廬
X90100
Data Sheet
February 2, 2005
FN8156.0
NV Electronically Programmable
Capacitor
The Intersil X90100 is a non-volatile electronically
programmable capacitor. The device is programmed through
a simple digital interface. After programming, the chosen
setting for the device is retained by internal EEPROM
storage whether or not DC power is maintained. There are
32 programmable capacitance values selectable, ranging
from 7.5pF to 14.5pF in 0.23pF increments, in single-ended
mode. The dielectric is highly stable, and the capacitance
exhibits a very low voltage coefficient. It has virtually no
dielectric absorbtion and has a very low temperature drift
coefficient in differential mode (<50ppm/擄C).
The X90100 is programmed through three digital interface
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 Intersil chips with up/down
interface, such as the X9315 5-bit Digitally Controlled
Potentiometer (DCP).
Features
鈥?Non-volatile EEPROM storage of programmed trim codes
鈥?Power On Recall of capacitance setting
鈥?High-Performance Electronically Trimmable Capacitance
鈥?Excellent linearity: <0.5 LSB error
鈥?Very Simple Digital Interface
鈥?Fast adjustments: 5碌s max incremental change
鈥?Eliminates the need for mechanical tuning
鈥?Capacitance trimmable from 7.5pF to 14.5pF (single-
ended mode)
鈥?Packages:
- MSOP (1.1mm x 3.0mm x 3.0mm)
Applications
鈥?Post-trim of low-cost regenerative receivers
鈥?Tunable RF stages
鈥?Low-cost, Low temperature drift oscillators
Pinout
X90100
(8 LD MSOP)
TOP VIEW
INC
U/D
Vss
Cp
1
2
3
4
8
7
6
5
V
CC
CS
N/C
Cm
鈥?Garage door openers
鈥?Keyless entry
鈥?Industrial wireless control
鈥?Capacitive sensor trimming
鈥?RFID tags
Ordering Information
ORDERING
NUMBER
X90100M8I
C
TOTAL
7.5pF to 14.5pF,
Single Ended
PACKAGE
8 Ld MSOP
8 Ld MSOP
Tape and Reel
TEMP
RANGE
(擄C)
-40 to +85
-40 to +85
X90100M8IT1 7.5pF to 14.5pF,
Single Ended
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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