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STV6435
Filtered Video Buffers for STB and DVD Devices
TARGET SPECIFICATION
FEATURES
s Y, C, CVBS and RGB Inputs with 7 MHz Filters s 6 dB Gains s Capabilities of Integrated Output Buffers: Single Load (150) for RGB signals Double Load (75) for Y, C and CVBS signals s DC Coupled Outputs for CVBS and RGB signals, DC or AC coupled output for Chroma signal s Bottom Clamp on RGB, Y and CVBS, Bias Clamp on C s Crosstalk: 55 dB (typ.) s Separate Stand-by Modes on Y/C/CVBS and on RGB signals s Switchable Y+C Adder for Decoders without CVBS Outputs
SO24 Order Code: STV6435S
DESCRIPTION
The STV6435 is a filtered video output interface for STB and DVD applications. After removing D/A conversion noises using integrated low pass filters, the STV6435 adapts in amplitude and impedance the video signals coming from the digital decoder for transmission, via 75 adapted cables, to the TV set, VCR and auxiliary devices. The STV6435 is powered by a 5V supply. The STV6435 is fully compatible with STi55xx Digital Decoders. The STV6435 is mounted in a SO24 package (STV6435S) or in a DIP package (STV6435D). PDIP20 Order Code: STV6435D
September 2003
This is preliminary information on a new product forseen to be developed. Details are subject to change without notice.
1/17
STV6435
Table of Contents
Chapter 1
1.1
General Information
I/O Pin Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
............................................................................................................. 4
Chapter 2
2.1 2.2 2.3
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Absolute Maximum Ratings ................................................................................................ 6 Thermal Data ...................................................................................................................... 6 Electrical Characteristics ...................................................................................................... 6
Chapter 3 Chapter 4 Chapter 5 Chapter 6
Input/Output Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Package Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2/17
STV6435
General Information
1
General Information
Figure 1: STV6435S Pinout
CVBS_ENC DEC C_ENC GND Y_ENC GND GND VCC G_ENC R_ENC MUTE B_ENC
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
VCCB3 CVBSOUT VCCB2 COUT GNDB GND GND YOUT GOUT VCCB1 ROUT BOUT
Figure 2: STV6435D Pinout
CVBS_ENC DEC C_ENC GND Y_ENC VCC G_ENC R_ENC MUTE B_ENC
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCCB3 CVBSOUT VCCB2 COUT GNDB YOUT GOUT VCCB1 ROUT BOUT
Note:
The three RGB channels are identical and their pin assignments may be interchanged in an application if needed. In this case, verify that the outputs correspond to the inputs; for example, the pin 7 input must correspond to the pin 14 output.
3/17
General Information
STV6435
1.1
I/O Pin Description
Table 1: Pin Description
STV6435S STV6435D
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 16 17 18 19 20 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5
Name
CVBS_ENC DEC C_ENC GND Y_ENC GND GND VCC G_ENC R_ENC MUTE B_ENC BOUT ROUT VCCB1 GOUT YOUT GND GND GNDB COUT VCCB2 CVBSOUT VCCB3
Function
CVBS Input from Encoder command internal CVBS switch Decoupling Capacitor Chroma Input from Encoder Ground Y Input from Encoder Ground Ground +5 V Supply Large-band Y Input from Encoder Large-band R Input from Encoder 4-State command for Mute Large-band B Input from Encoder B Output R Output +5 V Supply for Output Buffers G Output Y Output Ground Ground Ground for Buffers Chroma Output +5 V Supply for Output Buffers CVBS Output +5 V Supply for Output Buffers
4/17
STV6435
Figure 3: STV6435 Block Diagram
General Information
C_ENC
7 MHz Av. Clamp 4th order 7 MHz Bot. Clamp 4th order 6 dB Buffer 6 dB Buffer
COUT
CVBS_ENC
CVBSOUT
Y_ENC
7 MHz Bot. Clamp 4th order 6 dB Buffer
YOUT
Digital Encoder
MUTE
Mute
G_ENC
Bot. Clamp
7 MHz 6 dB 4th order Buffer
G_OUT
R_ENC
Bot. Clamp
7 MHz 6 dB 4th order Buffer
R_OUT
B_ENC
Bot. Clamp
7 MHz 6 dB 4th order Buffer
B_OUT
5/17
Electrical Characteristics
STV6435
2
2.1
Electrical Characteristics
Absolute Maximum Ratings
Parameter Value
6 -0.6 to VCC 4
Symbol
VCC, VCCB Supply Voltage V VESD Voltage at all pins to Ground ESD Susceptibility
Unit
V V kV
Human Body Model: 100 pF discharged through 1.5 k serial resistor
2.2
Thermal Data
Parameter
Junction-to-Ambient Thermal Resistance Maximum Recommended Junction Temperature Operating Ambient Temperature Storage Temperature STV6435S STV6435D STV6435S STV6435D
Symbol
RthJA TJ TOPER TSTG
Value
70 65 130 0 to +70 -55 to +150
Unit
C/W C C C
2.3
Electrical Characteristics
Test conditions: TAMB = 25C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 , RLOUT = 75 for YOUT, CVBSOUT and COUT RLOUT = 150 for GOUT, BOUT and ROUT, unless otherwise specified.
