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| 型号： | ISL28197EVAL1Z |
| 厂商： | Intersil |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD FOR ISL28197 |
| 标准包装： | 1 |
| 主要目的： | 比较器，单路 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ISL28197 |
| 主要属性： | 轨至轨输入和输出 |
| 次要属性： | 1.8 V ~ 5.5 V 电源 |
| 已供物品： | 板 |
10
FN6152.4
September 29, 2008
Pin Descriptions
Applications Information
Introduction
The ISL28196 and ISL28197 are CMOS rail-to-rail input and
output (RRIO) micropower comparators. These devices are
designed to operate from single supply (1.8V to 5.5V) and
have an input common mode range that extends to the
positive rail and to the negative supply rail for true rail-to-rail
performance. The CMOS output can swing within tens of
millivolts to the rails. Featuring worst case maximum supply
currents of only 4.5A and 2A for the ISL28196 and
ISL28197 respectively, these comparators are ideally suited
for solar and battery powered applications.
Input Protection
All input terminals have internal ESD protection diodes to both
positive and negative supply rails, limiting the input voltage to
within one diode beyond the supply rails. Both the ISL28196
and ISL28197 have a maximum input differential voltage that
extends beyond the rails (+V + 0.5V to -V - 0.5V).
Rail-to-Rail Output
A pair of complementary MOSFET devices are used to
achieve the rail-to-rail output swing. The NMOS sinks
current to swing the output in the negative direction. The
PMOS sources current to swing the output in the positive
direction. The ISL28196 and ISL28197 with a 100k
Ω load
will swing to within 6mV of the positive supply rail and within
3mV of ground.
FIGURE 41. ISL28196 FALL TIME vs TEMPERATURE 20% TO
80%, V+ = 5V
FIGURE 42. ISL28197 FALL TIME vs TEMPERATURE 20% TO
80%, V+ = 5V
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, unless otherwise specified. (Continued)
4.5
5.0
5.5
6.0
6.5
7.5
8.0
-40
-20
0
20
406080
100
120
MIN
MAX
MEDIAN
N = 1000
+
PRO
P
DE
LA
Y
(
s)
TEMPERATURE (°C)
7.0
4.5
9.5
14.5
19.5
24.5
29.5
34.5
39.5
44.5
49.5
54.5
-40
-20
0
20
40
60
80
100
120
MIN
MAX
MEDIAN
N = 1000
+
PR
OP
DE
LA
Y
(
s
)
TEMPERATURE (°C)
ISL28196,
ISL28197
(6 LD SOT-23)
ISL28196,
ISL28197
(6 LD TDFN)
PIN NAME
EQUIVALENT
CIRCUIT
DESCRIPTION
1
4
OUT
Circuit 3
Comparator output
2
GND
Circuit 4
GROUND terminal
3
IN+
Circuit 1
Comparator non-inverting input
4
1
IN-
Circuit 1
Comparator inverting input
5
EN
Circuit 2
Comparator enable pin; Logic “1” selects the enabled state: Logic “0” selects the
disabled state
6
V+
Circuit 4
Positive power supply
LOGIC
PIN
V+
V-
V+
V-
OUT
CIRCUIT 3
CIRCUIT 1
CIRCUIT 2
V+
V-
CAPACITIVELY
COUPLED
ESD CLAMP
CIRCUIT 4
IN-
V+
V-
IN+
100
Ω
ISL28196, ISL28197
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