MAX9724A(2007) 查看數據表（PDF） - Maxim Integrated

零件编号

产品描述 (功能)

生产厂家

MAX9724A
(Rev.:2007)

60mW, DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown

Maxim Integrated 

60mW, DirectDrive, Stereo Headphone Amplifier

with Low RF Susceptibility and Shutdown

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V, PGND = SGND, SHDN = 5V, C1 = C2 = 1µF, RL = ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V

(RIN = 20kΩ, RF = 30kΩ); for MAX9724B gain = -1.5V/V (internally set), TA = -40°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C, unless otherwise noted.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Signal-to-Noise Ratio

Slew Rate

SNR

SR

RL = 1kΩ,

VOUT = 2VRMS

RL = 32Ω,

POUT = 50mW

BW = 22Hz to 22kHz

A-weighted

BW = 22Hz to 22kHz

A-weighted

102

105

98

dB

101

0.5

V/µs

Capacitive Drive

Crosstalk

CL

No sustained oscillations

L to R, R to L, f = 10kHz, RL = 16Ω,

POUT = 15mW

100

pF

-70

dB

Charge-Pump Oscillator

Frequency

fOSC

190 270 400

kHz

Click-and-Pop Level

RL = 32Ω, peak voltage,

Into shutdown

-67

KCP A-weighted, 32 samples per Out of

second (Notes 4, 7)

shutdown

dB

-64

DIGITAL INPUTS (SHDN)

Input-Voltage High

Input-Voltage Low

Input-Voltage High

Input-Voltage Low

Input Leakage Current

VINH

VINL

VINH

VINL

(TQFN only)

(TQFN only)

(UCSP only)

(UCSP only)

2

V

0.8

V

1.4

V

0.9

V

±1

µA

ELECTRICAL CHARACTERISTICS

(VDD = 3V, PGND = SGND, SHDN = 3V, C1 = C2 = 1µF, RL = ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V

(RIN = 20kΩ, RF = 30kΩ); for MAX9724B gain = -1.5V/V (internally set), TA = -40°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C, unless otherwise noted.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Quiescent Current

Shutdown Current

Power-Supply Rejection Ratio

(Note 4)

Output Power

Total Harmonic Distortion Plus

Noise (Note 6)

ICC

ISHDN

PSRR

POUT

THD+N

SHDN = SGND = PGND

f = 1kHz, 100mVP-P

f = 20kHz, 100mVP-P

RL = 32Ω, THD+N = 1%

RL = 16Ω, THD+N = 1%

RL = 1kΩ, VOUT = 2VRMS, fIN = 1kHz

RL = 32Ω, POUT = 15mW, fIN = 1kHz

RL = 16Ω, POUT = 10mW, fIN = 1kHz

3.0

mA

0.1

µA

80

dB

65

20

mW

14

0.05

0.03

%

0.06

Note 3: All specifications are 100% tested at TA = +25°C; temperature limits are guaranteed by design.

Note 4: The amplifier inputs are AC-coupled to GND.

Note 5: Gain for the MAX9724A is adjustable.

Note 6: Measurement bandwidth is 22Hz to 22kHz.

Note 7: Test performed with a 32Ω resistive load connected to GND. Mode transitions are controlled by SHDN. KCP level is calculat-

ed as 20log[(peak voltage during mode transition, no input signal)/(peak voltage under normal operation at rated power

level)]. Units are expressed in dB.

_______________________________________________________________________________________ 3

Share Link: