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| 型号： | OPA2337UA |
| 英文描述： | DIODE ZENER TRIPLE ISOLATED 200mW 39Vz 2mA-Izt 0.0513 0.1uA-Ir 27.3 SOT-363 3K/REEL |
| 中文描述： | MicroSIZE，单电源CMOS运算放大器MicroAmplifier⑩系列 |
| 文件页数： | 8/9页 |
| 文件大小： | 179K |
| 代理商： | OPA2337UA |
8
OPA337, OPA2337
OPA338, OPA2338
Figure 4 shows a compensation technique using an inverting
configuration. The low frequency gain is set by the resistor
ratio while the high frequency gain is set by the capacitor
ratio. As with the noninverting circuit, for frequencies above
fC the gain must be greater than the recommended minimum
stable gain for the op amp.
The capacitor values shown are the nearest standard values.
Capacitor values may need to be adjusted slightly to opti-
mize performance. For more detailed information, consult
the OPA686 product data sheet.
Figure 5 shows the large-signal transient response using the
circuit given in Figure 4. As shown, the OPA338 is stable in
low gain applications and provides improved slew rate
performance when compared to the OPA337.
FIGURE 4. Inverting Compensation Circuit of OPA338 for
Low Gain.
500mV/div
OPA338
2
s/div
FIGURE 5. G = 2, Slew-Rate Comparison of OPA338 and
OPA337.
OPA337
Resistors R1 and R2 are chosen to set the desired dc signal
gain. Then the value for C2 is determined as follows:
C2 = 1/(2πfCR2)
C1 is determined from the desired high frequency gain (GH):
C1 = (GH – 1) C2
For a desired dc gain of 2 and high frequency gain of 10, the
following resistor and capacitor values result:
R1 = 10k
C1 = 150pF
R2 = 5k
C2 = 15pF
TYPICAL APPLICATION
Figure 6 shows the OPA2337 in a typical application. The
ADS7822 is a 12-bit, micro-power sampling analog-to-
digital converter available in the tiny MSOP-8 package. As
with the OPA2337, it operates with a supply voltage as
low as +2.7V. When used with the miniature SOT23-8
package of the OPA2337, the circuit is ideal for space-
limited and low power applications. In addition, OPA2337’s
high input impedance allows large value resistors to be
used which results in small physical capacitors, further
reducing circuit size. For further information, consult the
ADS7822 product data sheet.
C
2 =
, C
1 = (GH –1) C2
1
2
πf
CR2
C
1
150pF
OPA338
V
IN
V
OUT
R
1
5k
R
2
10k
Where G
H is the high frequency gain,
G
H = 1 + C1/C2
Improved slew rate versus OPA337
(see Figure 5).
C
2
15pF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OPA2337UA | 制造商:BURR-BROWN 功能描述:OP AMP DUAL CMOS SMD 2337 SOIC8 制造商:Texas Instruments 功能描述:Operational Amplifier IC Number of Ampli |
| OPA2337UA/2K5 | 功能描述:运算放大器 - 运放 MicroSIZE Single-Supply CMOS RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| OPA2337UA/2K5G4 | 功能描述:运算放大器 - 运放 MicroSIZE Single-Supply CMOS RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| OPA2337UAG4 | 功能描述:运算放大器 - 运放 MicroSIZE Single-Supply CMOS RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| OPA2338 | 制造商:BB 制造商全称:BB 功能描述:MicroSIZE, Single-Supply CMOS OPERATIONAL AMPLIFIERS MicroAmplifier ⑩ Series |
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