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MAX97220E fiches techniques PDF

Maxim Integrated - Differential Input DirectDrive Line Drivers/Headphone Amplifiers

Numéro de référence MAX97220E
Description Differential Input DirectDrive Line Drivers/Headphone Amplifiers
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX97220E fiche technique
EVALUATION KIT AVAILABLE
MAX97220A–MAX97220E
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
General Description
The MAX97220_ is a differential input DirectDrive® line
driver/headphone amplifier. This device is capable of
driving line level loads with 3VRMS into 1kI with a 5V
supply and 2VRMS into 600I loads from a 3.3V supply. A
headphone load is capable of being driven with 125mW
into 32I with a 5V supply. The IC is offered with an inter-
nally fixed 6dB gain or an externally set gain through
external resistors. The external gain setting nodes can
also be used to configure filters for set-top box applica-
tions. The IC has exceptional THD+N over the full audio
bandwidth.
Two versions of the IC are available with different turn-
on times (tON). The A, C, and E versions for headphone
applications feature a tON of 5.5ms while the B and D
versions, intended for set-top-box applications, feature a
130ms tON. An on-chip charge pump inverts the power-
supply input, creating a negative rail. The output stage of
the amplifier is powered between the positive input sup-
ply and the output of the charge pump. The bipolar sup-
plies bias the output about ground, eliminating the need
for large, distortion-introducing output coupling capaci-
tors. The IC powers on and off without clicks or pops.
The IC is available in a 3mm x 3mm x 0.8mm, 16-pin
TQFN and is specified over the extended -40NC to +85NC
temperature range.
Applications
Simple Multimedia Interfaces
Set-Top Boxes
Blu-rayK and DVD Players
LCD Televisions
Prosumer Audio Devices
Features
S Output Power 125mW into 32I with a 5V Supply
S 3VRMS Output Drive into 1kI with a 5V Supply
S 2VRMS Output Drive into 600I with a 3.3V Supply
S Fully Differential Inputs
S Fixed or Externally Adjustable Gain with No
Clicks or Pops
S Wide 2.5V to 5.5V Operating Range
S DirectDrive Outputs Eliminate DC-Blocking
Capacitors
S Flat THD+N, Better Than 90dB in the Audio Band
S 18-Bit SNR Performance, 112dB
S Footprint Compatible with the MAX9722
Ordering Information
PART
PIN-
TOP GAIN TURN-ON
PACKAGE MARK SET TIME (ms)
MAX97220AETE+ 16 TQFN-EP* +AIF External 5.5
MAX97220BETE+ 16 TQFN-EP* +AIG External 130
MAX97220CETE+ 16 TQFN-EP* +AIH +6dB
5.5
MAX97220DETE+ 16 TQFN-EP* +AII +6dB
130
MAX97220EETE+ 16 TQFN-EP* +AII External 5.5
Note: All devices operate over the -40NC to +85NC temperature
range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Blu-ray is a trademark of the Blu-ray Disc Association.
Functional Diagrams appear at end of data sheet.
Simplified Block Diagrams
RF
RIN
LEFT
AUDIO
INPUT
RIN
INL-
INL+
OUTL
RF
RIN RF
RIGHT
AUDIO
INPUT RIN
MAX97220A/B/E
INR+
OUTR
INR-
RF
INL-
LEFT
AUDIO
INPUT INL+
RIN
RIN
RF
INR+
RIGHT
AUDIO
INPUT INR-
RIN RF
RIN
RF
OUTL
MAX97220C/D
SGND
SGND
OUTR
RF
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5611; Rev 2; 7/12

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MAX97220B Differential Input DirectDrive Line Drivers/Headphone Amplifiers Maxim Integrated Products
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MAX97220C Differential Input DirectDrive Line Drivers/Headphone Amplifiers Maxim Integrated Products
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MAX97220D Differential Input DirectDrive Line Drivers/Headphone Amplifiers Maxim Integrated Products
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