stereo enhancement processor. This device
鈩?/div>
technology to produce a
spatially widened stereo image from
ordinary left and right channel inputs.
This audio enhancement is achieved while
using normal stereo signals and standard
stereo audio equipment. No special initial
encoding of the input signals is required, no
additional speakers are required, and no
special hardware is needed to produce
QXpanded audio.
The 2011 has a TTL-compatible bypass
control to select between QXpander
enhancement and normal stereo audio. An
analog 鈥渟pread鈥?control is provided to vary
the amount of QXpander enhancement. The
QX2011 is fabricated in bipolar technology,
and is offered in plastic 22 pin SDIP and 24
pin SSOP packages.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Produce a wide sound image from
normal stereo input.
No encoding of input signals, no special
equipment required to QXpand audio.
TTL-compatible
enhancement/bypass
control.
user adjustable enhancement level.
Preliminary
Date: 97.03.26
鈥?/div>
鈥?/div>
鈥?/div>
Low noise: 60 uV
RMS
.
single supply voltage, internal reference.
Few external components, low cost.
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Television sound systems (Stereo).
Semi-professional audio equipment.
Personal/portable audio.
Multimedia applications for PCs and
laptops.
Multimedia speaker systems.
Video Games.
Pin Assignment
RIN
VREF
FB1
FB2
FB3
FB4
FB5
FB6
FB7
FB8
GND
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
VCC
LIN
BYP
FA1
FA2
FA3
FA4
FA5
FA6
LOUT
ROUT
Figure 1: SDIP-22 Pin Assignment
RIN
VREF
FB1
FB2
FB3
FB4
FB5
FB6
FB7
NC1
FB8
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VCC
LIN
BYP
FA1
FA2
FA3
FA4
FA5
FA6
NC2
LOUT
ROUT
Figure 2: SSOP-24 Pin Assignment
Ref: 2011V011.DOC
Revision: 0.11
Page 1 of 6
Note: The device data in these specifications are based on engineering samples, and are preliminary. QX2011 specifications are
subject to change without notice.
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