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CAT5127, CAT5129 32-Tap Digitally Programmable Potentiometer (DPPTM)
FEATURES
32-position linear taper potentiometer Non-volatile EEPROM wiper storage Low standby current Single supply operation: 2.5V - 5.5V Increment Up/Down serial interface Resistance values: 10k, 50k and 100k CAT5127 in tiny 8-lead 2mm x 2.5mm TDFN and MSOP packages CAT5129 in the 6-lead TSOT23 package
DESCRIPTION
The CAT5127/CAT5129 are single digitally programmable potentiometers (DPPTM) 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 CAT5127 contains a 32-tap series resistor array connected between two terminals RH and RL. The CAT5129 contains a 32-tap series resistor array connected between two terminals RH and GND. An up/down counter and decoder that are controlled by three input pins, determines which tap is connected to the wiper. The wiper setting, stored in nonvolatile memory, is not lost 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 CAT5127/CAT5129 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 devices are used as two-terminal variable resistors. DPPs bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing.
APPLICATION
Automated product calibration Remote control adjustments Offset, gain and zero control Tamper-proof calibrations Contrast, brightness and volume controls Motor controls and feedback systems Programmable analog functions
For Ordering Information details, see page 12.
FUNCTIONAL DIAGRAM
CAT5127 VCC CAT5129 VCC
RP (U/D)
RH
(U/D) Control and Memory
RH
(INC)
(INC) (CS)
Control and Memory
(CS) POR
POR GND
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
RL
GND
1
Doc. No. MD-2127 Rev. D
CAT5127, CAT5129
PIN CONFIGURATION
MSOP/TDFN
CAT5127 INC U/D RH GND 1 2 3 4 8 VCC 7 CS 6 RL 5 NC
PIN DESCRIPTIONS
Name Function INC U/D RH Increment Control Up/Down Control Potentiometer High Terminal No Connect Potentiometer Low Terminal Chip Select Supply Voltage CAT5127 CAT5129 MSOP/TDFN SOT23 1 2 3 4 5 6 7 8 4 3 5 2 1 6
GND Ground TSOT23-6
CAT5129 CS GND U/D 1 2 3 6 VCC 5 RH 4 INC
NC RL CS VCC
DEVICE DESCRIPTION
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 high-to-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. RL: Low End Potentiometer Terminal (CAT5127 only) 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. RL and RH are electrically interchangeable. CS: Chip Select The chip select input is used to activate the control input of the device 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. CAT5127 has an internal pull-up resistor on the CS input pin. VCC: Supply Input for the device.
Doc. No. MD-2127 Rev. D
2
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT5127, CAT5129
DEVICE OPERATION
The CAT5127 operates like a digitally controlled variable resistor with RH and RL equivalent to the high and low terminals. 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 CAT5129 operates like a digitally controlled variable resistor with RH equivalent to the high terminal. There are 32 available tap positions including the resistor end points, RH and GND. There are 31 resistor elements connected in series between the RH and GND terminals. Operation is 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. The selected wiper position can be stored in nonvolatile memory using the INC and CS inputs. With CS set LOW, the device 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 five-bit counter). The wiper, when at either end 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 device 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 device 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.
OPERATION MODES INC High to Low High to Low High Low X CS Low Low Low to High Low to High High U/D High Low X X X Operation Wiper toward H Wiper toward L/GND Store Wiper Position No Store, Return to Standby Standby
RH CH
CL RL/GND
Variable Resistor Equivalent Circuit
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
3
Doc. No. MD-2127 Rev. D
CAT5127, CAT5129
ABSOLUTE MAXIMUM RATINGS(1) Parameters Supply Voltage VCC to GND Inputs CS to GND INC to GND U/D to GND H to GND L to GND W to GND Ratings -0.5 to +7V -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 Units V V V V V V V Parameters Operating Ambient Temperature Commercial (`C' or Blank suffix) Industrial (`I' suffix) Junction Temperature Storage Temperature Lead Soldering (10 sec max) Ratings 0 to 70 -40 to +85 +150 -65 to 150 +300 Units C C C C C
RELIABILITY CHARACTERISTICS Symbol VZAP(2) ILTH(2) (3) 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 V mA Years Stores
Notes: (1) Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. (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 These parameters are periodically sampled and are not 100% tested.
Doc. No. MD-2127 Rev. D
4
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT5127, CAT5129
DC ELECTRICAL CHARACTERISTICS VCC = +2.5V to +5.5V unless otherwise specified Power Supply Symbol VCC Parameter Operating Voltage Range CAT5127 Supply Current (Increment) ICC1 CAT5129 Supply Current (Increment) ICC2 ISB1(1) Supply Current (Write) Supply Current (Standby) VCC = 5.5V, f = 1MHz, IW = 0 VCC = 3.3V, f = 1MHz, IW = 0 VCC = 5.5V, f = 1MHz, IW = 0 VCC = 3.3V, f = 1MHz, IW = 0 Programming, VCC = 5.5V Programming, VCC = 3.3V CS = VCC - 0.3V U/D, INC = VCC or GND 300 150 0.35 Conditions Min 2.5 Typ Max 5.5 260 150 160 50 600 400 1 Units V A A A A A A A
Logic Inputs Symbol IIH Parameter CAT5127 Input Leakage Current CAT5129 Input Leakage Current IIL VIH2 VIL2 VIH1 VIL1 CAT5127 Input Leakage Current CAT5129 Input Leakage Current CMOS High Level Input Voltage CMOS Low Level Input Voltage CAT5129 TTL High Level Input Voltage CAT5129 TTL Low Level Input Voltage Conditions U/D, INC = VCC CS = VCC-0.3V VIN = VCC U/D, INC = 0 CS = 0 VIN = 0V 2.5V VCC 5.5V VCC x 0.7 -0.3 2 3.6V VCC 5.5V 0 0.8 V Min Typ Max 1 1 1 -1 -120 -1 VCC + 0.3 VCC x 0.2 VCC Units A A A A A A V V V
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
5
Doc. No. MD-2127 Rev. D
CAT5127, CAT5129
POTENTIOMETER CHARACTERISTICS Symbol RPOT RTOL VRH VRL RES INL DNL RWi TCRPOT TCRATIO VN Fc
(3) (3) (3) (3)
Parameter Potentiometer Resistance Pot Resistance Tolerance Voltage on RH pin Voltage on RL pin Resolution Integral Linearity Error Differential Linearity Error Wiper Resistance TC of Pot Resistance Ratiometric TC Noise Potentiometer Capacitances Frequency Response
Conditions -10 Device -50 Device -00 Device
Min
Typ 10 50 100
Max
Units k
20 0 0 3.2 0.5 0.25 VCC = 5V VCC = 2.5V 70 150 30 3 100kHz / 1kHz Passive Attenuator, 10k 8/24 8/8/25 1.7 1 0.5 100 200 300 20 VCC VCC
% V V % LSB LSB ppm/C ppm/C nV/Hz pF MHz
CH/CL/CW
(3)
Notes: (1) Latch-up protection is provided for stresses up to 100mA on address and data pins from -1V to VCC + 1V (2) IW = source or sink (3) These parameters are periodically sampled and are not 100% tested.
Doc. No. MD-2127 Rev. D
6
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT5127, CAT5129
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 tCPH tCPH tIR tCYC tR, tF tPU
(2) (2)
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 RH 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 s ns ms
1 1
5 500 1
s s s ms ms
tWR
2
5
A.C. TIMING
CS tCYC tIL tIH
(store)
tCI INC
tIC
tCPH
90% 10% 90%
tDI U/D
tID
tF
tR
tIR RH
Notes: (1) (2) (3)
MI(3)
Typical values are for TA = 25C and nominal supply voltage. This parameter is periodically sampled and not 100% tested. 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.
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
7
Doc. No. MD-2127 Rev. D
CAT5127, CAT5129
APPLICATION INFORMATION
Potentiometer Configurations
(a) resistive divider
(b) variable resistance
(c) two-port
Applications
V1 (-)
3
+ -
A1
1
R3
R4
+5V
2 8
+5V
RA R1
6
2
+5V
DPP
+5V
9
2 1 7 4
8 R1
R2 R2
10
- +
4
A3
8
1 7 VO 4
11
} }
RB
3
pRPOT (1-p)RPOT
4 7
8 3
CAT5127
R2
6 2
555
5 1 0.01F
CAT5127
V2 (+)
6
- +
A2
7
R3
R4 +2.5V
5
C
0.01F 0.003F
Programmable Instrumentation Amplifier
Programmable Sq. Wave Oscillator (555)
+5V
100k
2 1 7
8
CAT5127
VOUT
V O (REG)
4
2952
VIN (UNREG) SHUTDOWN
1F
R1
11k
FB 1.23V
0.1F
6.8F
6
SD GND
} }
330
+5V 2
pR
(1-p)R
330
1M
+5V
3
+5V
2 1 7 8
3
R2
820
-
7 4
6 A1
2
-
R3
CAT5127
4
6
IS
3+
+ 3
LT1097
+2.5V
76 VO 4 A2
10k
Programmable Voltage Regulator
Programmable I to V convertor
Doc. No. MD-2127 Rev. D
8
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT5127, CAT5129
PACKAGE OUTLINE DRAWINGS
MSOP 8-Lead 3.0 x 3.0mm (Z)
SYMBOL
MIN
NOM
MAX
A A1 A2 b c D
E E1
1.10 0.05 0.75 0.22 0.13 2.90 4.80 2.90 0.40 3.00 4.90 3.00 0.65 BSC 0.60 0.95 REF 0.25 BSC 0 6 0.80 0.10 0.85 0.15 0.95 0.38 0.23 3.10 5.00 3.10
E E1 e L L1 L2
TOP VIEW
D
A
A2
DETAIL A
A1
e SIDE VIEW
b
c END VIEW
L2 L L1 DETAIL A
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC Specification MO-187.
