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LM324-TR Datasheet(PDF) 8 Page - 3PEAK INC. |
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LM324-TR Datasheet(HTML) 8 Page - 3PEAK INC. |
8 / 16 page ![]() 8 Rev. B.01 www.3peakic.com.cn LM321 / LM358 / LM324 1.2MHz, Low-Power 36V Op Amps Pin Functions -IN: Inverting Input of the Amplifier. +IN: Non-Inverting Input of Amplifier. OUT: Amplifier Output. The voltage range extends to within mV of each supply rail. V+ or +Vs: Positive Power Supply. Typically the voltage is from 3V to 36V. Split supplies are possible as long as the voltage between V+ and V – is between 3V and 36 V. A bypass capacitor of 0.1μF as close to the part as possible should be used between power supply pins or between supply pins and ground. V- or -Vs: Negative Power Supply. It is normally tied to ground. It can also be tied to a voltage other than ground as long as the voltage between V+ and V– is from 3V to 36V. If it is not connected to ground, bypass it with a capacitor of 0.1μF as close to the part as possible. Operation The LM321/358/324 output signal range extends beyond the negative and positive power supplies. The intput can even extend all the way to the negative supply. The Class-AB control buffer and output bias stage uses a proprietary compensation technique to take full advantage of the process technology to drive very high capacitive loads. This is evident from the transient over shoot measurement plots in the Typical Performance Characteristics. Applications Information High Supply Voltage and Low Power Consumption The LM321/358/324 of operational amplifiers can operate with power supply voltages from 3V to 36V. Each amplifier draws only 100 μA quiescent current. The low supply voltage capability and low supply current are ideal for portable applications demanding HIGH CAPACITIVE LOAD DRIVING CAPABILITY and WIDE BANDWIDTH. The LM321/358/324 is optimized for wide bandwidth low power applications. They have an industry leading high GBWP to power ratio and are unity gain stable for 10nf CAPACITIVE load. When the load capacitance increases, the increased capacitance at the output pushed the non-dominant pole to lower frequency in the open loop frequency response, lowering the phase and gain margin. Higher gain configurations tend to have better capacitive drive capability than lower gain configurations due to lower closed loop bandwidth and hence higher phase margin. Low Input Referred Noise The LM321/358/324 provides a low input referred noise density of 48nV/√Hz at 1kHz. The voltage noise will grow slowly with the frequency in wideband range, and the input voltage noise is typically 10 μV P-P at the frequency of 0.1Hz to 10Hz. Low Input Offset Voltage The LM321/358/324 has a low offset voltage tolerance of 3mV maximum which is essential for precision applications. The offset voltage is trimmed with a proprietary trim algorithm to ensure low offset voltage for precision signal processing requirement. Low Input Bias Current The LM321/358/324 is a CMOS OPA family and features very low input bias current in pA range. The low input bias current allows the amplifiers to be used in applications with high resistance sources. Care must be taken to minimize PCB Surface Leakage. See below section on “PCB Surface Leakage” for more details. PCB Surface Leakage |
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