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| 型號(hào)： | LT1991 |
| 廠商： | Linear Integrated Systems |
| 英文描述： | nullPrecision, 100UA Gain Selectable Amplifier |
| 中文描述： | nullPrecision，100uA的可選增益放大器 |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大?。?/td> | 303K |
| 代理商： | LT1991 |
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LT1991
1
1991fb
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Patent Pending.
Precision, 100
μ
A
Gain Selectable Amplifier
TYPICAL APPLICATIO
U
FEATURES
DESCRIPTIOU
The LT
1991 combines a precision operational amplifier
with eight precision resistors to form a one-chip solution
for accurately amplifying voltages. Gains from –13 to 14
with a gain accuracy of 0.04% can be achieved using no
external components. The device is particularly well suited
for use as a difference amplifier, where the excellent
resistor matching results in a common mode rejection
ratio of greater than 75dB.
The amplifier features a 50
μ
V maximum input offset
voltage and a gain bandwidth product of 560kHz. The
device operates from any supply voltage from 2.7V to 36V
and draws only 100
μ
A supply current on a 5V supply. The
output swings to within 40mV of either supply rail.
The resistors have excellent matching, 0.04% over tem-
perature for the 450k resistors. The matching temperature
coefficent is guaranteed less than 3ppm/
°
C. The resistors
are extremely linear with voltage, resulting in a gain
nonlinearity of less than 10ppm.
The LT1991 is fully specified at 5V and
±
15V supplies and
from –40
°
C to 85
°
C. The device is available in space
saving 10-lead MSOP and low profile (0.8mm) 3mm
×
3mm DFN packages.
APPLICATIU
■
Pin Configurable as a Difference Amplifier,
Inverting and Noninverting Amplifier
■
Difference Amplifier
Gain Range 1 to 13
CMRR >75dB
■
Noninverting Amplifier
Gain Range 0.07 to 14
■
Inverting Amplifier
Gain Range –0.08 to –13
■
Gain Error <0.04%
■
Gain Drift < 3ppm/
°
C
■
Wide Supply Range: Single 2.7V to Split
±
18V
■
Micropower: 100
μ
A Supply Current
■
Precision: 50
μ
V Maximum Input Offset Voltage
■
560kHz Gain Bandwidth Product
■
Rail-to-Rail Output
■
Space Saving 10-Lead MSOP and DFN Packages
■
Handheld Instrumentation
■
Medical Instrumentation
■
Strain Gauge Amplifiers
■
Differential to Single-Ended Conversion
Rail-to-Rail Gain = 1 Difference Amplifier
Distribution of Resistor Matching
–
+
5V
V
IN
V
M(IN)
V
P(IN)
–
+
V
= V
+
V
IN
SWING 40mV TO
EITHER RAIL
R
OUT
<0.1
V
REF
=
2.5V
1991 TA01
INPUT RANGE
–0.5V TO 5.1V
R
IN
= 900k
LT1991
450k
50k
50k
150k
150k
450k
450k
4pF
450k
4pF
RESISTOR MATCHING (%)
P
0.04
1991TA01b
–0.02
0
0.02
40
35
30
25
20
15
10
5
0
–0.04
450k RESISTORS
LT1991A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1991_12 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision, 100μA Gain Selectable Amplifier |
| LT1991ACDD | 制造商:LINEAR 功能描述: 制造商:Linear Technology 功能描述: |
| LT1991ACDD#PBF | 功能描述:IC AMP PREC GAIN SELECT 10-DFN 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:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| LT1991ACDD#TRPBF | 功能描述:IC AMP PREC GAIN SELECT 10-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁(yè)面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
| LT1991ACDD-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision, 100μA Gain Selectable Amplifi er |
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