CAT5115VI-00

H EE GEN FR ALO Preliminary Information CAT5115 32-Tap Digitally Programmable Potentiometer (DPP™) LE A D F R E ETM FEATURES APPLICATIONS ■ 32-position, linear-taper potentiometer ■ Automated product calibration ■ Low power CMOS technology ■ Remote control adjustments ■ Single supply operation: 2.5V-5.5V ■ Offset, gain and zero control ■ Increment up/down serial interface ■ Tamper-proof calibrations Ω, 50kΩ Ω and 100kΩ Ω ■ Resistance values: 10kΩ ■ Contrast, brightness and volume controls ■ Available in PDIP, SOIC, TSSOP and MSOP packages ■ Motor controls and feedback systems ■ Programmable analog functions DESCRIPTION determined by the logic state of the U/D input. The CS input is used to select the device. The CAT5115 is a single digitally programmable potentiometer (DPP™) designed as a electronic replacement for mechanical potentiometers and trim pots. Ideal for automated adjustments on high volume production lines, they are also well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment. The digitally programmable potentiometer can be used as a three-terminal resistive divider or as a two-terminal variable resistor. DPPs bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing. The CAT5115 contains a 32-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 wiper is always set to the mid point, tap 15 at power up. The tap position is not stored in memory. Wiper-control of the CAT5115 is accomplished with three input control pins, CS, U/D, and INC. The INC input increments the wiper in the direction which is For a pin-compatible device that recalls a stored tap position on power-up refer to the CAT5114 data sheet. FUNCTIONAL DIAGRAM Vcc (Supply Voltage) U/D INC CS R H / VH 31 5-BIT UP/DOWN COUNTER VH /R H 30 R H / VH UP/DOWN (U/D) INCREMENT (INC) 29 Control and Memory R W / VW POR R L / VL DEVICE SELECT (CS) ONE 28 OF THIRTY TWO DECODER TRANSFER GATES VW / R W RESISTOR ARRAY 2 Vcc GND 1 CONTROL CIRCUITRY VSS 0 GENERAL © 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice VL / R L R L / VL R W / VW GENERAL DETAILED 1 ELECTRONIC POTENTIOMETER IMPLEMENTATION Doc. No. 2117, Rev. F CAT5115 PIN CONFIGURATION PIN FUNCTIONS DIP Package (P, L) INC U/D RH GND 1 8 VCC 2 7 3 6 CS RL 4 5 RW TSSOP Package (U, Y) CS VCC INC U/D SOIC Package (S, V) INC U/D RH GND 1 2 3 4 8 7 6 5 Pin Name RL INC Increment Control RW GND RH U/D Up/Down Control RH Potentiometer High Terminal GND Ground RW Potentiometer Wiper Terminal MSOP Package (R, Z) 1 8 VCC 2 7 3 6 CS RL INC U/D RH 4 5 RW GND Function 1 2 8 7 VCC CS RL Potentiometer Low Terminal 3 4 6 5 RL RW 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 CAT5115 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. DEVICE OPERATION The CAT5115 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 32 available tap positions including the resistor end points, RH and RL. There are 31 resistor elements connected in series between the RH and RL terminals. The wiper terminal is connected to one of the 32 taps and controlled by three inputs, INC, U/D and CS. These inputs control a five-bit up/down counter whose output is decoded to select the wiper position. 