Catalyst CAT5119 32-tap minipotâ ¢ digitally programmable potentiometers with 2-wire interface Datasheet

CAT5110, CAT5118, CAT5119
CAT5123, CAT5124, CAT5125
32-Tap MiniPot™ Digitally Programmable
Potentiometers with 2-Wire Interface
FEATURES
DESCRIPTION
0.3µA Ultra-low standby current
Single-supply operation: 2.7V to 5.5V
Glitchless switching between resistor taps
Power-on reset to midscale
2-wire up/down serial interface
Resistance values: 10kΩ, 50kΩ and 100kΩ
Low wiper resistance: 80Ω for
CAT5123, CAT5124, CAT5125
„ CAT5110, CAT5118, CAT5119 available in SC-70
CAT5110/18/19/23/24/25 linear-taper digitally programmable
potentiometers perform the same function as a
mechanical potentiometer or a variable resistor. These
devices consist of a fixed resistor and a wiper contact
with 32-tap points that are digitally controlled through a
2-wire up/down serial interface.
The CAT5110 and CAT5125 are configured as
potentiometers. The CAT5118/19/23/24 are configured
as variable resistors.
Three resistance values are available: 10kΩ, 50kΩ and
100kΩ. All devices are available in space-saving 5-pin
and 6-pin SOT-23 packages. The CAT5110/18/19 are
also available in the SC-70 package.
„
„
„
„
„
„
„
APPLICATIONS
„
„
„
„
„
LCD screen adjustment
Volume control
Mechanical potentiometer replacement
Gain adjustment
Line impedance matching
FUNCTIONAL DIAGRAM
H
VDD
GND
UP-DOWN
COUNTER
32-POSITION
DECODER
CS
For Ordering Information details, see page 11.
U/D
PIN CONFIGURATION
L
SOT-23
SOT-23
VDD 1
6
GND 2
U/D 3
CAT5110
CAT5125
H
VDD 1
5 W
GND 2
4
CS
U/D 3
SC-70
VDD 1
U/D 3
CAT5110
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
SOT-23
5
H
VDD 1
H
VDD 1
5 W
GND 2
4
CS
U/D 3
6
GND 2
CAT5118
CAT5123
4
CS
U/D 3
SC-70
6
GND 2
W
H
5 L
CAT5119
CAT5124
4
CS
6
H
SC-70
5
H
VDD 1
GND 2
CAT5118
1
4
CS
U/D 3
5 L
CAT5119
4
CS
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
PIN DESCRIPTIONS
Pin Number
CAT5110/
CAT5125
CAT5118/
CAT5123
CAT5119/
CAT5124
Pin
Name
1
1
1
VDD
2
2
2
GND
3
3
3
U/D̄
4
4
4
¯¯
CS
-
-
5
L
¯¯¯¯¯ Control Input. With CS
¯¯ low, a low-to-high transition
Up/Down
increments or decrements the wiper position.
¯¯ transition determines the
Chip Select Input. A high-to-low CS
mode: increment if U/D̄ is high, or decrement if U/D̄ is low.
