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参数资料
| 型号： | LT1228IN8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/22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
17
1228fd
TYPICAL APPLICATIONS
Filters
LT1228 TA16
–
+
–
+
gm
CFA
VOUT
8
3
2
RF
1k
R2
120
5
1
6
R3
120
C
330pF
fC =
×
R3A
1k
ISET
RG
1k
R2A
1k
VIN
LOWPASS
INPUT
VIN
HIGHPASS
INPUT
fC = 109 ISET FOR THE VALUES SHOWN
10
2π
ISET
C
RF + 1
RG
R2
R2 + R2A
Single Pole Low/High/Allpass Filter
Allpass Filter Phase Response
FREQUENCY (Hz)
10k
PHASE
SHIFT
(DEGREES)
–90
–45
0
100k
1M
10M
LT1228 TA17
–135
–180
1mA SET CURRENT
100A SET CURRENT
Using the variable transconductance of the LT1228 to
make variable filters is easy and predictable. The most
straight forward way is to make an integrator by putting a
capacitor at the output of the transconductance amp and
buffering it with the current feedback amplifier. Because
the input bias current of the current feedback amplifier
must be supplied by the transconductance amplifier, the
set current should not be operated below 10A. This limits
the filters to about a 100:1 tuning range.
The Single Pole circuit realizes a single pole filter with a
corner frequency (fC) proportional to the set current. The
values shown give a 100kHz corner frequency for 100A
set current. The circuit has two inputs, a lowpass filter
input and a highpass filter input. To make a lowpass filter,
ground the highpass input and drive the lowpass input.
Conversely for a highpass filter, ground the lowpass input
and drive the highpass input. If both inputs are driven, the
result is an allpass filter or phase shifter. The allpass has
flat amplitude response and 0° phase shift at low frequen-
cies, going to –180° at high frequencies. The allpass filter
has –90° phase shift at the corner frequency.
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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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