max9727eept Maxim Integrated Products, Inc., max9727eept Datasheet
max9727eept
Manufacturer Part Number
max9727eept
Description
Max9727 Quad Audio Line Driver With 3vrms Output
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX9727EEPT.pdf
(13 pages)
The MAX9727 quad audio line driver with 3V
ideal for portable audio devices where board space and
cost is at a premium. The device uses Maxim’s
DirectDrive
enced output from a single supply, eliminating the need
for large DC-blocking capacitors and 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 3V
THD+N while operating from a single +5V supply. Each
MAX9727 amplifier can provide 2V
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.
19-3860; Rev 0; 12/05
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
TOP VIEW
TM
RMS
Quad Audio Line Driver with 3V
architecture that produces a ground-refer-
SHDN
OUTA
OUTB
PV
to a 1kΩ load with less than 0.003%
INA+
INB+
INA-
INB-
C1P
V
________________________________________________________________ Maxim Integrated Products
DD
DD
10
1
2
6
3
4
5
7
8
9
General Description
+
MAX9727
QSOP
Pin Configuration
RMS
CD and DVD Players
Soundcards
Portable Audio
Devices
Applications
19
18
17
16
15
14
13
12
11
20
to a 1kΩ load with
OUTD
IND-
IND+
V
INC+
INC-
OUTC
PV
C1N
PGND
SS
SS
RMS
output is
o 2.7V to 5.5V Single-Supply Operation
o High 100dB PSRR
o 109dB Signal-to-Noise Ratio (SNR)
o Ground-Referenced Outputs
o No Audible Clicks or Pops at Power-Up/Down
o Differential Inputs
o 3V
o 2V
o 3mA Supply Current Per Channel
o Unity-Gain Stable
o 100nA Low-Power Shutdown Mode
o C
o ±8kV HBM ESD-Protected Outputs
+ Denotes lead-free package.
MAX9727EEP+
OFF
LOAD
PART
RMS
RMS
ON
into 1kΩ Load at 5V
into 1kΩ Load at 3.3V
Drive > 220pF
OUTB
OUTA
INA-
INA+
INB+
INB-
SHDN
PV
C1P
DD
Simplified Block Diagram
-40°C to +85°C
TEMP RANGE
Ordering Information
MAX9727
RMS
PIN-
PACKAGE
20 QSOP
Output
Features
PGND
OUTD
OUTC
PV
IND+
INC+
IND-
INC-
C1N
Adjustable
SS
GAIN
1
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