AD104 Datasheet

The 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 AD104 models are in-tended as lower cost solutions where the performance of the AD202 or AD204 is not demanded.

The AD104 can be used in applications where input-to-input and/or input-to-system isolation is desired. 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 spe-cific 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 oscil-lator components like a CD4047 or TL555 may be used, or a designer may choose the AD246 clock driver developed for the AD204 product.