Low Terminal of Resistor
5
-
-
W
Wiper Terminal of Resistor
6
6
6
H
High Terminal of Resistor
Description
Power Supply
Ground
ABSOLUTE MAXIMUM RATINGS (1)
Parameters
Ratings
Units
VDD to GND
-0.3 to +6
V
-0.3 to (VDD + 0.3)
V
Input and Output Latch-Up Immunity
±200
mA
Maximum Continuous Current into H, L and W
100kΩ
50kΩ
10kΩ
±0.6
±1.3
±1.3
Continuous Power Dissipation (TA = +70ºC)
5-pin SC-70(2)
6-pin SC-70(2)
247
245
mW
-40 to +85
ºC
+150
ºC
-65 to +150
ºC
+300
ºC
All Other Pins to GND
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Soldering Temperature (soldering, 10s)
mA
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) Derate 3.1mW/ºC above TA = +70ºC
Doc. No. MD-2120 Rev. J
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
ELECTRICAL CHARACTERISTICS
VDD = 2.7V to 5.5V, VH = VDD, VL = 0, TA = -40ºC to +85ºC. Typical values are at VDD = 2.7V, TA = 25ºC, unless
otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
DC Performance
Resolution
32
End-to-End Resistance (-00)
80
100
120
End-to-End Resistance (-50)
40
50
60
End-to-End Resistance (-10)
8
10
12
End-to-End Resistance Tempco
TCR
Taps
CAT5110/18/19
200
CAT5123/24/25
30
Ratiometric Resistance Tempco
300
5
Integral Nonlinearity
INL
Differential Nonlinearity
DNL
±0.5
Full-Scale Error
±1
LSB
±1
LSB
LSB
1
Wiper Resistance
RW
ppm/ºC
ppm/ºC
±0.1
Zero-Scale Error
kΩ
CAT5110/18/19
200
600
CAT5123/24/25
80
200
LSB
Ω
Digital Inputs
Input High Voltage
VIH
Input Low Voltage
VIL
0.7 x VDD
V
0.3 x VDD
V
Timing Characteristics (Figures 1, 2)
¯¯ Setup
U/D̄ Mode to CS
tCU
25
ns
¯¯ to U/D̄ Step Setup
CS
tCI
50
ns
¯¯ to U/D̄ Step Hold
CS
tIC
25
ns
U/D̄ Step Low Period
tIL
25
ns
tIH
25
ns
U/D̄ Step High Period
¯¯¯¯¯ Toggle Rate
Up/Down
Output Settling Time
(1)
fTOGGLE
(2)
tSETTLE
1
100kΩ variable resistor
configuration, CL = 10pF
1
100kΩ potentiometer
configuration, CL = 10pF
0.25
MHz
μs
Power Supply
Supply Voltage
Active Supply Current
VDD
(3)
Standby Supply Current
2.7
IDD
(4)
ISB
VDD = +5V
0.3
5.5
V
25
µA
1
µA
Notes:
1
t SETTLE
(1)
Up/Down Toggle Rate: fTOGGLE =
(2)
(3)
(4)
Typical settling times are dependent on end-to-end resistance.
Supply current measured while changing wiper tap, fTOGGLE = 1MHz.
Supply current measured while wiper position is fixed.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
TYPICAL OPERATING CHARACTERISTICS
TA = 25ºC, unless otherwise noted.
END-TO-END RESISTANCE % CHANGE
160
140
120
CAT5110/5118/5119
RW (• )
100
80
60
CAT5123/5124/5125
40
20
0
VDD = 2.7V
0
5
10 15 20 25
WIPER POSTION
30
CHANGE IN END-TO-END RESISTANCE
vs. TEMPERATURE
1.5
1.0
0.5
CAT5123/5124/5125
0.0
-0.5
-1.0
-1.5
-50
CAT5110/5118/5119
120
80
100k
60
50k
40
20
10k
0
0
50
100
TEMPERATURE (ºC)
SUPPLY CURRENT vs.
TEMPERATURE
W-TO-L RESISTANCE vs.
TAP POSITION
100
RESISTANCE (k• )
WIPER RESISTANCE vs.
WIPER POSITION
1 3 5 7 9 1113151719212325272931
TAP POSITION
TAP-TO-TAP
SWITCHING TRANSIENT
0.45
0.40
VDD = 5.5V
U/D
2V/div
CURRENT (µA)
0.35
0.30
VDD = 2.7V
0.25
0.20
WIPER
OUTPUT
100mv/div
0.15
0.10
0.05
0.00
-50
0
50
100
150
200ns/div
TEMPERATURE (ºC)
Doc. No. MD-2120 Rev. J
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
FUNCTIONAL DESCRIPTION
¯¯ and U/D̄ inputs control the position of the
The CS
¯¯ transitions
wiper along the resistor array. When CS
from high to low, the part will go into increment mode
if U/D̄ input is high, and into decrement mode when
U/D̄ input is low. Once the mode is set, the device will
¯¯ goes high again. A lowremain in that mode until CS
to-high transition at the U/D̄ pin will increment or
decrement the wiper position depending on the
current mode (Figures 1 and 2).
