View X9C102P_338910.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Digitally Controlled Potentiometer (XDCPTM)
FEATURES * Solid-state potentiometer * 3-wire serial interface * 100 wiper tap points --Wiper position stored in nonvolatile memory and recalled on power-up * 99 resistive elements --Temperature compensated --End to end resistance, 20% --Terminal voltages, 5V * Low power CMOS --VCC = 5V --Active current, 3mA max. --Standby current, 750A max. * High reliability --Endurance, 100,000 data changes per bit --Register data retention, 100 years * X9C102 = 1 k * X9C103 = 10 k * X9C503 = 50 k * X9C104 = 100 k * Packages --8-lead SOIC and DIP DESCRIPTION
X9C102/103/104/503
The X9Cxxx are Xicor digitally controlled (XDCP) potentiometers. The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a threewire interface. The potentiometer is implemented by a resistor array composed of 99 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including: - control - parameter adjustments - signal processing
BLOCK DIAGRAM
U/D INC CS VCC (Supply Voltage) 7-Bit Up/Down Counter 99 98 97 Up/Down (U/D) Increment (INC) Device Select (CS) VH/RH Control and Memory RW/VW VL/RL Store and Recall Control Circuitry 7-Bit Nonvolatile Memory 96 One of OneHundred Decoder 2 1 0 RL/VL RW/VW Detailed RH/VH
Transfer Gates
Resistor Array
VSS (Ground) General
VCC GND
XDCP is a trademark of Xicor, Inc. REV 1.1.7 6/24/03
www.xicor.com
1 of 12
X9C102/103/104/503
PIN CONFIGURATION
DIP/SOIC INC U/D VH/RH VSS 1 2 3 4 X9C102/103/104/503 8 7 6 5 VCC CS VL/RL VW/RW
ORDERING INFORMATION
Part Number
X9C102P X9C102PI X9C102S X9C102SI X9C103P X9C103PI X9C103S X9C103SI X9C104P X9C104PI X9C104S X9C104SI X9C503P X9C503PI X9C503S X9C503SI
Temperature Range
0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C 0C TO +70C -40C TO +85C
Package
8-Lead Plastic DIP 8-Lead Plastic DIP 8-Lead SOIC 8-Lead SOIC 8-Lead Plastic DIP 8-Lead Plastic DIP 8-Lead SOIC 8-Lead SOIC 8-Lead Plastic DIP 8-Lead Plastic DIP 8-Lead SOIC 8-Lead SOIC 8-Lead Plastic DIP 8-Lead Plastic DIP 8-Lead SOIC 8-Lead SOIC
End to End Resistance
1 k 1 k 1 k 1 k 10 k 10 k 10 k 10 k 100 k 100 k 100 k 100 k 50 k 50 k 50 k 50 k
REV 1.1.7 6/24/03
www.xicor.com
2 of 12
X9C102/103/104/503
PIN DESCRIPTIONS Pin
1 2 3
Symbol
INC U/D RH/VH
Brief Description
Increment . The INC input is negative-edge triggered. Toggling INC will move the wiper and either increment or decrement the counter in the direction indicated by the logic level on the U/D input.
Up/Down. The U/D input controls the direction of the wiper movement and whether the counter is incremented or decremented. terminals of a mechanical potentiometer. The minimum voltage is -5V and the maximum is +5V. The terminology of VH/RH and VL/RL references the relative position of the terminal in relation to wiper movement direction selected by the U/D input and not the voltage potential on the terminal.
VSS RH/VH. The high (VH/RH) terminals of the X9C102/103/104/503 are equivalent to the fixed
4 5
VSS
VW/RW
VW/RW. VW/RW is the wiper terminal, and is equivalent to the movable terminal of a mechanical potentiometer. The position of the wiper within the array is determined by the control inputs. The wiper terminal series resistance is typically 40. RL/VL. The low (VL/RL) terminals of the X9C102/103/104/503 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is -5V and the maximum is +5V. The terminology of VH/RH and VL/RL references the relative position of the terminal in relation to wiper movement direction selected by the U/D input and not the voltage potential on the terminal.
