1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
Intersil Corporation 1999
HA4201
480MHz, 1 x 1 Video Crosspoint
Switch with Tally Output
The HA4201 is a very wide bandwidth 1 x 1 crosspoint
switch ideal for professional video switching, HDTV,
computer monitor routing, and other high performance
applications. The circuit features very low power dissipation
(105mW Enabled, 1mW Disabled), excellent differential gain
and phase, and very high off isolation. When disabled, the
output is switched to a high impedance state, making the
HA4201 ideal for routing matrix equipment.
The HA4201 requires no external current source, and
features fast switching and symmetric slew rates. The tally
output is an open collector PNP transistor to V
CC
, and is
activated whenever EN = 1 to provide an indication of
crosspoint selection.
For applications which don't require a Tally output, please
refer to the HA4600 data sheet.
Pinout
HA4201
(SOIC)
TOP VIEW
Features
Low Power Dissipation . . . . . . . . . . . . . . . . . . . . . 105mW
Symmetrical Slew Rates . . . . . . . . . . . . . . . . . . 1700V/
s
0.1dB Gain Flatness. . . . . . . . . . . . . . . . . . . . . . . 250MHz
Off Isolation (100MHz) . . . . . . . . . . . . . . . . . . . . . . . 85dB
Differential Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01%
Differential Phase . . . . . . . . . . . . . . . . . . . . 0.01 Degrees
High ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . >1800V
TTL Compatible Enable Input
Open Collector Tally Output
Improved Replacement for GX4201
Applications
Professional Video Switching and Routing
Video Multiplexers
HDTV
Computer Graphics
RF Switching and Routing
PCM Data Routing
Truth Table
EN
OUT
TALLY
0
High Z
Off
1
Active
On
EN
V-
V+
OUT
1
2
3
4
8
7
6
5
GND
IN
NC
TALLY
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HA4201CB
(H4201CB)
0 to 70
8 Ld SOIC
M8.15
HA4201CB96
(H4201CB)
0 to 70
8 Ld SOIC Tape
and Reel
M8.15
Data Sheet
September 1998
File Number
3680.4
2
Absolute Maximum Ratings
Thermal Information
Voltage Between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
SUPPLY
Digital Input Current (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . .
25mA
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015.7) . . . . 1800V
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 70
o
C
Thermal Resistance (Typical, Note 1)
JA
(
o
C/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
170
Maximum Junction Temperature (Die) . . . . . . . . . . . . . . . . . . . 175
o
C
Maximum Junction Temperature (Plastic Package) . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1.
JA
is measured with the component mounted on an evaluation PC board in free air.
2. If an input signal is applied before the supplies are powered up, the input current must be limited to this maximum value.
Electrical Specifications
V
SUPPLY
=
5V, R
L
= 10k
, V
EN
= 2.0V, Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
TEMP.
(
o
C)
MIN
TYP
MAX
UNITS
DC SUPPLY CHARACTERISTICS
Supply Voltage
Full
4.5
5.0
5.5
V
Supply Current (V
OUT
= 0V)
V
EN
= 2.0V
25, 70
-
10.5
13
mA
V
EN
= 2.0V
0
-
-
14.5
mA
V
EN
= 0.8V
25, 70
-
100
115
A
V
EN
= 0.8V
0
-
100
125
A
ANALOG DC CHARACTERISTICS
Output Voltage Swing without Clipping
V
OUT
= V
IN
V
IO
20mV
25, 70
2.7
2.8
-
V
0
2.4
2.5
-
V
Output Current
Full
15
20
-
mA
Input Bias Current
Full
-
30
50
A
Output Offset Voltage
25
-10
-
10
mV
Output Offset Voltage Drift (Note 3)
Full
-
25
50
V/
o
C
SWITCHING CHARACTERISTICS
Turn-On Time
25
-
160
-
ns
Turn-Off Time
25
-
320
-
ns
DIGITAL DC CHARACTERISTICS
Input Logic High Voltage
Full
2
-
-
V
Input Logic Low Voltage
Full
-
-
0.8
V
EN Input Current
V
EN
= 0 to 4V
Full
-2
-
2
A
Tally Output High Voltage
I
OH
= 1mA
Full
4.7
4.8
-
V
Tally Off Leakage Current
V
TALLY
= 0V, -5V
Full
-20
-
20
A
AC CHARACTERISTICS
Insertion Loss
1V
P-P
Full
-
0.04
0.05
dB
-3dB Bandwidth
R
S
= 82
, C
L
= 10pF
-
480
-
MHz
R
S
= 43
, C
L
= 15pF
25
-
380
-
MHz
R
S
= 36
, C
L
= 21pF
25
-
370
-
MHz
HA4201
3
AC Test Circuit
PC Board Layout
The frequency response of this circuit depends greatly on
the care taken in designing the PC board. The use of low
inductance components such as chip resistors and chip
capacitors is strongly recommended, while a solid
ground plane is a must!
