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Maxim > Solutions > MP3 and Portable Media Players
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.
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| Display |
Title / Parts |
Key Advantages |
| QV PDF |
Low RF Susceptibility DirectDrive Stereo Headphone Amplifier with 1.8V Compatible Shutdown
MAX9724C, MAX9724D
| Lower Supply (Operates Down to 2.5V), RF-Immune Headphone Amplifier |
| QV PDF |
Evaluation Kit for the MAX9725A, MAX9725B, MAX9725C, MAX9725D, and MAX9725E
MAX9725EEVKIT
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| QV PDF |
Evaluation Kit for the MAX9724A and MAX9724B
MAX9724AEVKIT
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| QV PDF |
Evaluation Kit/Evaluation System for the MAX9723A, MAX9723B, MAX9723C, and MAX9723D
MAX9723DEVCMOD2, MAX9723DEVCMODU, MAX9723DEVKIT
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| QV PDF |
Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux
MAX9729
| Patented DirectDrive Headphone Amplifier with Integrated 3:1 Input Stereo Multiplexer, I²C Interface, and Industry-Leading Click-and-Pop Suppression |
| QV PDF |
DirectDrive, Headphone Amplifier with BassMax, I²C, Volume and Gain Control
MAX9726
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| QV PDF |
Stereo DirectDrive® Headphone Amplifier with BassMax, Volume Control, and I²C
MAX9723
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| QV PDF |
60mW, DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown
MAX9724, MAX9724A, MAX9724B
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| QV PDF |
1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown
MAX9725
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| QV PDF |
1V, Fixed-Gain, DirectDrive®, Stereo Headphone Amplifier with Shutdown
MAX9721
| 1V, Fixed-Gain, DirectDrive, Stereo-Headphone Amplifier with Shutdown Ideal for Portable Equipment where Board Space Is at a Premium |
| QV PDF |
5V, Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown
MAX9722
| Next-Generation DirectDrive Headphone Amplifiers Offer Differential Inputs and 5V Operation |
| QV PDF |
80mW, DirectDrive, Stereo Headphone Amplifier with Common-Mode Sense
MAX4409
| 80mW, DirectDrive, Stereo Headphone Amplifier with Common-Mode Sense |
| QV PDF |
50mW, DirectDrive®, Stereo Headphone Amplifier with SmartSense™ and Shutdown
MAX9720, MAX9720A, MAX9720B
| 50mW, DirectDrive, Stereo-Headphone Amplifier with SmartSense and Shutdown |
| QV PDF |
80mW, Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown
MAX4411, MAX4411B
| No DC blocking caps |
| QV PDF |
80mW, DirectDrive Stereo Headphone Driver with Shutdown
MAX4410
| No DC blocking caps |
| QV PDF |
Dual, Rail-to-Rail, High-Output-Drive Op Amp in UCSP
MAX4369
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| QV PDF |
SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute
MAX4335, MAX4336, MAX4337, MAX4338
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| QV PDF |
High-Output-Drive, Precision, Low-Power, Single-Supply, Rail-to-Rail I/O Op Amps with Shutdown
MAX4165, MAX4166, MAX4167, MAX4168, MAX4169
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| Key Specifications:
Headphone Amplifiers |
| Part Number |
Headphone Amp. VCC (min) (V) |
Headphone Amp. VCC (max) (V) |
Headphone Amp. ICC (typ) (mA) |
Headph. Amp. POUT into 32Ω @1% THD+N (W) |
Headphone Amp. Half Pwr. THD+N (%) |
SNR, A-weighted (dB) |
PSRR (db) |
Headphone Amp. External Gain |
Headphone Amp. Fixed Gain (min) (|V/V|) |
Headphone Amp. Fixed Gain (max) (|V/V|) |
Features |
Industry Qualified |
Package |
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MAX9724
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2.7
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5.5
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3.5
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63
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0.02
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101
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86
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Yes
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1.5
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1.5
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-
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-
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THIN QFN/12
UCSP/0
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MAX9721
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0.9
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1.8
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2.2
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20
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0.008
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92
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70
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No
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1
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2
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-
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-
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See Data Sheet
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MAX9722
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2.4
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5.5
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5.5
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130
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0.015
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103
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90
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Yes
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2
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2
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Automotive - General
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THIN QFN/16
TSSOP/16
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MAX9720
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1.8
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3.6
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5
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50
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0.006
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100
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92
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No
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1
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1.41
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| • | SmartSense Automatic Short Circuit Detection |
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-
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UCSP/0
UCSP/16
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MAX4409
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1.8
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3.6
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5
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65
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0.005
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98
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86
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Yes
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-
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-
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-
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THIN QFN/20
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MAX4411
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1.8
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3.6
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5
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65
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0.007
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98
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86
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No
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1.5
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2
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| • | Independent Shutdown Controls |
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-
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THIN QFN/20
UCSP/0
UCSP/14
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MAX4410
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1.8
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3.6
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7
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65
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0.006
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98
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90
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Yes
