CATALYST CAT5129

CAT5127, CAT5129
32-Tap Digitally Programmable Potentiometer (DPP™)
FEATURES
DESCRIPTION
„ 32-position linear taper potentiometer
The CAT5127/CAT5129 are single digitally programmable
potentiometers (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.
„ Non-volatile EEPROM wiper storage
„ Low standby current
„ Single supply operation: 2.5V – 5.5V
„ Increment Up/Down serial interface
„ Resistance values: 10kΩ, 50kΩ and 100kΩ
„ CAT5127 in tiny 8-lead 2mm x 2.5mm TDFN and
MSOP packages
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
¯¯ , U/D
¯,
accomplished with three input control pins, CS
¯¯¯ . The INC
¯¯¯ input increments the wiper in the
and INC
direction which is determined by the logic state of the
¯ input. The CS
¯¯ input is used to select the device
U/D
and also store the wiper position prior to power down.
„ CAT5129 in the 6-lead TSOT23 package
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.
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.
FUNCTIONAL DIAGRAM
CAT5127
VCC
RP
CAT5129
VCC
(U/D)
(INC)
RH
(U/D)
RH
(INC)
Control
and
Memory
Control
and
Memory
(CS)
POR
(CS)
POR
RL
GND
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
GND
1
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
PIN CONFIGURATION
MSOP/TDFN
CAT5127
¯¯¯
INC
1
8 VCC
¯
U/D
2
¯¯
7 CS
RH
3
6 RL
GND
4
5 NC
PIN DESCRIPTIONS
Name Function
¯¯¯
INC
¯
U/D
RH
CAT5127 CAT5129
MSOP/TDFN SOT23
Increment Control
1
4
Up/Down Control
2
3
Potentiometer High
Terminal
3
5
4
2
GND Ground
TSOT23-6
CAT5129
¯¯
CS
1
6 VCC
GND
2
5 RH
¯
U/D
3
¯¯¯
4 INC
NC
No Connect
5
-
RL
Potentiometer Low
Terminal
6
-
¯¯
CS
Chip Select
7
1
VCC
Supply Voltage
8
6
DEVICE DESCRIPTION
¯¯¯ : Increment Control Input
INC
¯¯¯ input moves the wiper in the up or down
The INC
¯ input.
direction determined by the condition of the U/D
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.
¯ : Up/Down Control Input
U/D
¯ input controls the direction of the wiper
The U/D
¯¯ is low, any
movement. When in a high state and CS
¯¯¯ will cause the wiper to
high-to-low transition on INC
move one increment toward the RH terminal. When in
¯¯ is low, any high-to-low transition
a low state and CS
¯¯¯ will cause the wiper to move one increment
on INC
towards the RL terminal.
¯¯ : Chip Select
CS
The chip select input is used to activate the control
input of the device and is active low. When in a high
¯¯¯ and U/D
¯ inputs will not affect
state, activity on the INC
or change the position of the wiper. CAT5127 has an
¯¯ input pin.
internal pull-up resistor on the CS
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.
Doc. No. MD-2127 Rev. C
VCC: Supply Input for the device.
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
DEVICE OPERATION
¯¯ set LOW, the device is selected and will
With CS
¯ and INC
¯¯¯ inputs. HIGH to LOW
respond to the U/D
¯¯¯ wil increment or decrement the
transitions on INC
¯ input and
wiper (depending on the state of the U/D
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
¯¯¯ input is also HIGH.
transitions HIGH while the INC
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.
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.
¯¯¯, U/D
¯ and
Operation is controlled by three inputs, INC
¯¯ . These inputs control a five-bit up/down counter
CS
whose output is decoded to select the wiper position.
