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| 型號： | SA5230N |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low Voltage Operational Amplifier |
| 中文描述： | OP-AMP, 4000 uV OFFSET-MAX, 0.6 MHz BAND WIDTH, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 8/17頁 |
| 文件大?。?/td> | 189K |
| 代理商： | SA5230N |
Philips Semiconductors
Product specification
NE/SA5230
Low voltage operational amplifier
1994 Aug 31
8
THERMAL CONSIDERATIONS
When using the NE5230, the internal power dissipation capabilities
of each package should be considered. Philips Semiconductors
does not recommend operation at die temperatures above 110
°
C in
the SO package because of its inherently smaller package mass.
Die temperatures of 150
°
C can be tolerated in all the other
packages. With this in mind, the following equation can be used to
estimate the die temperature:
T
J
= T
A
+ (P
D
×
θ
JA
) (1)
Where
T
A
T
J
P
D
AmbientTemperature
Die Temperature
Power Dissipation
(I
CC
x V
CC
)
Packagethermalresistance
270
o
C W for SO
board mounting
JA
8 in PC
See the packaging section for information regarding other methods
of mounting.
θ
JA
=100
°
C/W for the plastic DIP;
θ
JA
=110
°
C/W for the ceramic DIP.
The maximum supply voltage for the part is 15V and the typical
supply current is 1.1mA (1.6mA max). For operation at supply
voltages other than the maximum, see the data sheet for I
CC
versus
V
CC
curves. The supply current is somewhat proportional to
temperature and varies no more than 100
μ
A between 25
°
C and
either temperature extreme.
Operation at higher junction temperatures than that recommended is
possible but will result in lower MTBF (Mean Time Between
Failures). This should be considered before operating beyond
recommended die temperature because of the overall reliability
degradation.
DESIGN TECHNIQUES AND APPLICATIONS
The NE5230 is a very user-friendly amplifier for an engineer to
design into any type of system. The supply current adjust pin (Pin 5)
can be left open or tied through a pot or fixed resistor to the most
negative supply (i.e., ground for single supply or to the negative
supply for split supplies). The minimum supply current is achieved
by leaving this pin open. In this state it will also decrease the
bandwidth and slew rate. When tied directly to the most negative
supply, the device has full bandwidth, slew rate and I
CC
. The
programming of the current-control pin depends on the trade-offs
which can be made in the designer’s application. The graph in
Figure 4 will help by showing bandwidth versus I
CC
. As can be seen,
the supply current can be varied anywhere over the range of 100
μ
A
to 600
μ
A for a supply voltage of 1.8V. An external resistor can be
inserted between the current control pin and the most negative
supply. The resistor can be selected between 1
to 100k
to
provide any required supply current over the indicated range. In
addition, a small varying voltage on the bias current control pin could
be used for such exotic things as changing the gain-bandwidth for
voltage controlled low pass filters or amplitude modulation.
Furthermore, control over the slew rate and the rise time of the
amplifier can be obtained in the same manner. This control over the
slew rate also changes the settling time and overshoot in pulse
response applications. The settling time to 0.1% changes from 5
μ
s
at low bias to 2
μ
s at high bias. The supply current control can also
be utilized for wave-shaping applications such as for pulse or
triangular waveforms. The gain-bandwidth can be varied from
between 250kHz at low bias to 600kHz at high bias current. The
slew rate range is 0.08V/
μ
s at low bias and 0.25V/
μ
s at high bias.
P
μ
a. Unity Gain Bandwidth vs Power Supply Current for
V
CC
=
±
0.9V
b. I
CC
Current vs Bias Current Adjusting Resistor for
Several Supply Voltages
800
700
600
500
400
300
200
100
100
200
300
400 500 600700
UNITY GAIN BANDWIDTH (kHz)
T
A
= 25
°
C
V
CC
= 15V
V
CC
= 12V
V
CC
= 9V
V
CC
= 6V
V
CC
= 3V
V
CC
= 2V
V
CC
= 1.8V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
I
C
10
0
10
1
10
2
10
3
10
4
10
5
R
ADJ
(
)
SL00253
Figure 4.
The full output power bandwidth range for V
CC
equals 2V, is above
40kHz for the maximum bias current setting and greater than 10kHz
at the minimum bias current setting.
If extremely low signal distortion (<0.05%) is required at low supply
voltages, exclude the common-mode crossover point (V
B1
) from the
common-mode signal range. This can be accomplished by proper
bias selection or by using an inverting amplifier configuration.
Most single supply designs necessitate that the inputs to the op amp
be biased between V
CC
and ground. This is to assure that the input
signal swing is within the working common-mode range of the
amplifier. This leads to another helpful and unique property of the
NE5230 that other CMOS and bipolar low voltage parts cannot
achieve. It is the simple fact that the input common-mode voltage
can go beyond either the positive or negative supply voltages. This
benefit is made very clear in a non-inverting voltage-follower
configuration. This is shown in Figure 5 where the input sine wave
allows an undistorted output sine wave which will swing less than
100mV of either supply voltage. Many competitive parts will show
severe clipping caused by input common-mode limitations. The
NE5230 in this configuration offers more freedom for quiescent
biasing of the inputs close to the positive supply rail where similar op
amps would not allow signal processing.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA5230NG | 功能描述:運算放大器 - 運放 1.8V Single Rail to Rail Industrial Temp 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| SA5232 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Matched dual high-performance low-voltage operational amplifier |
| SA5232D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Matched dual high-performance low-voltage operational amplifier |
| SA5232D,112 | 功能描述:運算放大器 - 運放 MATCHED DUAL LOW-VOLT 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| SA5232D,118 | 功能描述:運算放大器 - 運放 MATCHED DUAL LOW-VOLT 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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