CAT5122TPI-10-T10 [CATALYST]
16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface; 16抽头MiniPot数字可编程，带有2线接口电位器
| 型号： | CAT5122TPI-10-T10 |
| 厂家： | 
CATALYST SEMICONDUCTOR |
| 描述： | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| 文件： | 总11页 (文件大小：165K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
E
CAT5120, CAT5121, CAT5122
16-Tap MiniPot™ Digitally Programmable Potentiometers
with 2-Wire Interface
TM
FEATURES
■ 0.3µA Ultra-low supply current
■ 2-Wire up/down serial interface
■ Single-supply operation: 2.7 V to 5.5 V
■ Glitchless switching between resistor taps
■ Power-on reset to midscale
■ Resistance values: 10kΩ, 50kΩ and 100kΩ
■ Available in SC70 and SOT-23 packages
APPLICATIONS
■ LCD screen adjustment
■ Volume control
■ Gain adjustment
■ Line impedance matching
■ Mechanical potentiometer replacement
DESCRIPTION
CAT5120/5121/5122linear-taperdigitallyprogrammable
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 CAT5120 is configured as a potentiometer. The
CAT5121 and CAT5122 are configured as variable
resistors. See Pin Configurations for part functionality.
Three resistance values are available: 10kΩ , 50kΩ and
100kΩ. These are available in space-saving 5-pin and
6-pin SC70 and SOT-23 packages.
PIN CONFIGURE
FUNCTIONAL DIAGRAM
H
V
1
2
3
6
5
4
H
V
1
2
3
5
4
H
DD
DD
V
DD
GND
GND
U/D
W
CS
GND
U/D
CAT5120
CAT5122
CS
CS
UP/DN
Counter
16-Position
Decoder
W
U/D
L
V
1
2
3
6
5
4
H
DD
GND
U/D
L
CAT5121
CS
Top View
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 2121, Rev. A
CAT5120/5121/5122
PIN DESCRIPTION
Pin Number
Pin Name
Pin Function
CAT5120
CAT5121
CAT5122
1
2
1
2
1
2
VDD
Power Supply
Ground
GND
Up/Down Control Input. With CS low, a
low-to-high transition increments or
decrements the wiper position.
3
4
3
4
3
4
U/D
Chip Select Input. A high-to-low CS
transition determines the mode: increment
if U/D is high, or decrement if U/D is low.
CS
-
5
-
-
-
L
W
H
Low Terminal of Resistor
Wiper Terminal of Resistor
High Terminal of Resistor
5
6
6
5
Doc. No. 2121, Rev. A
2
CAT5120/5121/5122
ORDERING INFORMATION
Ordering Part Number
CAT5120SBI-10-T
CAT5120SBI-10-T10
CAT5120TPI-10-T
CAT5120TPI-10-T10
CAT5120SBI-50-T
CAT5120SBI-50-T10
CAT5120TPI-50-T
CAT5120TPI-50-T10
CAT5120SBI-00-T
CAT5120SBI-00-T10
CAT5120TPI-00-T
CAT5120TPI-00-T10
CAT5121SBI-10-T
CAT5121SBI-10-T10
CAT5121TPI-10-T
CAT5121TPI-10-T10
CAT5121SBI-50-T
CAT5121SBI-50-T10
CAT5121TPI-50-T
CAT5121TPI-50-T10
CAT5121SBI-00-T
CAT5121SBI-00-T10
CAT5121TPI-00-T
CAT5121TPI-00-T10
CAT5122SBI-10-T
CAT5122SBI-10-T10
CAT5122TPI-10-T
CAT5122TPI-10-T10
CAT5122SBI-50-T
CAT5122SBI-50-T10
CAT5122TPI-50-T
CAT5122TPI-50-T10
CAT5122SBI-00-T
CAT5122SBI-00-T10
CAT5122TPI-00-T
CAT5122TPI-00-T10
Resistor K
Top Mark
JE_
Pin Package
6 Lead SC70
6 Lead SC70
6 Lead SOT-23
6 Lead SOT-23
6 Lead SC70
6 Lead SC70
6 Lead SOT-23
6 Lead SOT-23
6 Lead SC70
6 Lead SC70
6 Lead SOT-23
6 Lead SOT-23
6 Lead SC70
6 Lead SC70
6 Lead SOT-23
6 Lead SOT-23
6 Lead SC70
6 Lead SC70
6 Lead SOT-23
6 Lead SOT-23
6 Lead SC70
6 Lead SC70
6 Lead SOT-23
6 Lead SOT-23
5 Lead SC70
5 Lead SC70
5 Lead SOT-23
5 Lead SOT-23
5 Lead SC70
5 Lead SC70
5 Lead SOT-23
5 Lead SOT-23
5 Lead SC70
5 Lead SC70
5 Lead SOT-23
5 Lead SOT-23
Parts Per Reel
3k
10
10
JE_
10k
3k
10
JEYM
JEYM
JF_
10
10k
