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Part: CAT5116UI-TE13
Category:
Analog & Mixed-Signal Processing
-> Potentiometers
-> Digital Potentiometers
Description: 100-Tap, Log-taper DPP
Company: Catalyst Semiconductor
Datasheet: Download CAT5116UI-TE13 datasheet File size : 32 kB
Request For quote: Find where to buy CAT5116UI-TE13
Datasheet text preview:
CAT5116
CAT5116
Log-Taper, 100-Tap Digitally Programmable Potentiometer (DPPTM) FEATURES
s 100-position, log-taper potentiometer s Non-volatile EEPROM wiper storage s 10nA ultra-low standby current s Single-supply operation: 2.5V - 5.5V s Increment Up/Down serial interface s Resistance value: 32k s Available in 8-pin MSOP, TSSOP, SOIC and DIP packages
H
GEN FR ALO
EE
APPLICATIONS
s Remote control adjustments s Offset, gain and zero control s Audio volume control s Sensor adjustment
LE
A D F R E ETM
s Automated product calibration
s Motor controls and feedback systems s Programmable analog functions
DESCRIPTION
T h e CAT5116 is a log-taper single digitally programmable potentiometer (DPPTM) designed as a electronic replacement for mechanical potentiometers and trim pots. Ideal for automated adjustments on high volume p r o d u c t i o n lines, DPP ICs are well suited for a p p l i c a t i o n s 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 wiper setting, stored in nonvolatile memory, is not l o s t when the device is powered down and is 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. The digitally programmable potentiometer can be used as a three-terminal resistive divider or as a two-terminal variable resistor.
FUNCTIONAL DIAGRAM
VCC
VCC U/D INC CS
CONTROL AND MEMORY
RH
RH
RH
UP/DOWN
U/D
INTERFACE & WIPER CONTROL
RW
Potentiometer R = 32k
RW
INCREMENT
INC
CHIP SELECT
RW
EEPROM
CS
POR
RL
GND
RL
GND
RL
GENERAL
BLOCK DIAGRAM
POTENTIOMETER SCHEMATIC
© 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
1 1
Doc. No. 2118, Rev. J 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 VCC CS RL RW
PIN FUNCTIONS
TSSOP Package (U, Y)
Pin Name INC U/D RH GND
Function Increment Control Up/Down Control Potentiometer High Terminal Ground Potentiometer Wiper Terminal Potentiometer Low Terminal Chip Select Supply Voltage
CS VCC INC U/D
1 2 3 4
8 7 6 5
RL RW GND RH
SOIC Package (S, V)
INC U/D RH GND 1 2 3 4 8 7 6 5 VCC CS RL RW
MSOP Package (R, Z)
INC U/D RH GND 1 2 3 4 8 7 6 5 VCC CS RL RW
RW RL CS VCC
PIN DESCRIPTIONS
INC: Increment Control Input The INC input moves the wiper in the up or down direction determined by the condition of the U/D input. U/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 b e l o w ground, GND. R L and R H are electrically interchangeable.
Doc. No. 2118, Rev. J
CS: Chip Select 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.
2
CAT5116
ABSOLUTE MAXIMUM RATINGS
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 Operating Ambient Temperature ........ -40°C to +85°C 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
VZAP(1) ILTH(1)(2) TDR NEND
Parameter
ESD Susceptibility Latch-Up Data Retention Endurance
Test Method
MIL-STD-883, Test Method 3015 JEDEC Standard 17 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 1003
Min
2000 100 100 1,000,000
Typ
Max
Units
Volts mA Years Stores
DC ELECTRICAL CHARACTERISTICS: VCC = 2.5V to 5.5V unless otherwise specified.
Power Supply Symbol Parameter
VCC ICC1(3) ICC2 ISB1 Operating Voltage Range Supply Current (Increment) Supply Current (Write) Supply Current (Standby)
Conditions
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
Min
2.5
Typ
Max
5.5 100 50 1 500
Units
V µA mA µA µA
0.01
1
Logic Inputs Symbol
IIH IIL VIH1 VIL1 VIH2 VIL2
NOTES:
Parameter
Input Leakage Current Input Leakage Current TTL High Level Input Voltage TTL Low Level Input Voltage CMOS High Level Input Voltage CMOS Low Level Input Voltage
Conditions
VIN = VCC VIN = 0V 4.5V VCC 5.5V 2.5V VCC 5.5V
Min
Typ
Max
10 -10 VCC 0.8 VCC + 0.3 VCC x 0.2
Units
µA µA V V V V
2 0 VCC x 0.7 -0.3
(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 RPOT RTOL VRH VRL RV
*
Parameter Potentiometer Resistance Pot Resistance Tolerance Voltage on RH pin Voltage on RL pin Relative Variation Wiper Resistance Wiper Current TC of Pot Resistance Ratiometric TC Noise Potentiometer Capacitances Frequency Response
Conditions
Min
Typ 32
Max ± 20
Units k % V V mA ppm/oC
0 0
VCC VCC 0.05
RWi IW TCRPOT TCRATIO VN CH/CL/CW fc
VCC = 5V, IW = 1mA VCC = 2.5V, IW = 1mA
200 400
400 1000 1
300 20 100kHz / 1kHz 8/24 8/8/25 Passive Attenuator, 10k 1.7
ppm/oC nV/ Hz pF 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 Input Pulse Levels Input Rise and Fall Times Input Reference Levels 2.5V VCC 5.5V 0.2VCC to 0.7VCC 10ns 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 t CPH1 t CPH2 tIW tCYC tR, tF(2) tPU(2) t WR
Parameter
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
Min
100 50 100 250 250 1 100 10
Typ(1)
Max
Units
ns ns ns ns ns µs ns ms µs µs µs msec ms
1 1
5 500 1 10
5
Doc. No. 2118, Rev. J
4
CAT5116
TYPICAL CHARACTERISTICS
VCC = 5V, TAMB = 25°C,unless otherwise specified
Wiper-Low/High Resistances vs. Wiper Position
100 90 Tot al Resistance (%) 70 60 50 40 30 20 10 0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 RH- RW RW-RL
Wiper-Low Resistance vs. Wiper Position (log scale)
100.0
Total Resistance (%) .
80
10.0
1.0
0.1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
W I P E R POSITION
W I P E R POSITION
Wiper Resistance vs. Wiper Voltage
STANDBY CURRENT [nA] .
600 WIPER RESISTANCE [ohm] 500 400 300 200 100 0 0 1 2 3 4 W IP ER VOLTAGE[V] 5 6 Vcc = 4.4V Ta p 84 Vcc = 3.0V Ta p 84
Standby Supply Current vs. Temperature
100 80 60 40 20 Vc c = 2.5 V 0 -40 -15 10 35 60 85
TEMPERATURE [°C]
Vc c = 5 V
5
Doc. No. 2118, Rev. J
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