Catalyst CAT5116VI-G Log-taper, 100-tap digitally programmable potentiometer (dppâ ¢) Datasheet

CAT5116
Log-Taper, 100-Tap Digitally Programmable Potentiometer (DPP™)
FEATURES
DESCRIPTION
„ 100-position, log-taper potentiometer
The CAT5116 is a log-taper single digitally programmable potentiometer (DPP™) designed as a electronic replacement for mechanical potentiometers.
„ Non-volatile EEPROM wiper storage
„ 10nA ultra-low standby current
„ Single-supply operation: 2.5V – 5.5V
Ideal for automated adjustments on high volume
production lines, DPP ICs are well suited for applications where equipment requiring periodic adjustment
is either difficult to access or located in a hazardous or
remote environment.
„ Increment Up/Down serial interface
„ Resistance value: 32kΩ
„ Available in 8-pin MSOP, TSSOP, SOIC and DIP
packages
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.
APPLICATIONS
„ Automated product calibration
„ Remote control adjustments
„ Offset, gain and zero control
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.
„ Audio volume control
„ Sensor adjustment
„ Motor controls and feedback systems
„ Programmable analog functions
Wiper-control of the CAT5116 is accomplished with
¯¯ , U/D̄, and INC
¯¯¯ . The INC
¯¯¯
three input control pins, CS
input increments the wiper in the direction which is
¯¯
determined by the logic state of the U/D̄ input. The CS
input is used to select the device and also store the
wiper position prior to power down.
For Ordering Information details, see page 11.
The digitally programmable potentiometer can be used
as a three-terminal resistive divider or as a two-terminal
variable resistor.
FUNCTIONAL DIAGRAM
RH
VCC
RH
U/D
INC
Control
and
Memory
RH
VCC
U/D
INC
CS
165Ω
LOG
TAPER
RTOT = 32kΩ
INTERFACE
&
WIPER
CONTROL
Potentiometer
R = 32kΩ
RW
RW
RW
CS
Power On Recall
GND
EEPROM
RL
11Ω
GND
10.4Ω
RL
General
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Block Diagram
1
RL
Potentiometer Schematic
Doc. No. MD-2118 Rev. K
CAT5116
PIN CONFIGURATION
PDIP 8-Lead (L)
SOIC 8 Lead (V)
MSOP 8 Lead (Z)
PIN DESCRIPTIONS
Name Function
TSSOP 8 Lead (Y)
¯¯¯
INC
1
8
VCC
¯¯
CS
1
8
RL
U/D̄
2
7
¯¯
CS
VCC
2
7
RW
RH
3
6
RL
¯¯¯
INC
3
6
GND
GND
4
5
RWB
U/D̄
4
5
RH
CAT
CAT
¯¯¯
INC
Increment Control
U/D̄
Up/Down Control
RH
Potentiometer High Terminal
GND
Ground
RW
Buffered Wiper Terminal
RL
Potentiometer Low Terminal
¯¯
CS
Chip Select
VCC
Supply Voltage
PIN DESCRIPTION
¯¯ : Chip Select
CS
The chip select input is used to activate the control
input of the CAT5116 and is active low. When in a
¯¯¯ and U/D̄ inputs will not
high state, activity on the INC
affect or change the position of the wiper.
¯¯¯ : Increment Control Input
INC
¯¯¯ input moves the wiper in the up or down
The INC
direction determined by the condition of the U/D̄ input.
U/D̄: Up/Down Control Input
The U/D̄ input controls the direction of the wiper
¯¯ 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.
DEVICE OPERATION
The CAT5116 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 100 tap
positions including the resistor end points, RH and RL.
There are 99 resistor elements connected in series
between the RH and RL terminals. The wiper terminal
is connected to one of the 100 taps and controlled by
¯¯¯, U/D̄ and CS
¯¯ . These inputs control a
three inputs, INC
seven-bit up/down counter whose output is decoded
to select the wiper position. The selected wiper
position can be stored in nonvolatile memory using
¯¯¯ and CS
¯¯ inputs.
the INC
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
¯¯¯, U/D̄ and CS
¯¯ . Voltage applied to
control inputs, INC
the RW terminal cannot exceed the supply voltage,
VCC or go below ground, GND.
¯¯ set LOW the CAT5116 is selected and will
With CS
respond to the U/D̄ and INC inputs. HIGH to LOW
transitions on INC wil increment or decrement the wiper
(depending on the state of the U/D̄ input and seven-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
¯¯ transitions
stored in nonvolatile memory whenever CS
¯¯¯ input is also HIGH. When the
HIGH while the INC
CAT5116 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.
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 below ground, GND. RL and RH are electrically
interchangeable.
¯¯¯ set low, the CAT5116 may be deselected
With INC
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.
