Catalyst CAT5133 16 volt digitally programmable potentiometer (dpp tm) with 128 taps and an increment decrement interface Datasheet

CAT5133
16 Volt Digitally Programmable Potentiometer (DPPTM)
with 128 Taps and an Increment Decrement Interface
FEATURES
DESCRIPTION
„ Single linear DPP with 128 taps
The CAT5133 is a high voltage Digital Programmable
Potentiometer (DPP) integrated with E2PROM
memory and control logic to operate in a similar
manor to a mechanical potentiometer. The DPP
consists of a series of resistive elements connected
between two externally accessible end points. The tap
points between each resistive element are connected
to the wiper outputs with CMOS switches. A 7-bit
wiper control register (WCR) independently controls
the wiper tap switches for the DPP. Associated with
the control register is a 7-bit nonvolatile memory data
register (DR) used for storing the wiper settings.
Changing the value of the wiper control register or
storing that value into the nonvolatile memory is
performed via a 3-input Increment-Decrement interface.
„ End-to-end resistance of 10kΩ, 50kΩ or 100kΩ
„ 2-wire (I2C-like) interface
„ Fast Up/Down wiper control mode
„ Non-volatile wiper setting storage
„ Automatic wiper setting recall at power-up
„ Digital Supply range (VCC): 2.7V to 5.5V
„ Analog Supply range (V+): +8V to +16V
„ Low Standby Current: 15μA
„ 100 Year wiper setting memory
„ Industrial Temperature range: -40ºC to +85ºC
„ RoHS-compliant 10-pin MSOP package
The CAT5133 comes with 2 voltage supply inputs: VCC
(digital supply voltage) input and V+ (analog bias
supply) input. Providing separate Digital and Analog
inputs allow the potentiometer terminals to be as much
as 10 volts above VCC and 16 volts above ground.
APPLICATION
„ LCD screen Adjustment
„ Volume Control
„ Mechanical potentiometer replacement
The CAT5133 can be used as a potentiometer or as a
two terminal, variable resistor. It is designed for circuit
level or system level adjustments in a wide variety of
applications.
„ Gain adjustment
„ Line impedance matching
„ VCOM settings adjustment
On power-up, the contents of the nonvolatile data
register (DR) are transferred to the wiper control
register (WCR) and the wiper is positioned to that
location. The CAT5133 is shipped with the DR
programmed to position 64.
For Ordering Information details, see page 9.
BLOCK DIAGRAM
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 2125 Rev. B
CAT5133
PIN CONFIGURATION
PIN DESCRIPTIONS
USOP Package (GZ)
Pin
Name
Function
1
U/D̄
Up/Down Data Input – Determines the direction of
movement of the wiper
2
3
4
5
6
7
8
9
GND
VCC
¯¯¯
CS
N/C
RH
RW
RL
V+
Ground
Logic Supply Voltage (2.7V to 5.5V)
Chip Select – The chip is selected when the input is low.
No Connect
High Reference Terminal for the Potentiometer
Wiper Terminal for the Potentiometer
Low Reference Terminal for the Potentiometer
Analog Bias Voltage Input (+8.0V to +16.0V)
10
¯¯¯
INC
Increment Input – Moves the wiper in the direction
determined by the Up/Down input on each negative edge
DEVICE OPERATION
wiper (depending on the state of the U/D̄ input and
7-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
CAT5133 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 CAT5133 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 128 available tap
positions including the resistor end points, RH and RL.
There are 127 resistor elements connected in series
between the RH and RL terminals. The wiper terminal is
connected to one of the 128 taps and controlled by
three inputs, INC
¯¯¯, U/D̄ and ¯¯¯.
CS These inputs control a
7-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 INC
¯¯¯ set low, the CAT5133 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.