Symbol VCC VCCB
Parameter
Operating Supply Voltage Buffer Supply Voltage
Test Conditions
Min.
4.75 4.75
Typ.
5.00 5.00
Max.
5.25 5.25
Unit
V V
Active (Channels ON) ICC1 ICC2 ICC3 Supply Current (VCC + VCCB) Supply Current (VCC + VCCB) Supply Current (VCC + VCCB) No Load, MUTE pin to VCC pin (5 V) All channels active No Load, MUTE pin = 1.5 V (not connected) Y/C/CVBS active No Load, MUTE pin = 3 V RGB active 50 30 30 65 mA mA mA
Standby (All Channels OFF) ICCSTB Total Supply Current No Load, MUTE pin to 0 V 4 mA
6/17
STV6435 2.3.1 Video Section (Y and CVBS Signals)
Electrical Characteristics
Test conditions: TAMB = 25C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 , RLOUT = 75 for Y and CVBS outputs and RLOUT = 150 for G output, unless otherwise specified.
Symbol VDCIN ICLAMP ILEAK CIN VIN DYN YF1 YF3 YSBR Flatness
Parameter
DC Input Level, Bottom Clamp input Clamping Current, Bottom Clamp input
Test Conditions
Bottom level, Y and CVBS inputs at VDCIN - 400 mV
Min.
Typ.
2
Max.
Unit
V mA
1
2 1 2 10
Input Leakage Current, Bottom Clamp VIN = VDCIN +1 V input Input Capacitance Maximum Input Signal Dynamic Output Signal -1 dB Bandwidth (Flatness) of Y and CVBS -3 dB Bandwidth of Y and CVBS Stopband Rejection Spread of Gain in Video Bands VCCV = 5 V VCCV = 5 V 1H signal 1H signal 27 MHz versus 100 kHz VIN = 1 VPP, Band = 15 kHz to 5 MHz for Y and CVBS VIN = 0.5 VPP at f = 3.58 MHz, on either CIN_ENC, RIN_ENC, BIN_ENC or GIN_ENC inputs, RLOAD = 150 4.0
A pF
1.5 3 4.5 7 - 40 0.5
VPP VPP MHz MHz dB dB
VCTo
Crosstalk Isolation of Y (or CVBS) from C and RGB channels
55
dB
ROUT GY DCYOUT
Output Resistance Gain on Y and CVBS channels DC Output Voltage (Y) VIN = 1 VPP at f = 1 MHz Video signal bottom sync pulse at IC output pins Video signal bottom sync pulse at IC output pin VIN = 1 VPP at f = 3.58 MHz VIN = 1 VPP at f = 3.58 MHz 5.5
5 6 0.5 1.0 0.2 0.3 0.5 70 20
10 6.5
dB V V
DCCVBSOUT DC Output Voltage (CVBS) DPHI DG LNL VSN7 Dtpd7 Differential Phase Differential Gain Luminance non-linearity
3 3 3
deg. % % dB nS
Video S/N Ratio: Y, C, CVBS and RGB NTC-7 weighting 4.2 MHz channels (7 MHz filter) Lowpass Group delay variation from flatness 7 MHz filter
7/17
Electrical Characteristics 2.3.2 Chroma Section
STV6435
Test conditions: TAMB = 25C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 and RLOUT = 75 unless otherwise specified.