Attention should be given to decoupling the power supplies.
A large value (10
F) tantalum in parallel with a small value
(0.1
F) chip capacitor works well in most cases.
Keep input and output traces as short as possible, because
trace inductance and capacitance can easily become the
performance limiting items.
Application Information
General
The HA4201 is a 1 x 1 crosspoint switch that is ideal for the
matrix element in small, high input-to-output isolation
switchers and routers. It also excels as an input buffer for
routers with a large number of outputs (i.e. each input must
connect to a large number of outputs) and delivers
performance superior to most video amplifiers at a fraction of
the cost. As an input buffer, the HA4201's low input
capacitance and high input resistance provide excellent
video terminations when used with an external 75
resistor.
This crosspoint contains no feedback or gain setting
resistors, so the output is a true high impedance load when
the IC is disabled (EN = 0).
Frequency Response
Most applications utilizing the HA4201 require a series
output resistor, R
S
, to tune the response for the specific load
capacitance, C
L
, driven. Bandwidth and slew rate degrade
as C
L
increases (as shown in the Electrical Specification
table), so give careful consideration to component
placement to minimize trace length. As an example, -3dB
bandwidth decreases to 160MHz for C
L
= 100pF, R
S
= 0
.
In big matrix configurations where C
L
is large, better
frequency response is obtained by cascading two levels of
crosspoints in the case of multiplexed outputs (see Figure 2),
or distributing the load between two drivers if C
L
is due to
bussing and subsequent stage input capacitance.
0.1dB Flat Bandwidth
R
S
= 82
, C
L
= 10pF
25
-
250
-
MHz
R
S
= 43
, C
L
= 15pF
25
-
175
-
MHz
R
S
= 36
, C
L
= 21pF
25
-
170
-
MHz
Input Resistance
Full
200
400
-
k
Input Capacitance
Full
-
1.0
-
pF
Enabled Output Resistance
Full
-
15
-
Disabled Output Capacitance
V
EN
= 0.8V
Full
-
2.0
-
pF
Differential Gain
4.43MHz, Note 3
25
-
0.01
0.02
%
Differential Phase
4.43MHz, Note 3
25
-
0.01
0.02
Degrees
Off Isolation
1V
P-P
, 100MHz, V
EN
= 0.8V, R
L
= 10
Full
-
85
-
dB
Slew Rate
(1.5V
P-P
, +SR/-SR)
R
S
= 82
, C
L
= 10pF
25
-
1750/1770
-
V/
s
R
S
= 43
, C
L
= 15pF
25
-
1460/1360
-
V/
s
R
S
= 36
, C
L
= 21pF
25
-
1410/1360
-
V/
s
Total Harmonic Distortion (Note 3)
Full
-
0.01
0.1
%
Disabled Output Resistance
Full
-
12
-
M
NOTE:
3. This parameter is not tested. The limits are guaranteed based on lab characterization, and reflect lot-to-lot variation.
Electrical Specifications
V
SUPPLY
=
5V, R
L
= 10k
, V
EN
= 2.0V, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
TEMP.
(
o
C)
MIN
TYP
MAX
UNITS
500
400
510
75
V
OUT
V
IN
75
R
S
HA4201
HFA1100
+
-
C
X
10k
NOTE: C
L
= C
X
+ Test Fixture Capacitance.
HA4201
4
Control Signals
EN - The ENABLE input is a TTL/CMOS compatible, active
high input. When driven low this input forces the output to a
true high impedance state and reduces the power
dissipation by two orders of magnitude. The EN input has no
on-chip pull-up resistor, so it must be connected to a logic
high (recommend V+) if the enable function isn't utilized.
Tally - The Tally output is an open collector PNP transistor
connected to V+. When EN = 1, the PNP transistor is enabled
and current is delivered to the load. When the crosspoint is
disabled, the Tally output presents a very high impedance to
the external circuitry. Several Tally outputs may be wire OR'd
together to generate complex control signals, as shown with the
HA4404 in the application circuits below. The Tally load may be
terminated to GND or to V- as long as the continuous output
current doesn't exceed 3mA (6mA at 50% duty cycle, etc.).
Switcher/Router Applications
Figure 1 illustrates one possible implementation of a
wideband, low power, 4 x 4 switcher/router. A 4 x 4
switcher/router allows any of the four outputs to be driven by
any one of the four inputs (e.g. each of the four inputs may
connect to a different output, or an input may connect to
multiple outputs). This application utilizes the HA4201 for the
input buffer, the HA4404 (4 x 1 crosspoint switch) as the
switch matrix, and the HFA1112 (programmable gain buffer)
as the gain of two output driver. Figure 2 details a 16 x 1
switcher (basically a 16:1 mux) which uses the HA4201 in a
cascaded stage configuration to minimize capacitive loading
at each output node, thus increasing system bandwidth.
