max97220a Maxim Integrated Products, Inc., max97220a Datasheet
max97220a
Manufacturer Part Number
max97220a
Description
Differential Input Directdrive Line Drivers/headphone Amplifiers
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX97220A.pdf
(19 pages)
Available stocks
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Part Number:
max97220aETE
Manufacturer:
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Quantity:
20 000
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Part Number:
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19-5611; Rev 0; 1/11
The MAX97220_ is a differential input DirectDrive
driver/headphone amplifier. This device is capable of
driving line level loads with 3V
supply and 2V
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 (t
applications feature a t
versions, intended for set-top-box applications, feature a
130ms t
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.
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.
Simple Multimedia Interfaces
Set-Top Boxes
Blu-rayK and DVD Players
LCD Televisions
Prosumer Audio Devices
ON
. An on-chip charge pump inverts the power-
ON
RMS
). The A and C versions for headphone
_______________________________________________________________ Maxim Integrated Products 1
into 600I loads from a 3.3V supply. A
AUDIO
INPUT
AUDIO
RIGHT
INPUT
General Description
ON
LEFT
R
R
R
R
IN
IN
IN
IN
of 5.5ms while the B and D
R
R
F
F
RMS
INL+
INR+
INL-
INR-
Line Drivers/Headphone Amplifiers
MAX97220A/B
Applications
into 1kI with a 5V
R
R
F
F
OUTL
OUTR
Differential Input DirectDrive
®
line
AUDIO
INPUT
AUDIO
S Output Power 125mW into 32I with a 5V Supply
S 3V
S 2V
S Fully Differential Inputs
S Fixed or Externally Adjustable Gain with No
S Wide 2.5V to 5.5V Operating Range
S DirectDrive Outputs Eliminate DC-Blocking
S Flat THD+N, Better Than 90dB in the Audio Band
S 18-Bit SNR Performance, 112dB
S Footprint Compatible with the MAX9722
RIGHT
INPUT
Note: All devices operate over the -40NC to +85NC temperature
range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Functional Diagrams appear at end of data sheet.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Blu-ray is a trademark of the Blu-ray Disc Association.
LEFT
MAX97220AETE+
MAX97220BETE+
MAX97220CETE+
MAX97220DETE+
Clicks or Pops
Capacitors
INR+
INL+
INR-
INL-
RMS
RMS
R
R
R
R
PART
IN
IN
IN
IN
R
R
F
F
Output Drive into 1kI with a 5V Supply
Output Drive into 600I with a 3.3V Supply
MAX97220C/D
Simplified Block Diagrams
R
R
F
F
OUTL
OUTR
PIN-
PACKAGE
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
SGND
Ordering Information
SGND
GAIN SET
External
External
+6dB
+6dB
Features
TIME (ms)
TURN-ON
130
130
5.5
5.5
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