MPC100AP [TI]

Wide Bandwidth 4x1 VIDEO MULTIPLEXER;
MPC100AP
型号: MPC100AP
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

Wide Bandwidth 4x1 VIDEO MULTIPLEXER

光电二极管
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中文:  中文翻译
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MPC100  
®
MPC100  
MPC100  
Wide Bandwidth  
4 x 1 VIDEO MULTIPLEXER  
The MPC100 consists of four identical monolithic inte-  
grated open-loop buffer amplifiers, which are con-  
nected internally at the output. The unidirectional trans-  
mission path consists of bipolar complementary buffers,  
which offer extremely high output-to-input isolation.  
The MPC100 multiplexer enables one of the four input  
channels to connect to the output. The output of the  
multiplexer is in a high-impedance state when no chan-  
nel is selected. When one channel is selected with a  
digital “1” at the corresponding SEL-input, the compo-  
nent acts as a buffer with high input impedance and low  
output impedance.  
FEATURES  
BANDWIDTH: 250MHz (1.4Vp-p)  
LOW INTERCHANNEL CROSSTALK:  
60dB (30MHz, DIP); 70dB (30MHz, SO)  
LOW SWITCHING TRANSIENTS:  
+2.5/–1.2mV  
LOW DIFFERENTIAL GAIN/PHASE  
ERRORS: 0.05%, 0.01°  
LOW QUIESCENT CURRENT:  
One Channel Selected: ±4.6mA  
No Channel Selected: ±230µA  
The wide bandwidth of over 250MHz at 1.4Vp-p  
signal level, high linearity and low distortion, and low  
input voltage noise of 4nV/Hz make this crosspoint  
switch suitable for RF and video applications. All  
performance is specified with ±5V supply voltage,  
which reduces power consumption in comparison with  
±15V designs. The multiplexer is available in space-  
saving SO-14 and DIP packages. Both are designed  
and specified for operation over the industrial tem-  
perature range (–40°C to +85°C.)  
APPLICATIONS  
VIDEO ROUTING AND MULTIPLEXING  
(CROSSPOINTS)  
RADAR SYSTEMS  
DATA ACQUISITION  
INFORMATION TERMINALS  
SATELLITE OR RADIO LINK IF ROUTING  
IN1  
DB1  
DESCRIPTION  
IN2  
DB2  
The MPC100 is a very wide bandwidth 4-to-1 channel  
video signal multiplexer which can be used in a wide  
variety of applications.  
VOUT  
IN3  
DB3  
IN4  
DB4  
MPC100 is designed for wide-bandwidth systems,  
including high-definition television and broadcast  
equipment. Although it is primarily used to route  
video signals, the harmonic and dynamic attributes of  
the MPC100 make it appropriate for other analog  
signal routing applications such as radar, communica-  
tions, computer graphics, and data acquisition sys-  
tems.  
SEL1 SEL2 SEL3 SEL4  
TRUTH TABLE  
SEL1  
SEL2  
SEL3  
SEL4  
VOUT  
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
HI-Z  
IN1  
IN2  
IN3  
IN4  
International Airport Industrial Park  
Mailing Address: PO Box 11400, Tucson, AZ 85734  
FAXLine: (800) 548-6133 (US/Canada Only)  
Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706  
Tel: (520) 746-1111  
Twx: 910-952-1111  
Internet: http://www.burr-brown.com/  
Cable: BBRCORP  
Telex: 066-6491  
FAX: (520) 889-1510  
Immediate Product Info: (800) 548-6132  
©1991 Burr-Brown Corporation  
PDS-1133F  
Printed in U.S.A. March, 1995  
SBFS004  
SPECIFICATIONS  
At VCC = ±5V, RL = 10k, RSOURCE = 50, and TA = +25°C, unless otherwise noted.  
