参数资料
| 型号： | LT1497CS8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP CFA DUAL 50MHZ 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 电流反馈 |
| 电路数： | 2 |
| 转换速率： | 900 V/µs |
| -3db带宽： | 50MHz |
| 电流 - 输入偏压： | 7µA |
| 电压 - 输入偏移： | 3000µV |
| 电流 - 电源： | 7mA |
| 电流 - 输出 / 通道： | 220mA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 30 V，±2 V ~ 15 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
10
LT1497
the normally active emitter of Q2 will turn off as the entire
current available from the current source is used to slew
the base of Q3. The base of Q4 is driven by Q1 without slew
limitation. When the differential input voltage exceeds two
diode drops (about 1.4V) the extra clamp emitter on Q1
turns on and drives the base of Q3 directly. Once the base
of Q3 has been driven within 1.4V of its final value, the
clamp emitter of Q1 turns off and the node must finish
slewing using the current source.
This effect can be seen in Figure 2 which shows the large
signal behavior in a gain of 1 on
±15V supplies. The
clamping action enhances the slew rate beyond the input
limitation, but always leads to slew overshoot after the
clamps turn off. Figure 3 shows that for higher gain
APPLICATIONS INFORMATION
WU
U
configurations there is much less slew rate enhancement
because the input only moves 2V, barely enough to turn on
the input clamps. In inverting configurations as shown in
Figure 4 the noninverting input does not move so there is
no input slew rate limitation. Slew overshoot is due to
capacitance on the inverting input and can be reduced with
a larger feedback resistor.
The output slew rate is set by the value of the feedback
resistors and the internal capacitance. Larger feedback
resistors will reduce the slew rate as will lower supply
voltages, similar to the way the bandwidth is reduced.
The larger feedback resistors will also cut back on slew
overshoot.
Figure 2. Large-Signal Response
AV = 1
VS = ±15V
RF = 560
RL = 100
1497 F02
Figure 3. Large-Signal Response
AV = 10
VS = ±15V
RF = 560
RL = 100
1497 F03
RG = 62
Figure 4. Large-Signal Response
AV = –1
VS = ±15V
RF = RG = 560
RL = 100
1497 F04
One Amplifier
SI
PLIFIED SCHE ATIC
W
1497 SS
+IN
–IN
VOUT
V+
V–
Q2
Q1
Q4
Q11
Q12
Q14
Q9
Q8
Q7
Q13
Q6
Q3
Q5
Q10
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| LT1498 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single/Dual/Quad 60MHz, 20V/us, Low Power, Rail-to-Rail Input and Output Precision Op Amps |
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| LT1498CN8 | 功能描述:IC OP-AMP R-R IN/OUT DUAL 8-DIP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:C-Load™ 标准包装:2,500 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:350 V/µs 增益带宽积:180MHz -3db带宽:320MHz 电流 - 输入偏压:12.5µA 电压 - 输入偏移:800µV 电流 - 电源:15mA 电流 - 输出 / 通道:85mA 电压 - 电源，单路/双路(±):2.5 V ~ 12.6 V，±1.25 V ~ 6.3 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MSOP 包装:带卷 (TR) |
| LT1498CN8#PBF | 功能描述:IC OP-AMP R-R IN/OUT DUAL 8-DIP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:C-Load™ 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| LT1498CN8PBF | 制造商:Linear Technology 功能描述:LT1498CN8PBF |
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