Power Up Considerations
No signals should be applied to the analog or digital inputs
before the power supplies are activated. Latch-up may occur
if the inputs are driven at the time of power up. To prevent
latch-up, the input currents during power up must not exceed
the values listed in the Absolute Maximum Ratings.
Intersil's Crosspoint Family
Intersil offers a variety of 1 x 1 and 4 x 1 crosspoint switches.
In addition to the HA4201, the 1 x 1 family includes the
HA4600 which is an essentially similar device but without the
Tally output. The 4 x 1 family is comprised of the HA4314,
HA4404, and HA4344. The HA4314 is a 14 lead basic 4 x 1
crosspoint. The HA4404 is a 16 lead device with Tally
outputs to indicate the selected channel. The HA4344 is a
16 lead crosspoint with synchronized control lines (A0, A1,
CS). With synchronization, the control information for the
next channel switch can be loaded into the crosspoint
without affecting the current state. On a subsequent clock
edge the stored control state effects the desired channel
switch.
-
INPUT BUFFERS
SWITCH MATRIX
OUTPUT BUFFERS
(HFA1112 OR HFA1115)
OUT
SOURCE3
IN0
T0
HA4404
CS
T3
IN3
EN
OUT0
10k
75
R
S
HA4201
OUT
IN0
T0
HA4404
CS
T3
IN3
OUT
IN0
T0
HA4404
CS
T3
IN3
OUT
IN0
T0
HA4404
CS
T3
IN3
75
OUT1
75
R
S
R
S
R
S
R
S
X2
+
OUT
SOURCE0
EN
75
R
S
HA4201
OUT
SOURCE1
75
SOURCE2
75
OUT2
75
OUT3
75
10k
X2
X2
X2
-
+
-
+
-
+
FIGURE 1. 4 x 4 SWITCHER/ROUTER APPLICATION
HA4201
5
SOURCE0
75
HA4201
OUT
IN0
T0
T3
IN3
SOURCE3
75
SOURCE4
75
OUT
IN3
T0
T3
IN0
SOURCE7
75
R
S
SOURCE8
75
R
S
HA4201
OUT
IN0
T0
T3
IN3
SOURCE11
75
SOURCE12
75
R
S
OUT
IN3
T0
T3
IN0
SOURCE15
75
R
S
HA4404
75
+
-
X2
OUT
10k
10k
HA4404
R
S
R
S
SWITCHING MATRIX
OUTPUT BUFFER
ISOLATION MUX
HFA1112 OR HFA1115
IN2
IN1
IN2
IN1
IN2
IN1
IN2
IN1
EN
EN
FIGURE 2. 16 x 1 SWITCHER APPLICATION
HA4201
6
Typical Performance Curves
V
SUPPLY
=
5V, T
A
= 25
o
C, R
L
= 10k
, Unless Otherwise Specified
FIGURE 3. LARGE SIGNAL PULSE RESPONSE
FIGURE 4. INPUT CAPACITANCE vs FREQUENCY
FIGURE 5. FREQUENCY RESPONSE
FIGURE 6. GAIN FLATNESS
FIGURE 7. OFF ISOLATION
1.0
0.75
0.5
0.25
0
-0.25
-0.5
-0.75
-1.0
OUTPUT V
O
L
T
A
GE (V)
TIME (5ns/DIV.)
1
10
100
FREQUENCY (MHz)
0.75
0.80
0.85
0.90
0.95
1.0
1.05
1.10
1.15
1.20
1.25
500
INPUT CAP
A
CIT
ANCE (pF)
12
9
6
3
0
-3
-6
-9
-12
1
10
100
750
GAIN (dB)
FREQUENCY (MHz)
R
S
= 36
C
L
= 21pF
R
S
= 82
C
L
= 10pF
R
S
= 43
C
L
= 15pF
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
1
10
100
500
GAIN (dB)
FREQUENCY (MHz)
R
S
= 36
C
L
= 21pF
R
S
= 82
C
L
= 10pF
R
S
= 43
C
L
= 15pF
-50
-60
-70
-80
-90
-100
-110
-120
-130
1
10
100
500
OFF ISOLA
TION (dB)
FREQUENCY (MHz)
V
IN
= 1V
P-P
R
L
= 10
HA4201
7
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
Die Characteristics
DIE DIMENSIONS:
51 mils x 36 mils x 19 mils
1290
m x 910
m x 483
m
METALLIZATION:
Type: Metal 1: AlCu (1%)/TiW
Thickness: Metal 1: 6k
0.8k
Type: Metal 2: AlCu (1%)
Thickness: Metal 2: 16k
1.1k
PASSIVATION:
Type: Nitride
Thickness: 4k
0.5k
TRANSISTOR COUNT:
53
SUBSTRATE POTENTIAL (Powered Up):
V-
Metallization Mask Layout
HA4201
EN
V-
V+
OUT
TALLY
IN
GND
HA4201
PDF 
ZIP