MAX9727 datasheet(3/13 Pages) MAXIM

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Quad Audio Line Driver with 3VRMS Output

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Note 1: All devices are 100% tested at TA = +25°C. Specifications over temperature are guaranteed by design.

Note 2: Inputs AC-coupled to PGND.

Note 3: Click-and-pop testing performed with a 1kΩ resistive load connected to ground. Mode transitions are controlled by SHDN.

KCP level is calculated as 20log[(peak voltage during mode transition, no input signal)/1VRMS]. Units are expressed in dBV.

ELECTRICAL CHARACTERISTICS

(VDD = PVDD = 3.3V, PGND = 0V, SHDN = VDD, VCM = 0V, C1 = C2 = 1µF, RIN = RF = 5kΩ, RL = ∞, TA = TMIN to TMAX. Typical val-

ues are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VOUT = 1.6VRMS, BW = 22Hz to 22kHz,

f = 1kHz, unweighted, RL = 10k

Ω

0.0005

VOUT = 2VRMS, BW = 22Hz to 22kHz,

f = 1kHz, unweighted, RL = 10k

Ω

0.0006

Total Harmonic Distortion Plus

Noise

THD+N

VOUT = 1.6VRMS, BW = 22Hz to 22kHz,

f = 1kHz, unweighted, RL = 1k

Ω

0.003

22Hz to 22kHz

109

VOUT = 1.6VRMS,

RL = 1k

Ω

A-weighted

113.6

22Hz to 22kHz

111

Signal-to-Noise Ratio

SNR

VOUT = 2VRMS,

RL = 1k

Ω

A-weighted

115.5

Into shutdown

-62.2

Click-and-Pop Level

KCP

Peak voltage,

A-weighted, 32

samples/s (Notes 2, 3)

Out of shutdown

-54.3

dBV

Slew Rate

RL = 1k

Ω, CL = 100pF

0.9

V/µs

Turn-On Time

tON

µs

Turn-Off Time

tOFF

1µs

Capacitive Drive

No sustained oscillations

220

Crosstalk

f = 10kHz

-70

Large-Signal Open-Loop Gain

AVOL

VOUT = 2VRMS

Small-Signal Open-Loop Gain

AVOS

VOUT = 100mVRMS

Gain Bandwidth

GBW

MHz

Charge-Pump Switching

Frequency

fOSC

150

300

450

kHz

Charge-Pump Output Impedance

Measured at PVSS

Ω

ESD Protection

ESD

HBM

±8

DIGITAL INPUTS (

SHDN)

Input-Voltage High

VIH

2.0

Input-Voltage Low

VIL

0.8

Input Leakage Current

ILEAK

±1

µA

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