|
|
PDF STV0056A Data sheet ( Hoja de datos )
| Número de pieza | STV0056A | |
| Descripción | SATELLITE SOUND AND VIDEO PROCESSORS | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de STV0056A (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
|
No Preview Available !
STV0056A
SATELLITE SOUND AND VIDEO PROCESSOR
SOUND
. TWO INDEPENDENT SOUND DEMODULA-
TORS
. PLL DEMODULATION WITH 5-10MHz FRE-
QUENCY SYNTHESIS
. PROGRAMMABLE FM DEMODULATOR
BANDWIDTH ACCOMODATING FM DEVIA-
TIONS FROM ±30kHz TILL ±400kHz
. PROGRAMMABLE 50/75µs, J17 OR NO DE-
EMPHASIS
. WEGENER PANDA SYSTEM
. TWO AUXILIARY AUDIO INPUTS AND OUT-
PUTS
. GAIN CONTROLLED AND MUTEABLE
AUDIO OUTPUTS
. HIGH IMPEDANCE MODE AUDIO OUTPUTS
FOR TWIN TUNER APPLICATIONS
VIDEO
. COMPOSITE VIDEO 6-bit 0 to 12.7dB GAIN
CONTROL
. COMPOSITE VIDEO SELECTABLE IN-
VERTER
. TWO SELECTABLE VIDEO DE-EMPHASIS
NETWORKS
. 6 x 3 VIDEO MATRIX
. BLACK LEVEL ADJUSTABLE OUTPUT FOR
ON-BOARD VIDEOCRYPT DECODER
. HIGH IMPEDANCE MODE VIDEO OUTPUTS
FOR TWIN TUNER APPLICATIONS
MISCELLANEOUS
. 22kHz TONE GENERATION FOR LNB CON-
TROL
. I2C BUS CONTROL
CHIP ADDRESSES = 06HEX OR 46HEX
. LOW POWER STAND-BY MODE WITH AC-
TIVE AUDIO AND VIDEO MATRIXES
DESCRIPTION
The STV0056A BICMOS integrated circuit realizes
all the necessary signal processing from the tuner
to the Audio/Video input and output connectors
regardless the satellite system.
ADVANCE DATA
SHRINK56
(Plastic Package)
ORDER CODE : STV0056A
PIN CONNECTIONS
FC R
PK IN R
LEVEL R
S1 VID RTN
S3 VID RTN
VOL R
S3 VID OUT
S1 VID OUT
S2 VID OUT
VOL L
S2 VID RTN
S2 OUT L
CLAMP IN
S2 OUT R
UNCL DEEM
VIDEEM2/22kHz
V 12V
VIDEEM1
V GND
B-BAND IN
S2 RTN L
S2 RTN R
FM IN
S3 RTN L
S3 RTN R
AGC L
S3 OUT L
S3 OUT R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56 A GND R
55 FC L
54 PK IN L
53 LEVEL L
52 PK OUT L
51 PK OUT R
50 IREF
49 CPUMP R
48 U75 R
47 DET R
46 AMPLK R
45 A 12V
44 VREF
43 A GND L
42 AGC R
41 AMPLK L
40 U75 L
39 DET L
38 CPUMP L
37 GND 5V
36 VDD 5V
35 XTL
34 J17 L
33 J17 R
32 HA
31 SDA
30 SCL
29 I/O/22kHz
September 1996
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.
1/26
1 page  
STV0056A
PIN DESCRIPTION (continued)
VIDEO PROCESSING
B-BAND IN
AC-coupled video input from a tuner.
ZIN > 10kΩ ±25%. This drives an on-chip video
amplifier. The other input of this amp is AC
grounded by being connected to an internal VREF.
The video amplifier has selectable gain from 0dB
to 12.7dB in 63 steps and its output signal can be
selected normal or inverted.
UNCL DEEM
Deemphasized still unclamped output. It is also an
input of the video matrix.
