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参数资料
| 型号： | SPT9689BIC |
| 厂商： | SIGNAL PROCESSING TECHNOLOGIES |
| 元件分类： | 运动控制电子 |
| 英文描述： | DUAL ULTRAFAST VOLTAGE COMPARATOR |
| 中文描述： | DUAL COMPARATOR, 30000 uV OFFSET-MAX, CQCC20 |
| 封装： | LCC-20 |
| 文件页数： | 6/8页 |
| 文件大小： | 75K |
| 代理商： | SPT9689BIC |
6
2/20/01
SPT9689
TYPICAL INTERFACE CIRCUIT
The typical interface circuit using the comparator is shown
in figure 3. Although it needs few external components
and is easy to apply, there are several conditions that
should be noted to achieve optimal performance. The very
high operating speeds of the comparator require careful
layout, decoupling of supplies, and proper design of trans-
mission lines.
Since the SPT9689 comparator is a very high-frequency
and high-gain device, certain layout rules must be fol-
lowed to avoid oscillations. The comparator should be
soldered to the board with component lead lengths kept
as short as possible. A ground plane should be used while
the input impedance to the part is kept as low as possible
to decrease parasitic feedback. If the output board traces
are longer than approximately half an inch, microstripline
techniques must be employed to prevent ringing on the
output waveform. Also, the microstriplines must be termi-
nated at the far end with the characteristic impedance of
the line to prevent reflections. Both supply voltage pins
should be decoupled with high-frequency capacitors as
close to the device as possible. All ground pins and no
connects should be soldered to a common ground plane
to further improve noise immunity. If using the SPT9689
as a single comparator, the outputs of the inactive com-
parator can be grounded, left open, or terminated with
50 ohms to
–
2 V. All outputs on the active comparator,
whether used or unused, should have identical termina-
tions to minimize ground current switching transients.
Figure 3 – SPT9689 Typical Interface Circuit
Figure 4 – SPT9689 Typical Interface Circuit
with Hysteresis
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SPT9689BIJ | 功能描述:校验器 IC VOLTAGE COMPARATOR <100ps 5-50mV 10V/ns RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| SPT9689BIP | 功能描述:校验器 IC Dual Comparator High Speed RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| SPT9691 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:WIDE INPUT VOLTAGE, JFET COMPARATOR |
| SPT9691SCC | 功能描述:校验器 IC JFET COMPARATR 2.5ns <100pA -4 - +8V RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| SPT9691SCN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:WIDE INPUT VOLTAGE, JFET COMPARATOR |
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