파트넘버.co.kr X90100XI 데이터시트 PDF


X90100XI 반도체 회로 부품 판매점

NV Electronically Programmable Capacitor



Xicor 로고
Xicor
X90100XI 데이터시트, 핀배열, 회로
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:
—MSOP (1.1mm x 3.0mm x 3.0mm)
—FCP (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 coefficient. It has virtually no dielectric
absorbtion and has a very low temperature drift coeffi-
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*CU
Logic and E2
Cp
CPAD
VSS
CS
REV 1.4.7 9/8/03
VCC Power On Reset
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X90100XI 데이터시트, 핀배열, 회로
X90100
PIN CONFIGURATION
MSOP
X90100
INC
U/D
Vss
Cp
18
27
X90100
36
45
VCC
CS
N/C
Cm
FCP
31 2
4
5
67 8
X90100
XXX
VCC Limits
Blank =2.7V to 5.5V
Temperature Range
I = Industrial = –40°C to +85°C
Package
M = 8-Lead MSOP
X = 8-Bump FCP (Flipchip)
Base Part Number
X90100 ORDERING CODES
Ordering
Number
X90100M8I
X90100X8I
Ctotal
7.5pF to 14.5pF, Single Ended
7.5pF to 14.5pF, Single Ended
Package
8-lead MSOP
8-lead FCP
Temperature
Range
-40C to +85C
-40C to +85C
PIN DESCRIPTIONS
Pin Number
MSOP FCP
16
27
38
45
54
62
71
83
Symbol
INC
U/D
VSS
Cp
Cm
N/C
CS
VCC
Brief Description
Increment (INC). The INC input is negative-edge triggered. Toggling INC will move the
capacitance value and either increment or decrement the counter in the direction indicat-
ed by the logic level on the U/D input.
Up/Down (U/D). The U/D input controls the direction of the trimmed capacitor value and
whether the counter is incremented or decremented.
Ground.
Cp. The high (Cp) and low (Cm) terminals of the X90100 are equivalent to the fixed ter-
minals of a mechanical trimmable capacitor. The minimum dc voltage is VSS and the
maximum is VCC. The value of capacitance across the terminals is determined by digital
inputs INC, U/D, and CS.
Cm. The high (Cp) and low (Cm) terminals of the X90100 are equivalent to the fixed ter-
minals of a mechanical trimmable capacitor. The minimum dc voltage is VSS and the
maximum is VCC. The value of capacitance across the terminals is determined by digital
inputs INC, U/D, and CS.
Not Connected. Must be floating.
Chip Select (CS). The device is selected when the CS input is LOW. The current counter
value is stored in nonvolatile memory when CS is returned HIGH while the INC input is
also HIGH. After the store operation is complete the X90100 will be placed in the low
power standby mode until the device is selected once again.
Positive Supply Voltage.
REV 1.4.7 9/8/03
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