TLE2141单运放)、TLE2142(双运放)、TLE2144(四运放),都是单电源4~44V,4.5MHz单位增益带宽;
MC33171(单运放)、MC33172(双运放)、MC33174(四运放),都是单电源3~44V,1.8MHz单位增益带宽;
MC33071(单运放)、MC33072(双运放)、MC33074(四运放),都是单电源3~44V,4.5MHz单位增益带宽;
MC34071(单运放)、MC34072(双运放)、MC34074(四运放),都是单电源3~44V,1.8MHz单位增益带宽;
OPA551,单电源8~60V,单位增益带宽3MHz;
TCA0372,单电源5~40V,单位增益带宽1.4MHz;
OPA37(高精度运放),单电源8~44V,单位增益带宽63MHz;
OPA27(高精度运放),单电源8~44V,单位增益带宽8MHz。
OPA847具有关断状态的宽带超低噪声电压反馈运算放大器
这个产品市面上目前只有英文的描述。
描述
The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to <1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.
The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth product, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-toDigital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.
特性
HIGH GAIN BANDWIDTH: 3.9GHz
LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
VERY LOW DISTORTION: –105dBc (5MHz)
HIGH SLEW RATE: 950V/µs
HIGH DC ACCURACY: VIO <±100µV
LOW SUPPLY CURRENT: 18.1mA
LOW SHUTDOWN POWER: 2mW
STABLE FOR GAINS 12
APPLICATIONS
HIGH DYNAMIC RANGE ADC PREAMPS
LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
WIDEBAND, HIGH GAIN AMPLIFIERS
LOW NOISE DIFFERENTIAL RECEIVERS
ULTRASOUND CHANNEL AMPLIFIERS
IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642
All trademarks are the property of their respective owners.
运算放大器棋带宽在几十M左右的,实际上很少,我用过的有:
LM324,LM339,LM358,
4558,NE5532,
UA741,OP07,OP37.
但是真正带宽能达到兆级的只有OP37,
从PDF资料来看,OP07,OP37的区别并不大,
但是价格天壤之别,OP07:1.5元一片,
OP37:35元一片。
可能是我买到OP07的水货了,
我可以明确的告诉你,少于10元一片的芯片是
达不到几十兆,一分钱一分货,高频运放是很难做的。
所以,建议你去买OP37,太便宜的你就悠着点,
基本上是20KHZ以下的带宽。
OP37的PDF资料:http://pdf.dzsc.com/OP3/OP37.pdf
希望对你有用。
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