MPC100AP, AU  
TYP  
PARAMETER  
CONDITIONS  
MIN  
MAX  
UNITS  
DC CHARACTERISTICS  
INPUT OFFSET VOLTAGE  
Initial  
vs Temperature  
vs Supply (Tracking)  
vs Supply (Non-tracking)  
vs Supply (Non-tracking)  
Initial Matching  
RIN = 0, RSOURCE = 0  
+10  
±30  
–80  
–50  
–50  
±3  
±30  
mV  
µV/°C  
dB  
dB  
dB  
VCC = ±4.5V to ±5.5V  
VCC = +4.5V to +5.5V  
VCC = –4.5V to –5.5V  
–40  
Between the Four Channels  
mV  
INPUT BIAS CURRENT  
Initial  
vs Temperature  
vs Supply (Tracking)  
vs Supply (Non-tracking)  
vs Supply (Non-tracking)  
+4  
20  
±380  
+1.0  
–11.0  
±10  
µA  
nA/°C  
nA/V  
µA/V  
µA/V  
VCC = ±4.5V to ±5.5V  
VCC = +4.5V to +5.5V  
VCC = –4.5V to –5.5V  
INPUT IMPEDANCE  
Resistance  
Capacitance  
Channel On  
Channel On  
Channel Off  
0.88  
1.0  
1.0  
MΩ  
pF  
pF  
Capacitance  
INPUT NOISE  
Voltage Noise Density  
Signal-to-Noise Ratio  
fB = 20kHz to 10MHz  
S/N = 0.7/VN 5MHz  
4.0  
98  
nV/Hz  
dB  
INPUT VOLTAGE RANGE  
Gain Error 10%  
±4.2  
V
TRANSFER CHARACTERISTICS  
Voltage Gain  
RL = 1k, VIN = ±2V  
RL = 10k, VIN = ±2.8V  
0.982  
0.992  
V/V  
V/V  
0.98  
CHANNEL SELECTION INPUTS  
Logic 1 Voltage  
Logic 0 Voltage  
Logic 1 Current  
Logic 0 Current  
+2.0  
0
VCC  
+0.8  
150  
5
V
V
µA  
µA  
VSEL = 5.0V  
VSEL = 0.8V  
100  
0.002  
SWITCHING CHARACTERISTICS  
SEL to Channel ON Time  
SEL to Channel OFF Time  
Switching Transient, Positive  
Switching Transient, Negative  
VI = –0.3V to +0.7V, f = 5MHz  
90% Point of VO = 1Vp-p  
10% Point of VO = 1Vp-p  
Measured While Switching  
Between Two Grounded Channels  
0.25  
0.25  
+2.5  
–1.2  
µs  
µs  
mV  
mV  
OUTPUT  
Voltage  
VIN = ±3V, RL = 5kΩ  
One Channel Selected  
No Channel Selected  
No Channel Selected  
±2.8  
±4.5  
±2.98  
11  
900  
1.5  
V
MΩ  
pF  
Resistance  
Resistance  
Capacitance  
POWER SUPPLY  
Rated Voltage  
Derated Performance  
Quiescent Current  
±5  
V
V
mA  
µA  
±5.5  
±5  
±350  
One Channel Selected  
No Channel Selected  
±4.6  
±230  
TEMPERATURE RANGE  
Operating, AP, AU  
Storage, AP, AU  
–40  
–40  
+85  
+125  
°C  
°C  
Thermal Resistance, θJA  
AP, AU  
90  
°C/W  
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes  
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change  
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant  
any BURR-BROWN product for use in life support devices and/or systems.  
®
2
MPC100  
SPECIFICATIONS  
At VCC = ±5V, RL = 10k, RSOURCE = 50, and TA = +25°C, unless otherwise noted.  
MPC100AP, AU  
TYP  
PARAMETER  
CONDITIONS  
MIN  
MAX  
UNITS  
AC CHARACTERISTICS  
FREQUENCY DOMAIN  
LARGE SIGNAL BANDWIDTH (–3dB)  
VO = 5.0Vp-p, COUT = 1pF  
VO = 2.8Vp-p, COUT = 1pF  
VO = 1.4Vp-p, COUT = 1pF  
70  
140  
250  
MHz  
MHz  
MHz  
SMALL SIGNAL BANDWIDTH  
GROUP DELAY TIME  
VO = 0.2Vp-p, COUT = 1pF  
450  
450  
MHz  
ps  
DIFFERENTIAL GAIN  
f = 4.43MHz, VIN = 0.3Vp-p  
VDC = 0 to 0.7V  
0.05  
0.06  
%
%
VDC = 0 to 1.4V  
DIFFERENTIAL PHASE  
f = 4.43MHz, VIN = 0.3Vp-p  
VDC = 0 to 0.7V  
0.01  
0.02  
Degrees  
Degrees  
VDC = 0 to 1.4V  
GAIN FLATNESS PEAKING  
VO = 0.2Vp-p, DC to 30MHz  
VO = 0.2Vp-p, DC to 100MHz  
0.04  
0.05  
dB  
dB  
HARMONIC DISTORTION  
Second Harmonic  
Third Harmonic  
f = 30MHz, VO = 1.4Vp-p, RL = 1kΩ  
–53  
–67  
dBc  
dBc  
CROSSTALK  
MPC100AP All Hostile  
VI = 1.4Vp-p, Figures 4 and 8  
f = 5MHz,  
–82  
–60  
–70  
–71  
–78  
–70  
–75  
–76  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
f = 30MHz,  
f = 5MHz,  
f = 30MHz,  
f = 5MHz,  
f = 30MHz,  
f = 5MHz,  
f = 30MHz  
Off Isolation  
MPC100AU All Hostile  
Off Isolation  
TIME DOMAIN  
RISE TIME  
VO = 1.4Vp-p, Step 10% to 90%  
COUT = 1pF, ROUT = 22Ω  
3.3  
ns  
SLEW RATE  
VO = 2Vp-p  
COUT = 1pF  
COUT = 22pF  
COUT = 47pF  
650  
460  
320  
V/µs  
V/µs  
V/µs  
®
3
MPC100  
CONNECTION DIAGRAM  
FUNCTIONAL DESCRIPTION  
Top View  
DIP/SO-14  
IN1-IN4  
GND  
Four analog input channels  
Analog input shielding grounds, connect to system ground  
SEL1 - SEL4 Channel selection inputs  
DB1  
DB2  
DB3  
IN1  
GND  
IN2  
1
2
3
4
5
6
7
14 SEL1  
13 SEL2  
12 –VCC  
11 VOUT  
10 +VCC  
VOUT  
–VCC  
+VCC  
Analog output; tracks selected channel  
Negative supply voltage; typical –5VDC  
Positive supply voltage; typical +5VDC  
GND  
IN3  
ELECTROSTATIC  
DISCHARGE SENSITIVITY  
GND  
IN4  
9
8
SEL3  
SEL4  
DB4  
Electrostatic discharge can cause damage ranging from per-  
formancedegradationtocompletedevicefailure.Burr-Brown  
Corporationrecommendsthatallintegratedcircuitsbehandled  
and stored using appropriate ESD protection methods.  
