GY4102A Fast Toggling Video Switch

Transcription

1 GYA Fast Toggling Video Switch DATA SHEET FEATURES ns switching time (toggle) make-before-break switching MHz at ±., bandwidth (flattened) typically. insertion loss at MHz typically. % differential gain at. MHz typically. degree differential phase at. MHz CIRCUIT DESCRIPTION The GYA is a bipolar, monolithic SPDT video switch incorporating fast control logic. The analog signal path is characterised by low differential gain, low differential phase and low insertion loss, coupled with a ±. bandwidth of typically MHz into a pf load, using an external series resistor. In demanding video applications the GYA features a typical switching glitch of less than mv over a ns period. The device offers toggle rates up to MHz. The control input is TTL and V CMOS compatible. FUNCTIONAL BLOCK DIAGRAM IN IN OUT APPLICATIONS Sub-pixel video switching Fast data sampling Modulation Special Effects video switching CTRL CONTROL LOGIC PIN CONNECTIONS TOP VIEW IN PIN CTRL ABSOLUTE MAXIMUM RATINGS GND GND V EE OUT PARAMETER VALUE IN V CC Supply Voltage Operating Temperature Range Storage Temperature Range ± 6. V C to 7 C -6 C to C PIN PDIP PIN SOIC Lead Temperature (Soldering, Sec) 6 C TRUTH TABLE Analog Input Voltage (IN, IN ) V EE <V IN <V CC +. V Control Input Voltage Range - V < V CTRL < V CC +. V CTRL OUTPUT IN IN ORDERING INFORMATION Part Number Package Type Temperature Range GYACDA pin PDIP - 7 o C AVAILABLE PACKAGING pin PDIP pin SOIC GYACKA pin SOIC - 7 o C Document No. - - GENNUM CORPORATION P.O. Box 9, Stn A, Burlington, Ontario, Canada L7R Y tel. (6) fax: (6) 6- telex: 6- Japan Branch: B- Miyamae Village, -- Miyamae, Suginami-ku, Tokyo 6, Japan tel. () 7- fax: () 7-9

2 ELECTRICAL CHARACTERISTICS (V S = ±V DC, = - 7 C, = pf, R L = kω unless otherwise shown) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage ±V S.. V DC Supply Current I+ - ma SUPPLY I- - ma Control Input Bias I CTRL Control = - µa LOGIogic Level threshold V LOGIC - - V - -. V Analog Input I BIAS Selected channel - µa Bias Current Deselected channel µa Signal Voltage Swing V SIG Extremes before clipping occurs V STATIC Output Offset Voltage V OS = C mv Output Offset Voltage V OSCH-CH = C channel to channel - mv Output Offset Drift V OS /T µv/ C Input Resistance R IN Channel On - - kω Input Capacitance C IN Channel On. - - pf Frequency Response DC - MHz R S = Ω - ±. - DYNAMIC Flatness DC - MHz R S = Ω - - ±. Insertion Loss I.L. ƒ = MHz -. - Differential Gain dg ƒ = colorburst. or. MHz -. - % Differential Phase dp ƒ = colorburst. or. MHz -. - degrees Crosstalk (all hostile) XTALK AH ƒ = MHz see fig. 7 - Slew Rate +SR 6 - V/µs -SR V IN = Vp-p = C - V/µs SWITCHING CHARACTERISTICS (V S = ±V, = - 7 C, =pf, R S = Ω, R L = kω) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Delay Time t d (on ) -. 9 ns t d (on ) V SIG = - V -. ns (see Figure 7) t d (off ) - 6 ns t d (off ) V SIG = - V -. ns Settling Time t S (on) To. IRE on to V output, (see Figure 7a) = - 9 ns (see Figure 7b) t S (off) To. IRE on to V output, = C - 7 ns Switching Transient * POS. Amplitude mv (Unfiltered) Duration - ns NEG. Amplitude mv Duration - ns * CH = CH = GND - -

3 TYPICAL PERFORMANCE CURVES FOR GYA. R S = Ω R S = Ω R L = kω = pf C = pf L -. = pf R L = kω - = pf = pf -. - Fig. GYA Frequency Response -.6 Fig. GYA Flattened Frequency Response CH- -9 CH- - - dg ( % ) dp ( deg ) dg dp Fig. GYA Crosstalk vs Frequency Fig. GYA Differential Gain & Phase An evaluation board and application note on the GYA is available. Please quote EB for the board and AN - for the application note. There is no charge for these items. - -

4 GYA TEST CIRCUITS +V. K IN- CH- 7 GYA CH- IN RS OUTPUT TO NETWORK ANALYSER VIA UNITY GAIN BUFFER -V All resistors in ohms, all capacitors in microfarads unless otherwise stated Fig. Frequency Response. +V FOR TIME DELAY TEST +V GYA 6 A* B* PULSE GENERATOR FOR TRANSIENT TEST 7 K. -V *USE ULTRA LOW CAPACITANCE SCOPE PROBES AT POINTS A & B PULSE GENERATOR CHARACTERISTICS tr t = tƒ t r ƒ ns ns Vo V= = V V o prr p rr MHz MHz All resistors in ohms, all capacitors in microfarads unless otherwise stated Fig. 6 Switching Transient / Time Delays - -

5 V Vthresh=.V Control Input V V % Output V % t d (off ) t d (on ) t d (on ) td (off ) V Settling Time V. IRE. IRE ts (on) 7A t s (off) 7B A Fig. 7 Delay Time B 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. CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEP STATIC-FREE WORKSTATION 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. Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. Copyright February 99 Gennum Corporation. Revision Date: January 99. All rights reserved. Printed in Canada. - -