The selected wiper position can be stored in
¯¯¯ and CS
¯¯ inputs.
nonvolatile memory using the INC
¯¯¯ set low, the device may be de-selected and
With INC
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
¯¯
CS
¯
U/D
Operation
High to Low
Low
High
Wiper toward H
High to Low
Low
Low
Wiper toward L/GND
High
Low to High
X
Store Wiper Position
Low
Low to High
X
No Store, Return to Standby
X
High
X
Standby
RH
CH
CL
RL/GND
Variable Resistor Equivalent Circuit
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
ABSOLUTE MAXIMUM RATINGS(1)
Parameters
Supply Voltage
VCC to GND
Inputs
¯¯ to GND
CS
¯¯¯ to GND
INC
¯ to GND
U/D
H to GND
L to GND
W to GND
Ratings
Units
-0.5 to +7V
V
-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
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
Units
0 to 70
-40 to +85
+150
-65 to 150
+300
ºC
ºC
ºC
ºC
ºC
Max
Units
RELIABILITY CHARACTERISTICS
Symbol
Parameter
Test Method
Min
VZAP(2)
ILTH(2) (3)
Typ
ESD Susceptibility
MIL-STD-883, Test Method 3015
2000
V
Latch-Up
JEDEC Standard 17
100
mA
TDR
Data Retention
MIL-STD-883, Test Method 1008
100
Years
NEND
Endurance
MIL-STD-883, Test Method 1003
1,000,000
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. C
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
DC ELECTRICAL CHARACTERISTICS
VCC = +2.5V to +5.5V unless otherwise specified
Power Supply
Symbol
VCC
ICC1
ICC2
ISB1(1)
Parameter
Conditions
Min
Operating Voltage Range
Typ
Units
5.5
V
CAT5127
Supply Current (Increment)
VCC = 5.5V, f = 1MHz, IW = 0
260
µA
VCC = 3.3V, f = 1MHz, IW = 0
150
µA
CAT5129
Supply Current (Increment)
VCC = 5.5V, f = 1MHz, IW = 0
160
µA
VCC = 3.3V, f = 1MHz, IW = 0
50
µA
Supply Current (Write)
Supply Current (Standby)
2.5
Max
Programming, VCC = 5.5V
300
600
µA
Programming, VCC = 3.3V
¯¯ = VCC - 0.3V
CS
¯ , INC
¯¯¯ = VCC or GND
U/D
150
400
µA
0.35
1
µA
Logic Inputs
Symbol
IIH
Parameter
CAT5127 Input Leakage Current
CAT5129 Input Leakage Current
IIL
CAT5127 Input Leakage Current
CAT5129 Input Leakage Current
VIH2
CMOS High Level Input Voltage
VIL2
CMOS Low Level Input Voltage
VIH1
CAT5129 TTL High Level Input
Voltage
VIL1
CAT5129 TTL Low Level Input
Voltage
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Conditions
Min
Max
Units
¯ , INC
¯¯¯ = VCC
U/D
1
µA
¯¯ = VCC-0.3V
CS
1
µA
VIN = VCC
1
µA
¯ , INC
¯¯¯ = 0
U/D
-1
µA
-120
µA
-1
µA
VCC x 0.7
VCC + 0.3
V
-0.3
VCC x 0.2
V
2
VCC
V
0
0.8
V
¯¯ = 0
CS
VIN = 0V
2.5V ≤ VCC ≤ 5.5V
Typ
3.6V ≤ VCC ≤ 5.5V
5
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
POTENTIOMETER CHARACTERISTICS
Symbol
Parameter
Conditions
Min
Typ
-10 Device
10
-50 Device
50
-00 Device
100
Max
Units
RPOT
Potentiometer Resistance
kΩ
RTOL
Pot Resistance Tolerance
VRH
Voltage on RH pin
