STMICROELECTRONICS STV6435

STV6435
®
Filtered Video Buffers for STB and DVD Devices
TARGET SPECIFICATION
FEATURES
■ Y, C, CVBS and RGB Inputs with 7 MHz Filters
■ 6 dB Gains
■ Capabilities of Integrated Output Buffers:
Single Load (150Ω) for RGB signals
Double Load (75Ω) for Y, C and CVBS signals
■ DC Coupled Outputs for CVBS and RGB
signals, DC or AC coupled output for Chroma
signal
■ Bottom Clamp on RGB, Y and CVBS, Bias
Clamp on C
SO24
Order Code: STV6435S
■ Crosstalk: 55 dB (typ.)
■ Separate Stand-by Modes on Y/C/CVBS and
on RGB signals
■ Switchable Y+C Adder for Decoders without
CVBS Outputs
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 75Ω
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.
PDIP20
Order Code: STV6435D
The STV6435 is mounted in a SO24 package
(STV6435S) or in a DIP package (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
Chapter 2
General Information
I/O Pin Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
............................................................................................................. 4
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1
Absolute Maximum Ratings ................................................................................................ 6
2.2
Thermal Data ...................................................................................................................... 6
2.3
Electrical Characteristics ...................................................................................................... 6
Chapter 3
Input/Output Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Chapter 4
Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Chapter 5
Package Mechanical Data
Chapter 6
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2/17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
STV6435
1
General Information
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
1
20
VCCB3
DEC
2
19
CVBSOUT
C_ENC
3
18
VCCB2
GND
4
17
COUT
5
16
GNDB
6
15
YOUT
G_ENC
7
14
GOUT
R_ENC
8
13
VCCB1
9
12
ROUT
10
11
BOUT
Y_ENC
VCC
MUTE
B_ENC
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
1.1
STV6435
I/O Pin Description
Table 1: Pin Description
STV6435S STV6435D
4/17
Name
Function
1
1
CVBS_ENC
CVBS Input from Encoder command internal CVBS switch
2
2
DEC
Decoupling Capacitor
3
3
C_ENC
Chroma Input from Encoder
4
4
GND
Ground
5
5
Y_ENC
Y Input from Encoder
6
GND
Ground
7
GND
Ground
8
6
VCC
+5 V Supply
9
7
G_ENC
Large-band Y Input from Encoder
10
8
R_ENC
Large-band R Input from Encoder
11
9
MUTE
4-State command for Mute
12
10
B_ENC
Large-band B Input from Encoder
13
11
BOUT
B Output
14
12
ROUT
R Output
15
13
VCCB1
+5 V Supply for Output Buffers
16
14
GOUT
G Output
17
15
YOUT
Y Output
18
GND
Ground
19
GND
Ground
20
16
GNDB
Ground for Buffers
21
17
COUT
Chroma Output
22
18
VCCB2
+5 V Supply for Output Buffers
23
19
CVBSOUT
CVBS Output
24
20
VCCB3
+5 V Supply for Output Buffers
STV6435
General Information
Figure 3: STV6435 Block Diagram
C_ENC
COUT
7 MHz
Av. Clamp
6 dB
Buffer
6 dB
Buffer
6 dB
Buffer
4th order
CVBS_ENC
7 MHz
CVBSOUT
Bot. Clamp
4th order
Digital Encoder
YOUT
7 MHz
Y_ENC
Bot. Clamp
4th order
MUTE
Mute
G_ENC
G_OUT
7 MHz
6 dB
Bot. Clamp
Buffer
4th order
R_ENC
R_OUT
7 MHz
Bot. Clamp
6 dB
Buffer
4th order
B_ENC
B_OUT
7 MHz
Bot. Clamp
6 dB
Buffer
4th order
5/17
Electrical Characteristics
STV6435
2
Electrical Characteristics
2.1
Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
6
V
-0.6 to VCC
V
±4
kV
Value
Unit
VCC, VCCB Supply Voltage
V
Voltage at all pins to Ground
VESD
2.2
ESD Susceptibility
Human Body Model: 100 pF discharged
through 1.5 kΩ serial resistor
Thermal Data
Symbol
RthJA
TJ
Parameter
Junction-to-Ambient Thermal
Resistance
STV6435S
STV6435D
70
65
°C/W
Maximum Recommended
Junction Temperature
STV6435S
STV6435D
130
°C
0 to +70
°C
-55 to +150
°C
TOPER
Operating Ambient Temperature
TSTG
Storage Temperature
2.3
Electrical Characteristics
Test conditions: TAMB = 25°C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 Ω, RLOUT = 75 Ω for
YOUT, CVBSOUT and COUT RLOUT = 150 Ω for GOUT, BOUT and ROUT, unless otherwise
specified.
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
VCC
Operating Supply Voltage
4.75
5.00
5.25
V
VCCB
Buffer Supply Voltage
4.75
5.00
5.25
V
65
mA
Active (Channels ON)
ICC1
Supply Current (VCC + VCCB)
No Load, MUTE pin to VCC pin
(5 V) All channels active
50
ICC2
Supply Current (VCC + VCCB)
No Load, MUTE pin = 1.5 V (not
connected) Y/C/CVBS active
30
mA
ICC3
Supply Current (VCC + VCCB)
No Load, MUTE pin = 3 V
RGB active
30
mA
No Load, MUTE pin to 0 V
4
mA
Standby (All Channels OFF)
ICCSTB
6/17
Total Supply Current
STV6435
2.3.1
Electrical Characteristics
Video Section (Y and CVBS Signals)
Test conditions: TAMB = 25°C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 Ω, RLOUT = 75 Ω for Y and
CVBS outputs and RLOUT = 150 Ω for G output, unless otherwise specified.
Symbol
Parameter
Test Conditions
VDCIN
DC Input Level, Bottom Clamp input
Bottom level, Y and CVBS inputs
ICLAMP
Clamping Current, Bottom Clamp
input
at VDCIN - 400 mV
Min.
1
Typ.
Max.
Unit
2
V
2
mA
Input Leakage Current, Bottom Clamp
VIN = VDCIN +1 V
input
1
CIN
Input Capacitance
2
VIN
Maximum Input Signal
VCCV = 5 V
1.5
VPP
DYN
Dynamic Output Signal
VCCV = 5 V
3
VPP
YF1
-1 dB Bandwidth (Flatness) of Y and
CVBS
1H signal
YF3
-3 dB Bandwidth of Y and CVBS
1H signal
Stopband Rejection
27 MHz versus 100 kHz
Spread of Gain in Video Bands
VIN = 1 VPP, Band = 15 kHz to
5 MHz for Y and CVBS
VCTo
Crosstalk Isolation of Y (or CVBS)
from C and RGB channels
VIN = 0.5 VPP at f = 3.58 MHz, on
either CIN_ENC, RIN_ENC,
BIN_ENC or GIN_ENC inputs,
RLOAD = 150Ω
ROUT
Output Resistance
ILEAK
YSBR
Flatness
4.0
10
µA
pF
4.5
MHz
7
MHz
- 40
dB
±0.5
55
dB
dB
5
10
Ω
6
6.5
dB
Gain on Y and CVBS channels
VIN = 1 VPP at f = 1 MHz
DC Output Voltage (Y)
Video signal bottom sync pulse at
IC output pins
0.5
V
Video signal bottom sync pulse at
IC output pin
1.0
V
Differential Phase
VIN = 1 VPP at f = 3.58 MHz
0.2
3
deg.
DG
Differential Gain
VIN = 1 VPP at f = 3.58 MHz
0.3
3
%
LNL
Luminance non-linearity
0.5
3
%
VSN7
Video S/N Ratio: Y, C, CVBS and RGB NTC-7 weighting 4.2 MHz
channels (7 MHz filter)
Lowpass
70
dB
Dtpd7
Group delay variation from flatness
20
nS
GY
DCYOUT
DCCVBSOUT DC Output Voltage (CVBS)
DPHI
7 MHz filter
5.5
7/17
Electrical Characteristics
2.3.2
STV6435
Chroma Section
Test conditions: TAMB = 25°C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 Ω and RLOUT = 75 Ω
unless otherwise specified.