3k
50
50
JF_
10k
3k
50
JFYM
JFYM
JGYM
JG_
50
10k
3k
100
100
100
100
10
10k
3k
JGYM
JGYM
JH_
10k
3k
10
JH_
10k
3k
10
JHYM
JHYM
JJ_
10
10k
3k
50
50
JJ_
10k
3k
50
JJYM
JJYM
JK_
50
10k
3k
100
100
100
100
10
JK_
10k
3k
JKYM
JKYM
JB_
10k
3k
10
JB_
10k
3k
10
JBYM
JBYM
JC_
10
10k
3k
50
50
JC_
10k
3k
50
JCYM
JCYM
JD_
50
10k
3k
100
100
100
100
JD_
10k
3k
JDYM
JDYM
10k
Doc. No. 2121, Rev. A
3
CAT5120/5121/5122
ORDERING INFORMATION (CON’T)
Ordering Part Number
Resistor K
Top Mark
Pin Package
Parts Per Reel
CAT5120SDI-10-T
CAT5120SDI-10-T10
CAT5120TBI-10-T
CAT5120TBI-10-T10
CAT5120SDI-50-T
CAT5120SDI-50-T10
CAT5120TBI-50-T
CAT5120TBI-50-T10
CAT5120SDI-00-T
CAT5120SDI-00-T10
CAT5120TBI-00-T
CAT5120TBI-00-T10
CAT5121SDI-10-T
CAT5121SDI-10-T10
CAT5121TBI-10-T
CAT5121TBI-10-T10
CAT5121SDI-50-T
CAT5121SDI-50-T10
CAT5121TBI-50-T
CAT5121TBI-50-T10
CAT5121SDI-00-T
CAT5121SDI-00-T10
CAT5121TBI-00-T
CAT5121TBI-00-T10
CAT5122SDI-10-T
CAT5122SDI-10-T10
CAT5122TBI-10-T
CAT5122TBI-10-T10
CAT5122SDI-50-T
CAT5122SDI-50-T10
CAT5122TBI-50-T
CAT5122TBI-50-T10
CAT5122SDI-00-T
CAT5122SDI-00-T10
CAT5122TBI-00-T
CAT5122TBI-00-T10
10
10
KC_
KC_
6 Lead SC70 green
6 Lead SC70 green
6 Lead SOT-23 green
6 Lead SOT-23 green
6 Lead SC70 green
6 Lead SC70 green
6 Lead SOT-23 green
6 Lead SOT-23 green
6 Lead SC70 green
6 Lead SC70 green
6 Lead SOT-23 green
6 Lead SOT-23 green
6 Lead SC70 green
6 Lead SC70 green
6 Lead SOT-23 green
6 Lead SOT-23 green
6 Lead SC70 green
6 Lead SC70 green
6 Lead SOT-23 green
6 Lead SOT-23 green
6 Lead SC70 green
6 Lead SC70 green
6 Lead SOT-23 green
6 Lead SOT-23 green
5 Lead SC70 green
5 Lead SC70 green
5 Lead SOT-23 green
5 Lead SOT-23 green
5 Lead SC70 green
5 Lead SC70 green
5 Lead SOT-23 green
5 Lead SOT-23 green
5 Lead SC70 green
5 Lead SC70 green
5 Lead SOT-23 green
5 Lead SOT-23 green
3k
10k
3k
10
KCYM
KCYM
KD_
10
10k
3k
50
50
KD_
10k
3k
50
KDYM
KDYM
KE_
50
10k
3k
100
100
100
100
10
KE_
10k
3k
KEYM
KEYM
KF_
10k
3k
10
KF_
10k
3k
10
KFYM
KFYM
KG_
10
10k
3k
50
50
KG_
10k
3k
50
KGYM
KGYM
KH_
50
10k
3k
100
100
100
100
10
KH_
10k
3k
KHYM
KHYM
KY_
10k
3k
10
KY_
10k
3k
10
KYYM
KYYM
KA_
10
10k
3k
50
50
KA_
10k
3k
50
KAYM
KAYM
KB_
50
10k
3k
100
100
100
100
KB_
10k
3k
KBYM
KBYM
10k
Doc. No. 2121, Rev. A
4
CAT5120/5121/5122
ABSOLUTE MAXIMUM RATINGS
Operating Temperature Range........... -40°C to +85˚C
Junction Temperature ......................................+150˚C
Storage Temperature Range ............ -65˚C to +150˚C
Soldering Temperature (soldering, 10s) ..........+300˚C
VDD to GND........................................... -0.3 V to +6 V
All Other Pins to GND ..............-0.3 V to (VDD + 0.3) V
Input and Output Latch-Up Immunity............ +200 mA
Maximum Continuous Current into H, L and W
*(derate 3.1mW/˚C above T = +70˚C)
A
100kΩ ................................................................... +0.6 mA
50kΩ...................................................................... +1.3 mA
10kΩ...................................................................... +1.3 mA
COMMENT
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
outsideofthoselistedintheoperationalsectionsofthisspecificationisnot
implied. Exposure to any absolute maximum rating for extended periods
may affect device performance and reliability.
