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參數(shù)資料
| 型號(hào)： | LT1490A |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual Micropower Rail-to-Rail Input and Output Op Amps(雙路微功耗，滿幅度輸入和輸出運(yùn)算放大器) |
| 中文描述： | 雙微軌至軌輸入和輸出運(yùn)算放大器（雙路微功耗，滿幅度輸入和輸出運(yùn)算放大器） |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 227K |
| 代理商： | LT1490A |
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1
LT1490A/LT1491A
Dual/Quad Over-The-Top
Micropower Rail-to-Rail
Input and Output Op Amps
DESCRIPTIOU
I
Low Input Offset Voltage: 500
μ
V Max
I
Output Swings to 10mV Max from V
–
I
Rail-to-Rail Input and Output
I
Micropower: 50
μ
A/Amplifier Max
I
MSOP Package
I
Over-The-Top
TM
Input Common Mode Range Extends
44V Above V
–
, Independent of V
+
I
Specified on 3V, 5V and
±
15V Supplies
I
High Output Current: 20mA
I
Output Drives 10,000pF with Output Compensation
I
Reverse Battery Protection to 18V
I
No Supply Sequencing Problems
I
High Voltage Gain: 1500V/mV
I
High CMRR: 98dB
I
No Phase Reversal
I
Gain Bandwidth Product: 200kHz
APPLICATIU
The LT
1490A/LT1491A are enhanced versions of the popu-
lar LT1490/LT1491 dual and quad op amps with improved
input offset voltage (500
μ
V max) and output voltage swing
(10mV max from V
–
). They are recommended as replace-
ments for the LT1490/LT1491 in all new designs. The
LT1490A/LT1491A operate on all single and split supplies
with a total voltage of 2V to 44V, drawing only 40
μ
A of
quiescent current per amplifier. These amplifiers are reverse
supply protected; they draw virtually no current for reverse
supply up to 18V. The input range of the LT1490A/LT1491A
includes both supplies and the output swings to both sup-
plies. Unlike most micropower op amps, the LT1490A/
LT1491A can drive heavy loads; their rail-to-rail outputs drive
20mA. The LT1490A/LT1491A are unity-gain stable and
drive all capacitive loads up to 10,000pF when optional
0.22
μ
F and 150
compensation is used.
The LT1490A/LT1491A have a unique input stage that oper-
ates and remains high impedance when above the positive
supply. The inputs take 44V both differential and common
mode even when operating on a 3V supply. Built-in resis-
tors protect the inputs for faults below the negative supply
up to 15V. There is no phase reversal of the output for inputs
15V below V
–
or 44V above V
–
, independent of V
+
.
The LT1490A dual op amp is available in the 8-pin MSOP,
PDIP and SO packages. The quad LT1491A is available in
the 14-pin SO and PDIP packages.
I
Battery- or Solar-Powered Systems
Portable Instrumentation
Sensor Conditioning
I
Supply Current Sensing
I
Battery Monitoring
I
Micropower Active Filters
I
4mA to 20mA Transmitters
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a trademark of Linear Technology Corporation.
Battery Monitor
–
+
–
+
RA
2k
Q2
2N3904
S1
S1 = OPEN, GAIN = 1
S1 = CLOSED, GAIN = 10
R
A
= R
V
S
= 5V, 0V
10k
90.9k
V
OUT
LOGIC
1490A TA01
LOGIC HIGH (5V) = CHARGING
LOGIC LOW (0V) = DISCHARGING
R
G
10k
Q1
2N3904
R
S
0.2
CHARGER
VOLTAGE
1/4 LT1491A
1/4 LT1491A
R
A
′
2k
R
B
2k
V
BATT
= 12V
I
BATT
+
R
B
′
2k
LOAD
–
1/4 LT1491A
+
–
+
OUT
S
)(R
G
/R
A
)(GAIN)
V
OUT
GAIN
I
BATT
= (R
1/4 LT1491A
FEATURES
TYPICAL APPLICATIO
U
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1491A | Quad Micropower Rail-to-Rail Input and Output Op Amps(四路微功耗，滿幅度輸入和輸出運(yùn)算放大器) |
| LT1492 | 5MHz, 3V/us, Low Power Single Supply, Dual and Quad Precision Op Amps |
| LT1492CN8 | 5MHz, 3V/us, Low Power Single Supply, Dual and Quad Precision Op Amps |
| LT1492CS8 | 5MHz, 3V/us, Low Power Single Supply, Dual and Quad Precision Op Amps |
| LT1493 | 5MHz, 3V/us, Low Power Single Supply, Dual and Quad Precision Op Amps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1490A_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps |
| LT1490ACDD | 功能描述:IC OPAMP R-R IN/OUT DUAL 8DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:Digi-Reel® 其它名稱:MAX4475AUT#TG16DKR |
| LT1490ACDD#PBF | 功能描述:IC OPAMP R-R IN/OUT DUAL 8DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| LT1490ACDD#PBF | 制造商:Linear Technology 功能描述:Operational Amplifier (Op-Amp) IC |
| LT1490ACDD#TR | 功能描述:IC OP AMP R-R IN/OUT DUAL 8-DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:電流檢測(cè) 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:- 增益帶寬積:125kHz -3db帶寬:- 電流 - 輸入偏壓:- 電壓 - 輸入偏移:100µV 電流 - 電源:1.1µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-WFBGA，CSPBGA 供應(yīng)商設(shè)備封裝:4-UCSP（2x2） 包裝:剪切帶 (CT) 其它名稱:MAX9634WERS+TCT |
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