With ¯¯¯
CS set LOW the CAT5133 is selected and will
respond to the U/D̄ and INC
¯¯¯ inputs. HIGH to LOW
transitions on INC
¯¯¯ will increment or decrement the
OPERATION MODES
¯¯¯
INC
High to Low
High to Low
High
Low
X
Doc. No. 2125 Rev. B
¯¯¯
CS
Low
Low
Low to High
Low to High
High
U/D̄
High
Low
X
X
X
Operation
Wiper toward H
Wiper toward L
Store Wiper Position
No Store, Return to Standby
Standby
2
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5133
POWER-ON AND POTENTIOMETER CHARACTERISTICS
The CAT5133 is a 128-position, digital controlled
potentiometer. When applying power to the CAT5133,
VCC must be supplied prior to or simultaneously with
V+. At the same time, the signals on RH, RW and RL
terminals should not exceed V+. If V+ is applied before
VCC, the electronic switches of the DPP are powered in
the absence of the switch control signals, that could
result in multiple switches being turned on. This
causes unexpected wiper settings and possible current
overload of the potentiometer.
The end-to-end nominal resistance of the potentiometer has 128 contact points linearly distributed
across the total resistor. Each of these contact points
is addressed by the 7 bit wiper register which is
decoded to select one of these 128 contact points.
Each contact point generates a linear resistive value
between the 0 position and the 127 position. These
values can be determined by dividing the end-to-end
value of the potentiometer by 127. The 10kΩ
potentiometer has a resistance of ~79Ω between each
wiper position. However in addition to the ~79Ω for
each resistive segment of the potentiometer, a wiper
resistance offset must be considered. Table 8 shows
the effect of this value and how it would appear on the
wiper terminal.
When VCC is applied, the device turns on at the midpoint wiper location (64) until the wiper register can be
loaded with the nonvolatile memory location
previously stored in the device. After the nonvolatile
memory data is loaded into the wiper register the
wiper location will change to the previously stored
wiper position.
This offset will appear in each of the CAT5133 end-toend resistance values in the same way as the 10kΩ
example. However resistance between each wiper
position for the 50kΩ version will be ~395Ω and for
the100kΩ version will be ~790Ω.
At power-down, it is recommended to turn-off first the
signals on RH, RW and RL, followed by V+ and, after
that, VCC, in order to avoid unexpected transitions of
the wiper and uncontrolled current overload of the
potentiometer.
Potentiometer Resistance and Wiper Resistance Offset Effects
Position
0
01
63
127
Typical RW to RL Resistance
for 10kΩ DPP
70Ω or
149Ω or
5,047Ω or
10,070Ω or
Position
0Ω + 70Ω
79Ω + 70Ω
4,977Ω + 70Ω
10,000Ω + 70Ω
00
64
126
127
Typical RW to RH Resistance
for 10kΩ DPP
10,070Ω or
5,047Ω or
149Ω or
70Ω or
10,000Ω + 70Ω
4,977Ω + 70Ω
79Ω + 70Ω
0Ω + 70Ω
ABSOLUTE MAXIMUM RATINGS(1)
Parameters
Temperature Under Bias
Storage Temperature
Voltage on any U/D̄, INC
¯¯¯,& ¯¯¯
CS Pins with Respect to VCC(2)
Voltage on RH, RL, & RW Pins with Respect to VCC
VCC with Respect to Ground
V+ with respect to Ground
Wiper Current
Lead Soldering temperature (10 seconds)
Ratings
-55 to +125
-65 to +150
-0.3 to +VCC+0.3
V+
-0.3 to +6.0
-0.3 to +16.5
±6
+300
Units
°C
°C
V
V
V
V
mA
°C
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)
Latch-up protection is provided for stresses up to 100mA on the digital from -0.3V to VCC +0.3V.
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. 2125 Rev. B
CAT5133
RECOMMENDED OPERATING CONDITIONS
VCC
= +2.7V to +5.5V
V+
= +8.0V to +16.0V
Operating Temperature Range: -40°C to +85°C
POTENTIOMETER CHARACTERISTICS
(Over recommended operating conditions unless otherwise stated.)
