AD104

The AD102 and AD104 are general purpose, two-port, isolation amplifiers suitable for use where input signal isolation is desired. Each offers a functionally complete, compact isolation solution rated at 500 V rms common mode, based upon the proven and reliable transformer-coupled, galvanic isolation technique used in all AD200 series isolation amplifier products.

Each model is offered in a minimum footprint package requiring no external components to operate. Though similar to the AD202 and AD204, the AD102 and AD104 models are intended as lower cost solutions where the performance of the AD202 or AD204 is not demanded.

Both the AD102 and AD104 can be used in applications where input-to-input and/or input-to-system isolation is desired. The AD102 is best suited for single input uses as it requires only +15 V dc power to operate. It may also be appropriate for multichannel applications when input-to-input isolation is not required such as where a single input multiplexer selects a specific channel prior to isolation.

For applications where input to input isolation is required, the AD104 may be a more desirable choice. It offers the lowest cost per channel especially when powered from a common clock source, the cost of which may be amortized over many channels.

The clock necessary for AD104 operation is a 25 kHz, 15 V p-p square wave applied to the clock input pin. Most standard oscillator components like a CD4047 or TL555 may be used, or a designer may choose the AD246 clock driver developed for the AD204 product.