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 QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Overview: The QX-1 is an audio enhancement and control IC featuring QSound Labs' QXpander process. The patented QXpander technology produces a spatial or 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 and no additional speakers are required. Feature: * * * * * * *
Built in QXpander technology Stereo sound enhancement Electronic volume control 2 band tone control Bass (0 ~ +21dB/3dB step) Treble (0 ~ +9dB/3dB step) 5 input selector (The fifth input can be used as REC OUT or MIC MIX) DC 2.25 to 2.75 volt supply 24-pin SSOP packaging
Application: * Audio systems including TV, AV Amp, Mini System, VCR, DVD, VCD, SVCD and MP3 player * Computer-based multimedia products, including sound cards and powered loudspeakers System Block Diagram:
QXpander
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 1 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Packaging Dimension:
IC Block Diagram:
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 2 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Pin Description:
Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Name IN A1 IN B1 IN C1 IN D1 IN E1 QF1 QF2 TONEH1 TONEL1 OUT1 GND VDD CONT VSS OUT2 TONEL2 TONEH2 QF3 QF4 IN E2 IN D2 IN C2 IN B2 IN A2 I/O I I I I I I I I I O I O I I I I I I I I I Description
Channel 1 inputs*
Capacitor Capacitor Channel 1 treble control Channel 1 bass control Channel 1 output Ground Supply voltage (+) Control data input from a microcontroller Supply voltage (-) Channel 2 output Channel 2 bass control Channel 2 treble control Capacitor Capacitor
Channel 2 inputs*
*IN E switching can be controlled independently. Pin Assignment:
SSOP pin assignment
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 3 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Function Description: (1) Bass boost
Fo =
1 ( Hz ) 2 R1( R2 + R3)C1C 2
Q=
1 C1C 2 R2 C1 + C 2 R1
(C1=C2)
R2 + R3 +2 R1 Gv = 20 LOG (dB) R3 +2 R1
3dB 15.4 30.6 6dB 25.7 20.3 9dB 32.9 13.1 12dB 38.7 7.3 15dB 41.6 4.4 18dB 44.2 1.8 21dB 46 0
R2, R3 (typical)
Bass boost Resistor R2 (k) R3
(2) Treble boost
Fc =
1 ( Hz ) 2R2C1 R1 + {( R2 + Zc) / / R3} (dB) ( R2 + Zc) / / R3
Gv = 20 log Zc =
1 ( ) jC1
3dB 5.3 6dB 2.2 9dB 1.2
R2 (typical)
Treble boost R2 (k)
R1, R3 (typical)
Gain R1 (k) R3 (k0 14 dB 10.88 2.72 16 dB 13.65 2.57 18 dB 17.21 2.48 20dB 21.6 2.4
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 4 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Electrical Specification:
Absolute Maximum Ratings
Parameter Supply voltage Thermal derating Power dissipation Operating temperature Storage temperature range Soldering temperature Soldering time Symbol VDD-VSS K Pd TOPR TSTG TSLD tSLD Rating 6.0 5 500 -20 to 75 -40 to 125 255 10 (TA=25C unless otherwise noted) Unit V mW/C mW C C C Sec
Recommended Operating Condition
Parameter Supply voltage (+) Supply voltage (-) Control data input voltage Symbol VDD VSS CONT min. 2.25 -2.75 GND Limits typ. 2.5 -2.5 max. 2.75 -2.25 VDD Unit V V V
Electrical Characteristics
(VDD=2.5V, VSS=-2.5V, f=1kHz, Vi=100mV(rms), VOL=0dB, BASS=0dB, TREBLE=0dB, VOL/TREBLE SHARE AMP=18dB, MODE=BYPASS, RL=10k, TA=25C unless otherwise noted) Limits Parameter Symbol Condition min. typ. max. Circuit current of positive IDD Quiescent 30 45 power supply Circuit current of negative ISS Quiescent -30 -45 power supply Vol/Treble share amp gain = 18dB Voltage gain 16 18 20 Gv1 Bypass (selector) Vol/Treble shared amp gain = 18dB Voltage gain 25.5 27.5 29.5 Gv2 QXpander mode Vi=20mVrms (tone control) RL = 10k, THD = 1% Maximum output voltage VOMAX 1.2 1.6 BW = 400~30kHz Total harmonic distortion THD 0.02 0.08 JIS-A, Rg=5.1k, VOL = - 6 15 No1 Bypass Output noise voltage JIS-A, Rg=5.1k, VOL = - 11 30 No2 QXpander mode Output reference level (Vo = 1 Vrms), -95 -90 Maximum attenuation ATTMAX ATT = -, JIS-A 3dB 1.5 3 4.5 GB1 6dB 4.5 6 7.5 GB2 9dB 7.5 9 10.5 GB3 f=1kHz, 12dB 10.5 12 13.5 Bass Boost GB4 Vo=80mVrms 15dB 13.5 15 16.5 GB5 18dB 16.5 18 19.5 GB6 21dB 19.5 21 22.5 GB7 3dB 1.5 3 4.5 GT1 f=1kHz, 6dB 4.5 6 7.5 Treble Boost GT2 Vo=80mVrms 9dB 7.5 9 10.5 GT3