MPC100  
ESD damage can range from subtle performance degradation  
to complete device failure. Precision integrated circuits may  
be more susceptible to damage because very small parametric  
changes could cause the device not to meet published speci-  
fications.  
ABSOLUTE MAXIMUM RATINGS  
Power Supply Voltage (±VCC) .............................................................. ±6V  
Analog Input Voltage (IN1 through IN4)(1) ................................ ±VCC, ±0.7V  
Logic Input Voltage ................................................... –0.6V to +VCC +0.6V  
Operating Temperature ..................................................... –40°C to +85°C  
Storage Temperature ...................................................... –40°C to +125°C  
Output Current .................................................................................. ±6mA  
Junction Temperature .................................................................... +175°C  
Lead Temperature (soldering, 10s)................................................ +300°C  
Digital Input Voltages (SEL1 through SEL4)(1) ........... –0.5V to +VCC +0.7V  
NOTE: (1) Inputs are internally diode-clamped to ±VCC  
.
PACKAGE/ORDERING INFORMATION  
PACKAGE  
DRAWING  
NUMBER(1)  
TEMPERATURE  
PRODUCT  
RANGE  
PACKAGE  
MPC100AP  
MPC100AU  
–40°C to +85°C  
–40°C to +85°C  
14-Pin Plastic DIP  
SO-14 Surface Mount  
010  
235  
NOTE: (1) For detailed drawing and dimension table, please see end of data  
sheet, or Appendix C of Burr-Brown IC Data Book.  
®
4
MPC100  
TYPICAL PERFORMANCE CURVES  
At VCC = ±5V, RLOAD = 10k, RSOURCE = 50, and TA = +25°C, unless otherwise noted.  
OFFSET VOLTAGE vs TEMPERATURE  
5
INPUT BIAS CURRENT vs TEMPERATURE  
5
4
4
3
3
2
2
1
1
0
0
–1  
–2  
–3  
–1  
–2  
–3  
–4  
–5  
–4  
–5  
–40  
–20  
0
20  
40  
60  
80  
100  
–40  
–20  
0
20  
40  
60  
80  
100  
Temperature (°C)  
Temperature (°C)  
INPUT IMPEDANCE vs FREQUENCY  
OUTPUT IMPEDANCE vs FREQUENCY  
1.0M  
100  
30  
100k  
10k  
10  
1k  
3
1
100  
10k  
100k  
1M  
10M  
100M  
1G  
10k  
100k  
1M  
10M  
100M  
1G  
Frequency (Hz)  
Frequency (Hz)  
TOTAL QUIESCENT CURRENT vs TEMPERATURE  
One Channel Selected  
TOTAL QUIESCENT CURRENT vs TEMPERATURE  
No Channel Selected  
9
8
7
6
5
4
3
2
300  
250  
200  
150  
100  
50  
0
1
0
–40  
–20  
0
20  
40  
60  
80  
100  
–40  
–20  
0
20  
40  
60  
80  
100  
Temperature (°C)  
Temperature (°C)  
®
5
MPC100  
TYPICAL PERFORMANCE CURVES (CONT)  
At VCC = ±5V, RLOAD = 10k, RSOURCE = 50, and TA = +25°C, unless otherwise noted.  
TRANSFER FUNCTION  
INPUT VOLTAGE NOISE SPECTRAL DENSITY  
100  
10  
5
4
3
2
1
0
–1  
–2  
–3  
1
–4  
–5  
0.1  
–5  
–4  
–3  
–2  
–1  
0
1
2
3
4
5
100  
1k  
10k  
100k  
1M  
10M  
100M  
Input Voltage (V)  
Frequency (Hz)  
SWITCHING ENVELOPE (Video Signal)  
SWITCHING TRANSIENTS (Channel To Channel)  
12  
10  
8
5V  
SEL1  
+0.7V  
Without bandwidth  
limiting lowpass filter.  