The CAT5110/5118/5119/5123/5124/5125 consist of a
fixed resistor and a wiper contact with 32-tap points
that are digitally controlled through a 2-wire up/down
serial interface. Three end-to-end resistance values
are available: 10kΩ, 50kΩ and 100kΩ.
The CAT5110/5125 is designed to operate as a
potentiometer. In this configuration, the low terminal of
the resistor array is connected to ground (pin 2).
¯¯ input transitions to high (serial interface
When the CS
inactive), the value of the counter is stored and the
wiper position is maintained.
The CAT5118/5123 performs as a variable resistor. In
this device, the wiper terminal and high terminal of the
resistor array are connected at pin 5. The
CAT5119/5124 is a similar variable resistor, except
the low terminal is connected to pin 5.
Note that when the wiper reaches the maximum (or
minimum) tap position, the wiper will not wrap around
to the minimum (or maximum) position.
Digital Interface Operation
Power-On Reset
The MiniPots have two modes of operation when the
serial interface is active: increment and decrement
¯¯ is low.
mode. The serial interface is only active when CS
All parts in this family feature power-on reset (POR)
circuitry that sets the wiper position to midscale at
power-up. By default, the chip is in the increment mode.
CS
t CU
t IC
t IL
U/D
t IH
t CI
t SETTLE
t SETTLE
W
Note: "W" is not a digital signal. It represents wiper transitions.
Figure 1. Serial Interface Timing Diagram, Increment Mode
CS
t IC
t CU
t IH
U/D
t IL
t CI
W
t SETTLE
t SETTLE
Note: "W" is not a digital signal. It represents wiper transitions.
Figure 2. Serial Interface Timing Diagram, Decrement Mode
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
APPLICATIONS INFORMATION
The MiniPots are intended for circuits requiring
digitally controlled adjustable resistance, such as LCD
contrast control, where voltage biasing adjusts the
display contrast.
Adjustable Gain
Figure 5 shows how to use either a variable resistor or
a potentiometer to digitally adjust the gain of a
noninverting op amp configuration, by connecting the
Minipot in series with a resistor to ground. The
MiniPots have a low 5ppm/ºC ratiometric tempco that
allows for a very stable adjustable gain configuration
over temperature.
Alternative Positive LCD Bias Control
An op amp can be used to provide buffering and gain
on the output of the CAT5110/CAT5125. This can be
done by connecting the wiper output to the positive
input of a noninverting op amp as shown in Figure 3.
Figure 4 shows a similar circuit for the CAT5119/
CAT5124.
+5V
+5V
H
H
30V
30V
W
VOUT
VOUT
CAT5119/CAT5124 L
CAT5110/CAT5125 L
Figure 3. Positive LCD Bias Control
Figure 4. Positive LCD Bias Control
V CC
VCC
VIN
VIN
VOUT
VOUT
H
W
L
CAT5110/CAT5125
CAT5118/CAT5123 L
Figure 5a. Adjustable Gain Circuit
Doc. No. MD-2120 Rev. J
H
Figure 5b. Adjustable Gain Circuit
6
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
PACKAGE OUTLINE DRAWINGS
SC-70 6-Lead (SD)
(1)(2)
SYMBOL
D
e
e
E1 E
MIN
MAX
A
0.80
1.10
A1
0.00
0.10
A2
0.80
1.00
b
0.15
0.30
c
0.10
0.18
D
1.80
2.00
2.20
E
1.80
2.10
2.40
E1
1.15
1.25
1.35
e
L
0.65 BSC
0.26
L1
0.36
0.46
0.42 REF
L2
TOP VIEW
NOM
0.15 BSC
θ
0°
8°
θ1
4°
10°
θ1
A2 A
θ
b
θ1
L
L1
A1
SIDE VIEW
c
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 standard MS-203.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
SOT-23 6-Lead (TB)
(1)(2)
D
e
E1
E
SYMBOL
MIN
A
0.90
A1
0.00
A2
0.90
1.45
0.15
1.15
1.30
0.30
0.50
c
0.08
0.22
D
2.90 BSC
E
2.80 BSC
E1
1.60 BSC
0.95 BSC
L
0.30
L1
0.45
0.60
0.60 REF
L2
TOP VIEW
MAX
b
e
PIN #1 IDENTIFICATION
NOM
0.25 REF
θ
0º
4º
8º
θ1
5º
10º
15º
θ2
5º
10º
15º
θ1
A2
A
θ
b
θ2
L1
A1
SIDE VIEW
L2
L
c
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 standard MO-178.