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. With CS set LOW the CAT5115 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 fivebit counter). The wiper, when at either fixed terminal, acts like its mechanical equivalent and does not move beyond the last position. When the CAT5115 is powereddown, the wiper position is reset. When power is restored, the counter is set to the mid point, tap 15. 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. 2117, Rev. F 2 CAT5115 OPERATION MODES INCBB CSBB RH U/DB Operation High to Low Low High Wiper toward H High to Low Low Low Wiper toward L X High X Standby CH Rwi RW CW CL RL Potentiometer Equivalent Circuit Operating Ambient Temperature Industrial (‘I’ suffix) ...................... – 40°C to +85°C Junction Temperature ..................................... +150°C Storage Temperature ....................... –65°C to +150°C Lead Soldering (10 sec max) .......................... +300°C ABSOLUTE MAXIMUM RATINGS Supply Voltage VCC to GND ...................................... –0.5V to +7V Inputs CS to GND .............................–0.5V to VCC +0.5V INC to GND ............................–0.5V to VCC +0.5V U/D to GND ............................–0.5V to VCC +0.5V H to GND ................................–0.5V to VCC +0.5V L to GND ................................–0.5V to VCC +0.5V W to GND ............................... –0.5V to VCC +0.5V * 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 Operating Voltage Range Supply Current (Increment) ISB1 (2) Supply Current (Standby) VCC = 5.5V, f = 1MHz, IW=0 VCC = 5.5V, f = 250kHz, IW=0 CS=VCC-0.3V U/D, INC=VCC-0.3V or GND Max 2000 100 100 1,000,000 DC Electrical Characteristics: VCC = +2.5V to +5.5V unless otherwise specified Power Supply Symbol Parameter Conditions Min VCC ICC1 Typ Units Volts mA Years Stores Typ Max Units 2.5 — — — — — 5.5 100 50 V µA — — 1 µA Min Typ Max Units 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 — — 2 0 — — — — 10 –10 VCC 0.8 µA µA V V VIH2 CMOS High Level Input Voltage 2.5V ≤ VCC ≤ 5.5V VCC x 0.7 — VCC + 0.3 V VIL2 CMOS Low Level Input Voltage -0.3 — VCC x 0.2 V NOTES: (1) (2) (3) (4) This parameter is tested initially and after a design or process change that affects the parameter. Latch-up protection is provided for stresses up to 100mA on address and data pins from –1V to VCC + 1V IW=source or sink These parameters are periodically sampled and are not 100% tested. 3 Doc. No. 2117, Rev. F CAT5115 Potentiometer Parameters Symbol RPOT Parameter Conditions Min Typ Potentiometer Resistance -10 Device 10 -50 Device 50 -00 Device 100 Pot Resistance Tolerance Max Units kΩ ± 20 % VRH Voltage on RH pin 0 VCC V VRL Voltage on RL pin 0 VCC V Resolution 3.2 % INL Integral Linearity Error IW ≤ 2µA 0.5 1 LSB DNL Differential Linearity Error IW ≤ 2µA 0.25 0.5 LSB RWi Wiper Resistance VCC = 5V, IW = 1mA 400 Ω 1 kΩ 1 mA VCC = 2.5V, IW = 1mA IW Wiper Current TCRPOT TC of Pot Resistance TCRATIO Ratiometric TC VN CH/CL/CW fc Doc. No. 2117, Rev. F Noise 20 100kHz / 1kHz Potentiometer Capacitances Frequency Response ppm/oC 300 Passive Attenuator, 10kΩ 4 ppm/oC 8/24 nV/√Hz 8/8/25 pF 1.7 MHz CAT5115 AC CONDITIONS OF TEST 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 Parameter Min Typ(1) Max Units tCI