6
SEL2  
4
5V  
2
0V  
0
–0.3V  
–2  
–4  
Time (µs)  
0
20  
40  
60  
80 100 120 140 160 180 200  
Time (ns)  
SMALL SIGNAL PULSE RESPONSE  
SWITCHING TRANSIENTS (Channel To Channel)  
5V  
SEL1  
36MHz Low pass filter acc.  
Eureka Rec. EU95-PG03  
in the signal path.  
SEL2  
0 —  
5V  
–4  
Time (ns)  
0
20  
40  
60  
80 100 120 140 160 180 200  
Time (ns)  
COUT = 1pF, tRISE = tFALL = 2ns  
(Generator) VI = 0.2Vp-p  
®
6
MPC100  
TYPICAL PERFORMANCE CURVES (CONT)  
At VCC = ±5VDC, RLOAD = 10k, RSOURCE = 50, and TA = +25°C, unless otherwise noted.  
SMALL SIGNAL PULSE RESPONSE  
LARGE SIGNAL PULSE RESPONSE  
0 —  
0 —  
Time (ns)  
Time (ns)  
COUT = 47pF, tRISE = tFALL = 2ns  
(Generator) VI = 0.2Vp-p  
COUT = 1pF, tRISE = tFALL = 5ns  
(Generator) VI = 5Vp-p  
LARGE SIGNAL PULSE RESPONSE  
2.5  
GROUP DELAY TIME vs FREQUENCY  
2
1.5  
1
0.5  
Group Delay Time  
0 —  
0
ROUT  
50Ω  
RI  
150Ω  
–0.5  
–1  
VI  
DUT  
Out  
VOUT  
300mVPO  
=
–1.5  
–2  
–2.5  
Time (ns)  
1M  
10M  
100M  
500M  
COUT = 47pF, tRISE = tFALL = 5ns  
Frequency (Hz)  
(Generator) VI = 5Vp-p  
BANDWIDTH vs COUT WITH RECOMMENDED ROUT  
GAIN FLATNESS  
0.5  
0.4  
20  
15  
0.3  
10  
5
0.2  
0
0.1  
1pF  
0.2Vp-p  
COUT ROUT  
f–3dB  
–5  
0
1p 0500MHz  
–10  
–15  
–20  
–0.1  
–0.2  
–0.3  
10pF  
22pF  
10p 22340MHz  
22p 15250MHz  
RIN = 150, RO1 = 1kΩ  
33p  
47p  
12215MHz  
10130MHz  
33pF  
47pF  
COUT = 22pF, ROUT = 15Ω  
–25  
dB  
–0.4  
–0.5  
1M  
10M  
100M  
1G  
300k  
1M  
10M  
100M  
1G  
Frequency (Hz)  
Frequency (Hz)  
®
7
MPC100  
TYPICAL PERFORMANCE CURVES (CONT)  
At VCC = ±5V, RLOAD = 10k, RSOURCE = 50, and TA = +25°C, unless otherwise noted.  
BANDWIDTH vs RLOAD  
BANDWIDTH vs OUTPUT VOLTAGE  
20  
15  
20  
15  
5Vp-p  
2.8Vp-p  
1.4Vp-p  
10  
10  
5
5
0
0
0.6Vp-p  
0.2Vp-p  
–5  
–5  
–10  
–15  
–20  
–10  
–15  
–20  
C
OUT = 1pF, ROUT = 0Ω  
RIN = 150Ω  
C
OUT = 22pF, ROUT = 15Ω, VO = 2.8Vp-p  
RL = 500= 1k= 10kΩ  
–25  
dB  
–25  
dB  
300k  
1M  
10M  
100M  
1G  
300k  
1M  
10M  
100M  
1G  
Frequency (Hz)  
Frequency (Hz)  
30MHz HARMONIC DISTORTION  
BANDWIDTH MATCHING (DB1...DB4)  
2.8Vp-p  
20  
15  
10  
5
0
–5  
–10  
–15  
–20  
–25  
dB  
COUT = 22pF, ROUT = 15Ω  
Frequency (Hz)  
OUT = 2.8Vp-p, RL = 1k, COUT = 1pF  
V
300k 1M  
10M  
100M  
1G  
Frequency (Hz)  
30MHz HARMONIC DISTORTION  
Frequency (Hz)  
VOUT = 2.8Vp-p, RL = 10k, COUT = 1pF  
®
8
MPC100  
emitter followers applies no feedback, so their low fre-  
quency gain is slightly less than unity and somewhat depen-  
dent on loading. Unlike devices using MOS bilateral switch-  
ing elements, the bipolar complementary buffers form an  
unidirectional transmission path and thus provide high out-  
put-to-input isolation. Switching stages compatible to TTL  
level digital signals are provided for each buffer to select the  
input channel. When no channel is selected, the output of the  
device is high-impedance and allows the user to wire more  
MPC100s together to form switch multi-channel matrices.  