Doc. No. MD-2120 Rev. J
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
SC-70 5-Lead (SD)
(1)(2)
SYMBOL
D
e
e
E1 E
MIN
MAX
A
0.80
1.10
A1
0.00
0.10
A2
0.80
1.00
b
0.15
0.30
c
0.10
0.18
D
1.80
2.00
2.20
E
1.80
2.10
2.40
E1
1.15
1.25
1.35
e
L
TOP VIEW
NOM
0.65 BSC
0.26
0.36
L1
0.42 REF
L2
0.15 BSC
0.46
θ
0°
8°
θ1
4°
10°
θ1
A2 A
θ
b
θ1
L
L1
A1
SIDE VIEW
c
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 standard MS-203.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
SOT-23 5-Lead (TB)
(1)(2)
D
SYMBOL
E1
E
e
TOP VIEW
NOM
MAX
A
0.90
1.45
A1
0.00
0.15
A2
0.90
b
0.30
0.50
c
0.08
0.22
1.15
D
2.90 BSC
E
2.80 BSC
E1
1.60 BSC
e
0.95 BSC
L
PIN #1 IDENTIFICATION
MIN
0.30
1.30
0.45
L1
0.60 REF
L2
0.25 REF
0.60
θ
0º
4º
8º
θ1
5º
10º
15º
θ2
5º
10º
15º
θ1
A2
A
θ
b
θ2
L1
A1
SIDE VIEW
L2
L
c
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 standard MO-178.
Doc. No. MD-2120 Rev. J
10
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
EXAMPLE OF ORDERING INFORMATION
Prefix
CAT
Device #
5110
Suffix
SD
Optional
Company ID
(1)
I
-10
–
G
Temperature Range
I = Industrial (-40ºC to 85ºC)
Product Number
5110
5118
5119
5123
5124
5125
Resistance
-10: 10kΩ
-50: 50kΩ
-00: 100kΩ
T3
Tape & Reel
T: Tape & Reel
3: 3,000/Reel
Lead Finish
Blank: Matte-Tin
G: NiPdAu
Package
SD: SC-70
TB: SOT-23
For Product Top Mark Codes, click here:
http://www.catsemi.com/techsupport/producttopmark.asp
Notes:
(1) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The standard finish is NiPdAu.
(3) The device used in the example above is a CAT5110SDI-10 -GT3 (SC-70, Industrial Temperature, 10kΩ, NiPdAu, Tape & Reel, 3,000/Reel).