Symbol
VDCIN
Parameter
Test Conditions
DC Input Level
Typ.
Max.
Unit
3
V
50
kΩ
2
pF
RIN
Input Resistance
CIN
Input Capacitance
VIN
Max Input Signal
1
VPP
Dynamic Output Signal
2
VPP
DYN
DCCOUT
DC Output Voltage (COUT)
CF1
-1 dB Bandwidth (Flatness)
CF3
-3 dB Bandwidth
CSBR
30
Without signal
4
Stopband Rejection
27 MHz versus 100 kHz
Spread of Gain in Video Bands
VIN = 1 VPP, Band = 15 kHz to
5 MHz for Y and CVBS
CCTo
Crosstalk Isolation of C from Y, RGB
and CVBS Channels
VIN = 1 VPP at f = 3.58 MHz, on Y
or CVBS inputs, R LOAD = 150Ω
ROUT
Output Resistance
GC
Gain on C channel
VIN = 1 VPP at f = 1 MHz
CToYdel
Chroma to Luma Delay, source Y/C
VIN = 1 VPP at f = 3.58 MHz
YCadd
Voltage to be applied at CVBS_ENC
input for Y+C adder selection
Flatness
8/17
Min.
1.5
V
4.5
MHz
7
MHz
- 40
dB
±0.5
55
5.5
dB
dB
5
10
Ω
6
6.5
dB
20
ns
VCC
V
VCC
STV6435
2.3.3
Electrical Characteristics
RGB Section
Test conditions: TAMB = 25°C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 Ω and RLOUT = 150 Ω,
unless otherwise specified.
Symbol
Parameter
Test Conditions
VDCIN
DC Input Level, Bottom Clamp input
ICLAMP
Clamping Current, Bottom Clamp
input
at VDCIN -400 mV
Input Leakage Current, Bottom
Clamp input
VIN = VDCIN +1 V
ILEAK
CIN
Input Capacitance
VIN
Max Input Signal
DYN
1
Typ.
DC Output Voltage
PF1
-1 dB Bandwidth (Flatness)
PF3
-3 dB Bandwidth
PSBR
V
2
mA
1
Video signal bottom sync at IC
output pin
4
27 MHz versus 100 kHz
Spread of Gain in Video Bands
VIN = 1 VPP,
Band = 15 kHz to 5 MHz
PCTo
Crosstalk Isolation of RGB from Y, C
and CVBS Channels
VIN = 1 VPP at f = 3.58 MHz,
on Y, C or CVBS input,
RLOAD = 150Ω
ROUT
Output Resistance
GP
Gain on RGB channels
Unit
10
µA
2
Stopband Rejection
Flatness
Max.
2.0
Dynamic Output Signal
DC RGBOUT
2.3.4
Min.
VIN = 1 VPP at f = 1 MHz
pF
1.5
VPP
3
VPP
0.5
V
4.5
MHz
7.0
MHz
- 40
dB
±0.5
dB
55
5.5
dB
5
10
Ω
6
6.5
dB
Mute Section
Test conditions: TAMB = 25°C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 Ω and RLOUT = 75 Ω
unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
0
1.1
V
V00
MUTE Voltage for Y/C/CVBS muted
and RGB muted
Pin MUTE to GND or logical 0
V01
MUTE Voltage for Y/C/CVBS active
and RGB muted
Pin MUTE opened (not
connected) See Note 1.
1.3
1.7
V
V10
MUTE Voltage for Y/C/CVBS muted
and RGB active
Pin MUTE connected by 22 kΩ to
VCC or at 3.3V (IIN < 140 µA)
1.9
4
V
V11
MUTE Voltage for Y/C/CVBS active
and RGB active
Pin MUTE to VCC (5V)
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 kΩ resistor to Vcc and 18 kΩ resistor to GND.