APPLICATIONS INFORMATION  
The MPC100 operates from ±5V power supplies (±6V  
maximum). Do not attempt to operate with larger power  
supply voltages or permanent damage may occur. The buffer  
outputs are not current-limited or protected. If the output is  
shorted to ground, currents up to 18mA could flow. Momen-  
tary shorts to ground (a few seconds) should be avoided, but  
are unlikely to cause permanent damage.  
INPUT PROTECTION  
If one channel is selected with a digital “1” at the corre-  
sponding SEL-input, the MPC100 acts as a buffer amplifier  
with high input impedance and low output impedance. The  
truth table on the front page describes the relationship  
between the digital inputs (SEL1 to SEL4) and the analog  
inputs (IN1 to IN4), and which signal is selected at the  
output.  
All pins on the MPC100 are internally protected from ESD  
by means of a pair of back-to-back reverse-biased diodes to  
either power supply as shown in Figure 1. These diodes will  
begin to conduct when the input voltage exceeds either  
power supply by about 0.7V. This situation can occur with  
loss of the amplifier’s power supplies while a signal source  
is still present. The diodes can typically withstand a continu-  
ous current of 30mA without destruction. To insure long  
term reliability, however, diode current should be externally  
limited to 10mA or less whenever possible.  
The 2-4 address decoder and chip select logic is not  
integrated. The selected design increases the flexibility of  
address decoding in complex distribution fields, eases  
BUS-controlled channel selection, simplifies channel se-  
lection monitoring for the user, and lowers transient peaks.  
All of these characteristics make the multiplexer, in effect,  
a quad switchable high-speed buffer. It requires DC cou-  
pling and termination resistors when directly driven from  
a low impedance cable. High-current output amplifiers are  
recommended when driving low-impedance transmission  
lines or inputs.  
The internal protection diodes are designed to withstand  
2.5kV (using Human Body Model) and will provide ad-  
equate ESD protection for most normal handling proce-  
dures. However, static damage can cause subtle changes in  
amplifier input characteristics without necessarily destroy-  
ing the device. In precision buffer amplifiers, this may cause  
a noticeable degradation of offset voltage and drift. There-  
fore, static protection is strongly recommended when han-  
dling the MPC100.  
An advanced complementary bipolar process, consisting of  
pn-junction isolated high-frequency NPN and PNP transis-  
tors, provides wide bandwidth while maintaining low  
crosstalk and harmonic distortion. The single chip band-  
width of over 250MHz at an output voltage of 1.4Vp-p  
allows the design of large crosspoint or distribution fields  
in HDTV-quality with an overall system bandwidth of  
36MHz. The buffer amplifiers also offer low differential  
gain (0.05%) and phase (0.01°) errors. These parameters  
are essential for video applications and demonstrate how  
well the signal path maintains a constant small-signal gain  
and phase for the low-level color subcarrier at 4.43MHz  
(PAL) or 3.58MHz (NSTC) as the brightness (luminance)  
signal is ramped through its specified range. The bipolar  
construction also ensures that the input impedance remains  
high and constant between ON and OFF states. The ON/  
OFF input capacitance ratio is near unity, and does not vary  
with power supply voltage variations. The low output  
capacitance of 1.5pF when no channel is selected is a very  
important parameter for large distribution fields. Each par-  
allel output capacitance is an additional load and reduces  
the overall system bandwidth.  
Static damage has been well recognized for MOSFET de-  
vices, but any semiconductor device deserves protection  
from this potentially damaging source. The MPC100 incor-  
porates on-chip ESD protection diodes as shown in Figure 1.  
This eliminates the need for the user to add external protec-  
tion diodes, performance.  
ESD Protection diodes  
+VCC  
internally connected to all pins.  
External Pin  
Internal Circuitry  
–VCC  
FIGURE 1. Internal ESD Protection.  
DISCUSSION  
OF PERFORMANCE  
The MPC100 video multiplexer allows the user to connect  
any one of four analog input channels (IN1-IN4) to the output  
of the component and to switch between channels within  
less than 0.5µs. It consists of four identical unity-gain buffer  
amplifiers, which are connected together internally at the  
output. The open loop buffers consisting of complementary  
Bipolar video crosspoint switches are virtually glitch-free  
when compared to signal switches using CMOS or DMOS  
devices. The MPC100 operates with a fast make-before-  
break switching action to keep the output switching tran-  
sients small and short. Switching from one channel to  
another causes the signal to mix at the output for a short  
time, but it interferes only minimally with the input signals.  
®
9
MPC100  
The transient peaks remain less than +2.5mV and –1.2mV.  
