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MAX9727 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX9727
Description  Quad Audio Line Driver with 3VRMS Output
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX9727 Datasheet(HTML) 1 Page - Maxim Integrated Products

   
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General Description
The MAX9727 quad audio line driver with 3VRMS output is
ideal for portable audio devices where board space and
cost is at a premium. The device uses Maxim’s
DirectDriveTM architecture that produces a ground-refer-
enced output from a single supply, eliminating the need
for large DC-blocking capacitors, saving cost, board
space, and component height. A high 100dB PSRR and
low 0.0005% THD+N ensures clean, low-distortion ampli-
fication of the audio signal. Each MAX9727 amplifier can
provide 3VRMS to a 1kΩ load with less than 0.003%
THD+N while operating from a single +5V supply. Each
MAX9727 amplifier can provide 2VRMS to a 1kΩ load with
less than 0.003% THD+N while operating from a single
+3.3V supply.
A shutdown input disables the amplifiers and reduces
quiescent current consumption to less than 100nA. The
MAX9727 features Maxim’s comprehensive click-and-
pop suppression circuitry that reduces audible clicks and
pops during startup and shutdown.
The MAX9727 operates from a single 2.7V to 5.5V sup-
ply, consumes only 3mA of supply current per channel
and is specified over the -40°C to +85°C extended tem-
perature range.
Features
♦ 2.7V to 5.5V Single-Supply Operation
♦ High 100dB PSRR
♦ 109dB Signal-to-Noise Ratio (SNR)
♦ Ground-Referenced Outputs
♦ No Audible Clicks or Pops at Power-Up/Down
♦ Differential Inputs
♦ 3VRMS into 1kΩ Load at 5V
♦ 2VRMS into 1kΩ Load at 3.3V
♦ 3mA Supply Current Per Channel
♦ Unity-Gain Stable
♦ 100nA Low-Power Shutdown Mode
♦ CLOAD Drive > 220pF
♦ ±8kV HBM ESD-Protected Outputs
Quad Audio Line Driver with 3VRMS Output
________________________________________________________________ Maxim Integrated Products
1
MAX9727
OUTA
INA-
INA+
INB+
INB-
OUTB
OUTD
IND-
IND+
INC+
INC-
OUTC
PVSS
PGND
C1N
SHDN
ON
OFF
PVDD
C1P
PART
TEMP RANGE
PIN-
PACKAGE
GAIN
MAX9727EEP+
-40°C to +85°C
20 QSOP
Adjustable
Pin Configuration
Ordering Information
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
OUTA
OUTD
IND-
IND+
VSS
INC+
INC-
OUTC
PVSS
TOP VIEW
MAX9727
QSOP
INA-
INA+
INB-
VDD
INB+
OUTB
SHDN
12
11
9
10
C1N
PGND
PVDD
C1P
Simplified Block Diagram
XX-XXXX; Rev 0; 10/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Set-Top Boxes
Consumer and
Professional Audio
Equipment
A/V Receivers
CD and DVD Players
Soundcards
Portable Audio
Devices
Applications
+Denotes lead-free package.


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