VIDEEM1
Connected to an external de-emphasis network
(for instance 625 lines PAL de-emphasis).
VIDEEM2 / 22kHz
Connected to an external de-emphasis network
(for instance 525 lines NTSC or other video de-em-
phasis). Alternatively a precise 22kHz tone may be
output by I2C bus control.
CLAMP IN
This pin clamps the most negative extreme of the
input (the sync tips) to 2.7VDC (or appropriate volt-
age). The video at the clamp input is only 1VPP.
This clamped video which is de-emphasised, fil-
tered and clamped (energy dispersal removed) is
normal, negative syncs, video. This signal drives
the Video Matrix input called Normal Video.
It has a weak (1.0µA ±15 %) stable current source
pulling the input towards GND. Otherwise the input
impedance is very high at DC to 1kHz ZIN > 2MΩ.
Video bandwidth through this is -1dB at 5.5MHz.
The CLAMP input DC restore voltage is then used
as a means for getting the correct DC voltage on
the SCART outputs.
S3 VID RTN
This input can be driven for instance by the de-
coder. This input has a DC restoration clamp on its
input. The clamp sink current is 1µA ±15% with the
buffer ZIN > 1MΩ.
S2 VID RTN, S1 VID RTN
External video input 1.0Vpp ACcoupled 75Ω source
impedance. This input has a DC restoration clamp
on its input. The clamp sink current is 1µA ±15%
with the buffer ZIN > 1MΩ. This signal is an input to
the Video Matrix.
S1 VID OUT, S2 VID OUT
Video drivers for SCART 1 and SCART 2. An
external emitter follower buffer is required to drive
a 150Ω load. The average DC voltage to be 1.5V
on the O/P. The signal is video 2.0VPP 5.5MHz BW
with sync tip = 1.2V. These pins get signals from
the Video Matrix. The signal selected from the
Video Matrix for output on this pin is controlled by
a control register. This output also feature a high
impedance mode for parallel connection.
S3 VID OUT
This output can drive for instance a decoder. Also
it is able to pass 10MHz ; ZOUT < 75Ω. Video on
this pin will be 2VPP. The black level of the ouput
video signal can be adjusted through I2C bus con-
trol to easily interface with on-board Videocrypt
decoder. This output feature an high impedance
mode for parallel connection.
V 12V
+ 12V double bonded : ESD+guard rings and video
circuit power.
V GND
Doubled bonded. Clean VID IN GND. Strategically
placed video power ground connection to reduce
video currents getting into the rest of the circuit.
CONTROL BLOCK
GND 5V
The main power ground connection for the control
logic, registers, the I2C bus interface, synthesizer
& watchdog and XTLOSC.
VDD 5V
Digital +5V power supply.
SCL
This is the I2C busclock line. Clock = DC to 100kHz.
Requires external pull up eg. 10kΩ to 5V.
SDA
This is the I2C bus data line. Requires external pull
up eg. 10kΩ to 5V.
I/O / 22kHz
General purpose input output pin or 22kHz output.
XTL
This pin allows for the on-chip oscillator to be either
used with a crystal to ground of 4MHz or 8MHz, or
to be driven by an external clock source. The
external source can be either 4MHz or 8MHz. A
programmablebit in the control block removes a ÷2
block when the 4MHz option is selected.
HA
Hardware address with internal 135µA pull down.
Chip address is 06 when this pin is grouded and
chip address is 46 when connected to VDD.