Subsequent equipment might interpret large negative output  
glitches as synchronization pulses. To remove this problem,  
the output must be clamped during the switching dead time.  
With the MPC100, the generated output transients are ex-  
tremely small and clamping is unnecessary. The switching  
time between two channels is less than 0.5µs. This short  
time period allows easy switching during the vertical blank-  
ing time. The signal envelope during the transition from one  
channel to another rises and falls symmetrically and shows  
less overshooting or DC settling transients.  
• Bypass power supplies very close to the device pins. Use  
tantalum chip capacitors (approximately 2.2µF), a parallel  
470pF ceramic chip capacitor may be added if desired.  
Surface-mount types are recommended due to their low  
lead inductance.  
• PC board traces for signal and power lines should be wide  
to reduce impedance or inductance.  
• Make short and low inductance traces. The entire physical  
circuit layout should be as small as possible.  
• Use a low-impedance ground plane on the component side  
to ensure that low-impedance ground is available through-  
out the layout. Grounded traces between the input traces  
are essential to achieve high interchannel crosstalk rejec-  
tion. Refer to the suggested layout shown in Figure 6.  
Power consumption is a serious problem when designing  
large crosspoint fields with high component density. Most of  
the buffers are always in off-state. One important design  
goal was to attain low off-state quiescent current when no  
channel is selected. The low supply current of ±230µA in  
off-state and ±4.6mA when one channel is selected, as well  
as the reduced ±5V supply voltage, conserves power, simpli-  
fies the power supply design, and results in cooler, more  
reliable operation.  
• Do not extend the ground plane under high-impedance  
nodes sensitive to stray capacitances, such as the buffer’s  
input terminals.  
• Sockets are not recommended because they add signifi-  
cant inductance and parasitic capacitance. If sockets are  
required, use zero-profile solderless sockets.  
CIRCUIT LAYOUT  
• Use low-inductance and surface-mounted components to  
achieve the best AC-performance.  
The high-frequency performance of the MPC100 can be  
greatly affected by the physical layout of the circuit. The  
following tips are offered as suggestions, not as absolutes.  
Oscillations, ringing, poor bandwidth and settling, higher  
crosstalk, and peaking are all typical problems which plague  
high-speed components when they are used incorrectly.  
• A resistor (100to 200) in series with the input of the  
buffers may help to reduce peaking. Place the resistor as  
close as possible to the pin.  
• Plug-in prototype boards and wire-wrap boards will not  
function well. A clean layout using RF techniques is  
essential.  
SEL1  
(14)  
IN1  
(1)  
DB1  
GND  
(2)  
+VCC = +5V  
(10)  
SEL2  
(13)  
IN2  
(3)  
VOUT  
(11)  
DB2  
(12)  
–VCC = –5V  
SEL3  
GND  
(4)  
(9)  
IN3  
DB3  
DB4  
(5)  
SEL1  
(8)  
GND  
(6)  
IN4  
(7)  
NOTE: DB = Diamond Buffer  
FIGURE 2. Simplified Circuit Diagram.  
®
10  
MPC100  
10  
0
150Ω  
DB1  
DB2  
DB3  
DB4  
IN1  
GND  
SEL1  
SEL2  
SEL3  
SEL4  
0
0
1
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
50Ω  
150Ω  
IN2  
VI  
15Ω  
180Ω  
50Ω  
50Ω  
50Ω  
GND  
IN3  
BUF601  
VO  
22pF  
VO  
VI  
Crosstalk = 20log  
VI = 1.4Vp-p  
MPC100AP  
MPC100AU  
GND  
150Ω  
–80  
–90  
IN3 is connected to GND  
IN4  
MPC100  
1M  
10M  
100M 300M  
Frequency (Hz)  
FIGURE 3. Channel Crosstalk—Grounded Input.  
10  
0
150Ω  
DB1  
IN1  
SEL1  
SEL2  
SEL3  
SEL4  
0
0
1
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
GND  
MPC100AP  
MPC100AU  
50Ω  
150Ω  
200Ω  
VI  
IN2  
DB2  
DB3  
DB4  
15Ω  
180Ω  
50Ω  
50Ω  
50Ω  
GND  
IN3  
BUF601  
VO  
22pF  
VO  
VI  
Crosstalk = 20log  
VI = 1.4Vp-p  
GND  
150Ω  
–80  
–90  
IN3 is connected with 150+ 50to GND  
IN4  
MPC100  
1M  
10M  
100M 300M  
Frequency (Hz)  
FIGURE 4. Channel Crosstalk—150Input Resistor.  
10  
0
150Ω  
DB1  
IN1  
SEL1  
SEL2  
SEL3  
SEL4  
0
0
0
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
GND  
IN2  
MPC100AU  
50Ω  
150Ω  
150Ω  
VI  
DB2  
DB3  
DB4  
180Ω  
50Ω  
50Ω  
50Ω  
GND  
IN3  
BUF601  
VO  
VO  
VI  
Crosstalk = 20log  
VI = 1.4Vp-p  
GND  
–80  
–90  
MPC100AP  
100M 300M  
150Ω  
IN4  
1M  
10M  
MPC100  
Frequency (Hz)  
FIGURE 5. Off Isolation.  