tDI tID tIL tIH tIC tCPH tIW tCYC tR, tF(2) tPU(2) 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 INC to VOUT Change INC Cycle Time INC Input Rise and Fall Time Power-up to Wiper Stable 100 50 100 250 250 1 100 — 1 — — — — — — — — — 1 — — — — — — — — — — 5 — 500 1 ns ns ns ns ns µs ns µs µs µs msec A. C. TIMING CS tCYC tCI tIL tIC tIH tCPH 90% INC 90% 10% tDI tID tF U/D tR MI (3) tIW RW (1) Typical values are for TA=25oC and nominal supply voltage. (2) This parameter is periodically sampled and not 100% tested. (3) MI in the A.C. Timing diagram refers to the minimum incremental change in the W output due to a change in the wiper position. 5 Doc. No. 2117, Rev. F CAT5115 APPLICATIONS INFORMATION Potentiometer Configurations (a) resistive divider (b) variable resistance (c) two-port Applications 3 V1 (-) 2 A1 + 1 R3 +5V R4 – +5V +5V +5V DPP 9 U/ R1 R2 10 R2 – + 4 8 A3 U/ VO 8 2 1 7 RA 11 4 RB CAT5114/5113/5115 V2 (+) 6 5 – + A2 R4 R3 +2.5V 7 { { R1 6 5 3 } } pRPOT 7 4 8 3 (1-p)RPOT 555 R2 5 6 2 1 C .01 F .01 F, .003 F Programmable Instrumentation Amplifier Programmable Sq. Wave Oscillator (555) IC3A 1/4 74HC132 7 OSC +5V 10k 0.01 F 20k +200mV U/D 1.00V = VREF ICIB +5V 2 Sensor 3 499k CAT5112/5111 IC2 – + 4 11 -5V 499k 1V + 50mV VSENSR Sensor Auto Referencing Circuit Doc. No. 2117, Rev. F + 5 – CS CS 6 499k VCORR 499k + INC – 6 1 VOUT = 1V + 1mV ICIA 100mV = VSHIFT CAT5115 APPLICATIONS INFORMATION 100k +5V 8 2 U/ CAT5114/5113 1 VOUT 7 V0 (REG) 4 2952 R1 11k VIN (UNREG) 6.8 F 1.23V FB SD GND 6 7 3 +5V 2 – 7 3 + 4 10k 6 2 – 7 3 + 4 A1 6 VO A2 IS R3 10k 5 Control and Memory POR 1M 5 8 1 330 3 +5V R2 820 +5V 2 (1-p)R } } .1 1 F LT1097 6 +2.5V CAT5114/5113/5115 4 Programmable Voltage Regulator Programmable I to V convertor R1 100k CAT5112/5111 R1 50k – C2 2 VS .001 +5V +5V +5V 3 Serial Bus 7 – 6 + VS + R1 +2.5V VO 4 R1 100k +5V 2 – 3 + 41 R 2.5k IS 11 100k R1 100k A1 R2 10k 7 A2 5 – R3 100k C1 .001 1 F +5V + U/ pR 330 SHUTDOWN 6 +2.5V +2.5V A1=A2=1/4 LMC6064A CAT5114/5113 Programmable Bandpass Filter Programmable Current Source/Sink +5V IC1 393 IC2 74HC132 1 OSC CLO – + 2 R1 VLL 3 R2 – + 7 10k 0.1 F CHI IC3 CAT5114/5113 6 5 R3 +5V VUL +5V +5V 8 2 U/D 1 INC 7 CS 6 10k 4 5 3 – + VO AI IC4 2.5V < VO < 5V VS +2.5V 0 < VS < 2.5V Automatic Gain Control 7 Doc. No. 2117, Rev. F CAT5115 ORDERING INFORMATION Prefix CAT Optional Company ID Device # 5115 Suffix S I -10 Resistance -10: 10kohms -50: 50kohms -00: 100kohms 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 CAT5115 SI-10TE13 (SOIC, 10K Ohms, Industrial Temperature, Tape & Reel) Doc. No. 2117, Rev. F 8 CAT5115 REVISION HISTORY Date Rev. Reason 9/25/2003 B Changed designation to Preliminary Updated Description Updated Potentiometer Parameters table 3/10/2004 C Updated Potentiometer Parameters table 3/29/2004 D Changed Green Package marking for SOIC from W to V 4/12/2004 E Updated Reel Ordering Information 8/31/2004 F Deleted ICC2 from DC Characteristics table Updated AC Operating Characteristics table Updated A.C. 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Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com Publication #: Revison: Issue date: Type: 9 2117 F 8/31/04 Preliminary Doc. No. 2117, Rev. F