Symbol
RPOT
RPOT
RPOT
RTOL
IW
RW
VTERM
RES
ALIN
RLIN
TCRPOT
TCRatio
CH/CL/C
fc
Parameter
Test Conditions
Potentiometer Resistance (10kΩ)
Potentiometer Resistance (50kΩ)(7)
Potentiometer Resistance (100kΩ)(7)
Min
Limits
Typ
10
50
100
Potentiometer Resistance Tolerance
Power Rating
Wiper Current
Wiper Resistance
Voltage on RW , RH or RL
25ºC
IW = +1mA @ V+ = 12V
IW = +1mA @ V+ = 8V
GND = 0V; V+ = 8V to 16V
Resolution
Absolute Linearity(2)
VW(n)(actual) - VW(n)(expected)(5), (6)
(3)
Relative Linearity
VW(n+1) - [VW(n) +LSB](5), (6)
(1)
Temperature Coefficient of RPOT
Ratiometric Temperature Coefficient (1)
(1)
Potentiometer Capacitances
Frequency Response
RPOT = 50kΩ
70
110
GND
Max
Units
kΩ
kΩ
kΩ
±20
%
50
±3
150
200
V+
mW
mA
Ω
Ω
V
0.78
±1
±0.5
±300
30
10/10/25
0.4
%
LSB(4)
LSB(4)
ppm/°C
ppm/°C
pF
MHz
Notes:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
This parameter is tested initially and after a design or process change that affects the parameter.
Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a
potentiometer.
LSB = (RHM - RLM)/127; where RHM and RLM are the highest and lowest measured values on the wiper terminal.
n = 1, 2, ..., 127.
+
V @ RH; 0V @ RL; VW measured @ RW, with no load.
Contact factory for availability on this version of the CAT5133.
Doc. No. 2125 Rev. B
4
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5133
DC ELECTRICAL CHARACTERISTICS
VCC = +2.7V to +6.0V, unless otherwise specified.
Symbol
ICC1
ICC2
ISB(VCC)
ISB(V+)
ILI
ILO
VIL
VIH
VOL1
Parameter
Power Supply Current
Power supply Current
Nonvolatile WRITE
Standby Current (VCC = 5V)
V+ Standby Current
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage (VCC = 3.0V)
Test Conditions
VCC = 5.5V, fINC = 1MHz, Input = GND
VCC = 5.5V, fINC = 1MHz, Input = GND
VIN = GND or VCC, INC = VCC
VCC = 5V, V+ = 16V
VIN = GND to VCC
VOUT = GND to VCC
IOL = 3 mA
Min
Max
1
3.0
5
10
10
10
-1
VCC x 0.3
VCC x 0.7 VCC + 1.0
0.4
Units
mA
mA
µA
µA
µA
µA
V
V
V
CAPACITANCE
TA = 25ºC, f = 1.0MHz, VCC = 5.0V
Symbol
CI/O
CIN
Parameter
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, SCL)
Test Conditions
VI/O = 0V(1)
VIN = 0V(1)
Min
Max
8
6
Units
pF
pF
Min
Max
1
1
Units
ms
ms
Min
5
5
Max
10
10
Units
μs
μs
Min
Max
5
Units
ms
POWER UP TIMING(1)(2)
Symbol
tPUR
tPUW
Parameter
Power-up to Read Operation
Power-up to Write Operation
XDCP TIMING
Symbol
tWRPO
tWRL
Parameter
Wiper Response Time After Power Supply Stable
Wiper Response Time After Instruction Issued
WRITE CYCLE LIMITS
Symbol
tWR
Parameter
Write Cycle Time
Notes:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated.
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. 2125 Rev. B
CAT5133
RELIABILITY CHARACTERISTICS
(Over recommended operating conditions unless otherwise stated.)
Symbol
NEND(1)
TDR(1)
Parameter
Endurance
Data Retention
Reference Test Method
MIL-STD-883, Test Method 1033
MIL-STD-883, Test Method 1008
Min
100,000
100
Max
Units
Cycles/Byte
Years
Typ(1)
Max
1
5
5
500
1
10
Units
ns
ns
ns
ns
ns
μs
ns
ms
μs
μs
μs
ms
ms
Notes:
(1)
This parameter is tested initially and after a design or process change that affects the parameter.
