The ADA4805-1 is a high speed voltage feedback rail-to-rail output amplifier with excellent quiescent current performance down to 495 μA, making it ideal for low power, high resolution data conversion systems. Despite its low power consumption, the amplifier still provides excellent overall performance. The device features a high bandwidth of 105 MHz (gain of 1), a high slew rate of 160 V/μs, and a low input offset voltage of up to 125 μV.
The shutdown pin allows further reduction of the quiescent supply current to 3 μA. For power-sensitive applications, the shutdown mode provides a very high-speed turn-on time of 3 μs from off to full turn-off (output is 16 bits). This allows the user to turn off the amplifier between two ADC samples for dynamic power management.
The amplifier is fabricated on Analog Devices' proprietary ultra-fast complementary bipolar (XFCB) process with low voltage and low current noise performance (5.9 nV/√Hz, 0.6 pA/√Hz). Supporting a wide supply voltage range of ±1.5 V to ±5 V and a single supply of 3 V and 5 V, the ADA4805-1 is ideal for high speed, low power instrumentation.
ADA4805-1 features:
1. Low input offset voltage: 125 μV (max)
2. Low input offset voltage drift - 0.2 μV/°C (typ.), -1.5 μV/°C (max)
3. Ultra-low supply current: 495 μA per amplifier
4, wide power supply voltage range: 3 V to 10 V
5, high speed performance - −3 dB bandwidth: 105 MHz, - slew rate: 160 V / μs
ADA4805-1 application:
1, high resolution, high precision ADC driver
2, battery powered instrumentation
3, micro power active filter
4, portable POS terminal
5, active RFID card reader
6, photomultiplier tube
7, ADC reference buffer
Internal function diagram of ADA4805-1:
Figure 1: Internal function diagram of ADA4805-1
Typical application of ADA4805-1:
Figure 2: Typical application of ADA4805-1
The ADA4805-1/ADA4805-2 are high speed voltage feedback, rail-to-rail output amplifiers with very low quiescent current of 500 μA, making them ideal for low power, high resolution data conversion systems. Despite the low power consumption, these devices still provide excellent overall performance. They have a high bandwidth of 105 MHz, a high slew rate of 160 V/μs, and a low input offset voltage of 125 μV at +1 gain. The shutdown pin allows the quiescent supply current to be further reduced to 2.9 μA. For power sensitive applications, the shutdown mode provides an extremely fast turn-on time of 3 μs. It shuts down the amplifier between two ADC samples, allowing the user to dynamically manage amplifier power consumption
ADA4805-1 Chinese Data Sheet: Download Now
ADA4805-2 Chinese Data Sheet: Download Now
More source code and PCB schematic:
Function description
The socket is ordinary converter,with two output 5V2A power USB power supply at the same time,can be very convenient in use electrical appliances and recharge the equipment at the same time,such as digital products like Iphone Ipad,MP3,MP4 etc.The charge apply to full range of international AC output,no-load power consumption less than 0.3W,with short circuit,overload,over-voltage protection,can be convenient for your life and save more energy
Timer Control Time Adgustment
1.Press the power switch 1 time,the 1HOUR LED will light on.The Timer into ON mode,USB and control socket output ON .
2.Continuously press the power switch the LED light on,the Countdown mode and LED light on will cycle change from 1HR,2HR,4HR,6HR,8HR,10HR.
3.Choose you need countdown time mode,the mode LED will lighto on,start countdown until countdown time finish,the control output and USB change to OFF
4.Then the countdown is start,The Time indicate LED will from high to low auto change until Countdown finish off.
Failure analysis:
1.check whether the power supply connection is good
2.check whether the USB cable is loosen
Warning Note:
1.Use indoor and dry location ONLY
2.The load max does not exceed 15A 3600W
3.This product does not convert voltage please do not miss use DO NOT exceed the maximum loading of 3600 Watts 15A
4.Always have earth connection for safety reason
5.If in doubt please consult with a qualified electrician
USB countdown timer, USB countdown timer socket, USB timer, USB charger timer, USB timer socket
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