CAT5116 H CAT5116 EE GEN FR ALO Log-Taper, 100-Tap Digitally Programmable Potentiometer (DPP™) LE A D F R E ETM FEATURES APPLICATIONS ■ 100-position, log-taper potentiometer ■ Automated product calibration ■ Non-volatile EEPROM wiper storage ■ Remote control adjustments ■ 10nA ultra-low standby current ■ Offset, gain and zero control ■ Single-supply operation: 2.5V - 5.5V ■ Audio volume control ■ Increment Up/Down serial interface ■ Sensor adjustment Ω ■ Resistance value: 32kΩ ■ Motor controls and feedback systems ■ Available in 8-pin MSOP, TSSOP, SOIC and DIP packages ■ Programmable analog functions DESCRIPTION The CAT5116 is a log-taper single digitally programmable potentiometer (DPP™) designed as a electronic replacement for mechanical potentiometers and trim pots. automatically reinstated when power is returned. The wiper can be adjusted to test new system values without effecting the stored setting. Wiper-control of the CAT5116 is accomplished with three input control pins, CS, U/D, and INC. The INC input increments the wiper in the direction which is determined by the logic state of the U/D input. The CS input is used to select the device and also store the wiper position prior to power down. Ideal for automated adjustments on high volume production lines, DPP ICs are well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment. The CAT5116 contains a 100-tap series resistor array connected between two terminals RH and RL. An up/ down counter and decoder that are controlled by three input pins, determines which tap is connected to the wiper, RW. The digitally programmable potentiometer can be used as a three-terminal resistive divider or as a two-terminal variable resistor. The wiper setting, stored in nonvolatile memory, is not lost when the device is powered down and is FUNCTIONAL DIAGRAM RH VCC VCC RH U/D INC INTERFACE & WIPER CONTROL INC UP/DOWN INCREMENT U/D CS CONTROL AND MEMORY RH RW Potentiometer R = 32kΩ RW RW EEPROM CHIP SELECT CS POR RL GND RL GND GENERAL © 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice RL BLOCK DIAGRAM POTENTIOMETER SCHEMATIC Doc. No. 2118, Rev. J 1 1 Doc. No. 2118, Rev. J CAT5116 PIN CONFIGURATION DIP Package (P, L) INC U/D RH GND 1 2 3 4 8 7 6 5 PIN FUNCTIONS Pin Name TSSOP Package (U, Y) VCC CS RL CS VCC RW U/D 1 2 3 4 INC SOIC Package (S, V) 8 7 6 5 RL RW GND RH MSOP Package (R, Z) INC U/D RH 1 8 VCC 2 3 7 6 CS RL GND 4 5 INC U/D RH RW GND 1 2 8 7 VCC 3 4 6 5 RL RW CS Function INC Increment Control U/D Up/Down Control RH Potentiometer High Terminal GND Ground RW Potentiometer Wiper Terminal RL Potentiometer Low Terminal CS Chip Select VCC Supply Voltage PIN DESCRIPTIONS INC INC: Increment Control Input CS CS: Chip Select The INC input moves the wiper in the up or down direction determined by the condition of the U/D input. The chip select input is used to activate the control input of the CAT5116 and is active low. When in a high state, activity on the INC and U/D inputs will not affect or change the position of the wiper. U/D D: Up/Down Control Input The U/D input controls the direction of the wiper movement. When in a high state and CS is low, any highto-low transition on INC will cause the wiper to move one increment toward the RH terminal. When in a low state and CS is low, any high-to-low transition on INC will cause the wiper to move one increment towards the RL terminal. RH: High End Potentiometer Terminal RH is the high end terminal of the potentiometer. It is not required that this terminal be connected to a potential greater than the RL terminal. Voltage applied to the RH terminal cannot exceed the supply voltage, VCC or go below ground, GND. RW: Wiper Potentiometer Terminal RW is the wiper terminal of the potentiometer. Its position on the resistor array is controlled by the control inputs, INC, U/D and CS. Voltage applied to the RW terminal cannot exceed the supply voltage, VCC or go below ground, GND. RL: Low End Potentiometer Terminal RL is the low end terminal of the potentiometer. It is not required that this terminal be connected to a potential less than the RH terminal. Voltage applied to the RL terminal cannot exceed the supply voltage, VCC or go below ground, GND. R L and R H are electrically interchangeable. Doc. No. 2118, Rev. J 2 CAT5116 ABSOLUTE MAXIMUM RATINGS Operating Ambient Temperature ........ -40°C to +85°C Supply Voltage VCC to GND ....................................... -0.5V to +7V Inputs CS to GND ........................ -0.5V to VCC to +0.5V INC to GND ....................... -0.5V to VCC to +0.5V U/D to GND ....................... -0.5V to VCC to +0.5V RH to GND ......................... -0.5V to VCC to +0.5V RL to GND ......................... -0.5V to VCC to +0.5V RW to GND ........................ -0.5V to VCC to +0.5V Junction Temperature (10 secs) ..................... +150°C Storage Temperature ...................................... +150°C Lead Soltering (10 sec max) ........................... +300°C *Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. Absolute Maximum Ratings are limited values applied individually while other parameters are within specified operating conditions, and functional operation at any of these conditions is NOT implied. Device performance and reliability may be impaired by exposure to absolute rating conditions for extended periods of time. RELIABILITY CHARACTERISTICS Symbol Parameter Test Method VZAP(1) ILTH(1)(2) ESD Susceptibility Latch-Up Data Retention Endurance MIL-STD-883, Test Method 3015 JEDEC Standard 17 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 1003 TDR NEND Min Typ Max 2000 100 100 1,000,000 Units Volts mA Years Stores DC ELECTRICAL CHARACTERISTICS: VCC = 2.5V to 5.5V unless otherwise specified. Power Supply Symbol Parameter VCC ICC1(3) Operating Voltage Range Supply Current (Increment) ICC2 Supply Current (Write) ISB1 Supply Current (Standby) Conditions Min Typ 2.5 Max Units 5.5 100 50 1 500 mA µA 1 µA Max Units 2 0 10 -10 VCC 0.8 µA µA V V VCC x 0.7 VCC + 0.3 V -0.3 VCC x 0.2 V VCC = 5.5V, f = 1MHz, IW=0 VCC = 5.5V, f = 250kHz, IW=0 Programming, VCC = 5.5V VCC = 3V CS=VCC-0.3V U/D, INC=VCC-0.3V or GND 0.01 V µA Logic Inputs Symbol Parameter Conditions IIH IIL VIH1 VIL1 Input Leakage Current Input Leakage Current TTL High Level Input Voltage TTL Low Level Input Voltage VIN = VCC VIN = 0V 4.5V ≤ VCC ≤ 5.5V VIH2 CMOS High Level Input Voltage 2.5V ≤ VCC ≤ 5.5V VIL2 CMOS Low Level Input Voltage NOTES: Min Typ (1) This parameter is tested initially and after a design or process change that affects the parameter. (2) Latch-up protection is provided for stresses up to 100mA on address and data pins from –1V to VCC + 1V (3) IW=source or sink 3 Doc. No. 2118, Rev. J CAT5116 POTENTIOMETER PARAMETERS Symbol Parameter Conditions RPOT Potentiometer Resistance RTOL Pot Resistance Tolerance VRH Voltage on RH pin VRL Voltage on RL pin * Relative Variation RWi Wiper Resistance RV IW Min Typ 32 TC of Pot Resistance TCRATIO Ratiometric TC % 0 VCC V 0 VCC V 0.05 VCC = 5V, IW = 1mA 200 400 VCC = 2.5V, IW = 1mA 400 1000 100kHz / 1kHz 8/24 Potentiometer Capacitances fc Frequency Response Passive Attenuator, 10kΩ Ω mA ppm/oC 300 20 Noise CH/CL/CW kΩ 1 TCRPOT Units ± 20 Wiper Current VN Max ppm/oC nV/ Hz 8/8/25 pF 1.7 MHz * Relative variation is a measure of the error in step size between taps = log (VW(N)) - log(VW(N-1)) = 0.045 + 0.003 AC TEST CONDITIONS VCC Range 2.5V ≤ VCC ≤ 5.5V Input Pulse Levels 0.2VCC to 0.7VCC Input Rise and Fall Times 10ns Input Reference Levels 0.5VCC AC OPERATING CHARACTERISTICS VCC = +2.5V to +5.5V, VH = VCC, VL = 0V, unless otherwise specified Symbol tCI tDI tID tIL tIH tIC tCPH1 tCPH2 tIW tCYC tR, tF(2) tPU(2) tWR Parameter Min CS to INC Setup U/D to INC Setup U/D to INC Hold INC LOW Period INC HIGH Period INC Inactive to CS Inactive CS Deselect Time (NO STORE) CS Deselect Time (STORE) INC to VOUT Change INC Cycle Time INC Input Rise and Fall Time Power-up to Wiper Stable Store Cycle 100 50 100 250 250 1 100 10 Doc. No. 2118, Rev. J Typ(1) Max 1 5 5 500 1 10 1 4 Units ns ns ns ns ns µs ns ms µs µs µs msec ms CAT5116 TYPICAL CHARACTERISTICS VCC = 5V, TAMB = 