Unit mA mA dB dB Vrms % Vrms Vrms dB dB dB dB dB dB dB dB dB dB dB
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 5 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Control Signals Specification: (1)Wave form
(2) Control signal voltage Digital input signal L signal M signal H signal L M H Condition VDD = 2.5V, VSS = -2.5V VDD = 2.5V, VSS = -2.5V VDD = 2.5V, VSS = -2.5V min. GND 1.0 2.1 Limits typ. 1.25 (VDD/2) max. 0.4 1.5 VDD Unit V V V
(3) Control signal timing Symbol tcr tWH tWLC tr tf Parameter Cycle time Pulse width ("H" level) Pulse width ("L" level) Rise time Fall time min. 8 3.6 3.6 Limits typ. max. 0.4 0.4 Unit sec sec sec sec sec
(4) Control signal example (Refer to page 7 on the control data)
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 6 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Control Data Format (1) INPUT DATA
(MSB) D01 Input order D11 Bypass/ QXpander SW D21 D31 Vol/Treble share amp gain SW 0:20dB 1:18dB 2:16dB 3:14dB D22 D32 D41 D51 D61 D71 D81 D91 D101 D111 MUTE ON/OFF 0:OFF 1:ON (INPUT ALL OFF) D112 IN E ON/OFF 0:OFF 1:ON D121 D131 CHIP/SLOT SELECT 0:select 1:no select 2:no select 3:no select D122 CHIP/SLOT SELECT 0:no select 1:no select 2:no select 3: select D132
Slot1
0
INPUT 0:IN A 1:IN B 2:IN C 3:IN D
D2~D6: (a) Master volume condition
D02
D12
D42
D52
D62
D72
D82
D92
D102
Slot2
1
1
1
0
Mode select 0:stereo 1:mono 1 only 2:mono 2 only 3:mono 1+2
Bass(boost) 0: 0dB, 1: 3 dB, 2: 6dB, 3: 9dB, 4:12dB, 5:15dB, 6:18dB, 7:21dB
Treble(boost) 0:0dB, 1:3dB 2:6dB, 3:9dB
(a) Master volume ATT D61 -0.0dB 0 -2.0dB 1 -4.0dB 0 -6.0dB 1 -8.0dB 0 -10.0dB 1 -12.0dB 0 -14.0dB 1 -16.0dB 0 -18.0dB 1 -20.0dB 0 -22.0dB 1 -24.0dB 0 -26.0dB 1 -28.0dB 0 -30.0dB 1 -32.0dB 0 -34.0dB 1 -36.0dB 0 -40.0dB 1 -44.0dB 0 -48.0dB 1 -52.0dB 0 -56.0dB 1 -60.0dB 0 -64.0dB 1 -68.0dB 0 -72.0dB 1 -76.0dB 0 -80.0dB 1 -84.0dB 0 1 -
D71 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
D81 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
D91 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
D101 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Input select Input select IN A IN B IN E off IN C IN D IN A to D all off
D41 D51 D111 D112 0 0 1 0 0 0 0 1 1 1 X X 1 1 *1 A:0 0 IN E on B:1 0 IN A-D select 0 1 *2 C:0 1 D:1 1 *1) The IN E input impedance is about 5k *2) IN E can be controlled independently. It can be used as Rec output (c) Mode control Mode D42 stereo 0 mono1 only 1 mono2 only 0 mono1+2 1 (e) Bass control Bass D62 D72 0dB 0 0 3dB 1 0 6dB 0 1 9dB 1 1 12dB 0 0 15dB 1 0 18dB 0 1 21dB 1 1 (d) Treble control Treble D92 0dB 0 3dB 1 6dB 0 9dB 1 (f) Chip/Slot control Chip/Slot D12X select (slot1) 0 no select 1 no select 0 select (slot2) 1
D52 0 0 1 1
D102 0 0 1 1
D82 0 0 0 0 1 1 1 1
D13X 0 0 1 1
(g) Treble amp gain SW Gain SW D21 D31 20dB 0 0 18dB 1 0 16dB 0 1 14dB 1 1
(h) Bypass/QXpander SW Bypass/QXpander SW D11 Bypass 0 QXpander 1
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 7 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
(2) Notes on control data 1. 2. Power up noise is reduced if the micro controller initialization of the QMDV-1 is delayed for approximately 100mS. Allow time for system power to stabilize. The power up state is shown as below, when (VDD - VSS) 3.3V (TYP). Parameter Gain SW Input select Master volume MUTE Bypass/QXpander Mode select Bass Treble IN E Condition 18dB ALL OFF - ON (Input ALL OFF) Bypass stereo 0dB 0dB ON
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 8 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Application Example 1:
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 9 of 10
QX-1
QXpander Processor with Volume and Tone control Device Specifications - Preliminary Information
Application Example 2:
*These resistors are recommended to eliminate the possibility of oscillation due to capacitance load
Ref: QX1.DOC Rev: 1.00
QX-1 Data Sheet -- Preliminary QSound Labs, Inc.
Date: 09/23/99 Page 10 of 10


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