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| 型号： | LT6200CS8-10#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/26页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP R-R I/O 1.6GHZ 8SOIC |
| 标准包装： | 100 |
| 放大器类型： | 缓冲器 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 450 V/µs |
| 增益带宽积： | 1.6GHz |
| 电流 - 输入偏压： | 23µA |
| 电压 - 输入偏移： | 2500µV |
| 电流 - 电源： | 20mA |
| 电流 - 输出 / 通道： | 90mA |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 12.6 V，±1.25 V ~ 6.3 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： | 管件 |
LT6200/LT6200-5
LT6200-10/LT6201
20
62001ff
applicaTions inForMaTion
Amplifier Characteristics
Figure 1 shows a simplified schematic of the LT6200
family, which has two input differential amplifiers in paral-
lel that are biased on simultaneously when the common
mode voltage is at least 1.5V from either rail. This topology
allows the input stage to swing from the positive supply
voltage to the negative supply voltage. As the common
mode voltage swings beyond VCC– 1.5V, current source I1
saturates and current in Q1/Q4 is zero. Feedback is main-
tained through the Q2/Q3 differential amplifier, but with
an input gm reduction of one-half. A similar effect occurs
with I2 when the common mode voltage swings within
1.5V of the negative rail. The effect of the gm reduction is
a shift in the VOS as I1 or I2 saturate.
Input bias current normally flows out of the “+” and “–”
inputs. The magnitude of this current increases when the
input common mode voltage is within 1.5V of the negative
rail, and only Q1/Q4 are active. The polarity of this current
reverses when the input common mode voltage is within
1.5V of the positive rail and only Q2/Q3 are active.
The second stage is a folded cascode and current mir-
ror that converts the input stage differential signals to a
single ended output. Capacitor C1 reduces the unity cross
frequency and improves the frequency stability with-
out degrading the gain bandwidth of the amplifier. The
differential drive generator supplies current to the output
transistors that swing from rail-to-rail.
The LT6200-5/LT6200-10 are decompensated op amps
for higher gain applications. These amplifiers maintain
identical DC specifications with the LT6200, but have a
reduced Miller compensation capacitor CM. This results
in a significantly higher slew rate and gain bandwidth
product.
Input Protection
There are back-to-back diodes, D1 and D2, across the
+ and – inputs of these amplifiers to limit the differential
input voltage to ±0.7V. The inputs of the LT6200 family
do not have internal resistors in series with the input
transistors. This technique is often used to protect the
input devices from overvoltage that causes excessive
currents to flow. The addition of these resistors would
significantly degrade the low noise voltage of these
amplifiers. For instance, a 100Ω resistor in series with
each input would generate 1.8nV/√Hz of noise, and the
total amplifier noise voltage would rise from 0.95nV/√Hz
to 2.03nV/√Hz. Once the input differential voltage ex-
ceeds ±0.7V, steady-state current conducted though
the protection diodes should be limited to ±40mA.
This implies 25Ω of protection resistance per volt of
continuous overdrive beyond ±0.7V. The input diodes
are rugged enough to handle transient currents due to
amplifier slew rate overdrive or momentary clipping
without these resistors.
DIFFERENTIAL
DRIVE
GENERATOR
R1
R2
R3
R4
R5
Q2
Q3
Q5
Q6
Q9
Q8
Q7
Q10
Q11
Q1
Q4
I1
I2
D3
D2
D1
DESD2
DESD4
DESD3
DESD1
DESD5
DESD8
DESD7
DESD6
+
–
CM
C1
+V
–V
+V
–V
V+
V–
6203/04 F01
BIAS
VSHDN
Figure 1. Simplified Schematic
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT6200CS8-10TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:165MHz, Rail-to-Rail Input and Output, 0.95nV/√Hz Low Noise, Op Amp Family |
| LT6200CS8-5 | 功能描述:IC OPAMP R-R I/O 800MHZ 8SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
| LT6200CS8-5#PBF | 功能描述:IC OPAMP R-R I/O 800MHZ 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
| LT6200CS8-5#TR | 功能描述:IC OP AMP 800MHZ R-R I/O 8-SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
| LT6200CS8-5#TRPBF | 功能描述:IC OPAMP R-R I/O 800MHZ 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
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