STV6434 ® Filtered Video Buffers for STB and DVD Devices TARGET SPECIFICATION FEATURES ■ Y, C, CVBS Inputs with 7 MHz Filters ■ Y, Pr, Pb Inputs with 14 MHz Filters ■ 6 dB Gains ■ Capabilities of Integrated Output Buffers: Single Load (150Ω) for Y/Pr/Pb signals Double Load (75Ω) for Y, C and CVBS signals ■ DC Coupled Outputs for CVBS and YPrPb signals, DC or AC coupled output for Chroma signal SO24 Order Code: STV6434S ■ Bottom Clamp on Y and CVBS, Bias Clamp on C, Sync Clamps on Pr and Pb ■ Crosstalk: 55 dB (typ.) ■ Separate Stand-by Modes on Y/C/CVBS and on Y/Pr/Pb signals ■ Switchable Y+C Adder for Decoders without CVBS Outputs DESCRIPTION The STV6434 is a filtered video output interface for STB and DVD applications. After removing D/A conversion noises using integrated low pass filters, the STV6434 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 STV6434 is powered by a 5V supply. PDIP20 Order Code: STV6434D The STV6434 is fully compatible with STi55xx Digital Decoders. The STV6434 is mounted in a SO24 package (STV6434S) or in a DIP package (STV6434D). September 2003 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1/18 STV6434 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Chapter 5 Package Mechanical Data Chapter 6 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 2/18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 STV6434 1 General Information General Information Figure 1: STV6434S Pinout CVBS_ENC DEC C_ENC GND Y1_ENC GND GND VCC Y2_ENC PR_ENC MUTE PB_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 Y1OUT Y2OUT VCCB1 PROUT PBOUT Figure 2: STV6434D Pinout CVBS_ENC 1 20 VCCB3 DEC 2 19 CVBSOUT C_ENC 3 18 VCCB2 GND 4 17 COUT Y1_ENC 5 16 GNDB VCC 6 15 Y1OUT Y2_ENC 7 14 Y2OUT PR_ENC 8 13 VCCB1 MUTE 9 12 PROUT 10 11 PBOUT PB_ENC 3/18 General Information 1.1 STV6434 I/O Pin Description Table 1: Pin Description STV6434S STV6434D 4/18 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 Y1_ENC Y Input from Encoder 6 GND Ground 7 GND Ground 8 6 VCC +5 V Supply 9 7 Y2_ENC Large-band Y Input from Encoder 10 8 PR_ENC Large-band Pr Input from Encoder 11 9 MUTE 4-State command for Mute 12 10 PB_ENC Large-band Pb Input from Encoder 13 11 PBOUT Pb Output 14 12 PROUT Pr Output 15 13 VCCB1 +5 V Supply for Output Buffers 16 14 Y2OUT Y2 Output 17 15 Y1OUT Y1 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 STV6434 General Information Figure 3: STV6434 Block Diagram C_ENC COUT 7 MHz Av. Clamp 6 dB Buffer 6 dB Buffer 6 dB Buffer 4th order CVBS_ENC CVBSOUT 7 MHz Bot. Clamp 4th order Digital Encoder Y1_ENC Y1OUT 7 MHz Bot. Clamp 4th order MUTE Mute Y2_ENC Y2_OUT 14 MHz 6 dB Bot. Clamp Sync Extract. PR_ENC Buffer 4th order PR_OUT 14 MHz 6 dB Syn. Clamp Buffer 4th order PB_ENC PB_OUT 14 MHz 6 dB Syn. Clamp Buffer 4th order 5/18 Electrical Characteristics STV6434 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 STV6434S STV6434D 70 65 °C/W Maximum Recommended Junction Temperature STV6434S STV6434D 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 Y1OUT, CVBSOUT and COUT RLOUT = 150 Ω for Y2OUT, PBOUT and PROUT, 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) Y1/C/CVBS active 30 mA ICC3 Supply Current (VCC + VCCB) No Load, MUTE pin = 3 V Y2/Pr/Pb active 30 mA No Load, MUTE pin to 0 V 4 mA Standby (All Channels OFF) ICCSTB 6/18 Total Supply Current STV6434 2.3.1 Electrical Characteristics Video Section (Y1, Y2 and CVBS Signals) Test conditions: TAMB = 25°C, VCC = 5 V; VCCB = 5 V; RGENERATOR = 75 Ω, RLOUT = 75 Ω for Y1 and CVBS outputs and RLOUT = 150 Ω for Y2 output, unless otherwise specified. Symbol Parameter Test Conditions VDCIN DC Input Level, Bottom Clamp input Bottom level, Y1 