UNISONIC TECHNOLOGIES CO., LTD CCVGA7C5 Preliminary TVS VGA PORT COMPANION CIRCUIT DESCRIPTION The UTC CCVGA7C5 is an ESD solution for the VGA port connector. This device integrates ESD protection for all signals, Two non-inverting drivers provide buffering for the HSYNC and VSYNC signals from the video controller IC. These buffers accept TTL input levels and convert them to CMOS output levels that swing between Ground and VCC 。 These drivers have a nominal 60Ω output impedance to match the characteristic impedance of the HSYNC and VSYNC lines of the video cables typically used. The inputs of these drivers also have high impedance pull−ups (50kΩ nom.) pulling up to the VAUX rail. In addition, the DDC_CLOCK and DDC_DATA channels have 1.8kΩ resistors pulling these inputs up to the main 5V (VCC) rail. The upper ESD diodes for the R, G and B channels are connected to a separate supply rail (VRGB) to facilitate interfacing to graphics controller ICs with low voltage supplies. The remaining channels are connected to the main 5 V rail (VCC). The lower diodes for the R, G and B channels are also connected to a dedicated ground pin (GNDA) to minimize crosstalk due to common ground impedance. ESD protection is implemented with current steering diodes designed to safely handle the high peak surge currents associated with the IEC−1000−4−2 Level−4 ESD Protection Standard (±8kV contact discharge). When the channels are subjected to an electrostatic discharge, the ESD current pulse is diverted via the protection diodes into the positive supply rails or ground where they may be safely dissipated. FEATURES * 7 Channels of ESD Protection Designed to Meet IEC−1000−4−2 Level−4 ESD Requirements (±8kV Contact Discharge) * Three Independent Supply Pins (VCC, VRGB and VAUX) to Facilitate Operation with Sub−Micron Graphics Controller ICs * Very Low Loading Capacitance from ESD Protection Diodes at Less than 5pF Typical * TTL to CMOS Level−Translating Buffers for the HSYNC and VSYNC Lines * High impedance Pull−Ups (50kΩ Nominal to VAUX) for HSYNC and VSYNC Inputs * Pull−Up Resistors (1.8kΩ Nominal to VCC) for DDC_CLK and DDC_DATA Lines ORDERING INFORMATION Ordering Number Lead Free Halogen Free CCVGA7C5L-R16-T CCVGA7C5G-R16-T CCVGA7C5L-R16-R CCVGA7C5G-R16-R Package Packing SSOP-16 SSOP-16 Tube Tape Reel CCVGA7C5L-R16-T (1)Packing Type (1) T: Tube, R: Tape Reel (2)Package Type (2) R16: SSOP-16 (3)Lead Free (3) L: Lead Free, G: Halogen Free www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd 1 of 6 QW-R223-021.a CCVGA7C5 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. PIN NAME 1 HSYNC_OUT 2 HSYNC 3, 11 GNDD 4 VRGB 5 B 6 G 7 R 8 GNDA 9, 16 VCC 10 12 DDC_DATA DDC_CLK 13 VAUX 14 VSYNC 15 VSYNC_OUT TVS DESCRIPTION Horizontal sync signal buffer output. Connects to the video connector side of the horizontal sync line. Horizontal sync signal buffer input. Connects to the VGA Controller side of the horizontal sync line. Digital ground reference supply pin. VRGB supply pin. This is an isolated supply pin for the R, G and B ESD protection circuits. Blue signal video protection channel. This pin is typically tied to the B video line between the VGA controller device and the video connector. Green signal video protection channel. This pin is typically tied to the G video line between the VGA controller device and the video connector. Red signal video protection channel. This pin is typically tied to the R video line between the VGA controller device and the video connector. Analog ground reference supply pin. VCC supply pin. This is the main supply input for the DDC_CLK and DDC_DATA pullup resistors and ESD protection circuits. It is also connected to the sync buffers and to the ESD protection diodes present on the HSYNC_OUT and VSYNC_OUT lines. DDC data pin. DDC clock pin. VAUX supply pin. This is the supply input for the 50kΩ pullups connected to the HSYNC and VSYNC buffer inputs. Vertical sync signal buffer input. Connects to the VGA Controller side of the vertical sync line. Vertical sync signal buffer output. Connects to the video connector side of the vertical sync line. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R223-021.a CCVGA7C5 Preliminary TVS BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R223-021.a CCVGA7C5 Preliminary TVS ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage Inputs VCC, VRGB, VAUX GND-0.5 ~ +6.0 V Diode Forward Current 20 mA (One Diode Conducting at a Time) R, G, B GND-0.5 ~ VRGB +0.5 V DC Voltage at Inputs HSYNC, VSYNC GND-0.5 ~ VAUX +0.5 V DDC_CLK, DDC_DATA GND-0.5 ~ VCC +0.5 V Package Power Rating 750 mW Operating Temperature Range TOPR 0 ~ +70 °C Storage Temperature Range TSTG −40 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. STANDARD OPERATING CONDITIONS PARAMETER SYMBOL TEST CONDITIONS Main Supply Voltage VCC RGB Supply Voltage VRGB Auxiliary Supply Voltage VAUX Logic High Input Voltage (Note) VIH Logic Low Input Voltage (Note) VIL RGB Input Voltage HSYNC, VSYNC VI DDC_CLK, DDC_DATA High Level Output Current (Note 1) IOH Low Level Output Current (Note 1) IOL Free−Air Operating Temperature TA Note: These parameters apply only to the HSYNC and VSYNC signals. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 4.5 1.7 2.9 2.0 0 0 0 0 TYP MAX 5.5 3.7 3.7 0.8 VRGB VAUX VCC -8 8 +70 UNIT V V V V V V V V mA mA °C 4 of 6 QW-R223-021.a CCVGA7C5 Preliminary TVS ELECTRICAL CHARACTERISTICS (Note 1) PARAMETER Diode Forward Voltage Logic High Output Voltage Logic Low Output Voltage R, G and B Pins HSYNC, VSYNC Input Pins Current HSYNC, VSYNC Pins SYMBOL TEST CONDITIONS VF IF=10mA VOH IOH=-4mA, VCC=4.5V VOL IOL=4mA, VCC=4.5V VRGB=3.63V, VIN=VRGB or GND IIN ICC VRGB supply Current IRGB TYP 0.4 ±1 UNIT V V V μA VCC=5.5V, VAUX=VRGB=2.97V, All Inputs and Outputs Floating R, G and B Pins at VCC r GND, All Inputs and Outputs Floating MAX 1.0 ±1 μA -72.5 -95.0 μA 35 100 μA 10 μA 4.0 VAUX=3.63V, VIN=VAUX VAUX=3.63V, VIN=GND VCC upply Current MIN -30.0 R, G and B pins 5 pF HSYNC, 10 pF Input CIN VSYNC pins Note 2 Applies for All Cases Capacitance DDC_DATA, 5 pF DDC_CLK pins Pull−up Resistance RPU 1.52 1.80 1.98 kΩ DDC_DATA, DDC_CLK pins ESD Withstand Voltage VESD VCC=5 V, VRGB=3.3V, VAUX=3.3 V ±8 kV SYNC Buffer L≥H Propagation tPLH CL=50pF, VCC=5.0V, RL=500Ω (Note 3) 7.0 15.0 ns Delay SYNC Buffer H≥L Propagation tPHL CL=50pF, VCC=5.0V, RL=500Ω (Note 3) 7.0 15.0 ns Delay SYNC Buffer Output Rise & tR, tF CL=50pF, VCC=5.0V, RL=500Ω (Note 3) 7.0 ns Fall Times Notes: 1. All parameters specified over standard operating conditions unless otherwise noted. 2. Measured at 1MHz. R/G/B inputs biased at 1.65V with VRGB=3.3V. DDC_CLK and DDC_DATA biased at 2.5V with VCC=5V. HSYNC and VSYNC inputs biased at VAUX or GND with VAUX=3.3V and VCC=5V. 3. Applicable to the SYNC buffers only. Input signals swing between 0V and 3.0V, with rise and fall times ≤5 ns. Guaranteed by correlation to buffer output drive currents. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R223-021.a CCVGA7C5 TVS TYPICAL APPLICATION CIRCUIT To Video DAC VDD 0.2µF Video Controller 4 VRGB H-Sync V-Sync DDC_Data DDC_Clk Red Green Blue VF** VF** VF** 5V 3.3V 0.2µF 9, 16 VCC 13 VAUX 2 8 HSYNC GNDA 14 3, 11 VSYNC GNDD 10 DDC_DATA 12 DDC_CLK Digital Analog UTC GND GND CCVGA7C5 1 HSYNC_OUT VSYNC_OUT 15 SF** 7 R 6 G 5 B SF** Video Connector Preliminary H-Sync V-Sync DDC_Data DDC_Clk Red Green Blue VF** − VIDEO EMI Filter SF** − SYNC EMI Filter GNDA, the negative voltage rail for the R, G and B diodes is not connected internally to GNDD. GNDA should ideally be connected to the ground of the video DAC IC. This will prevent any ground bounce caused by digital signals from injecting noise onto the R, G and B signals. Analog GND and digital GND are typically connected on the printed circuit board. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R223-021.a