Continuous Power Dissipation (TA = +70˚C)
5-pin SC70*.................................................... 247 mW
6-pin SC70*.................................................... 245 mW
ELECTRICAL CHARACTERISTICS
(VDD = 2.7 V to 5.5 V, VH = VDD, VL = 0, TA = -40˚C to 85˚C. Typical values are at VDD = 2.7 V, TA = 25˚C, unless
otherwise noted).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Taps
kΩ
DC Performance
Resolution
16
80
40
CAT5120
CAT5121
100
50
120
60
End-to-End Resistance
CAT5122
8
10
12
TCR
End-to-End Resistance Tempco
Ratiometric Resistance Tempco
Integral Nonlinearity
200
5
ppm/˚ C
ppm/˚ C
LSB
INL
+0.5
+0.5
+0.5
600
DNL
Differential Nonlinearity
Zero/Full-Scale Error
LSB
+0.1
200
LSB
Ω
RW
Wiper Resistance
Digital Inputs
VIH
VIL
Input High Voltage
Input Low Voltage
0.7 x VDD
V
V
0.3 x VDD
Timing Characteristics (Figures 1, 2)
tCU
tCI
tIC
tIL
U/D Mode to CS Setup
CS to U/D Step Setup
CS to U/D Step Hold
U/D Step Low Period
25
50
25
25
ns
ns
ns
ns
tIH
U/D Step High Period
25
ns
fTOGGLE Up/Down Toggle Rate (1)
1
1
MHz
100kΩ variable resistor configuration,
CL = 10pF
tSETTLE Output Settling Time (2)
µs
100kΩ potentiometer configuration,
CL = 10pF
0.25
Doc. No. 2121, Rev. A
5
CAT5120/5121/5122
ELECTRICAL CHARACTERISTICS
VDD = 2.7 V to 5.5 V, VH = VDD, VL = 0, TA = -40˚C to 85˚C. Typical values are at VDD = 2.7 V, TA = 25˚C,
unless otherwise noted.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Power Supplies
VDD
IDD
Supply Voltage
2.7
5.5
25
1
V
Active Supply Current (3)
Standby Supply Current (4)
µA
µA
ISD
VDD = +5V
0.3
Notes:
1. Up/Down Toggle Rate:
1
f
=
TOGGLE
t
SETTLE
2. Typical setting times are dependant on end-to-end resistance.
3. Supply current taken while changing wiper tap, f = 1MHz.
TOGGLE
4. Supply current taken while wiper position is fixed.
TYPICAL OPERATING CHARACTERISTICS
TA = 25˚C, unless otherwise noted.
V
= 2.7V
DD
V
= 5.5V
DD
0
4
8
10
12
14
16
WIPER POSITION
V
= 5.5V
DD
V
DD
= 2.7V
Doc. No. 2121, Rev. A
6
CAT5120/5121/5122
FUNCTIONAL DESCRIPTION
The CAT5120/5121/5122 consist of a fixed resistor and
a wiper contact with 16-tap points that are digitally
controlled through a 2-wire up/down serial interface.
Threeend-to-endresistancevaluesareavailable:10kΩ,
50kΩ and 100kΩ.