and CVBS inputs ICLAMP Clamping Current, Bottom Clamp input at VDCIN - 400 mV ILEAK Min. 1 Input Leakage Current, Bottom Clamp VIN = VDCIN +1 V input VDCIN_YSYNC DC Input Level Typ. Unit 2 V 2 mA 1 Y2 input, YPrPb mode, black level Max. 10 µA 2.3 V 2 pF CIN Input Capacitance VIN Maximum Input Signal VCCV = 5 V 1.4 VPP DYN Dynamic Output Signal VCCV = 5 V 2.8 VPP Y1F1 -1 dB Bandwidth (Flatness) of Y1 and 1H signal CVBS 4.0 4.5 MHz Y2F1 -1 dB Bandwidth (Flatness) of Y2 2H signal 8 9 MHz Y1F3 -3 dB Bandwidth of Y1 and CVBS 1H signal 7 MHz Y2F3 -3 dB Bandwidth of Y2 2H signal 14 MHz Y1SBR Stopband Rejection 27 MHz versus 100 kHz - 40 dB Y2SBR Stopband Rejection 54 MHz versus 100 kHz - 40 dB Spread of Gain in Video Bands VIN = 1 VPP Band = 15 kHz to 5 MHz for Y1 and CVBS Band = 15 kHz to 10 MHz for Y2 VCTo Crosstalk Isolation of Y1 (or Y2 or CVBS) from C and Pr Pb channels VIN = 0.5 VPP at f = 3.58 MHz, on either CIN_ENC or PRIN_ENC or PBIN_ENC input, RLOAD = 150Ω ROUT Output Resistance Flatness ±0.5 55 dB dB 5 10 Ω 6 6.5 dB Gain on Y1, Y2 and CVBS channels VIN = 1 VPP at f = 1 MHz DC Output Voltage (Y1 and Y2) 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 % GY DCYOUT DCCVBSOUT DC Output Voltage (CVBS) DPHI 5.5 VSN7 Video S/N Ratio: Y1, C and CVBS channels (7 MHz filter) NTC-7 weighting 4.2 MHz Lowpass 70 dB VSN14 Video S/N Ratio: Y2, Pr and Pb channels (14 MHz filter) NTC-7 weighting 4.2 MHz Lowpass 67 dB 7/18 Electrical Characteristics Symbol Parameter STV6434 Test Conditions Min. Typ. Max. Unit Dtpd7 Group delay variation from flatness 7 MHz filter 20 nS Dtpd14 Group delay variation from flatness 14 MHz filter 10 nS 2.3.2 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 Y1 and CVBS CCTo Crosstalk Isolation of C from Y1, Y2 and CVBS Channels VIN = 1 VPP at f = 3.58 MHz, on Y1 or Y2 or CVBS inputs, RLOAD = 150Ω ROUT Output Resistance GC Gain on C channel VIN = 1 VPP at f = 1 MHz CToYdel Chroma to Luma Delay, source Y1/C VIN = 1 VPP at f = 3.58 MHz YCadd Voltage to be applied at CVBS_ENC input for Y+C adder selection Flatness 8/18 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 STV6434 2.3.3 Electrical Characteristics Pb/Pr 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 Min. Typ. Max. Unit VDCIN_SYNC DC Input Level Sync clamp input (Pr,Pb) Sync signal on Y input 3.0 V ICLAMP_SYN Clamping Current, Sync clamp Sync clamp input (Pr,Pb) at VDCIN -400 mV 100 µA 2 pF C CIN Input Capacitance VIN Max Input Signal 1 VPP Dynamic Output Signal 2 VPP DYN DCPrPbOUT DC Output Voltage (Pr and Pb Outputs) PF1 -1 dB Bandwidth (Flatness) PF3 -3 dB Bandwidth PSBR Black Level sync signal on Y2 input 8 Stopband Rejection 27 MHz versus 100 kHz Spread of Gain in Video Bands VIN = 1 VPP Band = 15 kHz to 10 MHz PCTo Crosstalk Isolation of Pr or Pb from Y1, Y2 and CVBS Channels VIN = 1 VPP at f = 3.58 MHz, on Y1 or Y2 or CVBS input, RLOAD = 150Ω ROUT Output Resistance Flatness GP 2.3.4 Gain on Pr and Pb channels VIN = 1 VPP at f = 1 MHz 1.5 V 9 MHz 14 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 V00 MUTE Voltage for Y1/C/CVBS muted and Y2/Pr/Pb muted Pin MUTE to GND or logical 0 V01 MUTE Voltage for Y1/C/CVBS active and Y2/Pr/Pb muted V10 V11 Min. Typ. Max. Unit 0 1.1 V Pin MUTE opened (not connected) See Note 1. 1.3 1.7 V MUTE Voltage for Y1/C/CVBS muted and Y2/Pr/Pb active Pin MUTE connected by 22 kΩ to VCC or at 3.3V (IIN < 140 µA) 1.9 4 V MUTE Voltage for Y1/C/CVBS active and Y2/Pr/Pb 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. 