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參數(shù)資料
| 型號： | LT1413S8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Single Supply, Dual Precision Op Amp |
| 中文描述： | DUAL OP-AMP, 570 uV OFFSET-MAX, 0.95 MHz BAND WIDTH, PDSO8 |
| 封裝： | PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 272K |
| 代理商： | LT1413S8 |
7
LT1413
Single Supply Operation
The LT1413 is fully specified for single supply operation,
i.e., when the negative supply is 0V. Input common-mode
range includes ground; the output swings within a few
millivolts of ground.
If the input is more than a few hundred millivolts below
ground, two distinct problems can occur on previous
single supply designs, such as the LM124, LM158, OP-21
and OP-221.
a) 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 LT1413, the 400
resistors, in series with the input
(see Schematic Diagram), protect the devices even when
the input is 5V below ground.
b) When the input is more than 400mV below ground
(at 25
°
C), the input stage saturates (transistors Q3 and
Q4) and phase reversal occurs at the output. This can
cause lock-up in servo systems. Due to a unique phase
reversal protection circuitry (Q21, Q22, Q27, Q28), the
LT1413 outputs do not reverse, as illustrated below,
even when the inputs are at –1.5V. Keep the output of the
other amplifier out of negative saturation for the phase
reversal protection to function properly.
Since the output of the LT1413 cannot go exactly to
ground, but can only approach ground to within a few
millivolts, care should be exercised to ensure that the
output is not saturated. For example, a 1mV input signal
will cause the amplifier to set up in its linear region
in the gain 100 configuration shown below, but is not
enough to make the amplifier function properly in the
voltage-follower mode.
LT1413 27
–
+
R
5V
99R
100mV
1mV
–
+
5V
OUTPUT
SATURATED
≈
15mV
1mV
Gain 100 Amplifier
Voltage Follower
Figure 1.
Comparator Applications
The single supply operation of the LT1413 lends itself to
its use as a precision comparator with TTL compatible
output; the response time is shown below.
0
V
S
= 5V, 0V
50
μ
s/DIV
0
–100
V
S
= 5V, 0V
50
μ
s/DIV
I
O
I
O
4
APPLICATIO
N
S I
N
FOR
ATIO
N
W
Voltage Follower with Input Exceeding the Negative Common-Mode Range
Comparator Rise Response Time
10mV, 5mV, 2mV Overdrives
Comparator Fall Response Time
to 10mV, 5mV, 2mV Overdrives
4
2
0
2
0
100
6V
P-P
INPUT, –1.5V TO 4.5V
LT1413 TA21
LT1413 TA22
4V
2V
0V
LM324, LM358, OP-221
EXHIBIT OUTPUT PHASE REVERSAL
4V
2V
0V
LT1413 TA23
4V
2V
0V
LT1413
NO PHASE REVERSAL
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1413S8#PBF | 功能描述:IC PRECISION OP-AMP DUAL 8-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Differential Circuit Design Techniques for Communication Applications 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應(yīng)商設(shè)備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT |
| LT1413S8#TR | 功能描述:IC OPAMP PREC DUAL 5V HP 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
| LT1413S8#TRPBF | 功能描述:IC PRECISION OP-AMP DUAL 8-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
| LT1413S8PBF | 制造商:Linear Technology 功能描述:Op Amp Dual Gen.Purpose +/-22V/44V SOIC8 |
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