参数资料
| 型号： | LT1168ACS8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC AMP INSTR PREC PROG 8-SOIC |
| 标准包装： | 100 |
| 放大器类型： | 仪表 |
| 电路数： | 1 |
| 转换速率： | 0.5 V/µs |
| 增益带宽积： | 400kHz |
| 电流 - 输入偏压： | 40pA |
| 电压 - 输入偏移： | 15µV |
| 电流 - 电源： | 350µA |
| 电流 - 输出 / 通道： | 32mA |
| 电压 - 电源，单路/双路(±)： | 4.6 V ~ 36 V，±2.3 V ~ 18 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 |
| 产品目录页面： | 1323 (CN2011-ZH PDF) |
14
LT1168
1168fa
The LT1168 is a low power precision instrumentation
amplifier that requires only one external resistor to accu-
rately set the gain anywhere from 1 to 1000. The LT1168
is trimmed for critical DC parameters such as gain error
(0.04%, G = 10), input offset voltage (40
V, RTI), CMRR
(90dB min, G = 1) and PSRR (103dB min, G = 1). These
trims allow the amplifier to achieve very high DC accuracy.
The LT1168 achieves low input bias current of just 250pA
(max) through the use of superbeta processing. The
output can handle capacitive loads up to 1000pF in any
gain configuration and the inputs are protected against
ESD strikes up to
±13kV (human body).
Input Protection
The LT1168 can safely handle up to
±20mA of input
current in an overload condition. Adding an external 5k
input resistor in series with each input allows DC input
fault voltage up to
±100V and improves the ESD immunity
to
±8kV (contact) and ±15kV (air discharge), which is the
IEC 1000-4-2 level 4 specification. If lower value input
resistors must be used, a clamp diode from the positive
supply to each input will maintain the IEC 1000-4-2
specification to level 4 for both air and contact discharge.
A 2N4393 drain/source to gate is a good low leakage diode
for use with resistors between 1k and 20k, see Figure 6.
The input resistors should be carbon and not metal film or
carbon film in order to withstand the fault conditions.
path. The first example is of a purely differential signal
source with a 10k
inputcurrentpathtoground.Sincethe
impedance of the signal source is low, only one resistor is
needed. Two matching resistors are needed for higher
impedance signal sources as shown in the second
example. Balancing the input impedance improves both
common mode rejection and DC offset.
Figure 5. Providing an Input Common Mode Current Path
10k
1168 F05
THERMOCOUPLE
200k
MICROPHONE,
HYDROPHONE,
ETC
200k
CENTER-TAP PROVIDES
BIAS CURRENT RETURN
–
+
LT1168
–
+
LT1168
–
+
LT1168
Figure 6. Input Protection
APPLICATIO S I FOR ATIO
WU
UU
–VS
1168 F06
+VS
J2
2N4393
J1
2N4393
OUT
OPTIONAL FOR
RIN < 20k
RG
RIN
–
+
LT1168
REF
RFI Reduction
In many industrial and data acquisition applications,
instrumentation amplifiers are used to accurately amplify
small signals in the presence of large common mode
THEORY OF OPERATIO
U
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1168AI | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Power, Single Resistor Gain Programmable, Micropower Precision Instrumentation Amplifier |
| LT1168AIN8 | 功能描述:IC AMP INSTR PROG PREC LP 8DIP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作温度:-40°C ~ 85°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-SOIC 包装:带卷 (TR) |
| LT1168AIN8#PBF | 功能描述:IC AMP INSTR PROG PREC LP 8DIP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作温度:-40°C ~ 85°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) |
| LT1168AIS8 | 功能描述:IC AMP INSTR PROG PREC LP 8SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作温度:-40°C ~ 85°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-SOIC 包装:带卷 (TR) |
| LT1168AIS8#PBF | 功能描述:IC AMP INSTR PROG PREC LP 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作温度:-40°C ~ 85°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-SOIC 包装:带卷 (TR) |
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