Gennum GX4314-CKB Wideband, monolithic 4x1 video multiplexer Datasheet

GX4314 Wideband, Monolithic
4x1 Video Multiplexer
DATA SHEET
FEATURES
CIRCUIT DESCRIPTION
• low differential phase and gain
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.
• wide bandwidth, 100 MHz at -1 dB (Flattened)
• small switching transient
• ±4.5 to ± 11 volts supplies
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.
FUNCTIONAL BLOCK DIAGRAM
IN 0
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
IN 1
X
OUTPUT
X
IN 2
IN 3
X
2 TO 4 DECODER
LOGIC
CHIP
SELECT
A1
A0
CS
GX4314
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
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
X = DON'T CARE
ORDERING INFORMATION
Part Number
Package Type
Temperature Range
GX4314 - CDB
14 pin PDIP
0 to 70oC
GX4314 - CKB
14 pin SOIC
0 to 70oC
AVAILABLE PACKAGING
14 pin PDIP
14 pin SOIC
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
Document No. 13422 - 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
ABSOLUTE MAXIMUM RATINGS
PIN CONNECTIONS
Parameter
Supply Voltage
± 13.5V
0°C £ TA £ 70° C
Operating Temperature Range
Storage Temperature Range
Analog Input Voltage
Supply Voltage
DYNAMIC
Supply Current
CS
260° C
GND
NC
IN 3
VEE
OUT
14 PIN DIP &
14 PIN NARROW
SOIC
SYMBOL
CONDITIONS
MIN
TYP
MAX
± 4.5
-
± 11
UNITS
± VS
Operating Range
I
CS = 0
-
22
25
mA
I-
CS = 0
-
22
25
mA
I+
CS = 1
-
270
350
mA
I
CS = 1
-
350
600
mA
-2.4
-
2.6
V
-
11
-
mA
7
14
21
mV
-
160
-
-
200
400
ns
0.6
1.2
-
ms
2.0
-
-
0.8
V
V
-
-
4
mA
0.025
0.038
0.050
dB
+
-
VOUT
Analog Input Bias Current
I BIAS
Output Offset Voltage
VOS
Output Offset Voltage Drift
DVOS
Chip Enable Time
t ON
Enable input to appearance of signal
Chip Disable Time
t OFF
Logic Input Thresholds
VIH
VIL
Enable input to disappearance
of signal at output.
1
0
Logic Input Current
IL
Insertion Loss
I.L.
1V p-p sine or sq. wave at 100 kHz
Bandwidth (-3dB)
B.W.
small signal C L = 0 pF
-
300
-
MHz
Input Resistance
RIN
CS = 0, crosspoint on
0.5
-
-
MW
Input Capacitance
CIN
CS = 0, crosspoint on
-
1.4
-
pF
Output Resistance
ROUT
CS = 0, crosspoint on
-
6
-
W
Output Capacitance
COUT
CS = 1, chip disabled
-
2.6
-
pF
Differential Gain
dg
ƒ = 3.58 MHz, VIN = 40 IRE
-
-
0.03
%
Differential Phase
dp
ƒ = 3.58 MHz, VIN = 40 IRE
-
-
0.02
deg
All Hostile Crosstalk
XTLKAH
1Vp-p on 3 inputs 4 th input
has 10W resistor to gnd ƒ=30 MHz
-
70
-
dB
Chip Disabled Crosstalk
XTLKCD
Enabled device on O/P ƒ=100 MHz
-
80
-
dB
Slew Rate
+SR
-SR
VIN = 1V p-p (CL = 10 pF)
VIN =1V p-p (CL = 10 pF)
1000
440
1500
660
-
V/ms
V/ms
-
-
± 0.05
dB
-
-
± 0.15
deg
-
-
± 0.25
deg
Crosspoint Scatter
Extremes before clipping occurs
V
Analog Output Voltage Swing
Gain Spread at 30 MHz
TA = 25°C
DAV
o
R = 75 W
S
T A = 25 C
ƒ = 3.58 MHz
13422 - 5
A1
GND
(VS = ± 8V DC, 0°C £ TA £ 70°C, R L = 10kW, C L = 30 pF, unless otherwise shown.)