25°C,unless otherwise specified Wiper-Low/High Resistances vs. Wiper Position Wiper-Low Resistance vs. Wiper Position (log scale) 100 100.0 80 Total Resistance (%) . Total Resistance (%) 90 70 RH-RW 60 RW-RL 50 40 30 20 10.0 1.0 10 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 0.1 WIPER POSITION WIPER POSITION Wiper Resistance vs. Wiper Voltage Standby Supply Current vs. Temperature 100 STANDBY CURRENT [nA] . WIPER RESISTANCE [ohm] 600 Vcc = 3.0V Tap 84 500 400 300 200 Vcc = 4.4V Tap 84 100 0 0 1 2 3 4 WIPER VOLTAGE[V] 5 80 60 Vcc = 5 V 40 20 Vcc = 2.5 V 0 -40 6 -15 10 35 60 85 TEMPERATURE [°C] 5 Doc. No. 2118, Rev. J CAT5116 AC Timing CS (store) tCYC tCI tIL tIC tIH tCPH 90% INC 90% 10% tDI tID tR tF U/D MI (3) tIW RW (1) Typical values are for TA=25˚C and nominal supply voltage. (2) This parameter is periodically sampled and not 100% tested. (3) MI in the AC Timing diagram refers to the minimum incremental change in the W output due to a change in the wiper position. DEVICE OPERATION OPERATING MODES The CAT5116 operates like a digitally controlled potentiometer with RH and RL equivalent to the high and low terminals and RW equivalent to the mechanical potentiometer's wiper. There are 100 tap positions including the resistor end points, RH and RL. There are 99 resistor elements connected in series between the R H and R L terminals. The wiper terminal is connected to one of the 100 taps and is controlled by three inputs, INC, U/D and CS. These inputs control a seven-bit up/down counter whose output is decoded to select the wiper position. The selected wiper position can be stored in nonvolatile memory using the INC and CS inputs. With CS set LOW the CAT5116 is selected and will respond to the U/D and INC inputs. HIGH to LOW transitions on INC wil increment or decrement the wiper (depending on the state of the U/D input and seven-bit counter). The wiper, when at either fixed terminal, acts like its mechanical equivalent and does not move beyond the last position. The value of the counter is stored in nonvolatile memory whenever CS transitions HIGH while the INC input is also HIGH. When the CAT5116 is powered-down, the last stored wiper counter position is maintained in the nonvolatile memory. When power is restored, the contents of the memory are recalled and the counter is set to the value stored. With INC set low, the CAT5116 may be de-selected and powered down without storing the current wiper position in nonvolatile memory. This allows the system to always power up to a preset value stored in nonvolatile memory. Doc. No. 2118, Rev. J 6 INCBB CSBB U/DB Operation High to Low Low High High to Low Low Low Wiper Toward H Wiper Toward L X Store Wiper Position High Low to High Low Low to High X No Store, Return to Standby X High X Standby X: High or Low RH CH Rwi RW CW CL RL Potentiometer Equivalent Circuit CAT5116 ORDERING INFORMATION Prefix CAT Optional Company ID Device # 5116 Suffix S I Product Number TE13 Tape & Reel SOIC: 2000/Reel TSSOP: 2000/Reel MSOP: 2500/Reel Package P: PDIP S: SOIC U: TSSOP R: MSOP L: PDIP (Lead free, Halogen free) V: SOIC (Lead free, Halogen free) Y: TSSOP (Lead free, Halogen free) Z: MSOP (Lead free, Halogen free) Notes: (1) The device used in the above example is a CAT5116 SI-TE13 (SOIC, Industrial Temperature, Tape & Reel) 7 Doc. No. 2118, Rev. J REVISION HISTORY Date Rev. Reason 10/9/2003 G Revised Features Revised Potentiometer Schematic Revised DC Electrical Characteristics Updated Potentiometer Parameters 3/10/2004 H Updated Potentiometer Parameters 3/29/2004 I Changed Green Package marking for SOIC from W to V 4/12/2004 J Eliminated data sheet designation Updated Reel Ordering Information Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ AE2 ™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents issued to Catalyst Semiconductor contact the Company’s corporate office at 408.542.1000. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. Catalyst Semiconductor, Inc. Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com Publication #: Revison: Issue date: 2118 J 4/12/04