9/18 Input/Output Groups 3 STV6434 Input/Output Groups Figure 4: Bottom Clamped Video Input (Y1_ENC) Figure 6: Video Outputs (CVBSOUT, Y1OUT, Y2OUT, PROUT and PBOUT) VCC 5 V VCC 5 V VCCB VCCB 2V + VBE 15 kΩ 10 kΩ GNDB Mute V V REF 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 10/18 2.3 V V V VREF GNDA GNDB STV6434 Input/Output Groups Figure 8: Black Level Clamped Video Input (Y2_ENC) VCC 5 V VCC 5 V VCC 5 V VCC 5 V 5 kΩ Mute 11 kΩ 20 kΩ Protected Pad Figure 9: Pb/Pr Inputs (PR_ENC and PB_ENC) VCC 5 V V CC 5 V 2V + VBE 10 kΩ 15 kΩ Mute Protected Pad Figure 10: Decoupling Capacitor (DEC) V CC 5 V VCC 5 V 10 kΩ 40 kΩ 1 kΩ Protected Pad 12 kΩ Mute 12 kΩ 1 kΩ 1 kΩ Mute 1 kΩ 11/18 Input/Output Groups STV6434 Figure 11: 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 12: CVBS Input (CVBS_ENC) VCC 5 V V CC 5 V 2V + VBE 10 kΩ 15 kΩ V 4.1 V Mute Protected Pad Figure 13: Power Supply Connection Float VCC VCCB3 VCCB2 VCCB1 5V 5V 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. 12/18 STV6434 Input/Output Groups Table 2: Power Supply Connections Supply Description VCCB1 Y2OUT, PROUT and PBOUT Supply VCCB2 Y1OUT 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 13/18 Application Diagram 4 STV6434 Application Diagram Figure 14: Typical STV6434 Application Diagram +5 V CVBS TV 75 R 2 10 µF 1 47nF 100nF C 2 3 4 100nF Y 5 Y 100nF 6 1µF 7 100nF Pr 8 9 100nF Pb 10 CVBSENC DEC CENC VCCB3 CVBSOUT VCCB2 GND COUT Y1ENC GNDB VCC Y1OUT Y2ENC Y2OUT PRENC VCCB1 MUTE PROUT PBENC PBOUT 20 Monitor 100nF 19 18 17 Y/C 100nF 100nF TV 75 R . 75 R 16 . . 100nF CVBS 75 R STV6434D . From digital Encoder 1 Y/C Adder Enable 15 14 13 100nF Y/C Monitor 12 11 75 R . R R R R R Use the appropriate Encoder termination resistances Grounds should be linked underneath the IC ! YPrPb 16/9 Ident 75 R 75 R 75 R YPrPb Application with Chroma AC Output 14/18 . . R . 75 R Y Pr Pb STV6434 5 Package Mechanical Data Package Mechanical Data Figure 15: 20-Pin Plastic Single in Line Package (PDIP20) K1 e4 K2 A2 A G A1 L C E1 S e b2 e3 e1 b D mm Inches Dim. Min. Typ. A Max. 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 D 24.89 26.92 0.980 e 0.015 2.54 0.014 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 15/18 Package Mechanical Data STV6434 Figure 16: 24-Pin Plastic Small Outline Package (SO24) D h x 45× L A C A1 a B e E H mm Inches Dim. Min. 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 16/18 Typ. 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 STV6434 6 Revision History Revision History Revision Main Changes Date 0.1 First Issue. 03 January 2002 1.0 Revised Issue. Document format updated. 31 January 2002 1.1 Modification of MUTE and PB_ENC pinout. Modification of Figure 3: STV6434 Block Diagram. Modification of values in Section 2.3: Electrical Characteristics, Section 2.3.1: Video Section (Y1, Y2 and CVBS Signals), Section 2.3.2: Chroma Section and Section 2.3.3: Pb/Pr Section. 13 February 2002 1.2 Addition of Section 3: Input/Output Groups. Modification of Figure 3: STV6434 Block Diagram. Modification of values in Section 2.3: Electrical Characteristics, Section 2.3.1: Video Section (Y1, Y2 and CVBS Signals), Section 2.3.2: Chroma Section and Section 2.3.3: Pb/Pr Section. 23 April 2002 1.3 Addition of Figure 14: Typical STV6434 Application Diagram, Modification of Figure 3: STV6434 Block Diagram and parameters in Section 2.3: Electrical Characteristics. 14 June 2002 1.4 Modification of Figure 3: STV6434 Block Diagram and Active Channel and Mute values in Section 2.3: Electrical Characteristics. 21 June 2002 1.5 Modification of Vin and DYN values in Section 2.3.1: Video Section (Y1, Y2 and CVBS Signals). 27 August 2003 17/18 Revision History STV6434 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 © 2003 STMicroelectronics - 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 18/18