PARAMETER
LOGIC
A0
IN 1
-0.5V £ VL £ +5.5V
Logic Input Voltage
STATIC
VCC
IN 2
(VEE - 1.4) or -7.5<VA< (Vcc+ 0.3)
or ( V EE+ 15) V
ELECTRICAL CHARACTERISTICS
IN 0
GND
-65°C £ TS £ 150° C
Lead Temperature (Soldering, 10 Sec)
DC
SUPPLY
GX4314
Value
2
o
o
0 C<TA<70 C
mV/°C
TYPICAL PERFORMANCE CURVES FOR GX4314
0.1
-20
0
GAIN (dB)
ISOLATION & XTALK (dB)
RS = 30 W
-0.2
CL = 27 pF
-0.4
-0.6
-0.8
-1.0
11
-60
RIN=75W
CHIP OFF ISOLATION
RL=10W
-100
11
10
FREQUENCY (MHz)
3
2
SW0, SW3
ENABLED
2.8
VS = ±4.5V
CAPACITANCE (pF)
CAPACITANCE (pF)
1.8
1.6
1.4
SW1, SW2
ENABLED
1.2
2.6
V = ±8V
S
2.4
VS = ±11V
2.2
CL = 0 pF
1
1
10
FREQUENCY (MHz)
100
2
200
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
BIAS VOLTAGE (V)
Fig. 3 Input Capacitance
Fig. 4 Output Capacitance
0.030
15
SUPPLY VOLTAGE (V)
0.025
dg ( % ), dp ( deg )
100 100
Fig. 2 All Hostile Crosstalk & Isolation
Fig. 1 Flattened Frequency Response
0.020
dg
0.015
0.010
dp
0.005
0
RIN=10W
-80
-120
100100
10
FREQUENCY (MHz)
-40
1
3
5
FREQUENCY (MHz)
14 pin PDIP
12
14 pin
150 mil SOIC
9
16 pin
300 mil SOIC
6
3
0
10
0
20
40
60
80
100
120
AMBIENT TEMPERATURE ( °C)
Fig. 5 Differential Gain & Phase
Fig. 6 Safe Operating Area for GX4314
(All packages)
NOTE: Curves are based on 25 mA max. supply current
and 130°C max. junction temperature.
3
13422
-5
+5V
0.1
VIDEO IN 0
1
75
14
2
13
A0
12
A1
VIDEO IN 1
3
75
4
CS
11
GX4314
VIDEO IN 2
5
75
4
10
6
8
VIDEO
OUT
5
NC
9
1
CLC110
10k
VIDEO IN 3
8
7
75
0.1
-5V
Fig. 7 Test Circuit
GX4314 SWITCHES
VIDEO INPUTS
1 IN 0
V0
2
3
4
5
6
7
V1
V2
V3
75
IN 3
14
+V
13
A0
A 1 12
CS 11
10
OUT
9
NC
-V 8
A0
A1
4
0.1
75
75
GND
IN 1
GND
IN 2
GND
BINARY ADDRESS
DECODER
+8V
0.1
75
0.1
-8V
5
+8V
6
3
1
A2
2
2
74HC139
A3
1
ENABLE
7
1 IN 0
GND
IN 1
V4
2
3
4
5
6
7
V5
V6
V7
75
75
75
GND
IN 2
GND
IN 3
+V 14
A 0 13
A 1 12
11
CS
10
OUT
330
0.1
-8V
0.1
1 IN 0
GND
2
3
4
5
6
7
V9
V 10
V 11
75
75
75
IN 1
GND
IN 2
GND
IN 3
100
75
V14
V15
75
-
4
0.1
6
VIDEO
75 OUTPUT
250
-5V
-8V
-CLC 410 (comlinear)
+8V
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.
0.1
75
-8V
PRELIMINARY DATA SHEET
The product is in a preproduction phase and
specifications are subject to change without notice.
Fig. 8 16 x 1 Video Multiplexer Circuit
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 July1991 Gennum Corporation. Revision Date: December 1993.
All rights reserved.
13422 - 5
7
0.1
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
V 13
2
+
300
500
1
75
+5V
3
14
+V
13
A0
A 1 12
CS 11
10
OUT
9
NC
-V 8
0.1
75
2-10pF
+8V
0.1
V 12
+5V
0.1
NC 9
-V 8
75
V8
16
8
4
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