Doc. No. MD-2118 Rev. K
2
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5116
RH
OPERATING MODES
¯¯¯
INC
¯¯
CS
U/D̄
Operation
High to Low
Low
High
Wiper toward H
High to Low
Low
Low
Wiper toward L
High
Low to High
X
Store Wiper Position
Low
Low to High
X
No Store, Return to Standby
X
High
X
Standby
CH
RWI
RW
CW
CL
RL
Potentiometer
Equivalent Circuit
ABSOLUTE MAXIMUM RATINGS(1)
Parameters
Supply Voltage
VCC to GND
Inputs
¯¯ to GND
CS
¯¯¯ to GND
INC
U/D̄ to GND
RH to GND
RL to GND
RW 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
Industrial (‘I’ suffix)
Junction Temperature (10s)
Storage Temperature
Lead Soldering (10s max)
Ratings
Units
-40 to +85
ºC
+150
+150
+300
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
DC ELECTRICAL CHARACTERISTICS
VCC = +2.5V to +5.5V unless otherwise specified
Power Supply
Symbol
VCC
ICC1(4)
Parameter
Conditions
Min
Typ
Max
Units
2.5
–
5.5
V
VCC = 5.5V, f = 1MHz, IW = 0
–
–
100
µA
VCC = 5.5V, f = 250kHz, IW = 0
–
–
50
µA
1
mA
500
µA
1
µA
Operating Voltage Range
Supply Current (Increment)
ICC2
Supply Current (Write)
ISB1
Supply Current (Standby)
Programming, VCC = 5.5V
VCC = 3V
¯¯
CS = VCC - 0.3V
¯¯¯ = VCC - 0.3V or GND
U/D̄, INC
–
0.01
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)
This parameter is tested initially and after a design or process change that affects the parameter.
(3)
Latch-up protection is provided for stresses up to 100mA on address and data pins from -1V to VCC + 1V
(4)
IW = source or sink
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-2118 Rev. K
CAT5116
Logic Inputs
Symbol
Parameter
Conditions
IIH
Input Leakage Current
VIN = VCC
–
–
10
µA
IIL
Input Leakage Current
VIN = 0V
–
–
-10
µA
2
–
VCC
V
0
–
0.8
V
VCC x 0.7
–
VCC + 0.3
V
-0.3
–
VCC x 0.2
V
VIH1
TTL High Level Input Voltage
VIL1
TTL Low Level Input Voltage
VIH2
CMOS High Level Input Voltage
VIL2
CMOS Low Level Input Voltage
4.5V ≤ VCC ≤ 5.5V
2.5V ≤ VCC ≤ 5.5V
Min
Typ
Max
Units
Potentiometer Parameters
Symbol
Parameter
RPOT
Potentiometer Resistance
RTOL
Pot. Resistance Tolerance
VRH
Voltage on RH pin
VRL
Voltage on RL pin
RV
(1)
RWI
IW
Wiper Resistance
TCRATIO
Ratiometric TC
fc
Typ
Noise
Units
kΩ
±20
%
0
VCC
V
0
VCC
V
0.05
VCC = 5V, IW = 1mA
200
400
Ω
VCC = 2.5V, IW = 1mA
400
1000
Ω
1
mA
300
ppm/ºC
20
100kHz / 1kHz
Potentiometer Capacitances
Frequency Response
Max
32
Wiper Current
TC of Pot Resistance
CH/CL/CW
Min
Relative Variation
TCRPOT
VN
Conditions
Passive Attenuator, 10kΩ
ppm/ºC
8/24
nV/√Hz
8/8/25
pF
1.7
MHz
Note:
(1) Relative variation is a measure of the error in step size between taps = log (VW(N)) - log(VW(N-1)) = 0.045 ± 0.003.
Doc. No. MD-2118 Rev. K
4
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5116
AC CONDITIONS OF TEST
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
tCPH1
tCPH2
tIW
tCYC
tR, tF
tPU
(2)
(2)
tWR
Parameter
Min
Typ(1)
Max
Units
¯¯ to INC
¯¯¯ Setup
CS
¯¯¯ Setup
U/D̄ to INC
100
–
–
ns
50
–
–
ns
¯¯¯ Hold
U/D̄ to INC
¯¯¯ 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 VOUT Change
INC
¯¯¯ Cycle Time
INC
–
1
5
µs
1
–
–
µs
¯¯¯ Input Rise and Fall Time
INC
–
–
500
µs
Power-up to Wiper Stable
–
–
1
ms
5
10
ms
Store Cycle
A.C. TIMING
CS
tCI
tIL
tCYC
tIC
tIH
(store)
tCPH
90%
INC
90%
10%
tDI
tID
tF
U /D
tIW
tR
MI(3)
RW
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.
