Analog Devices Introduces ADA4899-1 Operational Amplifier

Analog Devices, Inc. has introduced the ADA4899-1 operational amplifier. Because the op amp minimizes two fundamental sources of error (voltage noise and harmonic distortion), it is easy to address the design challenges of high-resolution data acquisition systems. The ADA4899-1 is the industry's first unity-gain stable op amp with 1nV/√Hz voltage noise and 117dBc (1MHz bandwidth) spurious-free dynamic range (SFDR) for applications requiring the highest accuracy, such as radar-based protection. Collision systems, medical ultrasound and precision instruments.

According to reports, the circuit structure of the ADA4899-1 operational amplifier is patent-pending, with an inherently traditional input stage, which solves the trade-off between noise and distortion of basic performance. The ADA4899-1 also features a direct current (DC) input specification for high speed op amps: 0.23mV offset voltage maximum and 1μA input bias current maximum. It can also be used with the ADI PulSAR family of ADCs, including the AD7674.

The ADA4899-1 is now fully operational and meets specified specifications in the extended industrial temperature range of -40°C to +125°C. Two package options are available, one is a small 3mm x 3mm LFCSP (lead frame chip scale) package that reduces pin inductance, provides good heat dissipation and saves board area; another is traditional 8-pin SOIC (small outline integrated circuit) package.

1.5 Ton Standing On Type Electric Stacker

Zowell Electric Stacker 1500kg is an industrial device for loading and lifting pallets on a shelf at high level. As an ideal choice to operate in narrow space of warehouse, it can be widely used in petroleum, chemical, pharmaceutical, textile, pigment, coal and other industries, as well as ports, railways, freight yards, warehouses.

Compared with the traditional manual stacking, Zowell full electric stacker maintains great advantages in safety, efficiency and cost. In addition to durability and accuracy both outside and inside, Zowell XE electric stackers are also equipped with mast with clear view, double speed and lateral vertical moving switch, which are valuable when working in limited space.

Detail features

1. Multifunctional handle
The multifunctional handle is imported from Germany. It has integrated control functions including a speed button, horn button, emergency reversing button and lifting button. The handle has an emergency reversing button which can effectively protect the operators from being hurt in accident involving falling items. The handle can realize braking both in vertical and horizontal position. The human-machine design is quite safe and the operation is more comfortable.

2. Strong power
This stacker adopts high efficiency motor which can be precisely controlled and the output power is strong. The turning control can be optionally equipped with EPS. It can help the driver with turning by using electronic control device to produce auxiliary power of relative level and direction according to the torque signal and speed signal. So the operation of the driver can be more convenient and precise and the movement can be more stable and reliable.

3.Superior gradeability
The powerful motor and 5 wheel stacker structure can provide superior stability and gradeability, so that the truck can have sufficient gradeability when it is fully loaded.

4. Buffered pedal
The foldable pedal can save space when the stacker is not in use. It can also effectively protect the drivers from being effected by the bumping and give feedback to the driver with the road condition.

5. Dual balance wheel device
This stacker is equipped with a dual balance wheel so that it can overcome roadblocks easier and the running can be more stable.

6. Emergency power-off switch
The power can be rapidly cut off in emergency to ensure safety.

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