X90100X8I

X90100 XICOR | Alldatasheet

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Technical content

REV 1.4.7 9/8/03 1 of 10 www.xicor.com 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 C PAD U/D INC CS V SS C PAD Cp 1*C U 2*C U 4*C U 8*C U 16*C U Logic and E Power On ResetV CC Small Packages MSOP Flipchip

2 of 10REV 1.4.7 9/8/03 www.xicor.com X90100 PIN CONFIGURATION X90100 ORDERING CODES PIN DESCRIPTIONS Ordering Number Ctotal Package Temperature Range X90100M8I 7.5pF to 14.5pF, Single Ended 8-lead MSOP -40C to +85C X90100X8I 7.5pF to 14.5pF, Single Ended 8-lead FCP -40C to +85C Pin Number Symbol Brief DescriptionMSOP FCP 1 6 INC 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. 2 7 U/D Up/Down (U/D) . The U/D input controls the direction of the trimmed capacitor value and whether the counter is incremented or decremented. 38 V SS Ground

45 C p

. 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 V SS and the maximum is V CC . The value of capacitance across the terminals is determined by digital inputs INC, U/D, and CS.

54 C m

. 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 V SS and the maximum is V CC . The value of capacitance across the terminals is determined by digital inputs INC, U/D, and CS. 6 2 N/C Not Connected . Must be floating.

71 C S

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. 83 V CC Positive Supply Voltage VCC CS INC U/D X90100 MSOP N/C Cm Vss Cp 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 X X X 1 2 3 6 5 X90100 FCP

3 of 10REV 1.4.7 9/8/03 www.xicor.com X90100 ABSOLUTE MAXIMUM RATINGS C to +135 C Voltage on CS , INC, U/D, C P , and C M with respect to V SS V = |V CP CM 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 specifi- cation) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAPACITOR CHARACTERISTICS (Vcc=+5V, T A =25°C, single ended mode, C M = 0V, unless otherwise stated.) Notes: (1) Absolute linearity is used to determine actual capacitance versus expected capacitance = C (n) (actual) — C (n) (expected) = ±0.15 Ml. (2) Relative linearity is a measure of the error in step size between settings = C (n+1) —[C (n) + Ml] = ±0.15 Ml. (3) lsb = least significant bit = C TOT /31. (4) Typical values are for T A = 25°C and nominal supply voltage. (5) This parameter is not 100% tested Symbol Parameter Limits Test Conditions/NotesMin. Typ (4) . Max. Unit Absolute accuracy ±15 % V Cp C p terminal voltage 0 V CC V V Cm C m terminal voltage 0 V CC V C Capacitance increments 0.23 pF C Capacitance range 7 pF C TOTAL Capacitance at Code=0 7.5 pF C TOTAL Capacitance at Code=31 14.5 pF Q Quality factor (5) 7 f=315 MHz Resolution 5 bits (1) ±0.15 lsb DNL Relative linearity error (2) ±0.15 lsb TC C TOTAL Temperature Coefficient (5) ±50 ppm/°C Differential Mode V CC Supply Voltage 2.7 5.5 V

4 of 10REV 1.4.7 9/8/03 www.xicor.com D.C. OPERATING CHARACTERISTICS CC = 5V, T A = 25°C unless otherwise specified) ENDURANCE AND DATA RETENTION CC = 5V, T A = 25°C unless otherwise specified) Symbol Parameter Limits Unit Test ConditionsMin. Typ. (4) Max. I CC1 V CC active current (Increment) 50 100 µA CS = V IL , U/D = V IL or V IH and INC = 0.4V @ max. t CYC I CC2 V CC active current (Store) (EE- PROM Store) 250 500 µA CS = V IH , U/D = V IL or V IH and INC = V IH @ max. t WR I SB Standby supply current 0.5 2 µA CS = V CC – 0.3V, U/D and INC = V SS or V CC – 0.3V I LI CS, INC, U/D input leakage current -15 µA V IN = V SS V IH CS, INC, U/D input HIGH voltage V CC x 0.7 V CC + 0.5 V VIL CS, INC, U/D input LOW voltage –0.5 V CC x 0.1 V CIN(5) CS, INC, U/D input capacitance 10 pF V CC = 5V, VIN = VSS, TA = 25°C, f = 1MHz Parameter Min. Unit Minimum endurance 100,000 Data changes per bit Data retention 100 Years A.C. CONDITIONS OF TEST Input pulse levels 0V to 3V Input rise and fall times 10ns Input reference levels 1.5V

