- 您现在的位置：买卖IC网 > PDF目录2082 > LT1011AIS8#TRPBF (Linear Technology)IC VOLTAGE COMPARATOR 5V 8-SOIC PDF资料下载
参数资料
| 型号： | LT1011AIS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC VOLTAGE COMPARATOR 5V 8-SOIC |
| 标准包装： | 2,500 |
| 类型： | 通用 |
| 元件数： | 1 |
| 输出类型： | 开路集电极 |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 36 V，±1.5 V ~ 18 V |
| 电压 - 输入偏移（最小值）： | 0.75mV @ ±15V |
| 电流 - 输入偏压（最小值）： | 0.035µA @ ±15V |
| 电流 - 输出（标准）： | 50mA |
| 电流 - 静态（最大值）： | 4mA |
| CMRR, PSRR（标准）： | 115dB CMRR |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 安装类型： | 表面贴装 |
| 包装： | 带卷 (TR) |
LT1011/LT1011A
10
1011afe
For more information www.linear.com/LT1011
applicaTions inForMaTion
Theinputresistorsshouldlimitfaultcurrenttoareasonable
value (0.1mA to 20mA). Power dissipation in the resis-
tors must be considered for continuous faults, especially
when the LT1011 supplies are off. One final caution: lightly
loaded supplies may be forced to higher voltages by large
fault currents flowing through D1-D4.
R3 and R4 limit input current to the LT1011 to less than
1mA when the input signals are held below V–. They may
be eliminated if R1 and R2 are large enough to limit fault
current to less than 1mA.
Input Slew Rate Limitations
The response time of a comparator is typically measured
with a 100mV step and a 5mV to 10mV overdrive. Unfor-
tunately, this does not simulate many real world situations
where the step size is typically much larger and overdrive
can be significantly less. In the case of the LT1011, step
size is important because the slew rate of internal nodes
will limit response time for input step sizes larger than
1V. At 5V step size, for instance, response time increases
from 150ns to 360ns. See the curve “Response Time vs
Input Step Size for more detail.
If response time is critical and large input signals are ex-
pected,clampdiodesacrosstheinputsarerecommended.
The slew rate limitation can also affect performance when
differential input voltage is low, but both inputs must
slew quickly. Maximum suggested common mode slew
rate is 10V/s.
Strobing
The LT1011 can be strobed by pulling current out of the
STROBE pin. The output transistor is forced to an “off”
state, giving a “hi” output at the collector (Pin 7). Currents
as low as 250A will cause strobing, but at low strobe
currents, strobe delay will be 200ns to 300ns. If strobe
current is increased to 3mA, strobe delay drops to about
60ns.ThevoltageattheSTROBEpinisabout150mVbelow
V+ at zero strobe current and about 2V below V+ for 3mA
strobe current. Do not ground the STROBE pin. It must
be current driven. Figure 4 shows a typical strobe circuit.
Note that there is no bypass capacitor between Pins 5 and
6. This maximizes strobe speed, but leaves the compara-
tor more sensitive to oscillation problems for slow, low
Figure 4. Typical Strobe Circuit
Figure 5. Output Transistor Circuitry
level inputs. A 1pF capacitor between the output and Pin
5 will greatly reduce oscillation problems without reduc-
ing strobe speed.
DC hysteresis can also be added by placing a resistor
from the output to Pin 5. See step 5 under “Preventing
Oscillation Problems.”
The pin (6) used for strobing is also one of the offset adjust
pins. Current flow into or out of Pin 6 must be kept very
low (<0.2A) when not strobing to prevent input offset
voltage shifts.
Output Transistor
The LT1011 output transistor is truly floating in the sense
that no current flows into or out of either the collector
or emitter when the transistor is in the “off” state. The
equivalent circuit is shown in Figure 5.
–
+
LT1011
15V
5V
RL
3k
TTL OR
CMOS DRIVE
(5V SUPPLY)
OUTPUT
–15
8
6
1
7
4
1011 F04
3
2
R1
170
R2
470
Q1
V+
D2
I1
0.5mA
1011 F05
V–
D1
Q2
EMITTER
(GND PIN)
COLLECTOR
(OUTPUT)
OUTPUT
TRANSISTOR
相关PDF资料 |
PDF描述 |
|---|---|
| LT1016IS8#TRPBF | IC COMPARATOR 10NS HI-SPD 8-SOIC |
| LT1017IS8#TRPBF | IC COMPARATOR MICRPWR DUAL 8SOIC |
| LT1116CS8#TRPBF | IC COMPARATOR 12NS SINGLE 8SOIC |
| LT1187CN8#PBF | IC AMP VIDEO DIFFRNC ADJ 8-DIP |
| LT1189CN8#PBF | IC AMP VIDEO DIFFRNC ADJ 8-DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1011AMH | 制造商:Linear Technology 功能描述:Comparator Single ±15V/30V 8-Pin TO-5 |
| LT1011AMH/883 | 制造商:Linear Technology 功能描述:Comparator Single 制造商:Linear Technology 功能描述:Comparator Single ±15V/30V 8-Pin TO-5 |
| LT1011AMJ8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Voltage Comparator |
| LT1011AMJG | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
| LT1011AML | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
发布紧急采购，3分钟左右您将得到回复。