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參數(shù)資料
| 型號(hào)： | LT2078IS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Micropower, Dual and Quad, Single Supply, Precision Op Amps |
| 中文描述： | DUAL OP-AMP, 600 uV OFFSET-MAX, 0.2 MHz BAND WIDTH, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大小： | 429K |
| 代理商： | LT2078IS8 |
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11
LT2078/LT2079
APPLICATIO
S I
N
FOR
ATIO
U
1. When the input is more than a diode drop below ground,
unlimited current will flow from the substrate (V
–
terminal) to the input. This can destroy the unit. On the
LT2078/LT2079, resistors in series with the input protect
the devices even when the input is 5V below ground.
2. When the input is more than 400mV below ground (at
25
°
C), the input stage saturates and phase reversal
occurs at the output. This can cause lockup in servo
systems. Due to a unique phase reversal protection cir-
cuitry, the LT2078/LT2079 output does not reverse, as
illustrated in Figure 2, even when the inputs are at –1V.
W
U
Distortion
There are two main contributors of distortion in op amps:
distortion caused by nonlinear common mode rejection
and output crossover distortion as the output transitions
from sourcing to sinking current. The common mode
rejection of the LT2078/LT2079 is very good, typically
108dB. Therefore, as long as the input operates in the
normal common mode range, there will be very little
common mode induced distortion. If the op amp is oper-
ating inverting there is no common mode induced distor-
tion. Crossover distortion will increase as the output load
resistance decreases. For the lowest distortion the LT2078/
LT2079 should be operated with the output always sourc-
ing current, this is usually accomplished by putting a
resistor from the output to V
–
. In an inverting configura-
tion with no load, the output will source and sink current
through the feedback resistor. High value feedback resis-
tors will reduce crossover distortion and maintain
micropower operation.
Matching Specifications
In many applications the performance of a system de-
pends on the matching between two op amps, rather than
Figure 2. Voltage Follower with Input Exceeding the Negative Common Mode Range (V
S
= 5V, 0V)
2V
0V
6V
INPUT
–1V TO 5V
1ms/DIV
LT2078/79 F01a
1ms/DIV
LT2078/LT2079 NO PHASE REVERSAL
LT2078/79 F01C
2V
0V
4V
1ms/DIV
OP-90 EXHIBITS OUTPUT PHASE REVERSAL
LT2078/79 F01b
2V
0V
4V
4V
Table 1
LT2078AC/LT2079AC/LT2078AI/LT2079AI
50% YIELD
30
40
0.5
6
0.12
120
117
LT2078C/LT2079C/LT2078I/LT2079I
50% YIELD
50
50
0.6
6
0.15
117
117
PARAMETER
V
OS
Match,
V
OS
98% YIELD
110
150
1.2
8
0.4
100
105
98% YIELD
190
250
1.8
10
0.5
97
102
UNITS
LT2078
LT2079
μ
V
μ
V
Temperature Coefficient
V
OS
Average Noninverting I
B
Match of Noninverting I
B
CMRR Match
PSRR Match
μ
V/
°
C
nA
nA
dB
dB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT2078 | Micropower, Dual and Quad, Single Supply, Precision Op Amps |
| LT2078ACS8 | Micropower, Dual and Quad, Single Supply, Precision Op Amps |
| LT2078CS8 | Micropower, Dual and Quad, Single Supply, Precision Op Amps |
| LT2079 | Micropower, Dual and Quad, Single Supply, Precision Op Amps |
| LT2079AC | Micropower, Dual and Quad, Single Supply, Precision Op Amps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT2078IS8#PBF | 功能描述:IC OPAMP MICROPOWER DUAL 8-SOIC RoHS:是 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):4 輸出類(lèi)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(lèi)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(chēng):LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| LT2078IS8#TR | 功能描述:IC OPAMP PREC DUAL MCRPWR 8SOIC RoHS:否 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 |
| LT2078IS8#TRPBF | 功能描述:IC OPAMP MICROPOWER DUAL 8-SOIC 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 |
| LT2079 | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Micropower, Dual and Quad, Single Supply, Precision Op Amps |
| LT2079AC | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Micropower, Dual and Quad, Single Supply, Precision Op Amps |
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