The CS and U/D inputs control the position of the wiper
along the resistor array. When CS transitions from high
to low, the part will go into increment mode if U/D input
is high, and into decrement mode when U/D input is low.
Oncethemodeisset, thedevicewillremaininthatmode
until CS goes high again. A low-to-high transition at the
U/D pin will increment or decrement the wiper position
depending on the current mode (Figures 1 and 2).
TheCAT5120isdesignedtooperateasapotentiometer.
Inthisconfiguration, thelowterminaloftheresistorarray
is connected to ground (pin 2).
When the CS input transitions to high (serial interface
inactive), the value of the counter is stored and the wiper
position is maintained.
The CAT5122 performs as a variable resistor. In this
device, the wiper terminal and high terminal of the
resistor array is connected at pin 5. The CAT5121 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
mode. The serial interface is only active when CS is
low.
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.
Figure 1. Serial Interface Timing Diagram, Increment Mode
CS
t
CU
t
IC
t
IL
U/D
t
t
IH
CI
t
SETTLE
t
SETTLE
W
Note: "W" is not a digital signal. It represents wiper transitions.
Figure 2. Serial Interface Timing Diagram, Decrement Mode
CS
t
t
IC
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.
Doc. No. 2121, Rev. A
7
CAT5120/5121/5122
Adjustable Gain
APPLICATIONS INFORMATION
Figure 5 shows how to use the variable resistor to
digitally adjust the gain of a noninverting op amp
configuration. Connect the CAT5121 in series with a
resistor to ground to form the adjustable gain control of
a noninverting amplifier. The Minipots have a low 5ppm/
˚C ratiometric tempco that allows for a very stable
adjustable gain configuration over temperature.
The Minipots are intended for circuits requiring digitally
controlled adjustable resistance, such as LCD contrast
control, where voltage biasing adjusts the display con-
trast.
Alternative Positive LCD Bias Control
Use an op amp to provide buffering and gain on the
output of the CAT5120. Connect the mechanical
potentiometer to the positive input of a noninverting op
amp (Figure 3) to select a portion of the input signal by
digitally controlling the wiper terminal. Figure 4 shows a
similar circuit for the CAT5121.
Figure 3. Positive LCD Bias Control
Figure 4. Positive LCD Bias Control
+5V
+5V
H
H
30V
30V
W
V
OUT
V
OUT
L
CAT5121
L
CAT5120
Figure 5a. Adjustable Gain Circuit
Figure 5b. Adjustable Gain Circuit
V
CC
V
CC
V
IN
V
IN
V
OUT
V
OUT
H
W
L
H
CAT5120
L
CAT5121
Doc. No. 2121, Rev. A
8
CAT5120/5121/5122
PACKAGE OUTLINES
SC70
0.15(.006)
C
D
A
A
E/2
E1/2
E1
E
0.15(.006)
C
PIN #1
e
N2
N1
B
SEE DETAIL A
A2
A1
A
U1
SEATING PLANE
C
C
.10(.004)
LEAD COUNT
PIN
H
(b)
b1
CODE
5
2
3
4
-
6
2
3
4
5
6
015(.0059)
GAGE PLANE
N1
N2
c1
c
BASE METAL
N3
U
N4
SECTION A-A
DETAIL A
N5
5
S
Y
M
B
O
L
COMMON
DIMENSIONS MILLIMETER
DIMENSIONS INCH
MIN
0.80
NOM
-
MAX
1.10
MIN
NOM
-
MAX
0.031
0
0.043
0.004
0.040
0.012
0.010
0.010
0.008
0.084
0.086
0.055
A
A1
A2
b
0
-
0.10
1.00
0.30
0.25
0.25
0.20
2.15
2.20
1.35
-
0.80
0.15
0.15
0.08
0.08
1.90
2.00
1.15
0.90
0.031
0.006
0.006
0.003
0.003
0.074
0.078
0.045
0.035
NOTE:
1.
-
0.20
-
-
CONTROLLING DIMENSION: MILLIMETER. CONVERTED INCH
DIMENSION ARE NOT NECESSARILY EXACT.
0.008
b1
c
-
0.005
0.082
0.082
0.050
0.0255 BSC
0.0512 BSC
0.014
-
2.
DIMENSION "D" DOES NOT INCLUDE MOLD FLASH, PROTRUSION
OR GATE BURR. MOLD FLASH, PROTRUSION OR GATE BURR
SHALL NOT EXCEED 0.15MM (0.006") PER END.
