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參數(shù)資料
| 型號： | LT1013AP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL PRECISION OPERATIONAL AMPLIFIERS |
| 中文描述： | 雙高精度運算放大器 |
| 文件頁數(shù)： | 19/25頁 |
| 文件大小： | 420K |
| 代理商： | LT1013AP |
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B – MAY 1988 – REVISED OCTOBER 1996
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
single-supply operation
The LT1013 is fully specified for single-supply operation (V
CC–
= 0). The common-mode input voltage range
includes ground, and the output swings to within a few millivolts of ground.
Furthermore, the LT1013 has specific circuitry that addresses the difficulties of single-supply operation, both
at the input and at the output. At the input, the driving signal can fall below 0 V, either inadvertently or on a
transient basis. If the input is more than a few hundred millivolts below ground, the LT1013 is designed to deal
with the following two problems that can occur:
1.
On many other operational amplifiers, when the input is more than a diode drop below ground, unlimited
current will flow from the substrate (V
CC–
terminal) to the input, which can destroy the unit. On the
LT1013, the 400-
resistors in series with the input (see schematic) protect the device even when the
input is 5 V below ground.
2.
When the input is more than 400 mV below ground (at T
A
= 25
°
C), the input stage of similar type
operational amplifiers saturates and phase reversal occurs at the output. This can cause lock up in
servo systems. Because of a unique phase-reversal protection circuitry (Q21, Q22, Q27, and Q28), the
LT1013 outputs do not reverse, even when the inputs are at –1.5 V (see Figure 24).
This phase-reversal protection circuitry does not function when the other operational amplifier on the LT1013
is driven hard into negative saturation at the output. Phase-reversal protection does not work on amplifier 1
when 2’s output is in negative saturation or on amplifier 2 when 1’s output is in negative saturation.
At the output, other single-supply designs either cannot swing to within 600 mV of ground or cannot sink more
than a few microproamperes while swinging to ground. The all-NPN output stage of the LT1013 maintains its
low output resistance and high gain characteristics until the output is saturated. In dual-supply operations, the
output stage is free of crossover distortion.
(a) VI(PP) = –1.5 V TO 4.5 V
(b) OUTPUT PHASE REVERSAL
EXHIBITED BY LM358
(c) NO PHASE REVERSAL
EXHIBITED BY LT1013
–1
0
1
2
3
4
5
–1
0
1
2
3
4
5
–1
0
1
2
3
4
5
–2
I
VO
V
Figure 24. Voltage-Follower Response With Input Exceeding
the Negative Common-Mode Input Voltage Range
相關PDF資料 |
PDF描述 |
|---|---|
| LT1013FK | DUAL PRECISION OPERATIONAL AMPLIFIERS |
| LT1013JG | DUAL PRECISION OPERATIONAL AMPLIFIERS |
| LT1013MFK | DUAL PRECISION OPERATIONAL AMPLIFIERS |
| LT1013A | Proximity Sensor; Sensor Input Type:Inductive; Sensing Range Max:8mm; Sensor Output Type:NO; Sensor Housing:Barrel |
| LT1013P | DUAL PRECISION OPERATIONAL AMPLIFIERS |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1013CCH | 制造商:Linear Technology 功能描述:Dual Precision Op Amp |
| LT1013CD | 功能描述:運算放大器 - 運放 Dual Prec Lo-Pwr Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LT1013CDE4 | 功能描述:運算放大器 - 運放 Dual Prec Lo-Pwr Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LT1013CDG4 | 功能描述:運算放大器 - 運放 Dual Prec Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LT1013CDR | 功能描述:運算放大器 - 運放 Dual Prec Lo-Pwr Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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