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Headphone Amplifiers



Maxim's proprietary DirectDrive headphone amplifiers save cost and space of DC-blocking capacitors, produce industry leading click-and-pop performance, and produce an output signal with twice the amplitude of conventional amplifiers.

DATA SHEETS
Part Number Description Key Advantages
MAX97200AEVKIT Evaluation Kit for the MAX97200A and MAX97200B

MAX9820EVKIT Evaluation Kit for the MAX9820

MAX97200 Low-Power, Low-Offset, Dual Mode, Class H DirectDrive Headphone Amplifier

Small, High-Efficiency Headphone Amplifier Delivers Outstanding Performance with Low Battery Consumption
MAX9820 DirectDrive Headphone Amplifier with External Gain

95mW Stereo Headphone Amplifier with Clickless Operation
MAX9724C, MAX9724D Low RF Susceptibility DirectDrive Stereo Headphone Amplifier with 1.8V Compatible Shutdown

Lower Supply (Operates Down to 2.5V), RF-Immune Headphone Amplifier
MAX9729 Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux

DirectDrive Headphone Amplifier with Integrated 3:1 Input Stereo Multiplexer, I²C Interface, and Industry-Leading Click-and-Pop Suppression
MAX9723 Stereo DirectDrive® Headphone Amplifier with BassMax, Volume Control, and I²C

MAX9724A, MAX9724B 60mW, DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown

MAX9725 1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown

MAX9721 1V, Fixed-Gain, DirectDrive®, Stereo Headphone Amplifier with Shutdown

1V, Fixed-Gain, DirectDrive, Stereo-Headphone Amplifier with Shutdown Ideal for Portable Equipment where Board Space Is at a Premium
MAX9722 5V, Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown

Next-Generation DirectDrive Headphone Amplifiers Offer Differential Inputs and 5V Operation
MAX4409 80mW, DirectDrive, Stereo Headphone Amplifier with Common-Mode Sense

80mW, DirectDrive, Stereo Headphone Amplifier with Common-Mode Sense
MAX9720, MAX9720A, MAX9720B 50mW, DirectDrive®, Stereo Headphone Amplifier with SmartSense™ and Shutdown

50mW, DirectDrive, Stereo-Headphone Amplifier with SmartSense and Shutdown
MAX4411, MAX4411B 80mW, Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown

No DC blocking caps
MAX4410 80mW, DirectDrive Stereo Headphone Driver with Shutdown

No DC blocking caps
MAX4335, MAX4336, MAX4337,
...
SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute

MAX4165, MAX4166, MAX4167,
...
High-Output-Drive, Precision, Low-Power, Single-Supply, Rail-to-Rail I/O Op Amps with Shutdown




Key Specifications:

Headphone Amplifiers
Part Number Hdph. Amp. VCC
(V)
Hdph. Amp. VCC
(V)
Hdph. Amp. ICC
(mA)
Hdph. Amp. POUT into 32Ω
(mW)
Hdph. Amp. Half Pwr. THD+N
(%)
SNR
(dB)
PSRR
(dB)
Hdph. Amp. Ext. Gain Hdph. Amp. Fxd. Gain
(|V/V|)
Hdph. Amp. Fxd. Gain
(|V/V|)
Features RoHS Available Industry Qualified Package/Pins Smallest Available Pckg.
(mm2)
min max typ @ 1% THD+N A- Weighted min min max max w/pins
MAX97200  1.62 1.98 1.15 34 0.003 105 94 No 1 1.41 Class H Yes -
WLP/12
-
MAX9820  2.7 5.5 3 95 0.005 - 105 Yes - - - Yes -
TDFN-EP/10
9.6
MAX9729  1.8 3.6 4.8 52 0.035 101 90 No 1.5 20
3:1 Stereo Input Mux
Dedicated Beep Input
I2C/SMBus Compatible Interface
Integrated Volume Control
Software Enabled Bass Boost (BassMax)
Yes Automotive - General
TQFN/28
26
MAX9723  1.8 3.6 4 59 0.007 100 90 No 0.5 2
I2C/SMBus Compatible Interface
Integrated Volume Control
Software Enabled Bass Boost (BassMax)
See Data Sheet -
See Data Sheet
-
MAX9725  0.9 1.8 2.1 25 0.02 92 80 No 2 4 - Yes -
TQFN/12
UCSP/12
3.3
MAX9721  0.9 1.8 2.2 20 0.008 92 70 No 1 2 - See Data Sheet -
See Data Sheet
-
MAX9722  2.4 5.5 5.5 130 0.015 103 90 Yes 2 2 Common-Mode Sense Yes
Automotive - AECQ100
Automotive - General
TQFN/16
TSSOP/16
33.4
MAX9720  1.8 3.6 5 50 0.006 100 92 No 1 1.41 SmartSense Automatic Short Circuit Detection Yes -
TSSOP/16
UCSP/16
33.4
MAX4409  1.8 3.6 5 65 0.005 98 86 Yes - - Common-Mode Sense Yes -
TQFN/20
16.8
MAX4411  1.8 3.6 5 65 0.007 98 86 No 1.5 2 Independent Shutdown Controls Yes -
TQFN/20
UCSP/14
4.3
MAX4410  1.8 3.6 7 65 0.006 98 90 Yes - - Independent Shutdown Controls Yes -
TSSOP/14
UCSP/14
4.3
See All Headphone Amplifiers (18)

Operational Amplifiers
Part Number Amps. Rail to Rail AVCL VSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Amp.
(µA)
ICC per Amp.
(µA)
VOS
(µV)
CMRR @DC
(dB)
PSRR @DC
(dB)
Input IBIAS
(nA)
Unity Gain BW
(MHz)
Slew Rate
(V/µs)
en
(nV/√Hz)
in
(pA/√Hz)
Low Pwr. Shutdn Package/Pins
min min max typ max max typ typ max typ typ
MAX4165  1 Input/Output 1 2.7 6.5 1300 1500 850 93 88 150 5 2 26 0.4 No
SOT/5
MAX4166  1 Yes
µDFN/8
µMAX/8
PDIP(N)/8
SOIC(N)/8
MAX4167  2 Yes
PDIP(N)/8
SOIC(N)/8
MAX4168  2 Yes
µMAX/10
PDIP(N)/14
SOIC(N)/14
See All Operational Amplifiers (160)





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