Sony CXA2560 Dolby b type noise reduction system with playback equalizer amplifier Datasheet

CXA2560Q
Dolby∗ B Type Noise Reduction System with Playback Equalizer Amplifier
Description
The CXA2560Q is an IC designed for use in car
stereo cassette decks. Functions include Dolby B type
noise reduction (NR) system, playback equalizer
amplifier and music sensor into a single chip.
Features
• Few external parts
• Small package (40-pin QFP)
• Same pin configuration as for the Dolby B-C type
NR system (CXA2561Q) and no Dolby NR system
(CXA2559Q)
• Dolby B type NR and playback equalizer amplifier
into a single chip
• FORWARD/REVERSE head select switch
• Mute function
• Music signal interval detection level can be set by
the external resistors/capacitors (2 modes).
• High-frequency cut-off of the music sensor circuit
can be adjusted by the external capacitance.
40 pin QFP (Plastic)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
VCC
• Operating temperature Topr
• Storage temperature Tstg
• Power dissipation
PD
Operating Condition
Supply voltage
VCC
12
–40 to +85
–65 to +150
430
V
°C
°C
mW
6.5 to 11
V
Applications
• Car stereo cassette decks
• Playback-only cassette decks
∗ This IC is available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications
information may be obtained.
∗ "Dolby" and the double D symbols are trademarks of Dolby Laboratories Licensing Corporation.
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E97438A79-PS
CXA2560Q
PBTC2
PBOUT2
OUTREF2
TAPEIN2
GND
DIREF
LINEOUT2
TCH2
NC
MSSW
Block Diagram and Pin Configuration
30
29
28
27
26
25
24
23
22
21
7k/12k
PBRIN2
31
32
NR
70µ/120µ
PBFB2
300k
×1
PBGND 33
T2
MSMODE
19
DRSW
18
TAPESW
17
MUTESW
16
NRSW
15
NC
14
MSOUT
13
MSTC
12
G1FB
11
G2FB
MS MODE
BIAS
F2
MUTE
PBFIN2 34
30k
VCT
20
OFF/B
100k
TAPE EQ
NR MODE
35
FWD/RVS
45k
PBREF 36
VCC
30k
LPF
PBFIN1 37
DET
MS ON/
OFF
F1
PBGND
38
×1
300k
F3
T1
PBRIN1 39
OFF/B
70µ/120µ
7k/12k
100k
1
2
3
4
5
6
7
8
9
10
PBOUT1
OUTREF1
TAPEIN1
Vcc
NC
LINEOUT1
TCH1
NC
MSLPF
NR
PBTC1
PBFB1 40
–2–
CXA2560Q
Pin Description
Pin
No.
Symbol
(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)
Typical pin voltage
DC
I/O
AC
I/O
resistance
Equivalent circuit
Description
Vcc
1
30
PBTC1
PBTC2
4.0V
—
—
Playback equalizer
amplifier
capacitance.
147
—
1
30
GND
31 40
Vcc
2p
2
29
PBOUT1
PBOUT2
300k
4.0V
–25dBm
O
Playback equalizer
amplifier output.
200
—
2
147
29
200
GND
Vcc
3
28
OUTREF1
OUTREF2
4.0V
—
O
200
—
Output reference.
(Vcc/2 output)
3
28
200
GND
Vcc
4
27
TAPEIN1
TAPEIN2
4.0V
–30dBm
I
100kΩ
147
27
100k
VGS
5
Vcc
8.0V
—
—
—
TAPE input.
4
30p
GND
Power supply.
–3–
CXA2560Q
(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)
Pin
No.
Symbol
Typical pin voltage
DC
AC
I/O
I/O
resistance
Equivalent circuit
Description
Vcc
7
24
LINEOUT1
LINEOUT2
4.0V
–6dBm
O
200
147
—
Line output.
7
200
24
22.5k
GND
Vcc
8
23
TCH1
TCH2
0.3V
—
—
36k
147
—
Time constant for
the HLS.
8
330k
23
GND
Vcc
100k
10
MSLPF
4.0V
—
—
Cut-off frequency
adjustment of the
music sensor LPF.
147
100k
10
64p
GND
Vcc
11
12
G2FB
G1FB
Music signal
interval detection
level setting.
