參數(shù)資料
型號(hào): LT1719CS6
廠商: LINEAR TECHNOLOGY CORP
元件分類: 運(yùn)動(dòng)控制電子
英文描述: 4.5ns Single/Dual Supply 3V/5V Comparator with Rail-to-Rail Output
中文描述: COMPARATOR, 3500 uV OFFSET-MAX, 7 ns RESPONSE TIME, PDSO6
封裝: PLASTIC, EIAJ, SC-74A, SOT-23, 6 PIN
文件頁數(shù): 11/16頁
文件大?。?/td> 234K
代理商: LT1719CS6
11
LT1719
APPLICATIO
S I
N
FOR
ATIO
U
W
U
5V
5V
180
DO NOT USE FOR LT1719
LEVEL TRANSLATION. SEE TEXT
270
820
10KH/E
R2
+V
S
R3
R1
10KH/E
100K/E
+V
S
5V OR 5.2V
4.5V
R1
510
620
R2
180
180
R3
750
510
(a) STANDARD TTL TO PECL TRANSLATOR
(b) LT1719 OUTPUT TO PECL TRANSLATOR
LSTTL
LT1719
V
EE
V
CC
V
EE
V
CC
R2
V
ECL
3V
R3
R4
R1
10KH/E
100K/E
V
ECL
5V OR 5.2V
4.5V
R1
300
330
R2
180
180
R3
OMIT
1500
(c) 3V LT1719 OUTPUT TO PECL TRANSLATOR
LT1719
R4
560
1000
R4
V
ECL
+V
S
V
CC
V
EE
R3
1719 F06
R2
R1
ECL FAMILY
10KH/E
V
ECL
–5.2V
R1
560
270
680
330
+V
S
5V
3V
5V
3V
R2
270
510
270
390
R3
330
300
300
270
(d) LT1719 OUTPUT TO STANDARD ECL TRANSLATOR
LT1719
R4
1200
330
1500
430
100K/E
–4.5V
Figure 6
evaluated carefully. Note that there is some degradation of
noise margin due to the
±
5% resistor selections shown.
With 10KH/E, there is no temperature compensation of the
logic levels, whereas the LT1719 and the circuits shown
give levels that are stable with temperature. This will lower
the noise margin over temperature. In some configura-
tions it is possible to add compensation with diode or
transistor junctions in series with the resistors of these
networks.
For more information on ECL design, refer to the ECLiPS
data book (DL140), the 10KH system design handbook
(HB205) and PECL design (AN1406), all from Motorola.
Circuit Description
The block diagram of the LT1719 is shown in Figure 7. The
circuit topology consists of a differential input stage, a
gain stage with hysteresis and a complementary com-
mon-emitter output stage. All of the internal signal paths
utilize low voltage swings for high speed at low power.
The input stage topology maximizes the input dynamic
range available without requiring the power, complexity
and die area of two complete input stages such as are
found in rail-to-rail input comparators. With a single 2.7V
supply, the LT1719 still has a respectable 1.6V of input
相關(guān)PDF資料
PDF描述
LT1719IS6 4.5ns Single/Dual Supply 3V/5V Comparator with Rail-to-Rail Output
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相關(guān)代理商/技術(shù)參數(shù)
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