9/17
Input/Output Groups
3
STV6435
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
VCC 5 V
VCCB
2V + VBE
15 kΩ
10 kΩ
GNDB
V V REF
Mute
Protected Pad
GNDA
Figure 5: Average Clamped Video Input (C_ENC)
VCC 5 V
Figure 7: C Video Output (COUT)
VCC 5 V
VCCB
VCCB
5 kΩ
25 kΩ
Mute
25 kΩ
Protected Pad
10/17
2.3 V
V
V VREF
GNDA
GNDB
STV6435
Input/Output Groups
Figure 8: Decoupling Capacitor (DEC)
V CC 5 V
VCC 5 V
10 kΩ
12 kΩ
40 kΩ
1 kΩ
Protected Pad
12 kΩ
1 kΩ
Mute
1 kΩ
Mute
1 kΩ
Figure 9: Mute (MUTE)
VCC 5 V
VCC 5 V
42 kΩ
18 kΩ
V 1.2 V
V 1.8 V
V 4.1 V
Protected Pad
Figure 10: CVBS Input (CVBS_ENC)
VCC 5 V
V CC 5 V
2V + VBE
10 kΩ
15 kΩ
V
4.1 V
Mute
Protected Pad
11/17
Input/Output Groups
STV6435
Figure 11: Power Supply Connection
Float
VCC
VCCB2
VCCB3
5V
5V
VCCB1
GND
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
12/17
Description
VCCB1
GOUT, ROUT and BOUT Supply
VCCB2
YOUT and COUT Supply
VCCB3
CVBSOUT Supply
GNDB
Output Buffer Ground
VCC
Input Stages, Filters and 6-dB Amplifier Supply
GND
Input Stages, Filters and 6-dB Amplifier Ground
STV6435
4
Application Diagram
Application Diagram
Figure 12: Typical STV6435 Application Diagram
13/17
Package Mechanical Data
5
STV6435
Package Mechanical Data
Figure 13: 20-Pin Plastic Single in Line Package (PDIP20)
mm
Inches
Dim.
Min.
Typ.
A
Min.
Typ.
5.33
Max.
0.210
A1
0.38
A2
2.92
3.30
4.95
0.115
0.130
0.195
b
0.36
0.46
0.56
0.014
0.018
0.022
b2
1.14
1.52
1.78
0.045
0.060
0.070
c
0.20
0.25
0.36
0.008
0.010
0.014
D
24.89
26.92
0.980
e
14/17
Max.
0.015
2.54
1.060
0.100
E1
6.10
6.35
7.11
0.240
0.250
0.280
L
2.92
3.30
3.81
0.115
0.130
0.150
STV6435
Package Mechanical Data
Figure 14: 24-Pin Plastic Small Outline Package (SO24)
D
h x 45×
L
A
C
A1
a
B
e
E
H
mm
Inches
Dim.
Min.
Typ.
Max.
Min.
Typ.
Max.
A
2.35
2.65
0.093
0.104
A1
0.10
0.30
0.004
0.012
B
0.33
0.51
0.013
0.020
C
0.23
0.32
0.009
0.013
D
15.20
15.60
0.599
0.614
E
7.40
7.60
0.291
0.299
e
1.27
0.050
H
10.00
10.65
0.394
0.419
h
0.25
0.75
0.010
0.030
α
0°
8°
0°
8°
L
0.40
1.27
0.016
0.050
15/17
Revision History
6
STV6435
Revision History
Revision
Main Changes
Date
0.1
First Issue.
28 May 2002
0.2
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.
14 June 2002
1.0
Modification of Figure 3: STV6435 Block Diagram and Active Channel and Mute
values in Section 2.3: Electrical Characteristics.
21 June 2002
16/17
STV6435
Revision History
NOTES:
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
© 2003STMicroelectronics - All Rights Reserved
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17/17