500
4.0V
—
—
—
147
11
12
500
GND
–4–
CXA2560Q
(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)
Pin
No.
Symbol
Typical pin voltage
DC
AC
I/O
I/O
resistance
Equivalent circuit
Description
Vcc
147
13
MSTC
—
—
—
—
Time constant for
detecting the
music signal
interval.
853
13
10k
GND
Vcc
14
MSOUT
0.2V
when a
signal is
detected
; DVcc
when no
signal is
detected
—
O
—
Music sensor
output.
14
GND
17
18
MUTESW
TAPESW
Vcc
0.0V
when
open
Playback
equalizer amplifier
control.
Low (open) : 70µs
High: 120µs
147
—
I
100kΩ
17
18
100k
21
21
GND
MSSW
Vcc
16
NRSW
0.0V
when
open
19
—
I
100kΩ
Music sensor
control.
Low (open) :
MS ON
High : MS OFF
Dolby NR control.
Low (open) :
NR OFF
High: NR ON
147
16
19
100k
DRSW
GND
–5–
Mute function
control.
Low (open) :
Mute OFF
High: Mute ON
Head select
control.
Low (open) :
FORWARD
High: REVERSE
CXA2560Q
(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)
Pin
No.
Symbol
Typical pin voltage
DC
I/O
AC
I/O
resistance
Equivalent circuit
Description
Vcc
20
MSMODE
0.0V
when
open
—
I
Music sensor
mode control.
Low (open): G1
High: G2
147
100kΩ
20
100k
GND
Vcc
25
DIREF
1.2V
—
—
Resistance for
setting the
reference current.
(Connects 18kΩ
between DIREF
pin and GND for
the standard
setting.)
147
—
25
GND
26
GND
0.0V
—
—
—
31
40
PBFB2
PBFB1
4.0V
–70dBm
I
—
32
39
33
38
–70dBm
I
—
150
150
39
31
34
40
37
PBFIN2
PBFIN1
PBGND
50p
50p
GND
0.0V
—
—
Playback
equalizer amplifier
feedback.
Vcc
32
PBRIN2
PBRIN1
4.0V
34
37
Ground.
Playback
equalizer amplifier
input.
(REVERSE head
connected)
Playback
equalizer amplifier
input.
(FORWARD head
connected)
Playback
equalizer amplifier
ground.
(Connect to
ground.)
—
–6–
CXA2560Q
(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)
Pin
No.
Symbol
Typical pin voltage
DC
I/O
AC
I/O
resistance
Equivalent circuit
Description
Vcc
30k
147
35
VCT
4.0V
—
O
VGS
—
×1
35
Center.
(Vcc/2 output)
45k
30k
GND
Vcc
Playback
equalizer amplifier
reference.
(Vcc/2 output)
200
36
PBREF
4.0V
—
O
—
36
200
GND
6
9
15
22
NC
—
—
—
—
Not connected.
–7–
CXA2560Q
Electrical Characteristics
Item
(Ta = 25°C, VCC = 8.0V. DVCC = 5.0V)
Symbol
Operating voltage
Vopr
Current consumption
ICC
Measurement conditions
No signal, NR OFF, MUTE OFF, 70µs,
MS ON
Min.
Typ.
Max.
