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參數(shù)資料
| 型號(hào)： | LT1113ACN8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual Low Noise, Precision, JFET Input Op Amps |
| 中文描述： | DUAL OP-AMP, 2500 uV OFFSET-MAX, 5.6 MHz BAND WIDTH, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 244K |
| 代理商： | LT1113ACN8 |
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12
LT1113
U
S
A
O
PPLICATI
IU
U
Typical performance of the instrumentation amplifier:
Input offset voltage = 0.8mV
Input bias current = 320pA
Input offset current = 10pA
Input resistance = 10
11
Input noise = 3.4
μ
V
P-P
High Speed Operation
The low noise performance of the LT1113 was achieved by
making the input JFET differential pair large to maximize
the first stage gain. Increasing the JFET geometry also
increases the parasitic gate capacitance, which if left
unchecked, can result in increased overshoot and ringing.
When the feedback around the op amp is resistive (R
F
),
a pole will be created with R
F
, the source resistance and
capacitance (R
S
,C
S
), and the amplifier input capacitance
(C
IN
= 27pF). In closed loop gain configurations and
with R
S
and R
F
in the kilohm range (Figure 5), this pole
can create excess phase shift and even oscillation.
A small capacitor (C
F
) in parallel with R
F
eliminates this
problem. With R
S
(C
S
+ C
IN
) = R
F
C
F
, the effect of the
feedback pole is completely removed.
Figure 5.
The concepts of common mode and power supply
rejection ratio match (
CMRR and
PSRR) are best
demonstrated with a numerical example:
Assume CMRR
A
= +50
μ
V/V or 86dB,
and CMRR
B
= + 39
μ
V/V or 88dB,
then
CMRR = 11
μ
V/V or 99dB;
if CMRR
B
= -39
μ
V/V which is still 88dB,
then
CMRR = 89
μ
V/V or 81dB
Clearly the LT1113, by specifying and guaranteeing all of
these matching parameters, can significantly improve the
performance of matching-dependent circuits.
Figure 4. Three Op Amp Instrumentation Amplifier
4
OUTPUT
C1
50pF
R7
10k
R6
10k
1113 F04
GAIN =
BANDWIDTH =
INPUT REFERRED NOISE =
WIDEBAND NOISE DC TO 400kHz =
C
L
≤
100
400kHz
6.6nV/
√
Hz AT 1kHz
6.6
μ
V
RMS
0.01
μ
F
IN
–
15V
8
1
–15V
–
+
–
+
1/2
LT1113
IC1
1/2
LT1113
IC1
IN
+
R3
1k
R2
200
R1
1k
7
6
5
3
2
R4
1k
1
2
C
L
3
–
+
1/2
LT1113
IC2
R5
1k
–
+
1113 F05
OUTPUT
R
F
R
S
C
S
C
IN
C
F
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1113ACN8#PBF | 功能描述:IC PREC OP-AMP JFET DUAL 8-DIP RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:J-FET 電路數(shù):2 輸出類(lèi)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(lèi)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 |
| LT1113AM | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Low Noise, Precision, JFET Input Op Amps |
| LT1113AMJ8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Low Noise, Precision, JFET Input Op Amps |
| LT1113C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Low Noise, Precision, JFET Input Op Amps |
| LT1113CN8 | 功能描述:IC PREC OP-AMP JFET DUAL 8-DIP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類(lèi)型:通用 電路數(shù):2 輸出類(lèi)型:滿擺幅 轉(zhuǎn)換速率:350 V/µs 增益帶寬積:180MHz -3db帶寬:320MHz 電流 - 輸入偏壓:12.5µA 電壓 - 輸入偏移:800µV 電流 - 電源:15mA 電流 - 輸出 / 通道:85mA 電壓 - 電源，單路/雙路(±):2.5 V ~ 12.6 V，±1.25 V ~ 6.3 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MSOP 包裝:帶卷 (TR) |
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