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 X9C102/103/104/503 device will be placed in the low power standby mode until the device is selected once again. VCC
6
RL/VL
7
CS
8
VCC
REV 1.1.7 6/24/03
www.xicor.com
3 of 12
X9C102/103/104/503
ABSOLUTE MAXIMUM RATINGS Temperature under bias ....................-65C to +135C Storage temperature .........................-65C to +150C Voltage on CS, INC, U/D and VCC with respect to VSS .................................. -1V to +7V Voltage on VH/RH and VL/RL referenced to VSS ................................... -8V to +8V V = |VH/RH-VL/RL| X9C102 ............................................................... 4V X9C103, X9C503, and X9C104 ......................... 10V Lead temperature (soldering, 10 seconds)...... +300C IW (10 seconds) ................................................ 8.8mA RECOMMENDED OPERATING CONDITIONS Temperature
Commercial Industrial
COMMENT Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; 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.
Min.
0C -40C
Max.
+70C +85C
Supply Voltage (VCC)
X9C102/103/104/503
Limits
5V 10%
POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.) Limits Symbol
RTOTAL VVH/RH VVL/RL
Parameter
End to end resistance variation VH terminal voltage VL terminal voltage Power rating Power rating
Min.
-20 -5 -5
Typ.
Max.
+20 +5 +5 16 10
Unit
% V V mW mW mA dBV %
Test Conditions/Notes
X9C102 X9C103/104/503 Wiper Current = 1mA Ref. 1kHz VW(n)(actual)-VW(n)(expected) VW(n + 1)(actual)-[VW(n) + MI] X9C103/503/104 X9C102 See Circuit #3, Macro Model
IW RW
Wiper current Wiper resistance Noise Resolution Absolute linearity Relative
(1)
-4.4 40 -120 1 -1 -0.2 300 600
4.4 100
+1 +0.2
M(3) MI(3) ppm/C ppm/C
linearity(2)
RTOTAL temperature coefficient RTOTAL temperature coefficient Ratiometric temperature coefficient CH/CL/CW
Notes: (1) (2) (3) (4) (5)
20 10/10/25
ppm/C pF
Potentiometer capacitances
Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = [VW(n)(actual)-VW(n)(expected )] = 1 MI Maximum. Relative linearity is a measure of the error in step size between taps = VW(n + 1)-[VW(n) + MI] = +0.2 MI. 1 MI = Minimum Increment = RTOT/99 Typical values are for TA = 25C and nominal supply voltage. This parameter is not 100% tested.
REV 1.1.7 6/24/03
www.xicor.com
4 of 12
X9C102/103/104/503
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.) Limits Symbol
ICC ISB ILI VIH VIL CIN(2)
Parameter
VCC active current Standby supply current CS, INC, U/D input leakage current CS, INC, U/D input HIGH voltage CS, INC, U/D input LOW voltage CS, INC, U/D input capacitance
Min. Typ.(4)
1 200
Max.
3 750 10
Unit
mA A A V V pF
Test Conditions
CS = VIL, U/D = VIL or VIH and INC = 0.4V to 2.4V @ max. tCYC CS = VCC - 0.3V, U/D and INC = VSS or VCC - 0.3V VIN = VSS to VCC
2 -1
VCC + 1 0.8 10
VCC = 5V, VIN = VSS, TA = 25C, f = 1MHz
ENDURANCE AND DATA RETENTION Parameter
Minimum endurance Data retention
Min.
100,000 100
Unit
Data changes per bit per register years
Test Circuit #1
V R/R H
Test Circuit #2
VH/RH Test Point
Test Circuit #3
Macro Model RTOTAL RL CL 10pF CH CW 10pF 25pF RW RH
VS
Test Point V W /R W V L /R L
VW/RW Force Current VL/RL
REV 1.1.7 6/24/03
www.xicor.com
5 of 12
X9C102/103/104/503
A.C. CONDITIONS OF TEST
Input pulse levels Input rise and fall times Input reference levels 0V to 3V 10ns 1.5V
A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified) Symbol
tCl tlD tDI tlL tlH tlC tCPH tCPH tIW tCYC tR, tF(7) tPU(7) tR VCC
(7)
Parameter
CS to INC setup INC HIGH to U/D change U/D to INC setup INC LOW period INC HIGH period INC inactive to CS inactive CS deselect time (STORE) CS deselect time (NO STORE) INC to VW/RW change INC cycle time INC input rise and fall time Power up to wiper stable VCC power-up rate
Min.