Unit
6.5
8.0
11.0
V
7.6
11.6
15.6
mA
Dolby NR (0dB = Dolby level LINEOUT of –6dBm)
–32.0 –30.0 –28.0 dBm
TAPEIN input sensitivity
VTIN
TAPEIN 1kHz, LINEOUT 0dB, NR OFF
B type decode boost
characteristics 1
BP1
TAPEIN 500Hz, LINEOUT –25dB, NR B
1.4
2.9
4.4
dB
B type decode boost
characteristics 2
BP2
TAPEIN 2kHz, LINEOUT –25dB, NR B
5.5
7.0
8.5
dB
B type decode boost
characteristics 3
BP3
TAPEIN 5kHz, LINEOUT –25dB, NR B
3.9
5.4
6.9
dB
B type decode boost
characteristics 4
BP4
TAPEIN 10kHz, LINEOUT –40dB, NR B
9.7
10.4
11.9
dB
B type decode boost
characteristics 5
BP5
TAPEIN 10kHz, LINEOUT 0dB, NR B
–1.1
0.4
1.9
dB
Total harmonic
distortion 1
THD1
TAPEIN 1kHz –20dBm, NR OFF,
RL = 2.7kΩ
—
0.01
0.2
%
Total harmonic
distortion 2
THD2
TAPEIN 1kHz –20dBm, NR B,
RL = 2.7kΩ
—
0.04
0.2
%
Decode S/N ratio 1
SN1
No signal, NR B, Rg = 5.1kΩ,
CCIR/ARM filter used
77.0
87.0
—
dB
Signal handling
SH1
TAPEIN 1kHz, NR OFF, RL = 2.7kΩ,
THD = 1%
13.0
14.4
—
dB
Crosstalk between
channels 1
CT1
TAPEIN 1kHz –24dBm, NR OFF,
1kHz BPF used
—
–96.0 –70.0
dB
Mute characteristic
MUTE
TAPE IN 1kHz –24dBm, MUTE ON,
NR OFF, 1kHz BPF used
—
–110.0 –70.0
dB
Output DC offset voltage
VOS1
No signal, NR OFF, difference from VCT
–0.1
Playback equalizer amplifier
PBREF
reference output level
PBIN 315Hz –70dBm, 120µs mode
–27.0 –25.0 –23.0 dBm
Playback equalizer amplifier
F120
frequency response 1
PBIN 2.7kHz –58.5dBm,
120µs mode at 315Hz
–1.5
0.0
1.5
dB
Playback equalizer amplifier
F70
frequency response 2
PBIN 4.5kHz –53.8dBm,
70µs mode at 315Hz
–1.5
0.0
1.5
dB
Signal handling
SH2
PBIN 1kHz, 120µs mode, RL = 2.7kΩ,
THD = 1%
–10.0
–3.0
—
dBm
Total harmonic
distortion
THD4
PBIN 1kHz –52dBm, 120µs mode,
RL = 2.7kΩ
—
0.07
0.5
%
S/N ratio
SN3
No signal, 70µs mode, Rg = 680Ω,
CCIR/ARM filter used
57.0
63.5
—
dB
Output DC offset
voltage
VOS2
No signal, 120µs mode, Rg = 680Ω,
difference from VCT
–1.0
0.0
1.0
V
0.0
0.1
V
Playback Equalizer Amplifier
–8–
CXA2560Q
Item
Symbol
Measurement conditions
Min.
Typ.
Max.
Unit
CT4
PBIN 1kHz –52dBm, 120µs mode,
1kHz BPF used
—
–75.0 –70.0
dB
Crosstalk between
CT5
FORWARD and REVERSE
PBIN 1kHz –52dBm, 120µs mode,
1kHz BPF used
—
–80.0 –70.0
dB
Crosstalk between
channels
Music Sensor
Signal detection level 1
VMS1
TAPEIN 5kHz, MS ON, G1 mode,
external constant of 39kΩ and 0.0047µF
–43.0 –40.0 –37.0 dBm
Signal detection level 2
VMS2
TAPEIN 5kHz, MS ON, G2 mode,
external constant of 3.9kΩ and 0.47µF
–63.0 –60.0 –57.0 dBm
MS output leak current
IOH
No signal, MS OFF, G1 mode
—
0.0
1.0
µA
MS output saturation
voltage
VOL
TAPEIN 5kHz –30dBm, MS ON,
G1 mode, 1mA applied to MSOUT pin
