max9726aetpt Maxim Integrated Products, Inc., max9726aetpt Datasheet

no-image

max9726aetpt

Manufacturer Part Number
max9726aetpt
Description
Max9726 Directdrive, Headphone Amplifier With Bassmax, I?c, Volume And Gain Control
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX9726AETPT.pdf (24 pages)
The MAX9726 stereo, DirectDrive™, headphone amplifier
with BassMax and volume control is ideal for portable
audio applications where space is at a premium and per-
formance is essential. The MAX9726 operates from a sin-
gle 2.7V to 5.5V power supply and includes features that
reduce external component count, system cost, board
space, and offer improved audio reproduction. High
85dB PSRR makes the MAX9726 ideal for direct connec-
tion to a battery-powered supply and eliminates the need
for a dedicated LDO. The MAX9726 features Maxim’s
industry-leading click-and-pop suppression circuitry,
which reduces/eliminates audible transients during
power-up and power-down.
The headphone amplifier uses Maxim’s patented
DirectDrive architecture that produces a ground-refer-
enced output from a single supply, eliminating the need
for large DC-blocking capacitors. The headphone ampli-
fiers deliver 105mW into a 32Ω load and feature low
0.02% THD+N.
The BassMax feature boosts the bass response of the
amplifier, improving audio reproduction when using inex-
pensive headphones. The integrated volume control fea-
tures 64 discrete volume levels, eliminating the need for
an external potentiometer. External resistors set the
MAX9726’s overall gain allowing for custom gain settings.
BassMax and the volume control are enabled through the
I
trolled through the hardware or software interface.
The MAX9726 consumes only 5.5mA of supply current,
provides short-circuit and thermal-overload protection,
and is specified over the -40°C to +85°C extended tem-
perature range. The MAX9726 is available in a tiny
(2mm x 2.5mm x 0.62mm) 20-bump chip-scale pack-
age (UCSP™) and a 20-pin TQFN package (4mm x
4mm x 0.75mm).
19-0627; Rev 1; 3/08
Cell Phones
MP3/PMP Players
Flat-Panel TVs
†
SMBus is a trademark of Intel Corp.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
2
U.S. Patent # 7,061,327
C/SMBus
™
-compatible interface. Shutdown can be con-
________________________________________________________________ Maxim Integrated Products
BassMax, I
DirectDrive, Headphone Amplifier with
General Description
Automotive Rear-Seat
Entertainment (RSE)
Portable CD/DVD/MD
Players
Applications
2
C, Volume and Gain Control
†
o 105mW DirectDrive Headphone Amplifier
o 2.7V to 5.5V Single-Supply Operation
o Integrated 64-Level Volume Control
o High 85dB PSRR at 1kHz
o Software-Enabled Bass Boost (BassMax)
o Industry-Leading Click-and-Pop Suppression
o ±7.5kV HBM ESD-Protected Headphone Outputs
o Short-Circuit and Thermal-Overload Protection
o Low-Power Shutdown Mode (8µA)
o Low 0.02% THD+N
o I
o Available in Space-Saving, Thermally Efficient
Note: All devices specified over the -40°C to +85°C operating
range.
+ Denotes lead-free package.
* EP = Exposed pad.
T = Tape and reel.
Pin Configurations appear at end of data sheet.
MAX9726AEBP+T
MAX9726AETP+
MAX9726BEBP+T
MAX9726BETP+
Eliminates Bulky DC-Blocking Capacitors
Packages
2
C/SMBus-Compatible Interface
20-Bump UCSP (2mm x 2.5mm x 0.62mm)
20-Pin TQFN (4mm x 4mm x 0.75mm)
PART
Simplified Block Diagram
SCL
SDA
FBL
INL
INR
FBR
INTERFACE
I
2
2.7V TO 5.5V SUPPLY
C
Ordering Information
PIN-PACKAGE
20 UCSP-20
20 TQFN-EP*
20 UCSP-20
20 TQFN-EP*
CONTROL
VOLUME
MAX9726
Σ
Σ
OUTR
OUTL
BML
BMR
SLAVE ADDRESS
BassMax
BassMax
Features
1001100
1001100
1001101
1001101
1

Related parts for max9726aetpt

Image
Part Number
Description
Manufacturer
Datasheet
Request R
mxd1210
Part Number:
mxd1210
Description:
Nonvolatile Ram Controller Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MXD1210.pdf (8 pages)
ds2065w
Part Number:
ds2065w
Description:
3.3v Single-piece 8mb Nonvolatile Sram Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS2065W.pdf (12 pages)
ds1865
Part Number:
ds1865
Description:
Pon Triplexer Control And Monitoring Circuit Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS1865.pdf (66 pages)
dg300aa
Part Number:
dg300aa
Description:
Ttl Compatible Cmos Analog Switches Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DG300AA.pdf (10 pages)
dg421dy
Part Number:
dg421dy
Description:
Improved Low-power, Cmos Analog Switches With Latches Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DG421DY.pdf (12 pages)
max9789a
Part Number:
max9789a
Description:
Windows Vista-compliant, Stereo Class Ab Speaker Amplifiers And Directdrive Headphone Amplifiers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX9789A.pdf (26 pages)
max5054bata
Part Number:
max5054bata
Description:
4a, 20ns, Dual Mosfet Drivers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX5054BATA.pdf (17 pages)
max2003cse
Part Number:
max2003cse
Description:
Nicd/nimh Battery Fast-charge Controllers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2003CSE.pdf (20 pages)
max2235eup
Part Number:
max2235eup
Description:
3.6v, 1w Autoramping Power Amplifier For 900mhz Applications Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2235EUP.pdf (8 pages)
max2264eue
Part Number:
max2264eue
Description:
2.7v, Single-supply, Cellular-band Linear Power Amplifiers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2264EUE.pdf (16 pages)
max2841ebc-t
Part Number:
max2841ebc-t
Description:
5ghz Linear Power Amplifiers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2841EBC-T.pdf (9 pages)
MAX3514EVKIT
Part Number:
MAX3514EVKIT
Description:
Evaluation Kits for the MAX3514
Manufacturer:
Maxim Integrated Products, Inc.
max9722beue
Part Number:
max9722beue
Description:
5v, Differential Input, Directdrive, 130mw Stereo Headphone Amplifiers With Shutdown Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX9722BEUE.pdf (20 pages)
DS32C35
Part Number:
DS32C35
Description:
Accurate I2c Rtc With Integrated Tcxo/crystal/fram
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS32C35.pdf (22 pages)
ds1863
Part Number:
ds1863
Description:
Ds1863 Burst-mode Pon Controller With Integrated Monitoring
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS1863.pdf (61 pages)