100 100 2.9 1 1 1 20 100
Limits Typ.(6)
Max.
Unit
ns ns s s s s ms ns
100 4
500 500 500
s s s s V/ms
0.2
50
POWER UP AND DOWN REQUIREMENTS At all times, voltages on the potentiometer pins must be less than VCC. The recall of the wiper position from nonvolatile memory is not in effect until the VCC supply reaches its final value. The VCC ramp rate spec is always in effect. A.C. TIMING
CS tCYC tCI INC tID U/D tIW VW MI (8) tDI tF tIL tIH tIC tCPH 90% 90% 10% tR
Notes: (6) Typical values are for TA = 25C and nominal supply voltage. (7) This parameter is periodically sampled and not 100% tested. (8) MI in the A.C. timing diagram refers to the minimum incremental change in the VW output due to a change in the wiper position.
REV 1.1.7 6/24/03
www.xicor.com
6 of 12
X9C102/103/104/503
DETAILED PIN DESCRIPTIONS RH/VH and RL/VL The high (VH/RH) and low (VL/RL) terminals of the X9C102/103/104/503 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is -5V and the maximum is +5V. The terminology of VH/RH and VL/RL references the relative position of the terminal in relation to wiper movement direction selected by the U/D input and not the voltage potential on the terminal. RW/VW VW/RW is the wiper terminal, and is equivalent to the movable terminal of a mechanical potentiometer. The position of the wiper within the array is determined by the control inputs. The wiper terminal series resistance is typically 40. Up/Down (U/D) The U/D input controls the direction of the wiper movement and whether the counter is incremented or decremented. Increment (INC) The INC input is negative-edge triggered. Toggling INC will move the wiper and either increment or decrement the counter in the direction indicated by the logic level on the U/D input. 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 X9C102/103/104/503 device will be placed in the low power standby mode until the device is selected once again. PIN CONFIGURATION
DIP/SOIC INC U/D VH/RH VSS 1 2 3 4 X9C102/103/104/503 8 7 6 5 VCC CS VL/RL VW/RW
PIN NAMES Symbol
VH /RH VW/RW VL/RL VSS VCC U/D INC CS NC
Description
High Terminal Wiper Terminal Low Terminal Ground Supply Voltage Up/Down Control Input Increment Control Input Chip Select Control Input No Connection
PRINCIPLES OF OPERATION There are three sections of the X9Cxxx: the input control, counter and decode section; the nonvolatile memory; and the resistor array. The input control section operates just like an up/down counter. The output of this counter is decoded to turn on a single electronic switch connecting a point on the resistor array to the wiper output. Under the proper conditions the contents of the counter can be stored in nonvolatile memory and retained for future use. The resistor array is comprised of 99 individual resistors connected in series. At either end of the array and between each resistor is an electronic switch that transfers the potential at that point to the wiper. The wiper, when at either fixed terminal, 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 wiper changes tap positions. If the wiper is moved several positions, multiple taps are connected to the wiper for tIW (INC to VW/RW change). The RTOTAL value for the device can temporarily be reduced by a significant amount if the wiper is moved several positions. When the device is powered-down, the last wiper position stored will be maintained in the nonvolatile memory. When power is restored, the contents of the memory are recalled and the wiper is set to the value last stored.
