GX4201-CTA [GENNUM]
Wideband, Monolithic 1x1 Video Crosspoint Switch; 宽带，单片的1x1视频交叉点开关
| 型号： | GX4201-CTA |
| 厂家： | 
GENNUM CORPORATION |
| 描述： | Wideband, Monolithic 1x1 Video Crosspoint Switch |
| 文件： | 总6页 (文件大小：159K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GX4201 Wideband, Monolithic 1x1
Video Crosspoint Switch
DATA SHEET
FEATURES
CIRCUIT DESCRIPTION
TheGX4201isawideband1x1videocrosspointimplemented
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.
• -3 dB bandwidth, 300 MHz with CL = 0 pF
• off isolation at 100 MHz, 80 dB
• differential phase and gain at 4.43 MHz, 0.01° &
0.02%
• 800 µW 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
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 VCC
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.
FUNCTIONAL BLOCK DIAGRAM
TALLY
X
OUT
IN
The GX4201 is one of a series of wideband video crosspoints
utilizing Gennum's proprietary LSI process.
EN
PATENT PENDING
TRUTH TABLE
APPLICATIONS
• very high quality video switching
• HDTV
• computer graphics
• RF switching/routing
• PCM/data routing
EN
0
OUT
HIGH Z
IN
TALLY
OFF
1
ON
ABSOLUTE MAXIMUM RATINGS
Parameter
Value
±7.5 V
PIN CONNECTIONS
Supply Voltage
TOP VIEW
Operating Temperature Range
0° C ≤ TA ≤ 70° C
Storage Temperature Range
-65° C ≤ TS ≤ 150° C
8
PIN 1
GND
EN
Lead Temperature (Soldering, 10 Sec)
260° C
EN
VEE
GND
IN
1
4
8
IN
VEE
VCC
Analog Input Voltage
-5.5 V ≤ V ≤ 5.5 V
GND
TALLY
IN
VCC
0UT
GND
TALLY
5
5
Logic Input Voltage
-0.5 V ≤ VL ≤ 5.5 V
12mA
OUT
4
Output Load Current
8 PIN SOIC
8 PIN DIP
High Level TALLY Output Current
2 mA
Document No. 510 - 74 - 5
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055
Japan Branch: B-201 Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, Japan
tel. (03) 3247-8838 fax (03) 3247-8839
ELECTRICAL CHARACTERISTICS (VS = ±5V DC, 0°C < TA < 70°C, IL = 6 mA)
PARAMETER
Supply Voltage
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
±VS
I+
±4.5
±5
13.5
80
±5.5
17
V
DC
EN=1
EN=0
EN=1
EN=0
-
-
-
-
mA
µA
mA
µA
SUPPLY
Supply Current
140
16
(not including external
current load)
I-
12.5
80
140
Analog Output
Voltage Swing
VOUT
IBIAS
VOS
Extremes before clipping
occurs
-2
-
3
V
STATIC
Analog Input Bias
Current
-
12
-
-
µA
Output Offset Voltage
TA = 25°C
-10
10
mV
Output Offset Voltage
Drift-
∆VOS / ∆T
tON
-
-
-25
200
1.0
-80
400
-
µV/°C
ns
Crosspoint
Control input to appearance
of signal at output.
Turn-On Time
LOGIC
Crosspoint
tOFF
Control input to disappearance
of signal at output.
0.5
µs
Turn-Off Time
Logic Input
Thresholds
VIH
1
2.0
-
-
-
0.8
2
V
V
VIL
0
-
-
Enable
IBIAS(EN)
EN = 0
0.3
µA
Bias Current
TALLY Output
Insertion Loss
VOH
I.L.
EN = 1, IO = 1mA
4.80
4.89
4.93
V
o
1V p-p sine or sq.wave,T =25 C
at 100 kHz RL=100K, CL=30pF
A
0.015
-
0.025
300
0.040
-
dB
Bandwidth (-3dB)
See Fig. 1
Input Resistance
B.W.
RIN
small signal CL = 0 pF
MHz
EN = 1
EN = 0
1.0
3.0
1.1
7
-
MΩ
pF
DYNAMIC Input Capacitance
Output Resistance
CIN
-
-
-
-
-
-
-
ROUT
COUT
dg
EN = 1
-
-
Ω
Output Capacitance
See Fig. 5
Differential Gain
EN = 0
1.1
-
pF
at 3.58 MHz
VIN = 40 IRE
0.04
0.04
-
%
Differential Phase
See Fig. 6
dp
-
degrees
dB
Off Isolation
See Fig. 4
Enabled GX4201 on output
ƒ = 100 MHz VIN = 1V p-p
80
Slew Rate
+SR
-SR
250
250
400
350
-
-
VIN = 3V p-p (CL = 0 pF)
V/µs
ORDERING INFORMATION
PART NUMBER
GX4201-CKA
GX4201-CDA
GX4201-CTA
PACKAGE TYPE
8 PIN SOIC
TEMPERATURE RANGE
0° to 70°C
8 PIN DIP
0° to 70°C
8 PIN SOIC TAPE
0° to 70°C
2
510 - 74 - 5
TYPICAL PERFORMANCE CURVES OF THE GX4201
For all graphs, VS = ±5 V DC and TA = 25°C. The curves shown below represent typical batch sampled results.
Phase
Gain (dB)
(degrees)
24
21
18
15
12
9
0
-0.3
-0.6
-0.9
-1.2
-1.5
-1.8
-2.1
-2.4
-2.7
Load Capacitance
10 pF
10 pF
22 pF
47 pF
82 pF
22 pF
47 pF
6
3
82 pF
0
-3
-6
-3.0
1
2
3
4
5
6
7
8
9
10
1
10
100
1K
Frequency (MHz)
Frequency (MHz)
Fig. 1 Gain vs Frequency
Fig. 2 Phase vs Frequency
Off
Gain (dB)
0.1
Isolation (dB)
120
0.05
0
VIN = 1V p-p
110
100
90
-0.05
-0.1
RL = 10Ω
External Series Resistance = 30 Ω
CL = 33 pF
-0.15
-0.2
Load = 1 xpt on O/P to GND
(See test circuits)
-0.25
-0.3
80
-0.35
-0.4
1
70
10
20
30
50
80 100
10
100
1K
Frequency (MHz)
Frequency (MHz)
Fig. 3 Gain vs Frequency
Fig. 4 Off Isolation vs Frequency
continued over
3
510 - 74 - 5
Input
Cap. (pF)
Disabled
O/P Cap. (pF)
1.4
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
EN = 1
1.3
1.2
1.1
1.0
CL = 30 pF
EN = 0
0.8
1
-2 .0
-1.5
-1.0
-0.5
0
+0.5
+1.0
+1.5
+2.0
10
100
1K
Output Bias (V)
Frequency (MHz)
Fig. 6 COUT vs Bias
Fig. 5 CIN vs Frequency
Diff. Gain
Diff. Phase
Diff. Gain
Diff. Phase
+0.05
+0.05
+0.04
+0.03
+0.02
+0.01
VIN = 40 IRE at 4.43 MHz
+0.04
+0.03
+0.02
+0.01
0
V
LUM = VBLANK + 0.714 V
VIN = 40 IRE at 4.43 MHz
LUM = VBLANK + 0.714 V
Blanking Level 0 V DC
Blanking Level is clamped to VBIAS
V
dg %
R
= 10 kΩ
L
dp °
dg %
-0.01
-0.01
-0.03
-0.04
RL = 10 K
dp °
-0.05
-1.6
-1.2
-0.8
-0.4
0
+0.4
+0.8
0
1
2
3
4
5
6
7
8
9 10
Input Bias (V)
Frequency (MHz)
Fig. 7 dg/dp vs Input Bias
Fig. 8 dg/dp vs Frequency
Diff. Gain
Diff. Phase
-0.18
-0.16
-0.14
-0.12
-0.10
-0.08
-0.06
-0.04
-0.02
0
ƒ = 4.43 MHz, 40 IRE
Blanking Level 0V DC
dg %
dp °
dp °
dg %
+0.02
100
1K
10K
RL (Ω)
Fig. 9 dg/dp vs RL
4
510 - 74 - 5
1
8
-5.5 V
+5.5 V
2
3
7
6
5
5.5 K
470
+
10
4
10
+
Fig. 10 Burn-in Test Circuit
1
8
-5 V
2
3
4
7
6
+5 V
VCRTL
200 mV/div
5
+
10
10
+
V
OUT
V
CTRL
1
8
10pF
6mA
7
VOUT
2
3
6
5
10 mV/div
-5 V
4
74LS02
1 µs/div
Fig. 11a Switching Transient Test Circuit
Fig. 11b Switching Transient
OFF DEVICE
1
2
8
7
6
5
-5 V
INPUT
1
2
3
4
8
+5 V
3
4
-5 V
+5 V
INPUT
7
0.1
0.1
6
OUTPUT
5
ON DEVICE
IL
1K
0.1
0.1
1
8
7
6
5
OUTPUT
1K
2 x BFR96
IL
2
3
4
LOAD
180
10
2 x BFR96
ADJUST FOR
180
IL
=
6mA
0.1
0.1
180
0.1
ADJUST FOR
180
-5 V
IL
= 6mA
NOTE: Off-isolation can be increased by eliminating the signal path
through the power supplies. This is demonstrated by replacing the
enabled crosspoint with a 10Ω load resistor as shown in the passive
load circuit.
0.1
-5 V
Active Load
Passive Load
Fig. 12 Off-isolation Test Circuits
All capacitors in farads, all resistors in ohms unless otherwise stated.
5
510 - 74 - 5
+5 V
EN BA
EN AA
1
2
8
7
1
2
8
7
Repeat for Each
Crosspoint TALLY
Output
6
5
3
4
NOTE 1
3
4
6
5
*
4.7 K
OUT A
EN BB
EN AB
6mA
NOTE 2
1
2
8
1
2
8
7
7
-5 V
3
4
6
5
3
4
6
5
OUT B
IN B
IN A
-
+
6mA
NOTE 2
-
+
5 V
5 V
-5 V
Fig. 13 Application Circuit
All capacitors in µF, all resistors in Ω
unless otherwise shown.
2 x 2 Matrix using Four GX4201
I C
NOTES: 1.
2.
* All decoupling capacitors are 0.1 µF, 50 V.
R
1.8 K
680
100
6mA can be implemented by the following circuit.
Choose a transistor with ß / ƒ at 6 mA
T
0.1
ƒ is ≥ 800MHz.
T
-5 V
3.
Alternatively, an 820Ω resistor may be used.
The insertion loss will be increased to 0.1 dB.
AVAILABLE PACKAGING
8 pin DIP
8 pin SOIC
8 pin SOIC - TAPE
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
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.
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 AUG.1989 Gennum Corporation.
Revision Date: January 1993. All rights reserved. Printed in Canada.
6
510 - 74 - 5
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