PV

= SHDN = 3.3V, GND = PGND = 0V, SYNC = GND (FFM), R

= 8Ω, R

connected between OUT+ and OUT-, T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.) (Notes 1, 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

to GND..............................................................................6V

to PGND .........................................................................6V

GND to PGND .......................................................-0.3V to +0.3V

All Other Pins to GND.................................-0.3V to (V

+ 0.3V)

Continuous Current Into/Out of PV

/PGND/OUT_........±600mA

Continuous Input Current (all other pins)..........................±20mA

Duration of OUT_ Short Circuit to GND or PV

........Continuous

Duration of Short Circuit Between OUT+ and OUT- ..Continuous

Continuous Power Dissipation (T

= +70°C)

10-Pin TDFN (derate 24.4mW/°C above +70°C) .....1951.2mW

10-Pin µMAX (derate 5.6mW/

C above +70°C) .........444.4mW

12-Bump UCSP (derate 6.1mW/°C above +70°C)........484mW

Junction Temperature......................................................+150°C

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Bump Temperature (soldering)

Reflow ..........................................................................+235°C

MAX9712

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

GENERAL

Supply Voltage Range V

Inferred from PSRR test 2.5 5.5 V

Quiescent Current I

4 5.2 mA

Shutdown Current I

SHDN

0.1 5 µA

Turn-On Time t

30 ms

Input Resistance R

= +25°C1420kΩ

Input Bias Voltage V

BIAS

Either input 0.73 0.83 0.93 V

Voltage Gain A

3.8 4 4.2 V/V

= +25°C ±11 40

Output Offset Voltage V

MIN

≤ T

MAX

±65

Common-Mode Rejection Ratio CMRR f

= 1kHz, input referred 72 dB

= 2.5V to 5.5V 50 70

RIPPLE

= 217Hz 72

Power-Supply Rejection Ratio

(Note 3)

PSRR

200mV

P-P

ripple

RIPPLE

= 20kHz 55

= 16Ω, V

= 5V 700

= 8Ω 450Output Power P

OUT

THD+N = 1%

= 6Ω 250

= 8Ω,

OUT

= 125mW

0.01

Total Harmonic Distortion Plus

Noise

THD+N

= 1kHz, either

FFM or SSM

= 6Ω,

OUT

= 125mW

0.01

FFM 88

BW = 22Hz

to 22kHz

SSM 86

FFM 91

Signal-to-Noise Ratio SNR V

OUT

= 1.8V

RMS

A-weighted

SSM 89

1 2 3 4 5 6 7 ... 17 18

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