REV 1.1.7 6/24/03
www.xicor.com
7 of 12
X9C102/103/104/503
INSTRUCTIONS AND PROGRAMMING The INC, U/D and CS inputs control the movement of the wiper along the resistor array. 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 seven-bit counter. The output of this counter is decoded to select one of one-hundred wiper positions along the resistive array. The value of the counter is stored in nonvolatile memory whenever CS transitions HIGH while the INC input is also HIGH. The system may select the X9Cxxx, move the wiper, and deselect the device without having to store the latest wiper position in nonvolatile memory. After the wiper 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 wiper position will be maintained until changed by the system or until a power-down/up 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 could be made. The adjustments might be based on user preference: 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 wiper up and down until the proper trim is attained. MODE SELECTION CS
L L H H X L L L
INC
U/D
H L X X X H L Wiper Up Wiper Down
Mode
Store Wiper Position Standby Current No Store, Return to Standby Wiper Up (not recommended) Wiper Down (not recommended)
SYMBOL TABLE
WAVEFORM INPUTS Must be steady May change from Low to High May change from High to Low Don't Care: Changes Allowed N/A OUTPUTS Will be steady Will change from Low to High Will change from High to Low Changing: State Not Known Center Line is High Impedance
REV 1.1.7 6/24/03
www.xicor.com
8 of 12
X9C102/103/104/503
PERFORMANCE CHARACTERISTICS Contact the factory for more information. APPLICATIONS INFORMATION Electronic digitally controlled (XCDP) potentiometers provide three powerful application advantages; (1) the variability and reliability of a solid-state potentiometer, (2) the flexibility of computer-based digital controls, and (3) the retentivity of nonvolatile memory used for the storage of multiple potentiometer settings or data. Basic Configurations of Electronic Potentiometers
VR VH/RH VW/RW VL/RL I Three terminal potentiometer; variable voltage divider Two terminal variable resistor; variable current VR
Basic Circuits
Buffered Reference Voltage R1 +V +5V VREF VW + - -5V VOUT = VW/RW (a) (b) OP-07 VOUT +V R1 VW/RW VO = (1+R2/R1)VS VW/RW X Cascading Techniques +V +V Noninverting Amplifier +5V VS + - -5V R2 LM308A VO
Voltage Regulator
Offset Voltage Adjustment R1 R2
Comparator with Hysteresis VS LT311A - + VO
VIN
317 R1
VO (REG)
VS 100K - + VO
}
}
Iadj R2 10K 10K VO (REG) = 1.25V (1+R2/R1)+Iadj R2 +12V -12V 10K
TL072
R1
R2
VUL = {R1/(R1+R2)} VO(max) VLL = {R1/(R1+R2)} VO(min) (for additional circuits see AN115) 9 of 12
REV 1.1.7 6/24/03
www.xicor.com
X9C102/103/104/503
PACKAGING INFORMATION 8-Lead Plastic Dual In-Line Package Type P
0.430 (10.92) 0.360 (9.14)
0.260 (6.60) 0.240 (6.10) Pin 1 Index Pin 1 0.300 (7.62) Ref. 0.060 (1.52) 0.020 (0.51)
Half Shoulder Width On All End Pins Optional Seating Plane 0.150 (3.81) 0.125 (3.18)
0.145 (3.68) 0.128 (3.25) 0.025 (0.64) 0.015 (0.38) 0.065 (1.65) 0.045 (1.14) 0.020 (0.51) 0.016 (0.41)
0.110 (2.79) 0.090 (2.29)
.073 (1.84) Max.
0.325 (8.25) 0.300 (7.62)
Typ. 0.010 (0.25)
0 15
NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH
REV 1.1.7 6/24/03
www.xicor.com
10 of 12
X9C102/103/104/503
PACKAGING INFORMATION 8-Lead Plastic Small Outline Gull Wing Package Type S
0.150 (3.80) 0.228 (5.80) 0.158 (4.00) 0.244 (6.20) Pin 1 Index Pin 1
0.014 (0.35) 0.019 (0.49) 0.188 (4.78) 0.197 (5.00) (4X) 7
0.053 (1.35) 0.069 (1.75) 0.004 (0.19) 0.010 (0.25)
0.050 (1.27)
0.010 (0.25) X 45 0.020 (0.50)
0.050" Typical
0 - 8 0.0075 (0.19) 0.010 (0.25) 0.016 (0.410) 0.037 (0.937) 0.250"
0.050" Typical
FOOTPRINT
0.030" Typical 8 Places
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
-
REV 1.1.7 6/24/03
www.xicor.com
11 of 12
X9C102/103/104/503
LIMITED WARRANTY
(c)Xicor, Inc. 2003 Patents Pending
Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described 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; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829,482; 4,874,967; 4,883,976; 4,980,859; 5,012,132; 5,003,197; 5,023,694; 5,084,667; 5,153,880; 5,153,691; 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.
REV 1.1.7 6/24/03
www.xicor.com
Characteristics subject to change without notice.
12 of 12

▲Up To Search▲

Price & Availability of X9C102P

	To Download X9C102P Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .