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| GX4314 Wideband, Monolithic 4x1 Video Multiplexer DATA SHEET FEATURES * low differential phase and gain * wide bandwidth, 100 MHz at -1 dB (Flattened) * small switching transient * 4.5 to 11 volts supplies CIRCUIT DESCRIPTION The GX4314 is a wideband video multiplexer implemented in bipolar technology. This device is characterized by excellent differential phase and gain in the enabled state, very high off-isolation in the disabled state and fully buffered unilateral signal path. Make-before-break switching assures virtually glitch-free switching. For use in NxM routing matrices, the GX4314 features a very high, nearly constant input impedance coupled with high output impedance in the disabled state. This allows multiple devices to be paralleled at the inputs and outputs without additional circuitry. Logic inputs are TTL and 5V CMOS compatible, providing address and chip select functions. The operation of the devices is described in the Truth Table below. X X X X FUNCTIONAL BLOCK DIAGRAM IN 0 IN 1 IN 2 IN 3 X OUTPUT The wideband GX4314 is pin for pin compatible with the high performance GX414, extending the flat frequency response characteristics from 50 to 100 MHz. APPLICATIONS * HDTV * Very high quality video switching * Very high density video switching * Computer graphics * PCM / data routing 2 TO 4 DECODER LOGIC CHIP SELECT A0 A1 CS GX4314 TRUTH TABLE CS A1 A0 0 0 0 0 1 0 0 1 1 X 0 1 0 1 X OUTPUT IN 0 IN 1 IN 2 IN 3 HI - Z ORDERING INFORMATION Part Number GX4314 - CDB GX4314 - CKB Package Type 14 pin PDIP 14 pin SOIC Temperature Range 0 to 70oC 0 to 70oC X = DON'T CARE AVAILABLE PACKAGING 14 pin PDIP 14 pin SOIC ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION CAUTION Document No. 13422 - 5 GENNUM CORPORATION P Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055 .O. Japan Branch: B-201 Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3247-8838 fax (03) 3247-8839 ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 Sec) Analog Input Voltage Logic Input Voltage Value PIN CONNECTIONS GX4314 IN 0 VCC A0 A1 CS OUT NC VEE GND IN 1 GND IN 2 GND IN 3 13.5V 0C TA 70 C -65C TS 150 C 260 C (VEE - 1.4) or -7.5 ELECTRICAL CHARACTERISTICS PARAMETER Supply Voltage DC SUPPLY Supply Current (VS = 8V DC, 0C TA 70C, R L = 10kW, C L = 30 pF, unless otherwise shown.) SYMBOL VS I + CONDITIONS Operating Range CS = 0 CS = 0 CS = 1 CS = 1 Extremes before clipping occurs MIN 4.5 -2.4 - TYP 22 22 270 350 11 14 160 200 1.2 0.038 300 1.4 6 2.6 70 80 1500 660 - MAX 11 25 25 350 600 2.6 21 400 0.8 4 0.050 0.03 0.02 0.05 0.15 0.25 UNITS V mA mA mA mA V mA mV mV/C ns ms V V mA dB MHz MW pF W pF % deg dB dB V/ms V/ms dB deg deg II+ I - Analog Output Voltage Swing STATIC Analog Input Bias Current Output Offset Voltage Output Offset Voltage Drift Chip Enable Time LOGIC Chip Disable Time Logic Input Thresholds Logic Input Current Insertion Loss Bandwidth (-3dB) DYNAMIC Input Resistance Input Capacitance Output Resistance Output Capacitance Differential Gain Differential Phase All Hostile Crosstalk Chip Disabled Crosstalk Slew Rate Gain Spread at 30 MHz Crosspoint Scatter VOUT I BIAS VOS DVOS t ON t OFF VIH VIL IL I.L. B.W. RIN CIN ROUT COUT dg dp XTLKAH XTLKCD +SR -SR DAV TA = 25C Enable input to appearance of signal Enable input to disappearance of signal at output. 