5 of 10REV 1.4.7 9/8/03 www.xicor.com X90100 A.C. OPERATING CHARACTERISTICS (VCC = 5V, TA = 25°C unless otherwise specified) A.C. TIMING Notes: (6) MI in the A.C. timing diagram refers to the minimum incremental change in the CTOTAL output due to a change in the counter value. (7) tIH + tIL ≥ 4µs Symbol Parameter Limits UnitMin. Typ. (4) Max. tCl CS to INC setup 100 ns tlD INC HIGH to U/D change 100 ns tDI U/D to INC setup 100 ns tlL(7) INC LOW period 1 µs tlH(7) INC HIGH period 1 µs tlC INC Inactive to CS inactive 1 µs tCPHNS(5) CS Deselect time (NO STORE) 1 µs tCPHS(5) CS Deselect time (STORE) 10 ms tIW INC to CTOTAL change 1 5 µs tCYC INC cycle time 4 µs tR, tF(5) INC input rise and fall time 500 µs tPU(5) Power up to capacitance stable 5 µs tR VCC(5) VCC power-up rate 0.2 50 V/ms tWR(5) Store cycle 5 10 ms CS INC U/D CTOTAL tCI tIL tIH tCYC tID tIW MI (6) tIC tCPHS tF tR 10% 90% 90% (Store) tDI tCPHNS

6 of 10REV 1.4.7 9/8/03 www.xicor.com X90100 POWER UP TIMING (DIGITAL INPUTS FLOATING, INTERNAL PULLUP ACTION SHOWN) POWER UP AND DOWN REQUIREMENTS There are no restrictions on the power-up or power-down conditions of VCC and the voltages applied to the Cp, Cm pins provided that VCC is always more positive than or equal to VCp, VCm, i.e., VCC ≥ VCp, VCm. The VCC ramp rate spec is always in effect. Powerup Requirements In order to prevent unwanted tap position changes or an inadvertant store, bring the CS and INC high before or concurrently with the VCC pin. The logic inputs have internal active pullups to provide reliable powerup operation. See powerup timing diagram. VCC CS INC U/D VCC = 3.3 or 5.0V tRVCC

7 of 10REV 1.4.7 9/8/03 www.xicor.com X90100 PIN CONFIGURATION DETAILED PIN DESCRIPTIONS Cp and 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 V SS and the maximum is V CC. The value of capacitance across the terminals is determined by digital inputs INC , U/D, and CS. Up/Down (U/D) The U/D input controls the direction of the trimmed capacitor value and whether the counter is incre- mented or decremented. This pin has an active current source pullup. 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. This pin has an active current source pullup. 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. This pin has active circuit source pullup. N/C - This pin should be left floating. PIN NAMES PRINCIPLES OF OPERATION There are three sections of the X90100: the input con- trol, counter and decode section; the nonvolatile mem- ory; and the capacitor array. The input control section operates just like an up/down counter. The output of this counter is decoded to turn on electronic switches connecting internal units to the sum capacitor. Under the proper conditions the contents of the counter can be stored in nonvolatile memory and retained for future use. The capacitor array is comprised of 31 individual capacitors connected in parallel. At one end of each element is an electronic switch that connects it to the sum. The capacitor, when at either end of the range, acts like its mechanical equivalent and does not move beyond the last position. That is, the counter does not wrap around when clocked to either extreme. The electronic switches on the device operate in a “make before break” mode when the counter changes positions. If the counter is moved several positions, multiple units are connected to the total for t IW (INC to CTOTAL change). The CTOTAL value for the device can temporarily be increased by a significant amount if the counter is moved several positions. VCC CS INC U/D X90100 MSOP N/C (leave floating) Cm Vss Cp Symbol Default Description Cp output Positive capacitor terminal Cm output Negative capacitor terminal VSS supply Ground VCC supply Positive supply voltage U/D pull up Up/Down control input INC pull up Increment control input CS pull up Chip Select control input

