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參數(shù)資料
| 型號： | LT1722IS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
| 中文描述： | OP-AMP, 900 uV OFFSET-MAX, 200 MHz BAND WIDTH, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 326K |
| 代理商： | LT1722IS8 |
LT1722/LT1723/LT1724
13
172234fa
Power dissipation is composed of two parts. The first is
due to the quiescent supply current and the second is due
to on-chip dissipation caused by the load current.
Worst-case instantaneous power dissipation for a given
resistive load in one amplifier occurs at the maximum
supply current and when the output voltage is at half of
either supply voltage (or the maximum swing if less than
half supply voltage).
Therefore P
D(MAX)
in one amplifier is:
P
D(MAX)
= (V
+
– V
–
)(I
S(MAX)
) + (V
+
/2)
2
/R
L
or
P
D(MAX)
= (V
+
– V
–
)(I
S(MAX)
) +
(V
+
– V
O(MAX)
)(V
O(MAX)
/R
L
)
Example. Worst-case conditions are: both op amps in the
LT1723IS8 are at T
A
= 85
°
C, V
S
=
±
5V, R
L
= 150
,
V
OUT
= 2.5V.
P
D(MAX)
= 2 [(10V)(5.95mA) + (2.5V)
2
/150
] = 203mW
T
J(MAX)
= 85
°
C + (203mW)(190
°
C/W) = 124
°
C
which is less than the absolute maximum rating at 150
°
C.
APPLICATIU
W
U
U
Circuit Operation
The
LT1722/LT1723/LT1724
circuit topology is a voltage
feedback amplifier. The operation of the circuit can be
understood by referring to the Simplified Schematic. The
first stage is a folded cascode formed by the transistors
Q1 through Q4. A degeneration resistor, R, is used in the
input stage. The current mirror Q5, Q6 is bootstrapped by
Q7. The capacitor, C, assures the bandwidth and the slew
rate performance. The output stage is formed by comple-
mentary emitter followers, Q8 through Q11. The diodes
D1 and D2 protect against input reversed biasing. The
remaining part of the circuit assures optimum voltage and
current biases for all stages.
Low noise, reduced current supply, high speed and DC
accurate parameters are distinctive features of the
LT1722/
LT1723/LT1724
.
SIW
W
Q2
+IN
Q1
D1
D2
R
–IN
R2
Q6
Q7
Q9
Q10
V
S+
V
S–
OUT
1723 SS
Q11
Q8
Q4
C
V
BIAS
I
3
I
4
I
5
I
2
I
1
R1
Q5
Q3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1722IS8#PBF | 功能描述:IC PREC OPAMP 200MHZ SNGL 8-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 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:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 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) |
| LT1722IS8#TR | 功能描述:IC PREC OPAMP 200MHZ SNGL 8-SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 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:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 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) |
| LT1722IS8#TRPBF | 功能描述:IC PREC OPAMP 200MHZ SNGL 8-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 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:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 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) |
| LT1723 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| LT1723CMS8 | 功能描述:IC OPAMP PREC DUAL 200MHZ 8MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 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:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 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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