A.C. OPERATIONG CHARACTERISTICS
VCC = +2.5V to +6.0V, VH = VCC, VL = 0V, unless otherwise specified.
Symbol
tCI
tDI
tID
tIL
tIH
tIC
tCPH
tCPH
tIW
tCYC
tR, tF(2)
tPU(2)
tWR
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
1
A.C. TIMING
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.
Doc. No. 2125 Rev. B
6
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5133
TYPICAL PERFORMANCE CHARACTERISTICS
Resistance betw een R W and R L
12.000
ICC2 (NV write) vs Temperature
ICC2 (NV write) vs Temperature
400
Vcc= 2.7V; V+=8v
Vcc=5.5V; V+=16V
10.000
350
300
ICC2 (μA)
RWL (Kohm)
8.000
6.000
4.000
250
200
150
Vcc = 2.7V
100
2.000
Vcc = 5.5V
50
0
0.000
0
16
32
48
64
80
96
112
-50
128
-30
-10
10
1.000
Tam b = 25 C
Rtotal = 10K
90
110 130
Vcc=2.7V; V+=8V
Tam b = 25ºC
Rtotal = 10K
0.400
Vcc=5.5V; V+=16V
Vcc=5.5V; V+=16V
0.300
0.400
0.200
R LIN Error (LSB)
ALIN Error (LSB)
70
0.500
Vcc=2.7V; V+=8v
0.600
50
Relative Line arity Error
Absolute Line arity Error per Tap Position
0.800
30
Temperature (ºC)
Tap position
0.200
0.000
-0.200
-0.400
0.100
0.000
-0.100
-0.200
-0.600
-0.300
-0.800
-0.400
-1.000
-0.500
0
16
32
48
64
80
96
112
0
128
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
16
32
48
64
80
96
112
128
Tap position
Tap position
7
Doc. No. 2125 Rev. B
CAT5133
PACKAGE OUTLINES
10-LEAD MSOP
E1
E
e
D
A2
b
SYMBOL
MIN
L
A1
NOM
MAX
1.10
A
A1
0.00
0.05
0.15
A2
0.75
0.85
0.95
b
0.17
D
2.90
3.00
3.10
E
4.75
4.90
5.05
E1
2.90
3.00
3.10
0.27
0.50 BSC
e
L
GAUGE
PLANE
A
0.40
0.8
0°
8°
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.
3. Stand off height/coplanarity are considered as special characteristics.
Doc. No. 2125 Rev. B
8
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5133
EXAMPLE OF ORDERING INFORMATION
Prefix
CAT
Device #
Suffix
5133
Z
I
-10
Temperature Range
I = Industrial (-40ºC to 85ºC)
Company ID
Product Number
5133
Package
Z: MSOP
Resistance
-10: 10k ohms
-50: 50k ohms(4)
-00: 100k ohms(4)
–G
T3
T: Tape & Reel
3: 3000/Reel
Lead Finish
G: NiPdAu
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 CAT5133ZI-10-GT3 (MSOP, Industrial Temperature range, 10k ohms, NiPdAu, Tape & Reel).
(4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office.
ORDERING
PART
NUMBER
CAT5133ZI-10-GT3
CAT5133ZI-50-GT3(4)
CAT5133ZI-00-GT3(4)
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. 2125 Rev. B
REVISION HISTORY
Date
04/28/06
11/03/06
Rev.
A
B
Reason
Initial Issue
Update Ordering Information
Copyrights, Trademarks and Patents
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
AE2 ™
TM
Beyond Memory
DPP ™
MiniPot
TM
M
Quad-ModeT
Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products.
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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.
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Corporate Headquarters
2975 Stender Way
Santa Clara, CA 95054
Phone: 408.542.1000
Fax:
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Document No: 2125
Revision:
B
Issue date:
11/03/06
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