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PDF CXA2161R Data sheet ( Hoja de datos )
| Número de pieza | CXA2161R | |
| Descripción | I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control | |
| Fabricantes | Sony Corporation | |
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CXA2161R
I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control
Description
The Sony CXA2161R is an Audio/Video switch
designed primarily for application in Digital Set Top
Boxes. It provides video and audio routing from the
digital encoder source to the TV and VCR scart (peri-
television) connectors. In addition, the TV audio
output has a programmable volume control. The chip
is programmed by means of an I2C interface and can
operate from a single or dual power supply.
Target specifications: Canal+, BSkyB, TPS, NorDig,
and ECCA Euro-Box
Features
Supply
• Single: 0V, +5V, +12V
• Dual: 0V, –5V, +5V and +12V
(Low number of external parts required)
Video
• 2 scart switching (VCR, TV)
• VCR input supports RGB mode
• Integrated 75Ω drivers for direct video connection
• Y/C mixer with trap for RF modulators
• Switchable clamps on inputs
• Adjustable gain on RGB outputs
• Video output shutdown for low power modes
• Fast blanking switch
• Slow blanking switch for TV and VCR output
• SVHS switch on VCR output
• Y/C auxiliary input
Audio
• Four stereo audio inputs
• Volume control (–56dB to +6dB in 2dB steps)
• Additional switchable gain on audio DAC inputs
• Audio overlay facility
• Volume bypass for TV and Phono outputs
• Mono switching on TV, VCR outputs
• High drive capability (600Ω loads possible)
• Switchable audio limiter function
• Switchable Mono output for RF modulators
• Audio output disable
56 pin LQFP (Plastic)
I2C and Logic
• Fast mode compatible I2C bus
• Function monitor with loop through
• Interrupt output for function monitor
• Logic output pin
• Sync detector for Y/CVBS inputs
Applications
• Digital Set Top Box
• Integrated digital television
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
unless stated
• Supply voltage
VCC 14
V
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 1.1 W
(when mounted on the board)
Operating Conditions
• Single supply
• Dual supply
• Operating temperature
Topr
12 ± 0.6
5 ± 0.25
–5 ± 0.25
5 ± 0.25
12 ± 0.6
–20 to +75
V
V
V
V
V
°C
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–
E00202-PS
1 page  
Pin Description
Pin
No.
Symbol
Pin
voltage [V]
50 VIN_1
7 VIN_2
6 VIN_4
2.4
Equivalent circuit
VCC
6 150
7
50
51 VIN_3
52 VIN_5
5 VIN_7
53 VIN_6
1 VIN_13
2.4
2.35
2.4
3.0
3.0
VCC
150
51
VCC
20k
150
5
52
VCC
20k
150
1
53
54 VIN_8
55 VIN_9
4 VIN_10
3 VIN_11
56 VIN_12
47 VOUT_1
46 VOUT_2
45 VOUT_3
43 VOUT_4
39 VOUT_6
2.35
—
VCC
54
3
55
4
56
150
VCC
43
39
45
46
12k 47
CXA2161R
Description
RGB signal inputs
RGB signal input
or
CVBS/Luminance signal input
RGB signal inputs
or
Chrominance signal inputs
Chrominance signal inputs
CVBS/Luminance signal inputs
RGB/CVBS signal outputs
(See description of operation for pin
voltages)
–5–
5 Page 
CXA2161R
Item Symbol
Conditions
Min. Typ. Max. Unit
Rin1 + Lin1
TV
(mono mix)
GVA6
f = 1kHz, 0.5Vrms stereo input. TV volume
set to 0dB, RIN_1/LIN_1 amplifier = –6dB. –0.5
TV mono switch on. (Fig. 4)
0
0.5 dB
Rin1 + Lin1 MONO
GVA7
f = 1kHz, 1Vrms stereo input. TV volume
set to 0dB, RIN_1/LIN_1 amplifier = –6dB. –0.5
(Note 1) (Fig. 4)
0
0.5 dB
Rin2, 3, 4 or TV or
Lin2, 3, 4
Phono
GVA9
f = 1kHz, 1Vrms input, TV volume set to
0dB (Fig. 4)
–0.5
0
0.5 dB
Rin1 + Lin1
VCR
(mono mix)
GVA8
f = 1kHz, 1Vrms stereo input. RIN_1/LIN_1
amplifier = –6dB. VCR mono switch on. –0.5
(Fig 4)
0
0.5 dB
Rin2 + Lin2
Rin3 + Lin3
Rin4 + Lin4
MONO
GVA10
f = 1kHz, 1Vrms stereo input. TV volume
set to 0dB (Note 2) (Fig 4)
–0.5
0
0.5 dB
Rin2, 3, 4
Lin2, 3, 4
VCR
GVA11 f = 1kHz, 1Vrms input (Fig 4)
–0.5 0 0.5 dB
Rin2 + Lin2
Rin3 + Lin3
Rin4 + Lin4
VCR
(mono mix)
GVA12
f = 1kHz, 1Vrms stereo input. VCR mono
switch on. (Fig 4)
–0.5
0
0.5 dB
Rin3
RTV,
f = 1kHz, 1Vrms input, Lin3 has no signal
ROUT1, GVA13 Audio overlay enabled with –11dB
–5.5 –5 –4.5 dB
Phono_R
attenuation at input RIN_3 (Fig 4)
Lin3
LTV,
LOUT1,
Phono_L
GVA14
f = 1kHz, 1Vrms input
Audio overlay enabled. (Fig 4)
–0.5 0 0.5 dB
Audio frequency response FAF
0.3Vp-p input. Output/input gain at 30kHz
with 1kHz serving as 0dB (Fig 4)
–0.3
0
0.3 dB
Frequency bandwidth
FBWA1
0.3Vp-p input; frequency where output
level is –3dB with 1kHz serving as 0dB.
No load attached (Fig 4)
— 1 — MHz
Distortion
THD
f = 1kHz, 0.5Vrms, unweighted response;
LPF@400Hz, HPF@80kHz (Fig 4)
— 0.005 0.2
%
Input dynamic range
Rin1, 2, 3, 4/Lin1, 2, 3, 4
VdA1
f = 1kHz, RIN_1/LIN_1 input amplifier set
to –6dB. Dual supply mode used. (Fig 4)
2.5
2.9
— Vrms
Cross talk
(Channel separation)
VctA
f = 1kHz, 1Vrms input on one input,
measure on any other audio output (Fig 4)
—
— –76 dB
DC offset
Voff Offset voltage between input and output –30 0 30 mV
Input impedance
Rin1, 2, 3, 4/Lin1, 2, 3, 4
Zin1
(excluding any external series resistor)
— 120 — kΩ
Output impedance
Zout (excluding any external series resistor)
— 10 — Ω
Phase difference
Vpda
f = 1kHz, 1Vrms input to two channels.
Phase difference of stereo output measured
—
0.05
—
deg
S/N ratio
S/NA
f = 1kHz, 1Vrms input (at 0dB volume).
HPF@20Hz, LPF@20kHz. (Fig 4)
80 93 — dB
Note 1) Mono switch set to mix of Rin1 & Lin1 inputs.
Note 2) Mono switch set to mix of RTV & LTV after volume control.
– 11 –
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CXA2161R.PDF ] | |
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