max9726aetpt Summary of contents

Page 1

... Flat-Panel TVs Players † U.S. Patent # 7,061,327 SMBus is a trademark of Intel Corp. UCSP is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com Volume and Gain Control ...

Page 2

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control ABSOLUTE MAXIMUM RATINGS V to PGND............................................................-0. .........................................................-0.3V to +0. SGND to PGND .....................................................-0.3V to +0.3V C1P to PGND..............................................-0. ...

Page 3

DirectDrive, Headphone Amplifier with BassMax, I ELECTRICAL CHARACTERISTICS (5V Supply) (continued) = SHDN = 5V, PGND = SGND = 0V 1µ ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and ...

Page 4

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control ELECTRICAL CHARACTERISTICS (3.3V Supply) (continued) = SHDN = 3.3V, PGND = SGND = 0V 1µ volume (overall gain = 0dB), BassMax ...

Page 5

DirectDrive, Headphone Amplifier with BassMax SHDN = 5V, PGND = SGND = 0V 1µ ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and PGND where specified. Outputs in ...

Page 6

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control = SHDN = 5V, PGND = SGND = 0V 1µ ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ ...

Page 7

DirectDrive, Headphone Amplifier with BassMax SHDN = 5V, PGND = SGND = 0V 1µ ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and PGND where specified. Outputs in ...

Page 8

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control = SHDN = 5V, PGND = SGND = 0V 1µ ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ ...

Page 9

DirectDrive, Headphone Amplifier with BassMax, I PIN BUMP NAME TQFN UCSP Power-Supply Input. Bypass V DD Charge-Pump Flying Capacitor Positive Terminal. Connect a 1µF capacitor between C1P 2 A2 C1P and C1N PGND Power Ground. ...

Page 10

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control Detailed Description The MAX9726 stereo headphone amplifier features Maxim’s patented DirectDrive architecture, eliminating the large output-coupling capacitors required by con- ventional single-supply headphone amplifiers. The MAX9726 consists of ...

Page 11

DirectDrive, Headphone Amplifier with BassMax, I The MAX9726 features a low-noise charge pump. The 610kHz switching frequency is well beyond the audio range, and does not interfere with the audio signals. This enables the MAX9726 to achieve an SNR of ...

Page 12

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control The MAX9726 includes a 64-level volume control that adjusts the gain of the output amplifiers according to the code contained in the command register. Volume is programmed through ...

Page 13

DirectDrive, Headphone Amplifier with BassMax, I One data bit is transferred during each SCL cycle. The data on SDA must remain stable during the high period of the SCL pulse since changes in SDA while SCL is high are control ...

Page 14

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control COMMAND BYTE IS STORED RECEIPT OF STOP CONDITION ACKNOWLEDGE FROM MAX9726 COMMAND BYTE S SLAVE ADDRESS 0 A R/W START CONDITION ...

Page 15

DirectDrive, Headphone Amplifier with BassMax, I Table 5. MAX9726 Volume-Control Settings ...

Page 16

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control Table 5. MAX9726 Volume-Control Settings (continued ...

Page 17

DirectDrive, Headphone Amplifier with BassMax, I Table 6. Initial Power-Up Command Register Status MODE B7 Power-On Reset 1 The contents of the MAX9726’s command register at power-on are as shown in Table 6. Applications Information Power Dissipation and Heatsinking Linear ...

Page 18

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control Charge-Pump Hold Capacitor (C2) The hold capacitor’s value and ESR directly affect the ripple Ripple is reduced by increasing the SS value of the hold ...

Page 19

DirectDrive, Headphone Amplifier with BassMax, I The low-frequency boost attained by the BassMax cir- cuit is added to the gain realized by the maximum gain and volume settings. Select the BassMax gain so that the output signal remains within the ...

Page 20

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control Summing Amplifier (Audio Mixer) Figure 10 shows the MAX9726 configured as a sum- ming amplifier, which allows multiple audio sources to be linearly mixed together. Using this configuration, ...

Page 21

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control Functional Diagram/Typical Operating Circuit ______________________________________________________________________________________ 21 ...

Page 22

DirectDrive, Headphone Amplifier with 2 BassMax Volume and Gain Control 10kΩ 10kΩ μCONTROLLER 1μF 100kΩ 10kΩ FM RADIO 1μF 100kΩ 10kΩ 10kΩ 10kΩ μCONTROLLER 1μF ...

Page 23

DirectDrive, Headphone Amplifier with BassMax, I TOP VIEW OUTR 17 OUTL 18 MAX9726 BML PREG TQFN (4mm x 4mm) Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ 2 C, ...

Page 24

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — ...

Related keywords