Symbol VDCIN RIN CIN VIN DYN DCCOUT CF1 CF3 CSBR Flatness
Parameter
DC Input Level Input Resistance Input Capacitance Max Input Signal Dynamic Output Signal DC Output Voltage (COUT) -1 dB Bandwidth (Flatness) -3 dB Bandwidth Stopband Rejection Spread of Gain in Video Bands Crosstalk Isolation of C from Y, RGB and CVBS Channels Output Resistance Gain on C channel Chroma to Luma Delay, source Y/C Voltage to be applied at CVBS_ENC input for Y+C adder selection
Test Conditions
Min.
Typ.
3
Max.
Unit
V k pF
30
50 2 1 2
VPP VPP V MHz MHz dB
Without signal 4
1.5 4.5 7
27 MHz versus 100 kHz VIN = 1 VPP, Band = 15 kHz to 5 MHz for Y and CVBS VIN = 1 VPP at f = 3.58 MHz, on Y or CVBS inputs, R LOAD = 150
- 40 0.5
dB
CCTo ROUT GC CToYdel YCadd
55 5 10 6.5 20 VCC VCC
dB dB ns V
VIN = 1 VPP at f = 1 MHz VIN = 1 VPP at f = 3.58 MHz
5.5
6
8/17
STV6435 2.3.3 RGB Section
Electrical Characteristics
Test conditions: TAMB = 25C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 and RLOUT = 150 , unless otherwise specified.
Symbol VDCIN ICLAMP ILEAK CIN VIN DYN DC RGBOUT PF1 PF3 PSBR Flatness
Parameter
DC Input Level, Bottom Clamp input Clamping Current, Bottom Clamp input Input Leakage Current, Bottom Clamp input Input Capacitance Max Input Signal Dynamic Output Signal DC Output Voltage -1 dB Bandwidth (Flatness) -3 dB Bandwidth Stopband Rejection Spread of Gain in Video Bands
Test Conditions
Min.
Typ.
2.0
Max.
Unit
V mA
at VDCIN -400 mV VIN = VDCIN +1 V
1
2 1 2 1.5 3 10
A pF VPP VPP V MHz MHz dB
Video signal bottom sync at IC output pin 4
0.5 4.5 7.0
27 MHz versus 100 kHz VIN = 1 VPP, Band = 15 kHz to 5 MHz VIN = 1 VPP at f = 3.58 MHz, on Y, C or CVBS input, RLOAD = 150
- 40 0.5
dB
PCTo
Crosstalk Isolation of RGB from Y, C and CVBS Channels Output Resistance Gain on RGB channels
55
dB dB
ROUT GP
5 VIN = 1 VPP at f = 1 MHz 5.5 6
10 6.5
2.3.4
Mute Section
Test conditions: TAMB = 25C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 and RLOUT = 75 unless otherwise specified.
Symbol V00 V01 V10 V11
Parameter
MUTE Voltage for Y/C/CVBS muted and RGB muted MUTE Voltage for Y/C/CVBS active and RGB muted MUTE Voltage for Y/C/CVBS muted and RGB active MUTE Voltage for Y/C/CVBS active and RGB active
Test Conditions
Pin MUTE to GND or logical 0 Pin MUTE opened (not connected) See Note 1. Pin MUTE connected by 22 k to VCC or at 3.3V (IIN < 140 A) Pin MUTE to VCC (5V)
Min.
0 1.3
Typ.
Max.
1.1 1.7
Unit
V V
1.9
4
V
4.2
Vcc
V
Note: 1 When the MUTE pin is left open, its voltage is defined by an internal voltage divider performed by a 42 k resistor to Vcc and 18 k resistor to GND.
