MAX9718(2003) 查看數據表（PDF） - Maxim Integrated

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MAX9718
(Rev.:2003)

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers

Maxim Integrated 

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

ELECTRICAL CHARACTERISTICS—5V Supply (continued)

(VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A),

TA = +25°C. CBIAS = 0.1µF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

Gain Accuracy

SYMBOL

CONDITIONS

MAX971_B/MAX971_C/MAX971_D

MIN TYP MAX UNITS

±1

%

Channel-to-Channel Gain

Matching

MAX9719B/MAX9719C/MAX9719D

±1

%

Signal-to-Noise Ratio

Thermal-Shutdown Threshold

Thermal-Shutdown Hysteresis

Maximum Capacitive Drive

Power-Up/Enable from

Shutdown Time

SNR POUT = 1W, RL = 8Ω

CLOAD Bridge-tied capacitance

tPU

-104

dB

+160

°C

15

°C

500

pF

10

ms

Shutdown Time

Turn-Off Transient

Crosstalk

tSHDN

VPOP

(Note 6)

MAX9719, fIN = 1kHz

3.5

µs

50

mV

-85

dB

ELECTRICAL CHARACTERISTICS—3V Supply

(VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A),

TA = +25°C. CBIAS = 0.1µF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP MAX UNITS

Supply Current

Shutdown Supply Current

SHDN, SHDN, SHDM

Threshold

Common-Mode Bias Voltage

ICC

VIN- = VIN+ = VBIAS, TA = -40°C to +85°C,

per amplifier (Note 2)

3.8

6.0

mA

ISHDN SHDN = SHDM = SHDN = GND, per amplifier

0.1

1

µA

VIH

0.7 x VCC

V

VIL

0.3 x VCC

VBIAS (Note 3)

VCC/2

- 5%

VCC/2

VCC/2

+ 5%

V

Output Offset Voltage

AV = 0dB, MAX971_A/

MAX971_B

VOS

VIN- = VIN+ = VBIAS

AV = 3dB, MAX971_C

AV = 6dB, MAX971_D

Common-Mode Input Voltage

Inferred from

VIC CMRR test

AV = 0dB, MAX971_B

0.5

AV = 3dB, MAX971_C

0.5

AV = 6dB, MAX971_D

0.5

External gain, MAX971_A

0.5

Input Impedance

RIN MAX971_B/MAX971_C/MAX971_D

10

-50

Common-Mode Rejection Ratio CMRR

fN = 1kHz

±1

±10

mV

±1

±15

±1

±20

VCC - 0.7

VCC - 0.8

V

VCC - 1.0

VCC - 1.2

15

20

kΩ

-60

dB

-70

Power-Supply Rejection Ratio

PSRR

VIN- = VIN+ = VBIAS,

VRIPPLE = 200mVP-P,

RL = 8Ω,

CBIAS = 1µF

f = 217Hz

f = 1kHz

-93

dB

-90

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