The AD652JPZ-REEL7 is a monolithic voltage-to-frequency converter from Analog Devices that accepts an analog input voltage and produces a pulse train whose frequency is linearly proportional to the applied voltage. Its 2 MHz maximum output frequency and ±0.02% typical linearity make it suited for precision analog-to-digital conversion in industrial measurement, data acquisition, and isolated signal transmission applications where a frequency-domain output simplifies galvanic isolation or long-distance cabling. The ±25 ppm/°C full-scale drift specification tells you how tightly the conversion gain holds over temperature — important when the part is deployed in an enclosure that sees seasonal swings or process heat.
This variant ships in a 20-lead PLCC with J-bend leads (20-PLCC, 9x9 mm body). It is a surface-mount package, so the board footprint expects a PLCC-20 socket or direct solder pads with the J-lead profile. Cut Tape is also available for prototype or low-volume builds. If your existing BOM uses the AD652JPZ in a tube (the standard PLCC-20 tube version), the die and electrical specs are identical — the only difference is the shipping medium.
For compliance documentation or a certificate of conformance, the standard Analog Devices declaration is available through the supply channel.