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
9
Doc. No. MD-2127 Rev. D
CAT5127, CAT5129
TDFN 8-Lead 2.5 x 2.0mm
PIN#1 IDENTIFICATION
SYMBOL
MIN
NOM
MAX
A A1 A3 b D D2 E E2 e L
0.70 0.00 0.20 1.90 1.40 2.40 1.20 0.20
0.75 0.02 0.20 REF 0.25 2.00 1.50 2.50 1.30 0.50 TYP 0.30
0.80 0.05 0.30 2.10 1.60 2.60 1.40 0.40
A1
A3
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC specification MO-229.
Doc. No. MD-2127 Rev. D
10
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT5127, CAT5129
TSOT-23 6-Lead (TD)
SYMBOL D e
MIN
NOM
MAX
A A1 A2 b c D
E1 E
1.00 0.01 0.80 0.30 0.12 0.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 TYP 0.30 0.40 0.60 REF 0.25 BSC 0 8 0.50 0.05 0.87 0.10 0.90 0.45 0.20
E E1 e L L1 L2
TOP VIEW
A2 A
b
A1 L1
L
c
L2
SIDE VIEW
END VIEW
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC specification MO-193.
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
11
Doc. No. MD-2127 Rev. D
CAT5127, CAT5129
EXAMPLE OF ORDERING INFORMATION
Prefix CAT Device # 5127 Suffix Z I -10 - G T3
Company ID Product Number 5127 5129
Temperature Range I = Industrial (-40C to 85C) Resistance -10: 10k ohms -50: 50k ohms -00: 100k ohms
Tape & Reel T: Tape & Reel 3: 3000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu
Package Z: MSOP TD: TSOT23 ZD7: TDFN
ORDERING INFORMATION
Device CAT5127 Ordering Part Number CAT5127ZI-10-T3 CAT5127ZI-50-T3 CAT5127ZI-00-T3
(5) (5)
Resistor [k] 10 50 100 10 50 100 10 50 100 10 50 100 10 50 100
Top Marking ABPU ABPV ABPY ABNA ABNB ABNK HB HC HD SWym SXym SYym SJym
(6) (6) (6)
Pin/Package MSOP-8 MSOP-8 MSOP-8 MSOP-8 MSOP-8 MSOP-8 TDFN-8 TDFN-8 TDFN-8 TSOT23-6 TSOT23-6 TSOT23-6 TSOT23-6 TSOT23-6 TSOT23-6
Part Per Reel 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000
CAT5127ZI-10-GT3 CAT5127ZI-50-GT3 CAT5127ZI-00-GT3
(5) (5)
CAT5127ZD7I-10-GT3 CAT5127ZD7I-50-GT3 CAT5127ZD7I-00-GT3 CAT5129 CAT5129TDI-10-T3 CAT5129TDI-50-T3 CAT5129TDI-00-T3
(5) (5) (5) (5)
CAT5129TDI-10-GT3 CAT5129TDI-50-GT3(5) CAT5129TDI-00-GT3
(5)
(6)
SUym(6) SVym
(6)
Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. (3) The device used in the above example is a CAT5127ZI-10-GT3 (MSOP, Industrial Temperature range, 10k, NiPdAu, Tape & Reel). (4) For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. (5) Contact factory for availability. (6) y = Production year (digit), m = Production month (digit).
Doc. No. MD-2127 Rev. D
12
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT5127, CAT5129
REVISION HISTORY
Date 18-Dec-06 23-Feb-07 03-Aug-07 21-Nov-08 Rev. A B C D Description Initial Issue Updated the Functional Diagram Updated the DC Electrical Characteristics table Updated Package Outline Drawing Updated Ordering Information Change logo and fine print to ON Semiconductor
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC 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 SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
(c) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice
13
Doc. No. MD-2127 Rev. D

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