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-
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-
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| • | Independent Shutdown Controls |
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-
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TSSOP/14
UCSP/0
UCSP/14
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MAX9723
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1.8
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3.6
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4
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59
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0.007
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100
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90
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No
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0.5
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2
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| • | I2C/SMBus Compatible Interface |
| • | Integrated Volume Control |
| • | Software Enabled Bass Boost (BassMax) |
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-
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UCSP/0
UCSP/16
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MAX9725
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0.9
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1.8
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2.1
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25
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0.02
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92
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80
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No
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2
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4
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-
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-
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THIN QFN/12
UCSP/0
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MAX9729
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1.8
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3.6
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4.8
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52
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0.035
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101
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90
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No
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1.5
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20
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| • | I2C/SMBus Compatible Interface |
| • | Integrated Volume Control |
| • | Software Enabled Bass Boost (BassMax) |
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Automotive - General
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THIN QFN/28
THIN QFN/32
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| See All Headphone Amplifiers (11) |
| Key Specifications:
Operational Amplifiers |
| Part Number |
Amps Per Pkg. |
Rail to Rail |
Min. Stable Closed Loop Gain (V/V) |
Min. Total Supply (V) |
Max. Total Supply (V) |
Typ. Supply Current per Amp. (µA) |
Max. Supply Current per Amp. (µA) |
Max. VOS (µV) |
Typ. CMRR @ DC (dB) |
Typ PSRR @ DC (dB) |
Max. Input IBIAS (nA) |
Typ. Unity Gain BW (MHz) |
Typ. Slew Rate (V/µs) |
Input Voltage Noise Density (nV/√Hz) |
Input Current Noise Density (pA/√Hz) |
Low Power Shutdown |
Package |
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MAX4165
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1
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Input and Output
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1
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2.7
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6.5
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1300
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1500
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850
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93
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88
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150
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5
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2
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26
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0.4
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No
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SOT-23/5
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MAX4166
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1
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Input and Output
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1
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2.7
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6.5
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1300
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1500
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850
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93
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88
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150
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5
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2
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26
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0.4
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Yes
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MicroDFN/8
PDIP/8
SOIC/8
uMAX/8
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MAX4167
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2
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Input and Output
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1
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2.7
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6.5
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1300
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1500
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850
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93
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88
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150
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5
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2
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26
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0.4
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Yes
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PDIP/8
SOIC/8
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MAX4168
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2
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Input and Output
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1
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2.7
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6.5
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1300
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1500
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850
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93
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88
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150
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5
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2
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26
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0.4
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Yes
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PDIP/14
SOIC/14
uMAX/10
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MAX4169
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4
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Input and Output
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1
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2.7
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6.5
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1300
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1500
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1,000
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93
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88
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150
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5
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2
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26
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0.4
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No
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PDIP/14
SOIC/14
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| See All Operational Amplifiers (137) |
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