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X90100 Datasheet, PDF (1/10 Pages) Xicor Inc. – NV Electronically Programmable Capacitor | |||
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Small Packages
MSOP
Flipchip
NV Electronically Programmable Capacitor
X90100
FEATURES
⢠Non-volatile EEPROM storage of programmed
trim codes
⢠Power On Recall of capacitance setting
⢠High-Performance Electronically Trimmable
Capacitance
⢠Excellent Linearity: <0.5 LSB error
⢠Very Simple Digital Interface
⢠Fast Adjustments: 5µs max incremental change
⢠Eliminates the need for mechanical tuning
⢠Capacitance trimmable from 7.5 pF to 14.5 pF
(single-ended mode)
⢠Packages:
âMSOP (1.1mm x 3.0mm x 3.0mm)
âFCP (1.35mm x 1.32mm x 0.50mm)
APPLICATIONS
⢠Post-trim of low-cost regenerative receivers
⢠Tunable RF stages
⢠Low-cost, Low temperature drift oscillators
⢠Garage door openers
⢠Keyless entry
⢠Industrial wireless control
⢠Capacitive sensor trimming
⢠RFID tags
DESCRIPTION
The Xicor X90100 is a non-volatile electronically pro-
grammable capacitor. The device is programmed
through a simple digital interface. After programming,
the chosen setting for the device is retained by inter-
nal EEPROM storage whether or not DC power is
maintained. There are 32 programmable capacitance
values selectable, ranging from 7.5 pF to 14.5 pF in
0.23 pF increments, in single-ended mode. The dielec-
tric is highly stable, and the capacitance exhibits a very
low voltage coefï¬cient. It has virtually no dielectric
absorbtion and has a very low temperature drift coefï¬-
cient in differential mode (<50ppm/°C).
The X90100 is programmed through three digital inter-
face pins, which have Schmitt triggers and pullup
resistors to secure code retention. The three pins,
INC, U/D, and CS, are identical in operation to other
Xicor chips with up/down interface, such as the x9315
5-bit Digitally Controlled Potentiometer (DCP).
BLOCK DIAGRAM
Cm
CPAD
U/D
INC
1*CU
2*CU
4*CU
8*CU
16*C U
Logic and E2
Cp
CPAD
VSS
CS
REV 1.4.7 9/8/03
VCC
Power On Reset
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