- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄366885 > CPM100 CPM100 - DISCONTINUED PRODUCT. No longer recommended for new design. PDF資料下載
參數(shù)資料
| 型號(hào)： | CPM100 |
| 英文描述： | CPM100 - DISCONTINUED PRODUCT. No longer recommended for new design. |
| 中文描述： | CPM100 -已停產(chǎn)產(chǎn)品。不再推薦用于新設(shè)計(jì)。 |
| 文件頁(yè)數(shù)： | 8/11頁(yè) |
| 文件大?。?/td> | 152K |
| 代理商： | CPM100 |
8
CMP100
solution for preserving dynamic performance and reducing
noise coupling into sensitive circuits.
When passing power through a connector, use every avail-
able spare pin for making power supply return connections,
and use some of the pins as a Faraday shield to separate the
Analog and Digital Common lines.
Power Supply Returns
(ACOM, DCOM and PWRCOM)
For best performance, connect ACOM (pin 13) and DCOM
(pin 4) to the ground plane under the comparator. PWRCOM
(pin 5), which is connected to the collectors of the ECL
outputs, can be returned by separate printed circuit trace but
its inductance should be kept low to avoid ringing. Do not
connect ACOM and DCOM together at the end of a long
printed circuit trace and then run a single wire to the power
supply. To use separate ACOM and DCOM return printed
circuit traces, connect a 1
μ
F to 47
μ
F tantalum capacitor
between DCOM and ACOM pins as close to the package as
possible.
Power Supply Bypassing
Every power supply line leading into the comparator must
be bypassed to the Common pins. The bypass capacitor
should be located as close to the comparator package as
possible and tied to a solid return, preferably to the ground
plane under the device. If the capacitors are not close enough
to the package, DC resistance and inductance may be above
acceptable levels. Use tantalum capacitors with values of
from 1
μ
F to 10
μ
F. Parallel them with smaller ceramic
INSTALLATION
TERMINATING ECL OUTPUTS
The best performance will be achieved with the use of
proper ECL terminations. Such a configuration is illustrated
in Figure 3. The open-emitter outputs of the CMP100 are
designed to be terminated through 50
resistors to –2V or
any other equivalent termination. If high-speed ECL signals
must be routed more than a few centimeters, MicroStrip or
StripLine techniques may be required to insure proper tran-
sition times and prevent output ringing.
POWER SUPPLY SELECTION
Linear power supplies are preferred. Although switching
power supply rms specifications may appear to indicate low
noise output, voltage spikes generated by switchers may be
hard to filter. Their high-frequency components may be
extremely difficult to keep out of the power supply return
system. If switchers must be used, their outputs must be
carefully filtered and the power supply itself should be
shielded and located as far away as possible from precision
analog circuits.
PRINTED CIRCUIT LAYOUT CONSIDERATIONS
Power Supply Wiring
Use heavy power supply and power supply common (ground)
wiring. A ground plane under the part is usually the best
FIGURE 2. Circuit for Evaluating Analog Propagation Delay, t
PDH
, t
PDL
.
Q
1
ACOM
V
REF 2
Analog
In
V
REF 1
LE
1
LE
1
Q
1
DCOM
PWR
COM
V–
Q
2
Q
2
LE
2
LE
2
2
3
V+
11
12
14
13
4
5
16
16.6
16.6
16.6
Scope
To 50
Generator
+5V
1μF
0.1μF
16.6
16.6
16.6
16.6
To
50
Scope
1
15
9
7
6
–5.2V
00
1
0.1μF
1μF
1μF
0.1μF
66.5
66.5
–4V
CMP100
00
1
From 50
49.9
10
8
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CPS1102 | Analog IC |
| CPS1103 | Analog IC |
| CPS1104 | Analog IC |
| CPS1104A | Analog IC |
| CPS1105 | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CPM10048S05 | 制造商:XPPOWER 制造商全稱(chēng):XP Power Limited 功能描述:Component Power DC-DC Modules |
| CPM10048S12 | 制造商:XPPOWER 制造商全稱(chēng):XP Power Limited 功能描述:Component Power DC-DC Modules |
| CPM100C2S13 | 制造商:XPPOWER 制造商全稱(chēng):XP Power Limited 功能描述:Component Power DC-DC Modules |
| CPM100FS05 | 制造商:XPPOWER 制造商全稱(chēng):XP Power Limited 功能描述:Component Power DC-DC Modules |
| CPM100FS12 | 制造商:XPPOWER 制造商全稱(chēng):XP Power Limited 功能描述:Component Power DC-DC Modules |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。