(4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
ORDERING INFORMATION
Device
Ordering Part Number
Resistor [kΩ]
Pin Package
Parts Per Reel
CAT5110
CAT5110SDI-10-GT3
10
SC70-6
3,000
CAT5110TBI-10-T3
10
SOT23-6
3,000
CAT5110TBI-10-GT3
10
SOT23-6
3,000
CAT5110SDI-50-GT3
50
SC70-6
3,000
CAT5110TBI-50-T3
50
SOT23-6
3,000
CAT5110TBI-50-GT3
50
SOT23-6
3,000
CAT5110SDI-00-GT3
100
SC70-6
3,000
CAT5110TBI-00-T3
100
SOT23-6
3,000
CAT5110TBI-00-GT3
100
SOT23-6
3,000
CAT5118SDI-10-GT3
10
SC70-5
3,000
CAT5118TBI-10-T3
10
SOT23-5
3,000
CAT5118TBI-10-GT3
10
SOT23-5
3,000
CAT5118SDI-50-GT3
50
SC70-5
3,000
CAT5118TBI-50-T3
50
SOT23-5
3,000
CAT5118TBI-50-GT3
50
SOT23-5
3,000
CAT5118SDI-00-GT3
100
SC70-5
3,000
CAT5118TBI-00-T3
100
SOT23-5
3,000
CAT5118TBI-00-GT3
100
SOT23-5
3,000
CAT5119SDI-10-GT3
10
SC70-6
3,000
CAT5119TBI-10-T3
10
SOT23-6
3,000
CAT5119TBI-10-GT3
10
SOT23-6
3,000
CAT5119SDI-50-GT3
50
SC70-6
3,000
CAT5119TBI-50-T3
50
SOT23-6
3,000
CAT5119TBI-50-GT3
50
SOT23-6
3,000
CAT5119SDI-00-GT3
100
SC70-6
3,000
CAT5119TBI-00-T3
100
SOT23-6
3,000
CAT5119TBI-00-GT3
100
SOT23-6
3,000
CAT5118
CAT5119
Doc. No. MD-2120 Rev. J
12
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Device
Ordering Part number
Resistor [kΩ]
Pin Package
Parts Per Reel
CAT5123
CAT5123TBI-10-T3
10
SOT23-5
3,000
CAT5123TBI-10-GT3
10
SOT23-5
3,000
(1)
50
SOT23-5
3,000
50
SOT23-5
3,000
100
SOT23-5
3,000
100
SOT23-5
3,000
10
SOT23-6
3,000
10
SOT23-6
3,000
CAT5124TBI-50-T3
50
SOT23-6
3,000
CAT5124TBI-50-GT3
50
SOT23-6
3,000
100
SOT23-6
3,000
100
SOT23-6
3,000
CAT5125TBI-10-T3
10
SOT23-6
3,000
CAT5125TBI-10-GT3
10
SOT23-6
3,000
(1)
50
SOT23-6
3,000
50
SOT23-6
3,000
100
SOT23-6
3,000
100
SOT23-6
3,000
CAT5123TBI-50-T3
CAT5123TBI-50-GT3
CAT5123TBI-00-T3
(1)
CAT5123TBI-00-GT3
CAT5124
CAT5124TBI-10-T3
CAT5125TBI-50-T3
CAT5125TBI-50-GT3
CAT5125TBI-00-T3
(1)
(1)
CAT5124TBI-00-GT3
CAT5125
(1)
(1)
CAT5124TBI-10-GT3
CAT5124TBI-00-T3
(1)
(1)
(1)
(1)
CAT5125TBI-00-GT3
(1)
Notes:
(1) Contact factory for availability.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
13
Doc. No. MD-2120 Rev. J
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
REVISION HISTORY
Date
Rev.
03/10/2004
A
Initial Issue
03/18/2004
B
Update Typical Operating Characteristics
Update SC70 package outline
07/19/2004
C
Added SOT-23 package in all areas
Update Description
Update Electrical Characteristics
Update Typical Operating Characteristics
Update Functional Description
12/15/2006
D
Added CAT5123, CAT5124, CAT5125
Update Features
Update Description
Update Pin Configuration
Update Pin Description
Update Electrical Characteristics
Update Typical Operating Characteristics
Update Functional Description
Update Figures 3, 4, 5 and 6
Update Package Information
Update Example of Ordering Information
Update Ordering information
01/29/2007
E
Update Electrical Characteristics
08/03/2007
F
Update Package Outline Drawings
Update Example of Ordering Information
Update Ordering Information “Top Marking“
11/02/2007
G
Update Electrical Characteristics
Update Package Outline Drawings
01/29/2008
H
Update Ordering Information
03/12/2008
I
Add Top Mark Code link
29-May-08
J
Delete 10,000 per reel option
Update Document Layout
Doc. No. MD-2120 Rev. J
Reason
14
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
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Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
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Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled
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Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical
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Document No: MD-2120
Revision:
J
Issue date:
05/29/08
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