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| 型号： | LT1016IS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 18/20页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR 10NS HI-SPD 8-SOIC |
| 标准包装： | 2,500 |
| 系列： | UltraFast™ |
| 类型： | 带锁销 |
| 元件数： | 1 |
| 输出类型： | CMOS，补充型，TTL |
| 电压 - 输入偏移（最小值）： | 3mV @ ±5V |
| 电流 - 输入偏压（最小值）： | 10µA @ ±5V |
| 电流 - 输出（标准）： | 20mA |
| 电流 - 静态（最大值）： | 35mA |
| CMRR, PSRR（标准）： | 96dB CMRR，75dB PSRR |
| 传输延迟（最大）： | 14ns |
| 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) |
LT1016
7
1016fc
applicaTions inForMaTion
The circuit shown in Figure 1 is the best electronic means
of generating a known fast, clean step to test comparators.
It uses a very fast transistor in a common base configura-
tion. The transistor is switched “off” with a fast edge from
thegeneratorandthecollectorvoltagesettlestoexactly0V
in just a few nanoseconds. The most important feature of
this circuit is the lack of feedthrough from the generator
to the comparator input. This prevents overshoot on the
comparator input that would give a false fast reading on
comparator response time.
To adjust this circuit for exactly 5mV overdrive, V1 is
adjusted so that the LT1016 output under test settles to
1.4V (in the linear region). Then V1 is changed –5V to set
overdrive at 5mV.
The test circuit shown measures low to high transition
on the “+” input. For opposite polarity transitions on the
output, simply reverse the inputs of the LT1016.
High Speed Design Techniques
AsubstantialamountofdesignefforthasmadetheLT1016
relatively easy to use. It is much less prone to oscillation
and other vagaries than some slower comparators, even
with slow input signals. In particular, the LT1016 is stable
in its linear region, a feature no other high speed compara-
tor has. Additionally, output stage switching does not ap-
preciably change power supply current, further enhancing
stability. These features make the application of the 50GHz
gain-bandwidth LT1016 considerably easier than other
fast comparators. Unfortunately, laws of physics dictate
that the circuit environment the LT1016 works in must be
properly prepared. The performance limits of high speed
circuitry are often determined by parasitics such as stray
capacitance,groundimpedanceandlayout.Someofthese
considerationsarepresentindigitalsystemswheredesign-
ers are comfortable describing bit patterns and memory
access times in terms of nanoseconds. The LT1016 can
be used in such fast digital systems and Figure2 shows
just how fast the device is. The simple test circuit allows
us to see that the LT1016’s (Trace B) response to the pulse
generator (Trace A) is as fast as a TTL inverter (Trace C)
even when the LT1016 has only millivolts of input signal!
Linearcircuitsoperatingwiththiskindofspeedmakemany
engineers justifiably wary. Nanosecond domain linear
circuits are widely associated with oscillations, mysteri-
ous shifts in circuit characteristics, unintended modes of
operation and outright failure to function.
Figure 1. Response Time Test Circuit
–
+
PULSE
IN
0V
–100mV
–3V
–5V
5V
0.1F
50
25
10
400
130
750
10k
2N3866
V1
0.01F
0.01F**
LT1016
L
Q
10X SCOPE PROBE
(CIN ≈ 10pF)
10X SCOPE PROBE
(CIN ≈ 10pF)
* SEE TEXT FOR CIRCUIT EXPLANATION
** TOTAL LEAD LENGTH INCLUDING DEVICE PIN.
SOCKET AND CAPACITOR LEADS SHOULD BE
LESS THAN 0.5 IN. USE GROUND PLANE
(VOS + OVERDRIVE) 1000
1016 F01
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1016M | 制造商:LINER 制造商全称:Linear Technology 功能描述:Ultra Fast Precision Comparator |
| LT1016MH | 制造商:LINER 制造商全称:Linear Technology 功能描述:Ultra Fast Precision Comparator |
| LT1016MJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
| LT1016MJ8 | 制造商:Linear Technology 功能描述:Comparator Single ±5V/10V 8-Pin CDIP 制造商:Linear Technology 功能描述:Voltage Comparator, Single, 8 Pin, Ceramic, DIP |
| LT1016MJG | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
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