®
11  
MPC100  
2.2µ  
470p  
–5V  
IN13  
75Ω  
75Ω  
75Ω  
75Ω  
150Ω  
150Ω  
150Ω  
150Ω  
1
14  
13  
2
3
12  
11  
10  
9
22Ω  
4
5
6
7
IN16  
8
MPC100  
2.2µ  
470p  
2.2µ  
470p  
+5V  
0.1µF  
16  
VCC  
15  
14  
13  
12  
11  
10  
9
1
Y0  
Y1  
Y2  
Y3  
Y4  
Y5  
Y6  
Y7  
A0  
A0  
A1  
A3  
CS  
2
A1  
IN13  
3
75Ω  
75Ω  
75Ω  
75Ω  
150Ω  
150Ω  
150Ω  
150Ω  
A3  
1
14  
74HC  
237  
6
CS1  
13  
2
3
5
4
CS2  
+5V  
12  
11  
10  
9
22Ω  
4
5
6
7
7
LE  
GND  
IN16  
8
MPC100  
2.2µ  
470p  
2.2µ  
470p  
IN13  
75Ω  
75Ω  
75Ω  
75Ω  
150Ω  
150Ω  
150Ω  
150Ω  
1
14  
13  
2
3
+5V  
0.1µF  
12  
11  
10  
9
16  
VCC  
22Ω  
4
5
6
7
15  
14  
13  
12  
11  
10  
9
1
Y0  
Y1  
Y2  
Y3  
Y4  
Y5  
Y6  
Y7  
A0  
2
A1  
3
A2  
74HC  
237  
5
CS2  
IN16  
6
4
CS1  
8
MPC100  
7
2.2µ  
LE  
GND  
470p  
2.2µ  
470p  
IN13  
75Ω  
75Ω  
75Ω  
75Ω  
150Ω  
150Ω  
150Ω  
150Ω  
1
14  
+5V  
13  
2
3
2.2µ  
12  
11  
10  
9
10n  
6
22Ω  
150Ω  
4
5
6
7
3
2
7
+
75Ω  
OPA623  
Out  
–5V  
10n  
4
220Ω  
2.2µ  
220Ω  
IN16  
8
MPC100  
2.2µ  
470p  
+5V  
FIGURE 6. Video Distribution Field.  
®
12  
MPC100  
+5V  
2.2µ  
+5V  
0.1µ  
470p  
10  
4
8
5
BUF600  
+5V  
LE GND CS2  
14  
13  
9
15 Y0  
14 Y1  
13 Y2  
12 Y3  
1
2
3
5
A0  
A1  
In  
1
5
180Ω  
150Ω  
150Ω  
150Ω  
150Ω  
4
8
1
74HC  
237  
+1  
DB1  
–5V  
A2  
CS1  
2
3
75Ω  
75Ω  
8
150Ω  
DB2  
DB3  
DB4  
+5V  
150Ω  
11  
4
5
6
7
3
+
7
Out  
75Ω  
150Ω  
75Ω  
6
OPA623  
R-2R  
Ladder  
Network  
2
4
–5V  
390Ω  
75Ω  
75Ω  
390 Ω  
MPC100  
12  
2.2µ  
CS  
0
A1  
0
A0  
GAIN SEL1  
2
0
1
0
0
0
3
0
0
1
0
0
4
0
0
0
1
0
0
1
0
1
X
2
1
1
0
0
0
0
0
0
470p  
–5V  
0
1
0.5  
0.25  
0
0
1
1
X
FIGURE 7. Digital Gain Control.  
+5V  
0.1µ  
16  
V
4
8
5
+5V  
LE GND CS2  
CC  
15 Y0  
14 Y1  
13 Y2  
12 Y3  
1
2
3
5
A0  
A1  
2.2µ  
470p  
10  
A2  
CS1  
14  
13  
9
In1  
In2  
In3  
In4  
150Ω  
150Ω  
150Ω  
150Ω  
1
DB1  
50Ω  
50Ω  
50Ω  
50Ω  
2
3
8
DB2  
DB3  
DB4  
12 Bit  
10MHz  
A/D Converter  
+5V  
7
150Ω  
11  
4
5
6
7
3
+
6
Signal  
Input  
OPA620  
2
4
–5V  
220Ω  
220Ω  
ADS804  
MPC100  
12  
2.2µ  
470p  
–5V  
FIGURE 8. High Speed Data Acquisition System.  
