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參數資料
| 型號： | LT1490IS8#PBF |
| 廠商： | Linear Technology |
| 文件頁數： | 1/12頁 |
| 文件大小： | 0K |
| 描述： | IC OP-AMP R-R IN/OUT DUAL 8-SOIC |
| 標準包裝： | 100 |
| 系列： | Over-The-Top® |
| 放大器類型： | 通用 |
| 電路數： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 0.07 V/µs |
| 增益帶寬積： | 200kHz |
| 電流 - 輸入偏壓： | 4nA |
| 電壓 - 輸入偏移： | 250µV |
| 電流 - 電源： | 50µA |
| 電流 - 輸出 / 通道： | 25mA |
| 電壓 - 電源，單路/雙路(±)： | 2 V ~ 44 V，±1 V ~ 22 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） |
| 供應商設備封裝： | 8-SO |
| 包裝： | 管件 |
1
LT1490/LT1491
Dual and Quad
Micropower Rail-to-Rail
Input and Output Op Amps
s
Rail-to-Rail Input and Output
s
Single Supply Input Range: – 0.4V to 44V
s
Micropower: 50
A/Amplifier Max
s
MSOP Package
s
Specified on 3V, 5V and
±15V Supplies
s
High Output Current: 20mA
s
Output Drives 10,000pF with Output Compensation
s
Reverse Battery Protection to 18V
s
No Supply Sequencing Problems
s
High Voltage Gain: 1500V/mV
s
High CMRR: 98dB
s
No Phase Reversal
s
Gain Bandwidth Product: 200kHz
The dual LT
1490 and quad LT1491 op amps operate on all
single and split supplies with a total voltage of 2V to 44V
drawing only 40
A of quiescent current per amplifier. These
amplifiers are reverse supply protected; they draw no current
for reverse supply up to 18V. The input range of the LT1490/
LT1491 includes both supplies and the output swings to both
supplies. Unlike most micropower op amps, the LT1490/
LT1491 can drive heavy loads; their rail-to-rail outputs drive
20mA. The LT1490/LT1491 are unity-gain stable and drive all
capacitive loads up to 10,000pF when optional 0.22
F and
150
compensation is used.
The LT1490/LT1491 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 22V. There is no phase reversal of the output for inputs
22V below V – or 44V above V –, independent of V +.
The LT1490 dual op amp is available in the 8-pin MSOP,
SO and PDIP packages. The quad LT1491 is available in
the 14-pin SO and PDIP packages.
For new designs it is recommended that the LT1490A/
LT1491A be used instead of the LT1490/LT1491. See the
LT1490A/LT1491A data sheet for details.
s
Battery- or Solar-Powered Systems
Portable Instrumentation
Sensor Conditioning
s
Supply Current Sensing
s
Battery Monitoring
s
Micropower Active Filters
s
4mA to 20mA Transmitters
–
+
–
+
RA
2k
Q2
2N3904
S1
S1 = OPEN, GAIN = 1
S1 = CLOSED, GAIN = 10
RA = RB
VS = 5V, 0V
10k
90.9k
VOUT
LOGIC
1490/91 TA01
LOGIC HIGH (5V) = CHARGING
LOGIC LOW (0V) = DISCHARGING
RG
10k
Q1
2N3904
RS
0.2
CHARGER
VOLTAGE
A
1/4 LT1491
B
1/4 LT1491
RA'
2k
RB
2k
VBATT = 12V
IBATT
+
RB'
2k
LOAD
–
+
–
+
C
1/4 LT1491
D
1/4 LT1491
VOUT
(RS)(RG/RA)(GAIN)
VOUT
GAIN
IBATT =
=
AMPS
Battery Monitor
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1491 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual and Quad Micropower Rail-to-Rail Input and Output Op Amps |
| LT1491A | 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 |
| LT1491ACDHC | 功能描述:IC OPAMP R-R QUAD MCRPWR 16DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 標準包裝:1 系列:- 放大器類型:通用 電路數:4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| LT1491ACDHC#PBF | 功能描述:IC OPAMP R-R QUAD MCRPWR 16DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 標準包裝:1 系列:- 放大器類型:通用 電路數:4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| LT1491ACDHC#TR | 功能描述:IC OPAMP R-R QUAD MCRPWR 16DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 標準包裝:1 系列:- 放大器類型:通用 電路數:4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
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