VRL
Voltage on RL pin
RES
Resolution
3.2
INL
Integral Linearity Error
0.5
1
LSB
DNL
Differential Linearity Error
0.25
0.5
LSB
RWi
Wiper Resistance
VCC = 5V
70
100
Ω
VCC = 2.5V
150
200
Ω
± 20
%
0
VCC
V
0
VCC
V
%
TCRPOT
(3)
TC of Pot Resistance
±30
±300
ppm/ºC
TCRATIO
(3)
Ratiometric TC
±3
20
ppm/ºC
VN
(3)
CH/CL/CW
Fc
(3)
Noise
(3)
100kHz / 1kHz
Potentiometer Capacitances
Frequency Response
Passive Attenuator, 10kΩ
8/24
nV/√Hz
8/8/25
pF
1.7
MHz
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. C
6
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
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
tCPH
tCPH
tIR
tCYC
(2)
tR, tF
tPU
(2)
tWR
Parameter
Min
¯¯ to INC
¯¯¯ Setup
CS
¯ to INC
¯¯¯ Setup
U/D
100
ns
50
ns
¯ to INC
¯¯¯ Hold
U/D
¯¯¯ LOW Period
INC
100
ns
250
ns
¯¯¯ HIGH Period
INC
¯¯¯ Inactive to CS Inactive
INC
250
ns
1
µs
¯¯ Deselect Time (NO STORE)
CS
¯¯ Deselect Time (STORE)
CS
100
ns
10
ms
¯¯¯ to RH Change
INC
¯¯¯ Cycle Time
INC
Typ(1)
Max
1
Units
5
µs
1
µs
¯¯¯ Input Rise and Fall Time
INC
Power-up to Wiper Stable
Store Cycle
2
500
µs
1
ms
5
ms
A.C. TIMING
CS
tCI
tIL
tCYC
(store)
tIC
tIH
tCPH
90%
INC
90%
10%
tDI
tID
tF
U/D
tR
MI(3)
tIR
RH
Notes:
(1)
(2)
(3)
Typical values are for TA = 25ºC 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.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
APPLICATION INFORMATION
Potentiometer Configurations
(a) resistive divider
(b) variable resistance
(c) two-port
Applications
3
V1
(-)
2
+
A1
R3
1
R4
DPP
+5V
8
2
R1
1
8
2
+5V
9
R2
R2
–
+
10
+5V
+5V
–
4
RA R1
1
A3
}
}
7
VO
8
4
11
7
RB
CAT5127
CAT5127
V2
(+)
5
–
R3
A2
4
(1-p)RPOT
8
7
3
555
R4
6
+2.5V
7
+
pRPOT
3
R2
4
6
6
5
2
1
C
0.01µF
0.01µF
0.003µF
Programmable Instrumentation Amplifier
Programmable Sq. Wave Oscillator (555)
+5V
100kΩ
8
2
CAT5127
1
7
V O (REG)
R1
2952
VIN (UNREG)
SHUTDOWN
1µF
SD
GND
FB
11kΩ
1.23V
0.1µF
4
6.8µF
6
2
820
8
3
1
IS
R3
7
4
CAT5127
10k
330
1M
3
–
7
+5V
3 +
4
2
6
A1
–
+
3
7 6
VO
4
A2
LT1097
6
+2.5V
Programmable Voltage Regulator
Doc. No. MD-2127 Rev. C
(1-p)R
+5V
R2
+5V
2
pR
330
}
}
VOUT
Programmable I to V convertor
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
PACKAGE OUTLINE DRAWING
MSOP 8-Lead 3.0 x 3.0mm (Z)
SYMBOL
MIN
NOM
MAX
0.05
0.10
A2
0.75
0.85
b
0.22
c
0.13
D
2.90
3.00
3.10
E
4.80
4.90
5.00
E1
2.90
3.00
3.10
A
A1
E
E1
1.10
0.23
0.65 BSC
0.40
0.60
L1
0.80
0.95 REF
L2
θ
0.95
0.38
e
L
0.15
0.25 BSC
0º
6º
TOP VIEW
D
A
A2
A1
DETAIL A
e
b
c
SIDE VIEW
END VIEW
θ
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.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
TDFN 8-Lead 2.5 x 2.0mm
PIN#1
IDENTIFICATION
SYMBOL
MIN
NOM
MAX
A
0.70
0.75
0.80
A1
0.00
0.02
0.05
A3
0.20 REF
b
0.20
0.25
0.30
D
1.90
2.00
2.10
D2
1.40
1.50
1.60
E
2.40
2.50
2.60
E2
1.20
1.30
1.40
e
L
0.50 TYP
0.20
0.30
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. C
10
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5127, CAT5129
TSOT-23 6-Lead (TD)
SYMBOL
D
MIN
NOM
A
e
1.00
A1
0.01
0.05
0.10
A2
0.80
0.87
0.90
0.15
0.20
b
0.30
c
0.12
D
E1
E
MAX
0.45
2.90 BSC
E
2.80 BSC
E1
1.60 BSC
e
0.95 TYP
L
0.30
0.40
L1
0.60 REF
L2
0.25 BSC
θ
0º
0.50
8º
TOP VIEW
A2 A
b
θ
L
A1
c
L1
SIDE VIEW
L2
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.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. MD-2127 Rev. C
CAT5127, CAT5129
EXAMPLE OF ORDERING INFORMATION
Prefix
Device #
CAT
Suffix
5127
Z
I
-10
–
G
Temperature Range
I = Industrial (-40ºC to 85ºC)
Company ID
Product Number
5127
5129
Tape & Reel
T: Tape & Reel
3: 3000/Reel
Resistance
-10: 10k ohms
-50: 50k ohms
-00: 100k ohms
Package
Z: MSOP
TD: TSOT23
ZD7: TDFN
T3
Lead Finish
Blank: Matte-Tin
G: NiPdAu
ORDERING INFORMATION
Device
Ordering Part Number
Resistor [kΩ]
Top Marking
Pin/Package
Part Per Reel
CAT5127
CAT5127ZI-10-T3
10
ABPU
MSOP-8
3000
CAT5127ZI-50-T3
(5)
50
ABPV
MSOP-8
3000
CAT5127ZI-00-T3
(5)
100
ABPY
MSOP-8
3000
CAT5127ZI-10-GT3
10
ABNA
MSOP-8
3000
CAT5127ZI-50-GT3
(5)
50
ABNB
MSOP-8
3000
CAT5127ZI-00-GT3
(5)
100
ABNK
MSOP-8
3000
CAT5127ZD7I-10-GT3
10
HB
TDFN-8
3000
(5)
50
HC
TDFN-8
3000
(5)
100
HD
CAT5127ZD7I-50-GT3
CAT5127ZD7I-00-GT3
CAT5129
CAT5129TDI-10-T3
CAT5129TDI-50-T3
(5)
CAT5129TDI-00-T3
(5)
CAT5129TDI-10-GT3
CAT5129TDI-50-GT3
(5)
CAT5129TDI-00-GT3(5)
10
TDFN-8
3000
(6)
TSOT23-6
3000
(6)
TSOT23-6
3000
(6)
TSOT23-6
3000
(6)
TSOT23-6
3000
SWym
50
SXym
100
SYym
10
SJym
50
SUym
(6)
TSOT23-6
3000
100
SVym(6)
TSOT23-6
3000
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, 10kΩ, NiPdAu, Tape & Reel).
(4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office.
(5) Contact factory for availability.
(6) y = Production year (digit), m = Production month (digit).
Doc. No. MD-2127 Rev. C
12
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
REVISION HISTORY
Date
12/18/06
Rev.
Reason
A
Initial Issue
02/23/07
B
Updated the Functional Diagram
Updated the DC Electrical Characteristics table
08/03/07
C
Updated Package Outline Drawing
Updated Ordering Information
Copyrights, Trademarks and Patents
© Catalyst Semiconductor, Inc.
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™ and Quad-Mode™
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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.
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Corporate Headquarters
2975 Stender Way
Santa Clara, CA 95054
Phone: 408.542.1000
Fax:
408.542.1200
www.catsemi.com
Document No: MD-2127
Revision:
C
Issue date:
08/03/07