®
13  
MPC100  
150Ω  
150Ω  
150Ω  
150Ω  
1
R
DB1  
DB2  
DB3  
–5V  
2.2µ  
+5V  
2.2µ  
2
3
CH1  
G
B
470p  
10n  
6
12  
11  
10  
150Ω  
7
4
5
6
7
3
2
+
75Ω  
R
OPA623  
75Ω  
2.2µ  
4
390Ω  
470p  
2.2µ  
10n  
390Ω  
+5V  
DB4  
–5V  
MPC100  
9
10 13 14  
150Ω  
150Ω  
150Ω  
150Ω  
1
DB1  
DB2  
DB3  
R
–5V  
2.2µ  
+5V  
2.2µ  
2
3
CH2  
G
B
470p  
10n  
12  
11  
10  
150Ω  
7
4
5
6
7
3
+
75Ω  
6
G
OPA623  
75Ω  
2
2.2µ  
4
390Ω  
2.2µ  
470p  
390Ω  
10n  
+5V  
DB4  
–5V  
5
MPC100  
+5V  
9
10 13 14  
R
16  
CS  
CS1 VCC  
A0  
15 Y0  
1
2
3
4
A0  
A1  
CH3  
G
B
74HC  
237  
14 Y1  
13 Y2  
12 Y3  
A1  
A9  
LE  
CS2 GND  
75Ω  
5
8
9
10 13 14  
150Ω  
150Ω  
150Ω  
150Ω  
1
DB1  
–5V  
2.2µ  
+5V  
2.2µ  
2
3
470p  
10n  
12  
11  
10  
DB2  
DB3  
150Ω  
7
4
5
6
7
3
2
R
+
75Ω  
6
B
OPA623  
2.2µ  
4
CH4  
G
B
390Ω  
2.2µ  
10n  
470p  
390Ω  
+5V  
DB4  
–5V  
75Ω  
MPC100  
FIGURE 9. Distribution Field for High Resolution Graphic Cards, Cameras.  
®
14  
MPC100  
Out  
RO1  
RO1  
RI  
150Ω  
RB  
51Ω  
400MHz  
Scope  
ROUT  
50Ω  
50Ω  
VO  
VI  
In  
DUT  
+1  
BOUT  
RIN  
=
RIN =  
50Ω  
50Ω  
50Ω  
COUT  
DB1 to DB4  
BUF601  
Pulse  
Generator  
FIGURE 10. Test Circuit Pulse Response.  
MPC100  
OPA623  
VIN  
150Ω  
150Ω  
75Ω  
Generator  
Video  
Analyzer  
4
3
+
75Ω  
DUT  
75Ω  
8
RIN  
=
75Ω  
RIN  
=
75Ω  
10kΩ  
75Ω  
390Ω  
DB1 to DB4  
4.43MHz  
390Ω  
VDC  
FIGURE 11. Test Circuit Differential Gain and Phase.  
Out  
RO1  
RO1  
RI  
150Ω  
RB  
51Ω  
Spectrum  
Analyzer  
ROUT  
50Ω  
50Ω  
VO  
VI  
Generator  
In  
DUT  
+1  
BOUT  
RIN  
=
RIN =  
50Ω  
50Ω  
50Ω  
COUT  
DB1 to DB4  
BUF601  
FIGURE 12. Test Circuit Frequency Response.  
MPC100  
SEL Inputs  
MPC100  
SEL Inputs  
MPC100  
SEL Inputs  
MPC100  
SEL Inputs  
MPC100  
SEL Inputs  
MPC100  
SEL Inputs  
1
4
3
5
5
6
7
7
1
3
5
7
1
3
5
7
7
1
3
5
7
1
4
3
5
5
6
7
7
1
3
5
7
14 13 12 11  
4
5
6
14 13 12 11  
14 13 12 11  
Parallel Out  
HC4094  
Parallel Out  
HC4094  
Parallel Out  
HC4094  
2
3
2
3
2
3
SER  
Out  
SER  
Out  
SER  
Out  
SER In  
D
• • •  
3
1
15  
3
1
15  
3
1
15  
Clock  
STR  
OE  
FIGURE 13. Serial Bus-Controlled Distribution Field.  
®
15  
MPC100  
PACKAGE OPTION ADDENDUM  
www.ti.com  
17-Mar-2005  
PACKAGING INFORMATION  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
PDIP  
SOIC  
SOIC  
Drawing  
MPC100AP  
MPC100AU  
OBSOLETE  
OBSOLETE  
OBSOLETE  
N
D
D
14  
14  
14  
TBD  
TBD  
TBD  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
MPC100AU/2K5  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan  
-
The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS  
&
no Sb/Br)  
-
please check  
http://www.ti.com/productcontent for the latest availability information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame  
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 1  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,  
enhancements, improvements, and other changes to its products and services at any time and to discontinue  
any product or service without notice. Customers should obtain the latest relevant information before placing  
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and conditions of sale supplied at the time of order acknowledgment.  
TI warrants performance of its hardware products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI  
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Microcontrollers  
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Security  
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