9/17
Input/Output Groups
STV6435
3
Input/Output Groups
Figure 4: Bottom Clamped Video Input (Y_ENC, R_ENC, G_ENC and B_ENC)
Figure 6: Video Outputs (CVBSOUT, YOUT, GOUT, ROUT and BOUT)
VCCB
VCC 5 V 2V + VBE
VCC 5 V
VCCB
15 k
10 k
GNDB
Mute Protected Pad V V REF
GNDA
Figure 5: Average Clamped Video Input (C_ENC)
Figure 7: C Video Output (COUT)
VCC 5 V
VCC 5 V
VCCB
VCCB
5 k
25 k Mute 25 k Protected Pad 2.3 V V
V VREF
GNDA
GNDB
10/17
STV6435
Figure 8: Decoupling Capacitor (DEC)
Input/Output Groups
V CC 5 V
VCC 5 V
10 k
40 k
12 k
12 k
1 k Protected Pad
Mute
1 k
1 k
Mute
1 k
Figure 9: Mute (MUTE)
VCC 5 V
VCC 5 V
42 k
18 k V 1.2 V Protected Pad V 1.8 V V 4.1 V
Figure 10: CVBS Input (CVBS_ENC)
VCC 5 V V CC 5 V 2V + VBE
10 k 15 k V Mute Protected Pad 4.1 V
11/17
Input/Output Groups
Figure 11: Power Supply Connection
STV6435
Float VCC VCCB3 VCCB2 VCCB1 5V GND 5V
GNDB
These symbols represent some huge diode and Zener-like components used for ESD Protection of the device. They are not supposed to be paths for any current in normal operation mode.
Table 2: Power Supply Connections Supply
VCCB1 VCCB2 VCCB3 GNDB VCC GND GOUT, ROUT and BOUT Supply YOUT and COUT Supply CVBSOUT Supply Output Buffer Ground Input Stages, Filters and 6-dB Amplifier Supply Input Stages, Filters and 6-dB Amplifier Ground
Description
12/17
STV6435
Application Diagram
4
Application Diagram
Figure 12: Typical STV6435 Application Diagram
13/17
Package Mechanical Data
STV6435
5
Package Mechanical Data
Figure 13: 20-Pin Plastic Single in Line Package (PDIP20)
mm Dim. Min.
A A1 A2 b b2 c D e E1 L 6.10 2.92 0.38 2.92 0.36 1.14 0.20 24.89 2.54 6.35 3.30 7.11 3.81 0.240 0.115 3.30 0.46 1.52 0.25 4.95 0.56 1.78 0.36 26.92
Inches Max.
5.33 0.015 0.115 0.014 0.045 0.008 0.980 0.100 0.250 0.130 0.280 0.150 0.130 0.018 0.060 0.010 0.195 0.022 0.070 0.014 1.060
Typ.
Min.
Typ.
Max.
0.210
14/17
STV6435
Package Mechanical Data
Figure 14: 24-Pin Plastic Small Outline Package (SO24)
D L A A1 a B e C h x 45x
E
H
mm Dim. Min.
A A1 B C D E e H h L 10.00 0.25 0 0.40 2.35 0.10 0.33 0.23 15.20 7.40 1.27 10.65 0.75 8 1.27 0.394 0.010 0 0.016
Inches Max.
2.65 0.30 0.51 0.32 15.60 7.60
Typ.
Min.
0.093 0.004 0.013 0.009 0.599 0.291
Typ.
Max.
0.104 0.012 0.020 0.013 0.614 0.299
0.050 0.419 0.030 8 0.050
15/17
Revision History
STV6435
6
Revision History
Main Changes
First Issue. Addition of Figure 12, Modification of Figure 3, RGB Bottom Clamp, RGB parameters in Chapter 2: Electrical Characteristics and diagrams Chapter 3: Input/Output Groups. Modification of Figure 3: STV6435 Block Diagram and Active Channel and Mute values in Section 2.3: Electrical Characteristics.
Revision
0.1 0.2
Date
28 May 2002 14 June 2002
1.0
21 June 2002
16/17
STV6435
NOTES:
Revision History
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2003STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. www.st.com
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