—
0.3
1.0
V
Low level
VIL
Input voltage of NRSW, MUTESW,
TAPESW, DRSW, MSMODE, MSSW
0.0
—
0.8
V
High level
VIH
Input voltage of NRSW, MUTESW,
TAPESW, DRSW, MSMODE, MSSW
2.5
—
VCC
V
Logic Voltage
–9–
CXA2560Q
S4
∗ R6
680
S3
C4
2.2µ
∗ R5
680
Power
Supply
C3
22µ
27
26
25
24
23
22
OUTREF2
TAPEIN2
GND
DIREF
LINEOUT2
TCH2
NC
MSMODE 20
32 PBRIN2
DRSW 19
33 PBGND
TAPESW 18
34 PBFIN2
MUTESW 17
OFF: 0dB
ON: 30dB
MSMODE
H/L
S27
DRSW
H/L
"A" WTG
S26
TAPESW
H/L
MUTESW
H/L
DIN Audio
S25
NRSW
H/L
S24
NC 15
MSOUT 14
+20dB
DVCC
R22
10k S16
CCIR/ARM
TCH1
NC
MSLPF
6
LINEOUT1
5
7
8
9
10
G2FB 11
+20dB
R17
1MEG
∗ R15
39k
C23
4.7n
∗ R14
3.9k
C22
0.47µ
AC
Voltmeter
Distortion
Analyzer
C16
2.2µ
C15
270p
C18
0.1µ
Oscilloscope
S11
∗
NC
C10
22µ
S9
C8
2.2µ
4
C11
1µ
R12 2.7k
3
∗ R7
2.7k
VCC
2
R9 5.1k
1
TAPEIN1
OUTREF1
G1FB 12
S23
C24
0.1µ
MSTC 13
S7
C6
0.01µ
S17
∗ R28
50k
R16
100k
PBOUT1
C1
2.2µ
R23 10k
DC
Voltmeter
1kHz BPF
CXA2560Q
S5
S1
NRSW 16
PBFIN1
∗ R4 37
680
38 PBGND
∗ R3
680
39 PBRIN1
∗ R1
270
40 PBFB1
S18
GND GND
C2
2.2µ
GND
S19
R24 100
21
MSSW
28
PBTC1
S2
DC Ammeter A
29
36 PBREF
S20
R25 10k
S22
35 VCT
VCC
S21
MSSW
H/L
PBOUT2
C5
2.2µ
C19
0.1µ
C17
2.2µ
30
31 PBFB2
∗ R2
270
C12
1µ
R27 10k
R26 100
0dB or 30dB
Amp
PBTC2
C7
0.01µ
Audio
SG
∗ R11 18k
S6
∗ R10 5.1k
S8
∗ C9
2.2µ
R8
2.7k
∗R13 2.7k S10
Electrical Characteristics Measurement Circuit
R21 10k
S15
R20 100
S14
R19 10k
S13
R18 100
S12
Notes1. Resistor tolerance
2. Capacitor tolerance
Coupling Capacitor
– 10 –
±5%
∗: ±1%
±5%
∗: ±2%
±10%
CXA2560Q
Application Circuit
LINEOUT2
30
PBREF
BIAS
PBFB1
DRSW
18
MUTE
34
30k
17
TAPE EQ
35
NR MODE
45k
From
Microcomputer
TAPESW
MUTESW
NRSW
16
FWD/RVS
36
15 NC
MS ON/
OFF
MSOUT
DET
14
VCC
LPF
37
F1
38
×1
300k
39
7k/12k
PBOUT1
PBTC1
2
DVCC
R13
100k
G1FB
C18
0.1µ
G2FB
R12
1MEG
OFF/B
100k
11
NR
6
5
4
3
C8
0.1µ
C6
0.01µ
13
12
40
1
F3
To Microcomputer
MSTC
T1
NC
PBRIN1
MSMODE
MS MODE
Vcc
R5
180
PBGND
MSSW
LINEOUT2
DIREF
TAPEIN2
GND
T2
F2
70µ/120µ
C1
470p
×1
33
20
19
TAPEIN1
R1
100k
GND
PBFIN1
R2
100k
RVS1
300k
30k
C2
470p
FWD1
NR
OFF/B
100k
Vcc
C10
22µ
R7
10k
GND
8
7
C11
0.47µ
C13
0.1µ
GND
LINEOUT1
9
10
C17
120p
GND
R10
3.9k
R11
39k
C19 C20
0.47µ 4.7n
GND
GND
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
– 11 –
GND
VCT
32
21
22
MSLPF
C5
22µ
23
24
NC
PBFIN2
GND
C3
470p
31
OUTREF1
FWD2
PBGND
25
7k/12k
TCH1
R3
100k
PBRIN2
26
27
28
C12 C14
0.47µ 0.1µ
LINEOUT1
R4
100k
GND
RVS2
R6
180
29
R9
18k
70µ/120µ
PBFB2
C4
470p
OUTREF2
PBOUT2
PBTC2
C9
0.1µ
NC
C7
0.01µ
GND
GND
TCH2
GND
R8
10k
CXA2560Q
Description of Operation
1. Signal route
The CXA2560Q signal circuit is shown in Fig. 1.