1 0 7 0.6 2.0 - 1V p-p sine or sq. wave at 100 kHz small signal C L = 0 pF CS = 0, crosspoint on CS = 0, crosspoint on CS = 0, crosspoint on CS = 1, chip disabled = 3.58 MHz, VIN = 40 IRE = 3.58 MHz, VIN = 40 IRE 1Vp-p on 3 inputs 4 th input has 10W resistor to gnd =30 MHz Enabled device on O/P =100 MHz VIN = 1V p-p (CL = 10 pF) VIN =1V p-p (CL = 10 pF) R = 75 W S = 3.58 MHz T A = 25 C 0 C 0.025 0.5 1000 440 - 13422 - 5 2 TYPICAL PERFORMANCE CURVES FOR GX4314 0.1 0 -0.2 GAIN (dB) -0.4 -0.6 -0.8 -1.0 ISOLATION & XTALK (dB) RS = 30 W CL = 27 pF -40 -60 RIN=75W -80 -100 -120 RIN=10W -20 CHIP OFF ISOLATION RL=10W 1 1 10 FREQUENCY (MHz) 1 1 10 FREQUENCY (MHz) 100 100 100 100 Fig. 1 Flattened Frequency Response Fig. 2 All Hostile Crosstalk & Isolation 2 1.8 CAPACITANCE (pF) 1.6 1.4 1.2 1 1 SW1, SW2 ENABLED CL = 0 pF 10 FREQUENCY (MHz) 100 200 SW0, SW3 ENABLED CAPACITANCE (pF) 3 2.8 VS = 4.5V 2.6 V = 8V 2.4 S VS = 11V 2.2 2 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 BIAS VOLTAGE (V) Fig. 3 Input Capacitance Fig. 4 Output Capacitance 15 14 pin PDIP 14 pin 150 mil SOIC 16 pin 300 mil SOIC 0.030 0.025 0.020 0.015 0.010 0.005 0 dp dg SUPPLY VOLTAGE (V) 10 dg ( % ), dp ( deg ) 12 9 6 3 1 3 5 FREQUENCY (MHz) 0 0 20 40 60 80 100 120 AMBIENT TEMPERATURE ( C) Fig. 5 Differential Gain & Phase NOTE: Curves are based on 25 mA max. supply current and 130C max. junction temperature. Fig. 6 Safe Operating Area for GX4314 (All packages) 3 13422 - 5 +5V VIDEO IN 0 1 75 VIDEO IN 1 3 75 VIDEO IN 2 5 75 VIDEO IN 3 7 75 -5V 8 6 4 12 11 2 14 13 0.1 A0 A1 CS 4 NC 1 CLC110 5 10k 8 VIDEO OUT GX4314 10 9 0.1 Fig. 7 Test Circuit VIDEO INPUTS GX4314 SWITCHES 0.1 V0 V1 V2 V3 75 75 75 75 0.1 V4 V5 V6 V7 75 75 75 75 0.1 V8 V9 V 10 V 11 75 75 75 75 0.1 V 12 V 13 V14 V15 75 75 75 75 -8V 14 IN 0 +V 13 2 GND A 0 12 3 A1 IN 1 11 4 GND CS 10 5 IN 2 OUT 9 6 GND NC 8 7 -V IN 3 1 0.1 1 IN 0 GND IN 1 GND IN 2 GND IN 3 0.1 -8V +8V 14 +V 13 A0 A 1 12 CS 11 10 OUT 9 NC -V 8 1 IN 0 GND IN 1 GND IN 2 GND IN 3 0.1 -8V +8V +V 14 A 0 13 A 1 12 11 CS 10 OUT NC 9 -V 8 1 IN 0 GND IN 1 GND IN 2 GND IN 3 0.1 -8V +8V 14 +V 13 A0 A 1 12 CS 11 10 OUT 9 NC -V 8 4 5 6 7 2 3 4 5 6 7 8 16 1 2 +8V BINARY ADDRESS DECODER A0 A1 2 3 4 5 6 7 3 2 1 A2 A3 ENABLE 74HC139 +5V 0.1 330 2-10pF +5V 3 100 300 500 2 3 4 5 6 7 + - 7 4 0.1 6 250 VIDEO 75 OUTPUT 2 0.1 -5V -CLC 410 (comlinear) All resistors in ohms, all capacitors in microfarads unless otherwise stated. DOCUMENT IDENTIFICATION PRODUCT PROPOSAL This data has been compiled for market investigation purposes only, and does not constitute an offer for sale. ADVANCE INFORMATION NOTE This product is in development phase and specifications are subject to change without notice. Gennum reserves the right to remove the product at any time. Listing the product does not constitute an offer for sale. PRELIMINARY DATA SHEET The product is in a preproduction phase and specifications are subject to change without notice. DATA SHEET The product is in production. Gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. Fig. 8 16 x 1 Video Multiplexer Circuit Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. (c) Copyright July1991 Gennum Corporation. Revision Date: December 1993. All rights reserved. 13422 - 5 4 |
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