8 of 10REV 1.4.7 9/8/03 www.xicor.com When the device is powered-down, the last counter position stored will be maintained in the nonvolatile memory. When power is restored, the contents of the memory are recalled and the capacitor is set to the value last stored. INSTRUCTIONS AND PROGRAMMING The INC , U/D and CS inputs control the movement of the capacitor total value. With CS set LOW the device is selected and enabled to respond to the U/D and INC inputs. HIGH to LOW transitions on INC will increment or decrement (depending on the state of the U/D input) a five bit counter. The output of this counter is decoded to select one of thirty two capacitor combinations for the capacitor array. The value of the counter is stored in nonvolatile mem- ory whenever CS transitions HIGH while the INC input is also HIGH. The system may select the X90100, move the capaci- tor value and deselect the device without having to store the latest count total in nonvolatile memory. After the count movement is performed as described above and once the new position is reached, the system must keep INC LOW while taking CS HIGH. The new C TO- TAL value will be maintained until changed by the sys- tem or until a power-up/down cycle recalled the previously stored data. This procedure allows the system to always power-up to a preset value stored in nonvolatile memory; then during system operation minor adjustments can be made. The adjustments might be based on user prefer- ence, system parameter changes due to temperature drift, etc. The state of U/D may be changed while CS remains LOW. This allows the host system to enable the device and then move the counter up and down until the proper trim is attained. MODE SELECTION CS INC U/D Mode L H Cap value Up L L Cap value Down H X Store Cap Position H X X Standby Current L X No Store, Return to Standby L H Cap value Up (not recommended) L L Cap value Down (not recommended) TABLE OF VALUES Single-Ended Mode Differential Mode COUT = Code

• 7.0 + 7.5 (pF) 0 ≤ Code ≤ 31 COUT = Code • 0.35 + 1.00 (pF) 0 ≤ Code ≤ 31 Cp Cm X90100 Oscillator Circuit Cp Cm X90100 Oscillator Circuit Cp Cs Example of a single-ended circuit Example of a differential mode circuit

9 of 10REV 1.4.7 9/8/03 www.xicor.com X90100 PACKAGING INFORMATION

8 Bump FCP Package

Note: Coordinate (0,0) is at package center Symbol Min Nominal Max Millimeters Package Width a 1.322 1.352 1.382 Package Length b 1.297 1.327 1.357 Package Height c 0.466 0.506 0.546 Body Thickness d 0.381 0.406 0.431 Ball Height e 0.085 0.100 0.115 Ball Diameter f 0.100 0.125 0.140 Bump Name X coordinate, µm Y coordinate, µm 1C S 28.4 478.8 2 NC/Test 352.9 471.8 CC -488.6 351.3 4 Cm 491.9 210.8 5 Cp 491.9 -218.2

6 INC

-491.6 -382.7 8V SS 373.4 -488.7 a b c d f e e Bottom View (Bumped Side) Side View Side View 1 2 3 AGC YWW

Characteristics subject to change without notice. 10 of 10 LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale onl y. Xicor, Inc. makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the descr ibed devices from patent infringement. Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice. Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, or licenses are implied. TRADEMARK DISCLAIMER: Xicor and the Xicor logo are registered trademarks of Xicor, Inc. AutoStore, Direct Write, Block Lock, SerialFlash, MPS, BiasLock and XDCP are also trademarks of Xicor, Inc. All others belong to their respective owners. U.S. PATENTS Xicor products are covered by one or more of the following U.S. Patents: 4,326,134; 4,393,481; 4,404,475; 4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 5,161,137; 5,219,774; 5,270,927; 5,324,676; 5,434,396; 5,544,103; 5,587,573; 5,835,409; 5,977,585. Foreign patents and additional patents pending. LIFE RELATED POLICY In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error detection and correction, redundancy and back-up features to prevent such an occurrence. Xicor’s products are not authorized for use in critical components in life support devices or systems. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ©Xicor, Inc. 2003 Patents Pending REV 1.4.7 9/8/03 www.xicor.com X90100 PACKAGING INFORMATION 0.118 ± 0.002 (3.00 ± 0.05) 0.040 ± 0.002 (1.02 ± 0.05) 0.150 (3.81) Ref. 0.193 (4.90) 0.030 (0.76) 0.036 (0.91) 0.032 (0.81) 0.007 (0.18) 0.005 (0.13) 0.008 (0.20) 0.004 (0.10) 0.0216 (0.55) 7° Typ. R 0.014 (0.36) 0.118 ± 0.002 (3.00 ± 0.05) 8-Lead Miniature Small Outline Gull Wing Package Type M NOTE: 1. ALL DIMENSIONS IN INCHES AND (MILLIMETERS) 0.220" 0.0256" Typical 0.025" Typical 0.020" Typical

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