EC5602 Datasheet, PDF (7/12 Pages) E-CMOS Corporation – High Slew Rate Rail-to-Rail Dual Operational Amplifiers

EC5602
High Slew Rate Rail-to-Rail Dual Operational Amplifiers
1
Applications Information
Product Description
The EC5602 rail-to-rail dual channels amplifier is built on an advanced high voltage CMOS process. It’s beyond rails
input capability and full swing of output range makes itself an ideal amplifier for use in a wide range of general-purpose
applications. The features of 20V/µS high slew rate, fast settling time, -3dB bandwidth of 12MHz as well as high output
driving capability have proven the EC5602 a good voltage reference buffer in TFT-LCD for grayscale reference
applications. High phase margin and extremely low power consumption (500µA per amplifier) make the EC5602 ideal
for Connected in voltage follower mode for low power high drive applications
Supply Voltage, Input Range and Output Swing
The EC5602 can be operated with a single nominal wide supply voltage ranging from 4.5V to 18V with stable
performance over operating temperatures of -40 °C to +85 °C.
With 500mV greater than rail-to-rail input common mode voltage range and 70dB of Common Mode Rejection Ratio,
the EC5602 allows a wide range sensing among many applications without having any concerns over exceeding the
range and no compromise in accuracy. The output swings of the EC5602 typically extend to within 80mV of positive
and negative supply rails with load currents of 5mA. The output voltage swing can be even closer to the supply rails by
merely decreasing the load current. Figure 1 shows the input and output waveforms for the device in the unity-gain
configuration. The amplifier is operated under ±
-p
sinusoid. An approximately 9.985 Vp-p of output voltage swing can be easily achieved.
Figure 1. Operation with Rail-to-Rail Input and Output
Output Short Circuit Current Limit
A +/-120mA short circuit current will be limited by the EC5602 if the output is directly shorted to the positive or the
negative supply. For an indefinitely output short circuit, the power dissipation could easily increase such that the device
may be damaged. The internal metal interconnections are well designed to prevent the output continuous current from
exceeding +/-30 mA such that the maximum reliability can be well maintained.
E-CMOS Corp. (www.ecmos.com.tw)
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6A27N Rev. F002