0.13
2.10
2.10
1.25
0.65 BSC
1.30 BSC
0.36
-
c1
D
E
DIMENSION "E1" DOES NOT INCLUDE INTER-LEAD FLASH OR
PROTRUSION SHALL NOT EXCEED 0.15MM (0.006") PER SIDE.
THE PACKAGE TOP IS SMALLER THAN THE PACKAGE BOTTOM.
DIMENSION D AND E1 ARE DETERMINED AT THE OUTERMOST
EXPTREMES OF THE PLASTIC BODY EXCLUSIVE OF MOLD FLASH,
TIE BAR BURRS, GATE BURRS ADN INTERLEAD FLASH, BUT
INCLUDING ANY MISMATCH BETWEEN THE TOP AND BOTTOM OF
THE PLASTIC BODY.
E1
e
3.
e1
L
0.26
0˚
0.46
8˚
0.010
0.018
-
-
U
0
8
-
-
U1
4˚
-
10˚
4
-
10
Doc. No. 2121, Rev. A
9
CAT5120/5121/5122
SOT-23
(AA OPTION)
3
4
aaa C 2X
D
D
H
e1
B
A
5
B
N/2
+1
N
VIEW A-A
SEE VIEW C
E/2
E1/2
R1
E1
E
3
4
R
GAUGE
PLANE
L2
L
aaa C D
SEATING
PLANE
C
2X
(L1)
VIEW C
1
2
N/2
bbb
C
(b)
b1
WITH METAL
e
2X N/2 TIPS
B
NX
b
5
M
ddd C A B D
c
c1
BASE METAL
SECTION B - B
7
b
5
8
A
5
e/2
X
A2
ccc
C
A
NX
X=A &/or B
X
X=A &/or B
A1
SEATING
PLANE
ODD LEAD SIDES
TOP VIEW
EVEN LEAD SIDES
TOP VIEW
A
C
All Dimensions are in Millimeters
Min
—
Nom
—
Max
1.00
0.10
0.90
0.20
0.16
Notes
Tolerances of Form and Position
Notes
A
aaa
bbb
ccc
0.15
0.25
0.10
1,2
1,2
1,2
A1
A2
c
0.01
0.84
0.12
0.08
0.05
0.87
0.15
7
Variations
6 AB
c1
D
0.13
7
AA
Nom
—
BA
2.90BSC
2.80BSC
1.60BSC
0.40
3,4
3,4
3,4
Min
Max
0.45
0.39
Min
0.30
0.31
Nom
—
Max
0.45
0.39
Min
0.22
0.22
Nom
—
Max Notes
E
b
0.30
0.31
0.36
0.30
7,8
E1
L
b1
e
0.35
0.35
0.26
0.30
0.50
0.95BSC
1.90BSC
6
0.95BSC
1.90BSC
5
0.65BSC
1.95BSC
8
L1
L2
R
0.60REF
0.25BSC
—
e1
N
0.10
0.10
0°
—
0.25
8°
Tolerances of Form and Position
R1
θ
—
ddd
0.20
0.20
0.13
1,2
Notes:
4°
1. Dimensions and tolerancing per ASME Y14.5M - 1994
2. Dimension are in mm.
3. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs
shall not exceed 0.15mm per end. Dimension E1 does not include interlead flash or protrusion. Interlead
flash or protrusion shall not exceed 0.15mm per side. D and E1 dimensions are determined at Datum H.
θ1
4°
10°
12°
4. The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, the bar
burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. D and E1 dimensions are determined at Datum H.
5. Datums A & B to be determined at Datum H.
6. Package varation "AB" is a 5 lead version of the 6 lead variation "AA" where lead #5 has been removed from the 6 lead "AA" variation.
7. These dimensions apply to the flat section of the lead between 0.08mm and 0.15mm from the lead tip.
8. Dimension "b" does not include dambar protrusion. Allowable dambar protrusion shall be 0.08mm total in excess of the "b" dimension at maximum material condition. The dambar
cannot be located on the lower radius of the foot. Minimum space between protrusion and an adjacent lead shall not be less than 0.07mm.
Doc. No. 2121, Rev. A
10
CAT5120/5121/5122
REVISION HISTORY
Date
Rev.
Reason
03/10/2005
A
Initial Release
Copyrights, Trademarks and Patents
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
2
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Catalyst Semiconductor, Inc.
Corporate Headquarters
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www.catsemi.com
Publication #: 2121
Revison:
Issue date:
Type:
A
03/10/05
Initial Release
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