参数资料
| 型号： | LT1055S8 |
| 厂商： | Linear Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC PREC OP-AMP JFET HI-SPD 8SOIC |
| 标准包装： | 100 |
| 放大器类型： | J-FET |
| 电路数： | 1 |
| 转换速率： | 12 V/µs |
| 增益带宽积： | 4.5MHz |
| 电流 - 输入偏压： | 30pA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 2.8mA |
| 电压 - 电源，单路/双路(±)： | ±5 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 |
10
LT1055/LT1056
10556fc
APPLICATIONS INFORMATION
WU
U
The voltage noise spectrum is characterized by a low 1/f
corner in the 20Hz to 30Hz range, significantly lower than
on other competitive JFET input op amps. Of particular
interest is the fact that with any JFET IC amplifier, the
frequency location of the 1/f corner is proportional to the
square root of the internal gate leakage currents and,
therefore, noise doubles every 20
°C. Furthermore, as
illustrated in the noise versus chip temperature curves,
the 0.1Hz to 10Hz peak-to-peak noise is a strong function
of temperature, while wideband noise (f0 = 1kHz) is
practically unaffected by temperature.
Consequently, for optimum low frequency noise, chip
temperature should be minimized. For example, operating
an LT1056 at
±5V supplies or with a 20°C/W case-to-
ambient heat sink reduces 0.1Hz to 10Hz noise from
typically 2.5
VP-P (±15V, free-air) to 1.5VP-P. Similiarly,
the noise of an LT1055 will be 1.8
VP-P typically because
of its lower power dissipation and chip temperature.
High Speed Operation
Settling time is measured in the test circuit shown. This
test configuration has two features which eliminate prob-
lems common to settling time measurments: (1) probe
capacitance is isolated from the “false summing” node,
and (2) it does not require a “flat top” input pulse since the
input pulse is merely used to steer current through the
diode bridges. For more details, please see Application
Note 10.
As with most high speed amplifiers, care should be
taken with supply decoupling, lead dress and component
placement.
When the feedback around the op amp is resistive (RF), a
pole will be created with RF, the source resistance and
capacitance (RS, CS), and the amplifier input capacitance
(CIN ≈ 4pF). In low closed-loop gain configurations and
with RS and RF in the kilohm range, this pole can create
excess phase shift and even oscillation. A small capacitor
(CF) in parallel with RF eliminates this problem. With RS
(CS + CIN) = RFCF, the effect of the feedback pole is
completely removed.
0.01 DISC
+
–
+
15V
–15V
15k
10k
4.7k
10
F
SOLID
TANTALUM
10
F
SOLID
TANTALUM
10
F
SOLID
TANTALUM
10
F
SOLID TANTALUM
10pF (TYPICAL)
10k
PULSE GEN
INPUT
(5V MIN STEP)
2k
0.01 DISC
50
2W
LT1055
LT1056
AMPLIFIER
UNDER
TEST
AUT OUTPUT
HP5082-8210
HEWLETT
PACKARD
15V
–15V
= 1N4148
–15V
1/2
U440
1/2
U440
50
3
3
100
DC ZERO
2N160
2N5160
2N3866
LT1055/56 AI04
OUTPUT
TO SCOPE
Settling Time Test Circuit
–
+
RS
RF
CF
CS
CIN
OUTPUT
LT1055/56 AI03
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1055S8#PBF | 功能描述:IC PREC OP-AMP JFET HI-SPD 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 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:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
| LT1055S8#TR | 功能描述:IC OPAMP JFET PREC HI SPD 8SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 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:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
| LT1055S8#TRPBF | 功能描述:IC PREC OP-AMP JFET HI-SPD 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 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:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
| LT1056AMH/883 | 制造商:Linear Technology 功能描述:PRECISION, HIGH SPEED, JFET INPUT OPERATIONAL AMPLIFIERS |
| LT1056CH | 制造商:Linear Technology 功能描述:OP Amp Single GP ±20V 8-Pin TO-5 制造商:Linear Technology 功能描述:OP Amp Single GP 20V 8-Pin TO-5 |
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