参数资料
| 型号： | OP492GS |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 4MHZ QUAD 14SOIC |
| 标准包装： | 56 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 转换速率： | 4 V/µs |
| 增益带宽积： | 4MHz |
| 电流 - 输入偏压： | 375nA |
| 电压 - 输入偏移： | 1400µV |
| 电流 - 电源： | 1mA |
| 电流 - 输出 / 通道： | 10.5mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 33 V，±2.25 V ~ 16.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 管件 |
OP292/OP492
Rev. C | Page 16 of 20
SINGLE-SUPPLY ULTRASONIC
CLAMPING/LIMITING RECEIVER AMPLIFIER
PRECISION SINGLE-SUPPLY VOLTAGE
COMPARATOR
Figure 42 shows an ultrasonic receiver amplifier using the
nonlinear impedance of low cost diodes to effectively control
the gain for wide dynamic range. This circuit amplifies a 40 kHz
ultrasonic signal through a pair of low cost clamping amplifiers
before feeding a band-pass filter to extract a clean 40 kHz signal
for processing.
The OP292/OP492 have excellent overload recovery characteristics,
making them suitable for precision comparator applications.
Figure 43 shows the saturation recovery characteristics of the
OP492. The amplifier exhibits very little propagation delay. The
amplifier compares a signal to precisely <0.5 mV offset error.
2k
1k
20k
2.21k
+5V
3V p-p
–15V
1V
90
100
10
5s
5V
0%
OP492
00
31
0-
04
3
The signal is ac-coupled into the false-ground bias node by
virtue of the capacitive piezoelectric sensing element. Rather
than using an amplifier to generate a supply splitting bias, the
false ground voltage is generated by a low cost resistive voltage
divider.
Each amplifier stage provides ac gain while passing on the dc
self-bias. As long as the output signal at each stage is less than
the forward voltage of a diode, each amplifier has unrestricted
gain to amplify low level signals. However, as the signal strength
increases, the feedback diodes begin to conduct, shunting
the feedback current, and thus reducing the gain. Although
distorting the waveform, the diodes effectively maintain a
relatively constant amplitude even with large signals that
otherwise would saturate the amplifier. In addition, this design
is considerably more stable than the feedback type AGC.
Figure 43. OP492 Has Fast Overload Recovery for Comparator Applications
PROGRAMMABLE PRECISION WINDOW
COMPARATOR
The OP292/OP492 can be used for precise level detection, such
as in test equipment where a signal is measured within a range
(see Figure 44). A pair of 12-bit DACs sets the threshold voltage
level. The DACs have serial interface, which minimizes
interconnection requirements. The DAC8512 has a control
resolution of 1 mV/bit. Therefore, for 5 V supply operation, the
maximum DAC output is 4.095 V. However, the OP292 accepts
a maximum input of 4.0 V.
The overall circuit has a gain range from 2 to 400, where the
inversion comes from the band-pass filter stage. Operating with
a Q of 5, the filter restores a clean, undistorted signal to the output.
The circuit also works well with 5 V supply systems.
12V
600k
1M
RECEIVER
PANASONIC
EFR-RTB40K2
12V
390k
10k
0.01F
7.5V
12V
100k
10k
0.01F
14k
0.01F
6.04k
68pF
1F
12V
600k
1M
7.5V
VOUT
68pF
1/4
OP492
1/4
OP492
1/4
OP492
00
31
0-
04
2
56.2k
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
DECODE
CS
CLK
SDI
LD
ANALOG
INPUT
CLR
5V
2
3
6
5
7
LOW
HIGH
8
4
1
5V
1/2
OP292
1/2
OP292
CONTROL
REF
DAC8512
CONTROL
REF
DAC
00
31
0-
0
44
Figure 42. 40 kHz Ultrasonic Clamping/Limiting Receiver Amplifier
Figure 44. Programmable Window Comparator with
12-Bit Threshold Level Control
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP-492GS | 制造商:AD 制造商全称:Analog Devices 功能描述:DUAL/QUAD SINGLE SUPPLY OPERATIONAL AMPLIFIER |
| OP492GS-REEL | 功能描述:IC OPAMP GP 4MHZ QUAD 14SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
| OP492GS-REEL7 | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| OP492GSZ | 功能描述:IC OPAMP GP 4MHZ QUAD 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| OP492GSZ-REEL | 功能描述:IC OPAMP GP 4MHZ QUAD 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:管件 |
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