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参数资料
| 型号： | LT1228IN8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/22页 |
| 文件大小： | 0K |
| 描述： | IC CURRNT FEEDBK AMP 100MHZ 8DIP |
| 标准包装： | 50 |
| 放大器类型： | 电流反馈 |
| 电路数： | 1 |
| 转换速率： | 3500 V/µs |
| -3db带宽： | 100MHz |
| 电流 - 输入偏压： | 10µA |
| 电压 - 输入偏移： | 3000µV |
| 电流 - 电源： | 6mA |
| 电流 - 输出 / 通道： | 125mA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 36 V，±2 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
LT1228
18
1228fd
TYPICAL APPLICATIONS
Voltage Controlled State Variable Filter
LT1228 TA18
–
+
–
+
gm
CFA
LOWPASS
OUTPUT
8
3
2
1k
4
1
6
100
18pF
–5V
3.3k
7
5
–
+
–
+
gm
CFA
BANDPASS
OUTPUT
8
3
2
1k
4
1
6
100
18pF
–5V
3.3k
7
5
100
VIN
5V
3k
–
+
100pF
LT1006
1k
180
10k
VC
51k
–5V
2N3906
3.3k
fO = 100kHz AT VC = 0V
fO = 200kHz AT VC = 1V
fO = 400kHz AT VC = 2V
fO = 800kHz AT VC = 3V
fO = 1.6MHz AT VC = 4V
The state variable filter has both lowpass and bandpass
outputs.EachLT1228isconfiguredasavariableintegrator
whose frequency is set by the attenuators, the capacitors
and the set current. Because the integrators have both
positive and negative inputs, the additional op amp nor-
mally required is not needed. The input attenuators set
the circuit up to handle 3VP–P signals.
The set current is generated with a simple circuit that
gives logarithmic voltage to current control. The two PNP
transistors should be a matched pair in the same package
for best accuracy. If discrete transistors are used, the
51k resistor should be trimmed to give proper frequency
response with VC equal zero. The circuit generates 100A
for VC equal zero volts and doubles the current for every
additional volt. The two 3k resistors divide the current
between the two LT1228s. Therefore the set current of
each amplifier goes from 50A to 800A for a control
voltage of 0V to 4V. The resulting filter is at 100kHz for VC
equal zero, and changes it one octave/V of control input.
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| LT1228IS8#PBF | IC CRNT FEEDBK AMP 100MHZ 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1228IS8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:100MHz Current Feedback Amplifier with DC Gain Control |
| LT1228IS8#PBF | 功能描述:IC CRNT FEEDBK AMP 100MHZ 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:13 V/µs 增益带宽积:3MHz -3db带宽:- 电流 - 输入偏压:65pA 电压 - 输入偏移:3000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| LT1228IS8#TRPBF | 功能描述:IC CRNT FEEDBK AMP 100MHZ 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:13 V/µs 增益带宽积:3MHz -3db带宽:- 电流 - 输入偏压:65pA 电压 - 输入偏移:3000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| LT1228M | 制造商:LINER 制造商全称:Linear Technology 功能描述:100MHz Current Feedback Amplifier with DC Gain Control |
| LT1228MJ8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:100MHz Current Feedback Amplifier with DC Gain Control |
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