CHE1270A98F_15 Datasheet, PDF (7/8 Pages) United Monolithic Semiconductors – 5-44GHz Detector

5-44GHz Detector
Notes
RF IN
Matching
CHE1270a98F
27kΩ
Vdet
27kΩ
Vref
DC
Recommended external resistors assembly
27kΩ resistors in parallel with Vdet and Vref pads are recommended to provide the best
behaviour in the whole operating temperature range.
As the voltage detection is the difference between Vref and Vdet, the external resistor value
should be identical on these two ports.
For information, a variation of 3% leads around 1mV variation of detected voltage.
Due to ESD protection circuits on RF input, an external capacitance might be requested to
isolate the product from external voltage that could be present on the RF access.
ESD protections are also implemented on Vdet and Vref accesses.
Due to the BCB coating on the chip, qualification domain implies the chip must be glued.
Ref. : DSCH1270a2074 - 14 Mar 12
7/8
Specifications subject to change without notice
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