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Details, datasheet, quote on part number:X90100X8I
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| Part: | X90100X8I |
| Category: | Analog & Mixed-Signal Processing => Potentiometers => Digital Potentiometers |
| Description: | Non-volatile Digitally Programmable Capacitor |
| Company: | Xicor, Inc. |
| Datasheet: | Download X90100X8I datasheet File size : 106 kB |
| Request For quote: | Find where to buy X90100X8I
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Datasheet text preview:
Small Packages MSOP Flipchip
NV Electronically Programmable Capacitor
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
X90100
The Xicor 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 7.5 pF to 14.5 pF in 0.23 pF 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/°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 Xicor chips with up/down interface, such as the x9315 5-bit Digitally Controlled Potentiometer (DCP).
BLOCK DIAGRAM
Cm 1*C U 2*CU 4*CU 8*CU 16*CU U/D INC Logic and E2 CS
Cp
CPAD
CPAD
VSS
VCC
Power On Reset
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X90100
PIN CONFIGURATION
MSOP INC U/D Vss Cp 1 2 3 4 X90100 8 7 6 5 VCC CS N/C Cm
X90100
X
X
X 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
FCP
31 2 4 5 8
67
X90100
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
1
FCP
6
Symbol
INC
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 indicated 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 terminals 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 terminals 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.
2 3 4
7 8 5
U/D VSS Cp
5
4
Cm
6 7
2 1
N/C CS
8
3
VCC
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X90100
ABSOLUTE MAXIMUM RATINGS Temperature under bias ...........65°C to +135°C Storage temperature .......65°C to +150°C Voltage on CS, INC, U/D, CP, and CM with respect to VSS ... 1V to +7V V = |VCPVCM| ..... 5V Lead temperature (soldering 10 seconds)..........300°C COMMENT Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; the functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
CAPACITOR CHARACTERISTICS (Vcc=+5V, TA=25°C, single ended mode, CM = 0V, unless otherwise stated.) Limits Symbol
VCp VCm C C CTOTAL CTOTAL Q INL DNL TC1 VCC
Parameter
Absolute accuracy Cp terminal voltage Cm terminal voltage Capacitance increments Capacitance range Capacitance at Code=0 Capacitance at Code=31 Quality factor Resolution Absolute linearity error Relative linearity error CTOTAL Temperature Supply Voltage
(1) (2) (5)
Min.
0 0
Typ(4).
±15
Max.
VCC VCC
Unit
% V V pF pF pF pF
Test Conditions/Notes
0.23 7 7.5 14.5 7 5 ±0.15 ±0.15 ±50 2.7 5.5
f=315 MHz bits lsb lsb ppm/°C Differential Mode V
Coefficient(5)
Notes: (1) (2) (3) (4) (5)
Absolute linearity is used to determine actual capacitance versus expected capacitance = C(n)(actual) -- C(n) (expected) = ±0.15 Ml. Relative linearity is a measure of the error in step size between settings = C(n+1)--[C(n) + Ml] = ±0.15 Ml. lsb = least significant bit = CTOT/31. Typical values are for TA = 25°C and nominal supply voltage. This parameter is not 100% tested
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