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-2118 Rev. K
CAT5116
TYPICAL CHARACTERISTICS
VCC = 5V, TAMB = 25ºC, unless otherwise specified
Wiper-Low/High Resistances vs. Wiper Position
Wiper-Low Resistance vs. Wiper Position (log scale)
100
100. 0
80
Total Resistanc e (% )
Total Resistanc e (%)
90
70
RH - RW
60
RW - RL
50
40
30
20
10. 0
1.0
10
0
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0.1
WIPER POSITION
WIPER POSITION
Wiper Resistance vs. Wiper Voltage
Standby Supply Current vs. Temperature
100
500
STANDBY CURRENT [nA]
WIPE R RESISTANCE [ohm]
600
VCC = 3.0V
Tap 84
400
300
VCC = 4.4V
Tap 84
200
100
0
0
1
Doc. No. MD-2118 Rev. K
2
3
4
W IPER VOLTAGE[V]
5
80
60
VCC = 5V
40
20
VCC = 2.5V
0
-40
6
-15
10
35
60
85
TEMPER ATURE [°C]
6
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5116
PACKAGE OUTLINES
PDIP 8-LEAD (300MIL) (L)
E1
E
D
A2
A
c
A1
L
e
eB
b2
b
SYMBOL
A
A1
A2
b
b2
c
D
E
E1
e
eB
L
MIN
NOM
MAX
4.57
0.38
3.05
0.36
1.14
0.21
9.02
7.62
6.09
0.46
0.26
7.87
6.35
2.54 BSC
3.81
0.56
1.77
0.35
10.16
8.25
7.11
9.65
3.81
7.87
2.92
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.
2. Complies with JEDEC Standard MS001.
3. Dimensioning and tolerancing per ANSI Y14.5M-1982
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. MD-2118 Rev. K
CAT5116
SOIC 8-LEAD NARROW BODY (150MIL) (V)
E1
E
h x 45
D
C
A
Ө1
e
A1
L
b
SYMBOL
MIN
A1
A
b
C
D
E
E1
e
h
L
Ө1
0.10
1.35
0.33
0.19
4.80
5.80
3.80
NOM
MAX
0.25
1.75
0.51
0.25
5.00
6.20
4.00
1.27 BSC
0.25
0.40
0°
0.50
1.27
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 MS-012.
Doc. No. MD-2118 Rev. K
8
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5116
8-LEAD TSSOP (Y)
D
5
8
SEE DETAIL A
c
E
E1
E/2
GAGE PLANE
4
1
PIN #1 IDENT.
0.25
θ1
L
A2
SEATING PLANE
SEE DETAIL A
A
e
A1
b
SYMBOL
A
A1
A2
b
c
D
E
E1
e
L
θ1
MIN
0.05
0.80
0.19
0.09
2.90
6.30
4.30
0.50
0.00
NOM
0.90
3.00
6.4
4.40
0.65 BSC
0.60
MAX
1.20
0.15
1.05
0.30
0.20
3.10
6.50
4.50
0.75
8.00
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.
(2)
Complies with JEDEC Standard MO-153
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-2118 Rev. K
CAT5116
8-LEAD MSOP (Z)
E1
e
e
E
e
D
GAUGE
PLANE
A2
A
c
L2
θ
b
L
A1
L1
SYMBOL
MIN
NOM
MAX
0.05
0.10
0.15
A
A1
1.1
A2
0.75
0.85
0.95
b
0.28
0.33
0.38
D
2.90
3.00
3.10
E
4.80
4.90
5.00
E1
2.90
3.00
3.10
c
e
L
0.65 BSC
0.35
0.45
0.55
L1
L2
Ө
0º
6º
For current Tape and Reel information,
download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1)
(2)
(3)
All dimensions are in millimeters. Angles in degrees.
Complies with JEDEC Specification MS-187.
Stand off height/coplanarity are considered as special characteristics.
Doc. No. MD-2118 Rev. K
10
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT5116
EXAMPLE OF ORDERING INFORMATION
Prefix
CAT
Device #
5116
Suffix
I
– G(4)
Temperature Range
I = Industrial (-40ºC to 85ºC)
Lead Finish
G: NiPdAu
Blank: Matte-Tin
V
Optional
Company ID
Product Number
5116
Package
L: PDIP
V: SOIC
Y: TSSOP
Z: MSOP
T3
Tape & Reel
T: Tape & Reel
3: 3000/Reel
Notes:
(1)
(2)
(3)
(4)
All packages are RoHS compliant (Lead-free, Halogen-free).
Standard lead finish is NiPdAu.
This device used in the above example is a CAT5116VI-GT3 (SOIC, Industrial Temperature, NiPdAu, Tape & Reel).
For Matte-Tin finish, contact factory.
ORDERING PART NUMBER
CAT5116LI-G
CAT5116VI-G
CAT5116YI-G
CAT5116ZI-G
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. MD-2118 Rev. K
REVISION HISTORY
Date
10/9/2003
Rev.
G
Reason
Revised Features
Revised Potentiometer Schematic
Revised DC Electrical Characteristics
Updated Potentiometer Parameters
03/10/2004
H
Updated Potentiometer Parameters
03/29/2004
I
Changed Green Package marking for SOIC from W to V
04/12/2004
J
Eliminated data sheet designation
Updated Reel Ordering Information
06/01/2007
K
Added Package Outline
Updated Example of Ordering Information
Added MD- in front of Document No.
Copyrights, Trademarks and Patents
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
Beyond Memory™, DPP™, EZDim™, MiniPot™, LDD™ and Quad-Mode™
Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products.
CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS
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.
Catalyst Semiconductor, Inc.
Corporate Headquarters
2975 Stender Way
Santa Clara, CA 95054
Phone: 408.542.1000
Fax:
408.542.1200
www.catsemi.com
Document No: MD-2118
Revision:
K
Issue date:
06/01/07
Similar pages