A replacement CA3306

[Steve Anderson]

A replacement for the venerable CA3306 6-bit 15MHz a-d for digitizing FSTV. The CA3306 was ideal perhaps with the exception of missing two bits, but it was adequate. A replacement I've found is here at a reasonable price. The Texas Instruments TLC5540...around US$10 or so...Google your usual supplier...a functional drop-in parallel 8-bit, 40MHz A-D. 24-pin DIL package too...

The blurb reads..."The TLC5540 is a high-speed, 8-bit analog-to-digital converter (ADC) that converts at sampling rates up to 40 megasamples per second (MSPS). Using a semiflash architecture and CMOS process, the TLC5540 is able to convert at high speeds while still maintaining low power consumption and cost. The analog input bandwidth of 75 MHz (typ) makes this device an excellent choice for undersampling applications. Internal resistors are provided to generate 2-V full-scale reference voltages from a 5-V supply, thereby reducing external
components. The digital outputs can be placed in a high impedance mode. The TLC5540 requires only a single 5-V supply for operation."

Steve A.