24dB
NR OFF
NR ON
24dB
PB IN
FWD
MUTE OFF
MUTE ON
AMP1
RVS
AMP2
300k
MUTE OFF
7k/12k
PBFB
PBTC
PBOUT
NR
MUTE ON
VGS
100k
VGS
TAPEIN
(–30dBm)
LINEOUT
(–6dBm Dolby level)
Fig. 1. Signal route block diagram
2. Gain adjustment method
Adjust the playback equalizer amplifier gain so that –6dBm (Dolby level) is output on LINEOUT (Pins 7 and 24)
by playing back the reference tape for Dolby level adjustment.
Adjustment should be performed according to the rules of Dolby Laboratories Corporation because this IC has
the built-in Dolby NR system.
Dolby level is defined as 200nWb/m measured according to the ANSI high efficiency head method.
0
–6dBm
(Dolby level)
–10
PBOUT
–20
LINEOUT
–30dBm
–30
VR adjustment
–40
TAPEIN
–50
–60
–70
400Hz 200nWb/m: Dolby level reference tape
–80
(dBm)
PBIN (HEAD)
Fig. 2. Level diagram
– 12 –
Use the following reference tapes specified
by Dolby Laboratories Corporation.
1. A-bex Laboratories, Inc.
(part no. TCC-130)
2. BASF (product code 09797 XE)
3. Kaneon Corp.
(LC Engineering part no. LCT-7001)
4. Standard Tape Laboratory
(catalogue no. 28)
5. TEAC Corporation, Japan
(part no. MTT150)
6. TEAC Corporation of America
(part no. MTT150)
7. Victor Company of Japan, Ltd.
(part no. TMT-6130, VTT-727)
8. Sony Corporation (part no. TY-256)
CXA2560Q
3. Playback equalizer amplifier
PB IN
FWD
AMP1
RVS
300k
Ri
PBFB
PBTC
PBOUT
OUTREF
to TAPEIN
PBREF
R1
C1
0.01µ
Fig. 3. Playback equalizer amplifier block diagram
The CXA2560Q configures the playback equalizer amplifier by connecting the external capacitor C1 and
resistor R1 shown in Fig. 3.
Two systems (FORWARD and REVERSE) of playback head input are provided for each channel.
The FORWARD input pin is selected when DRSW (Pin 19) is Low; REVERSE is selected when DRSW is
High.
The playback equalizer amplifier frequency response can be set in two levels (70µs/120µs).
When TAPESW (Pin 18) is Low, Ri is 7kΩ; when TAPESW is High, Ri is 12kΩ.
The gain can be adjusted by connecting VR between PBOUT (Pins 2 and 9) and OUTREF (Pin 3 and 28); or
by using VR for the external R1.
T1
Gain [dB]
G1
G1 = 20 log
R1 + 300k
R1
G2, G3 = 20 log
–6dB/oct
R1 + Ri // 300k
R1
T1 = C1 · (300k + Ri)
T2
G2
T3
G3
f1
f2
f3
Frequency [Hz]
Fig. 4. Playback equalizer amplifier frequency response
– 13 –
T2, T3 =
C1 · (R1 · 300k + 300k · Ri + Ri · R1)
R1 + R2
CXA2560Q
4. Music sensor
TAPEIN2
D1
DVcc
×1
D2
R10
Vcc
R3
127k
R2
10k
×5
R4
100k
AMP1
R1
10k
Fullwave
rectifier
MSOUT
Smoother
AMP3
AMP2
C1
64p
Q1
R5B
10k
VGS
×1
TAPEIN1
R5A
29k
G1FB
MSLPF
C2
G2FB
C3
C4
R7
R8
R6
1k
0.775V for
signal detection
0.616V for no
signal detection
MSTC
R9
C5
Fig. 5. Music sensor block diagram
(1) Adjustment of music signal detection level
Adjust the external resistors R7 and R8 to adjust the music signal interval detection level.
The signal detection level v1 and no signal detection level v2 are expressed by the following equations.
v1 = –39 + 20 log (39k/Rext) [dBm] Rext: R7 or R8
v2 = v1 – 2 [dBm]
(2) Low-frequency cut-off adjustment of music sensor
Adjust the external resistors R7, R8 and the external capacitors C3, C4 to adjust the low-frequency cut-off.
The low-frequency cut-off is expressed by the following equation.
fc1 = 1/ (2π · Cext · Rext)
Cext, Rext: C3, R7 or C4, R8
(3) High-frequency cut-off adjustment of music sensor
Adjust the external capacitor C2 to MSLPF (Pin 10) to adjust the high-frequency cut-off. The high-frequency
cut-off is expressed by the following equation.
fc2 = 1/ (2π · (64p + C2) · 100k)
The high-frequency cut-off is approximately 25kHz when MSLPF is left open .
(4) Response time adjustment
Adjust the external resistor R9 and the external capacitor C5 to adjust the response time.
The response time for signal detection depends on the internal resistor R6 and the external capacitor C5.
The response time for no signal detection depends on the external resistor R9 and the external capacitor
C5.
– 14 –
CXA2560Q
5. Operating mode control method
The CXA2560Q has a Dolby NR switch (NRSW), mute switch (MUTESW), playback equalizer amplifier select
switch (TAPESW), head input select switch (DRSW), music sensor mode select switch (MSMODE) and music
sensor switch (MSSW).
The operating modes for each switch are shown in the following table.
Pin No.
Pin voltage
Pin name
Low (OPEN)
High
Dolby NR OFF
Dolby NR ON
16
NRSW
17
MUTESW
MUTE OFF
MUTE ON
18
TAPESW
70µs
120µs
19
DRSW
PBIN FORWARD
PBIN REVERSE
20
MSMODE
G1
G2
21
MSSW
MS ON
MS OFF
Notes on Operation
1. DIREF pin resistance
The current on DIREF (Pin 25) is the reference for the Dolby NR static characteristic, playback equalizer
amplifier resistor 7kΩ/12kΩ and the comparator threshold value of the music sensor.
Use the resistor with high accuracy for connecting to the DIREF pin.
(The resistance accuracy of 2% <metal-oxide> is recommended.)
2. Dolby NR
The Dolby NR attack/recovery time is determined by the capacitance connected to TCH (Pins 8 and 23).
Use the parts, connected to these pins, with high accuracy and small temperature characteristics.
(The capacitance accuracy of 10% <film> is recommended.)
3. Playback equalizer amplifier
The playback equalizer amplifier characteristics are determined by the resistor connected between the IC
internal resistor and PBFB (Pins 31 and 40) and the capacitor connected between PBFB and PBTC (Pins 1
and 30). Use the parts which satisfies the accuracy required for the playback equalizer amplifier.
4. Music sensor
The resistance and capacitance connected to G2FB (Pin 11) and G1FB (Pin 12) determine the detection
level and high-frequency cut-off.
The response time is determined by the resistance and capacitance connected to MSTC (Pin 13).
Use the parts which satisfies the accuracy required for the music sensor.
– 15 –
CXA2560Q
Example of Representative Characteristics
Supply voltage vs. Current consumption
13.0
Ta = 25°C
Current consumption [mA]
12.8
12.6
12.4
12.2
No signal
NR OFF
MUTE OFF
70µs
MS ON
12.0
11.8
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
Supply voltage [V]
Playback equalizer amplifier frequency response
65
Ta = 25°C
60
PBFIN
Gain [dB]
55
47µ
50
680
45
40
35
VCC = 8.0V
Input : PBFIN1
Output : PBOUT1
PBFB
PBREF
120µs
70µs
30
25
Decode boost [dB]
–40dB
–30dB
6
–20dB
4
Ta = 25°C
–10dB
2
0
0dB
100
1k
2.2µ
0.01µ
Fig. 6 Measurement circuit for playback equalizer