5/26
5 Page 
STV0056A
DC AND AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = 12V, VDD = 5V, Tamb = 25oC unless otherwise specified)
Symbol
Parameter
Test Conditions
AUDIO OUTPUT (Pins VOL OUT R, VOL OUT L)
DCOL DC Output Level
AOLN Audio Output Level
with Reg 00 = 1A
FM input as for APA50
No de-emphasis, No pre-emphasis
No noise reduction
AOL50 Audio Output Level
with Reg 00 = 1A
FM input as for APA50
50µs de-emphasis, 27kΩ//2.7nF load
No pre-emphasis, No noise reduction
AOL75 Audio Output Level
with Reg 00 = 1A
FM input as for APA50
75µs de-emphasis, 27kΩ//2.7nF load
No pre-emphasis, No noise reduction
AOL17 Audio Output Level
with Reg 00 = 1A
FM input as for APA50
J17 de-emphasis, 36kΩ 4.7kΩ 8.2nF load
No pre-emphasis, No noise reduction
AMA1 Audio Output Attenuation
with Mute-on. Reg 00 = 00.
1VPP - 1kHz from S2 RTN Pins
MXAT Max Attenuation before Mute.
Reg 00 = 01.
1kHz, from S2 RTN Pins
MXAG Audio Gain. Reg 00 = 1F.
1kHz, from S2 RTN Pins
ASTP Attenuation of each of the 31
steps
1kHz
THDA1 THD with Reg 00 = 1A
1VPP -1kHz from S2 RTN Pins
THDA2 THD with Reg 00 = 1A
2VPP -1kHz from S2 RTN Pins
THDFM THD with Reg 00 = 1A
FM input as for APA50
75µs de-emphasis, ANRS ON
ACS Audio Channel Separation
1VPP -1kHz on S2 RTN Pins
ACSFM
Audio Channel Separation at 1kHz
- 0.5 VPP - 50kHz deviation FM input on
one channel
- 0.5VPP no deviation FM input on the
other channel
- Reg 05 = 36HEX
- 75µs de-emphasis, no ANRS
SNFM Signal to Noise Ratio
FM input as for APA50,
75µs de-emphasis,
no ANRS, Unweighted
SNFMNR Signal to Noise Ratio
FM input as for APA50
75µs de-emphasis,
ANRS ON, Unweighted
ZOUT L Audio Output Impedance
ZOUT H
Low impedance mode
High impedance mode
AUXILIARY AUDIO OUTPUT (Pins S2 OUT R, S2 OUT L, S3 OUT R, S3 OUT L)
DCOLAO DC output level
AOLNS Audio Output Level
on S2 and S3
AOL50S Audio Output Level
on S2 and S3
AOL75S Audio Output Level
on S2 and S3
AOL17S Audio Output Level
on S2 and S3
AGAO S2 to S3 Audio Gain
and S3 to S2 Audio Gain
THDA02 THD on S2, Input in S3
Aux. input pins open circuit
FM input as for APA50
No de-emphasis, No pre-emphasis
No noise reduction
FM input as for APA50
50µs de-emphasis, 27kΩ//2.7nF load
No pre-emphasis, No noise reduction
FM input as for APA50
75µs de-emphasis, 27kΩ//2.7nF load
No pre-emphasis, No noise reduction
FM input as for APA50
J17 de-emphasis, 36kΩ 4.7kΩ 8.2nF load
No pre-emphasis, No noise reduction
1kHz
2VPP - 1kHz from Aux input pins
Min. Typ. Max.
4.8
1.5 1.9 2.34
2.0 3.3 4.0
2.0 3.3 4.0
2.0 3.2 4.0
60 65
32.75
567
1.25
0.15
0.3 1
0.3 1
60 74
60
56
69
18
30 44 55
4.8
1.55 2 2.42
2.0 3.4 4.0
2.0 3.4 4.0
2.0 3.3 4.0
-1 0 +1
0.04 0.2
Unit
V
VPP
VPP
VPP
VPP
dB
dB
dB
dB
%
%
%
dB
dB
dB
dB
Ω
kΩ
V
VPP
VPP
VPP
VPP
dB
%
11/26
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet STV0056A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| STV0056A | SATELLITE SOUND AND VIDEO PROCESSORS | ST Microelectronics |
| STV0056AF | SATELLITE SOUND AND VIDEO PROCESSORS | ST Microelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |