GX4201 Gennum Corporation, GX4201 Datasheet

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GX4201

Manufacturer Part Number
GX4201
Description
Wideband, monolithic 1x1 video crosspoint switch
Manufacturer
Gennum Corporation
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
GX4201
Manufacturer:
GENNUM
Quantity:
20 000
Part Number:
GX4201-CKA
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GENNUM
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20 000
Part Number:
GX4201CD
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GENNUM
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Part Number:
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GPS
Quantity:
5 510
FEATURES
• -3 dB bandwidth, 300 MHz with C
• off isolation at 100 MHz, 80 dB
• differential phase and gain at 4.43 MHz, 0.01 &
• 800 W disabled power consumption
• input signal levels from -2 V to +3 V
• logic input compatible with TTL and 5 V CMOS
• open collector TALLY output
FUNCTIONAL BLOCK DIAGRAM
TRUTH TABLE
ABSOLUTE MAXIMUM RATINGS
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055
0.02%
IN
EN
EN
Parameter
Supply Voltage
Operating Temperature Range
Storage Temperature Range
Lead Temperature
Analog Input Voltage
Logic Input Voltage
Output Load Current
High Level TALLY Output Current
Japan Branch: B-201 Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, Japan
0
1
PATENT PENDING
HIGH Z
OUT
IN
(Soldering, 10 Sec)
TALLY
OFF
ON
X
-65 C
-5.5 V
-0.5 V
L
0 C
= 0 pF
T
V
T
S
V
IN
A
L
Value
150 C
260 C
OUT
TALLY
7.5 V
12mA
70 C
5.5 V
5.5 V
2 mA
GX4201 Wideband, Monolithic 1x1
CIRCUIT DESCRIPTION
The GX4201 is a wideband 1x1 video crosspoint implemented
in bipolar monolithic technology. The device is characterized
by excellent differential gain and phase in the enabled
state, and very high off-isolation in the disabled state. The
fully buffered unilateral signal path ensures negligible output
to input feedback while delivering minimal output switching
transients through make-before-break switching.
For use in NxM routing matrices, the device features a very
high, nearly constant input impedance, coupled with very
high output impedance in the disabled state. This allows
multiple GX4201's to be paralleled at the input and output
without additional circuitry. An open collector PNP to V
TALLY output provides indication of crosspoint selection.
To maximize system bandwidth, an external current source
is used to bias the output device of the crosspoint. One
external current source is required per output bus. For less
demanding applications, a load resistor can be used in
place of the output current source, causing a slight increase
in differential phase. Non-additive mixing will occur on the
output bus if more than one paralleled GX4201 is enabled
at a time.
The GX4201 is one of a series of wideband video crosspoints
utilizing Gennum's proprietary LSI process.
APPLICATIONS
PIN CONNECTIONS
V
0UT
EN
V
EE
CC
• very high quality video switching
• HDTV
• computer graphics
• RF switching/routing
• PCM/data routing
8 PIN SOIC
1
4
8
5
Video Crosspoint Switch
TALLY
GND
IN
GND
tel. (03) 3247-8838 fax (03) 3247-8839
TOP VIEW
OUT
V
V
EN
CC
EE
Document No. 510 - 74 - 5
PIN 1
4
8 PIN DIP
DATA SHEET
5
8
TALLY
IN
GND
GND
CC

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GX4201 Summary of contents

Page 1

... Non-additive mixing will occur on the OUT output bus if more than one paralleled GX4201 is enabled at a time. The GX4201 is one of a series of wideband video crosspoints utilizing Gennum's proprietary LSI process. APPLICATIONS • very high quality video switching • HDTV • ...

Page 2

... Control input to disappearance OFF of signal at output BIAS(EN 1mA OH O I.L. 1V p-p sine or sq.wave,T at 100 kHz R =100K B.W. small signal OUT OUT dg at 3.58 MHz IRE IN Enabled GX4201 on output ƒ = 100 MHz p-p IN + TEMPERATURE RANGE MIN TYP MAX 4.5 5 5 140 - 12 140 - - ...

Page 3

... TYPICAL PERFORMANCE CURVES OF THE GX4201 For all graphs and T S Gain (dB Load Capacitance Frequency (MHz) Fig. 1 Gain vs Frequency Gain (dB) 0.1 0.05 0 -0.05 -0.1 External Series Resistance = 30 -0. -0.2 -0.25 -0.3 -0.35 -0 Frequency (MHz) Fig. 3 Gain vs Frequency = 25 C. The curves shown below represent typical batch sampled results. ...

Page 4

Input Cap. (pF) 1.8 1.7 1 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0 Frequency (MHz) Fig Frequency IN Diff. Gain Diff. Phase +0. IRE at 4.43 MHz +0.04 IN ...

Page 5

V +5 CTRL 74LS02 Fig. 11a Switching Transient Test Circuit OFF DEVICE ...

Page 6

... Fig. 13 Application Circuit Matrix using Four GX4201 NOTES All decoupling capacitors are 0 6mA can be implemented by the following circuit. 6 Choose a transistor with ß / ƒ ƒ Alternatively, an 820 The insertion loss will be increased to 0.1 dB. © Copyright AUG.1989 Gennum Corporation Repeat for Each ...

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