amplifier frequency response
10
8
PBOUT
10k
B type decode boost characteristics
VCC = 8.0V
0dB = Dolby Level
7k/12k
PBTC
PBREF
270
1k
100
Frequency [Hz]
12
300k
10k
Frequency [Hz]
– 16 –
CXA2560Q
B type total harmonic distortion (NR OFF included)
Total harmonic distortion (playback equalizer amplifier)
100
f = 10kHz
Total harmonic distortion [%]
Total harmonic distortion [%]
101
VCC = 8.0V
Input : PBFIN1
Output : PBOUT1
RL = 2.7kΩ
Ta = 25°C
VCC = 8.0V
Input : TAPEIN1
Output : LINEOUT1
RL = 2.7kΩ
0dB = Dolby Level
Ta = 25°C
f = 1kHz
100
10–1
NR ON
f = 10kHz
f = 100Hz
10–1
10–2
–24
–20
–16
–12 –8
–4
0
Output level [dBm]
4
NR OFF
f = 1kHz
–10
6
Ripple rejection ratio (PBOUT)
Ta = 25°C
VCC = 8.0V
RL = 2.7kΩ
–45
–50
–55
–60
–25
1k
–2
2
6
Output level [dBm]
10
14
Ta = 25°C
VCC = 8.0V
RL = 2.7kΩ
NR OFF
–30
–35
–40
–45
NR B
–50
–65
100
–6
Ripple rejection ratio (LINEOUT)
Ripple rejection ratio [dB]
Ripple rejection ratio [dB]
–40
NR ON
f = 1kHz
NR ON
f = 100Hz
10k
100
Frequency [Hz]
1k
10k
Frequency [Hz]
Crosstalk [dB]
Crosstalk between channels (1ch→ 2ch)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
PBFIN
VCC = 8.0V
Input : PBFIN1
Output : LINEOUT2
(LINEOUT1 level = 0dBm)
NR OFF
Ta = 25°C
24dB
47µ
680
300k
7k
PBFB PBTC PBOUT
TAPEIN
PBREF
LINEOUT
2.2µ
PBREF
270
0.1µ
Fig. 7 Measurement circuit for crosstalk
between channels
100
1k
Frequency [Hz]
10k
– 17 –
CXA2560Q
Frequency response for signal and blank detection level
Ta = 25°C
VCC = 8.0V
Input : TAPEIN1
G1 : R = 39kΩ, C = 4.7nF
G2 : R = 3.9kΩ, C = 0.47µF
–0
Input level [dBm]
–10
–20
Signal detection level
–30
–40
G1
Blank detection level
–50
Signal detection level
G2
–60
Blank detection level
100
1k
10k
Frequency [Hz]
Signal detection response time (G1)
Signal detection response time (G2)
Input TAPEIN1 f = 5kHz – 38dBm Ta = 25°C
Input TAPEIN1 f = 5kHz – 58dBm Ta = 25°C
1.0
1.0
TAPEIN1
TAPEIN1
MSOUT
Response time [ms]
Response time [ms]
MSOUT
Response time
MSOUT 14
V CC
100k
1MEG
MSTC 13
C
G1FB 12
0.1
39k
0.047µ
0.01
0.01
C
G2FB 11
0.1
3.9k
1.0
0.1
MSTC capacitance [µF]
Blank detection response time (G1)
Signal detection response time (G2)
Ta = 25°C
Input TAPEIN1 f = 5kHz
1000
–10dBm
TAPEIN1
MSOUT
Ta = 25°C
–30dBm
TAPEIN1
MSOUT
MSOUT 14
Response time [ms]
Response time
Response time [ms]
0.47µF
MSTC capacitance [µF]
Input TAPEIN1 f = 5kHz
1000
100k
1MEG
MSTC 13
0.01
0.01
1.0
0.1
Response time
MSOUT 14
V CC
100k
MSTC 13
G1FB 12
39k 0.0047µ
–20dBm
–30dBm
100
10
Response time
MSOUT 14
100k
–40dBm
MSTC 13
G2FB 11
3.9k
100
0.47µF
–50dBm
10
0.01
0.1
MSTC time constant [s]
1.0
0.01
– 18 –
0.1
MSTC time constant [s]
1.0
CXA2560Q
Package Outline
Unit: mm
40PIN QFP (PLASTIC)
+ 0.35
1.5 – 0.15
+ 0.1
0.127 – 0.05
9.0 ± 0.4
+ 0.4
7.0 – 0.1
0.1
21
30
20
31
A
11
40
1
+ 0.15
0.3 – 0.1
0.65
10
± 0.12 M
0.5 ± 0.2
(8.0)
+ 0.15
0.1 – 0.1
DETAIL A
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
QFP-40P-L01
LEAD TREATMENT
SOLDER / PALLADIUM
PLATING
EIAJ CODE
∗QFP040-P-0707
LEAD MATERIAL
COPPER / 42 ALLOY
PACKAGE WEIGHT
0.2g
JEDEC CODE
NOTE : PALLADIUM PLATING
This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
– 19 –
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