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參數(shù)資料
| 型號(hào)： | LT1028CS8#TR |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 6/28頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP LOW NOISE HS 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 15 V/µs |
| 增益帶寬積： | 75MHz |
| 電流 - 輸入偏壓： | 30nA |
| 電壓 - 輸入偏移： | 20µV |
| 電流 - 電源： | 7.6mA |
| 電壓 - 電源，單路/雙路(±)： | ±4 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
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LT1028/LT1128
14
1028fb
Figure 7. Test Circuit for Offset Voltage
and Offset Voltage Drift with Temperature
–
+
RF
1028 F08
OUTPUT
6V/s
–
+
–15V
10k*
200*
LT1028
LT1128
1028 F07
10k*
VO = 100VOS
* RESISTORS MUST HAVE LOW
THERMOELECTRIC POTENTIAL
VO
6
7
2
4
3
15V
applicaTions inForMaTion
General
TheLT1028/LT1128seriesdevicesmaybeinserteddirectly
into OP-07, OP-27, OP-37, LT1007 and LT1037 sockets
withorwithoutremovalofexternalnullingcomponents.In
addition,theLT1028/LT1128maybefittedto5534sockets
with the removal of external compensation components.
Offset Voltage Adjustment
The input offset voltage of the LT1028/LT1128 and its drift
with temperature, are permanently trimmed at wafer test-
ing to a low level. However, if further adjustment of VOS is
necessary, the use of a 1k nulling potentiometer will not
degrade drift with temperature. Trimming to a value other
than zero creates a drift of (VOS/300)V/°C, e.g., if VOS
is adjusted to 300V, the change in drift will be 1V/°C.
The adjustment range with a 1k pot is approximately
±1.1mV.
Unity-Gain Buffer Applications (LT1128 Only)
When RF ≤ 100Ω and the input is driven with a fast, large-
signalpulse(>1V),theoutputwaveformwilllookasshown
in the pulsed operation diagram (Figure 8).
–
+
6
1k
INPUT
LT1028
LT1128
1028 F06
7
8
1
2
3
4
OUTPUT
–15V
15V
Figure 6
Figure 8
Offset Voltage and Drift
Thermocouple effects, caused by temperature gradients
across dissimilar metals at the contacts to the input termi-
nals, can exceed the inherent drift of the amplifier unless
proper care is exercised. Air currents should be minimized,
package leads should be short, the two input leads should
be close together and maintained at the same temperature.
The circuit shown in Figure 7 to measure offset voltage
is also used as the burn-in configuration for the LT1028/
LT1128.
During the fast feedthrough-like portion of the output, the
input protection diodes effectively short the output to the
input and a current, limited only by the output short-circuit
protection, will be drawn by the signal generator. With
RF ≥ 500Ω, the output is capable of handling the current
requirements (IL ≤ 20mA at 10V) and the amplifier stays
in its active mode and a smooth transition will occur.
As with all operational amplifiers when RF > 2k, a pole will
be created with RF and the amplifier’s input capacitance,
creating additional phase shift and reducing the phase
margin. A small capacitor (20pF to 50pF) in parallel with
RF will eliminate this problem.
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| LT1028CSW | 功能描述:IC OP-AMP LOW NOISE SNGL 16-SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:13 V/µs 增益帶寬積:3MHz -3db帶寬:- 電流 - 輸入偏壓:65pA 電壓 - 輸入偏移:3000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| LT1028CSW#PBF | 功能描述:IC OP-AMP LOW NOISE SNGL 16-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:13 V/µs 增益帶寬積:3MHz -3db帶寬:- 電流 - 輸入偏壓:65pA 電壓 - 輸入偏移:3000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| LT1028CSW#TR | 功能描述:IC OP AMP LOW NOISE HS 16SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 放大器類型:音頻 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:5 V/µs 增益帶寬積:12MHz -3db帶寬:- 電流 - 輸入偏壓:100nA 電壓 - 輸入偏移:500µV 電流 - 電源:6mA 電流 - 輸出 / 通道:50mA 電壓 - 電源，單路/雙路(±):4 V ~ 32 V，±2 V ~ 16 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
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