MAX4409 datasheet(2/19 Pages) MAXIM

2 / 19 page

80mW, DirectDrive, Stereo Headphone

Amplifier with Common-Mode Sense

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(PVDD = SVDD = 3V, PGND = SGND = 0V, SHDN = SVDD, C1 = C2 = 2.2µF, RIN = RF = R1 = R2 = 10kΩ, RL = ∞, TA = TMIN to TMAX,

unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

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.

PGND to SGND .....................................................-0.3V to +0.3V

PVDD to SVDD .................................................................-0.3V to +0.3V

PVSS to SVSS .........................................................-0.3V to +0.3V

PVDD and SVDD to PGND or SGND .........................-0.3V to +4V

PVSS and SVSS to PGND or SGND ..........................-4V to +0.3V

IN_ and COM to SGND.................................SVSS to (SVDD - 1V)

IN_ to COM .....................................(COM + 2V) to (COM - 0.3V)

SHDN_ to SGND........................(SGND - 0.3V) to (SVDD + 0.3V)

OUT_ to SGND ............................(SVSS - 0.3V) to (SVDD + 0.3V)

C1P to PGND.............................(PGND - 0.3V) to (PVDD + 0.3V)

C1N to PGND .............................(PVSS - 0.3V) to (PGND + 0.3V)

Output Short Circuit to GND or VDD...........................Continuous

Continuous Power Dissipation (TA = +70°C)

14-Pin TSSOP (derate 9.1mW/°C above +70°C) ..........727mW

20-Pin Thin QFN (derate 16.9mW/°C above +70°C) ..1349mW

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range

VDD

Guaranteed by PSRR test

1.8

3.6

Quiescent Supply Current

IDD

8.4

Shutdown Supply Current

ISHDN

SHDN = GND

µA

VIH

0.7 x

SVDD

SHDN Thresholds

VIL

0.3 x

SVDD

SHDN Input Leakage Current

-1

µA

SHDN to Full Operation

tSON

175

µs

CHARGE PUMP

Oscillator Frequency

fOSC

272

320

368

kHz

AMPLIFIERS

Input Offset Voltage

VOS

RL = 32Ω

0.5

2.4

Input Bias Current

IBIAS

-700

-100

0nA

COM Bias Current

ICOM

-1400

-200

0nA

Equivalent Input Offset Current

IOS

IOS = (IBIAS(INR) + IBIAS(INL) - ICOM) / 2

±2

COM Input Range

VCOM

Inferred from CMRR test

-500

+500

Common-Mode Rejection Ratio

CMRR

-500mV ≤ VCOM ≤ +500mV, RSOURCE ≤ 10Ω

1.8V ≤ VDD ≤ 3.6V

DC (Note 2)

fRIPPLE = 1kHz

Power-Supply Rejection Ratio

PSRR

VDD = 3.0V,

200mVP-P ripple

fRIPPLE = 20kHz

RL = 32Ω

Output Power

POUT

THD+N = 1%, TA = +25°C

RL = 16Ω

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