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PDF CAT5411 Data sheet ( Hoja de datos )
| Número de pieza | CAT5411 | |
| Descripción | Dual Digital Potentiometer | |
| Fabricantes | ON Semiconductor | |
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CAT5411
Dual Digital
Potentiometer (POT)
with 64 Taps
and SPI Interface
Description
The CAT5411 is two digital potentiometers (POTs) integrated with
control logic and 16 bytes of NVRAM memory. Each digital POT
consists of a series of 63 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
separate 6-bit control register (WCR) independently controls the
wiper tap switches for each digital POT. Associated with each wiper
control register are four 6-bit non-volatile memory data registers (DR)
used for storing up to four wiper settings. Writing to the wiper control
register or any of the non-volatile data registers is via a SPI serial bus.
On power-up, the contents of the first data register (DR0) for each of
the two potentiometers is automatically loaded into its respective
wiper control register.
The CAT5411 can be used as a potentiometer or as a two terminal,
variable resistor. It is intended for circuit level or system level
adjustments in a wide variety of applications.
Features
Two Linear-taper Digital Potentiometers
64 Resistor Taps per Potentiometer
End to End Resistance 2.5 kW, 10 kW, 50 kW or 100 kW
Potentiometer Control and Memory Access via SPI Interface:
Mode (0, 0) and (1, 1)
Low Wiper Resistance, Typically 80 W
Nonvolatile Memory Storage for up to Four Wiper Settings for Each
Potentiometer
Automatic Recall of Saved Wiper Settings at Power Up
2.5 to 6.0 Volt Operation
Standby Current less than 1 mA
24-lead SOIC and 24-lead TSSOP
Industrial Temperature Ranges
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
http://onsemi.com
TSSOP24
Y SUFFIX
CASE 948AR
SOIC−24
W SUFFIX
CASE 751BK
PIN CONNECTIONS
VCC
RL0
RH0
RW0
CS
WP
SI
A1
RL1
RH1
RW1
GND
1
CAT5411
SOIC−24 (W)
(Top View)
NC
NC
NC
NC
A0
SO
HOLD
SCK
NC
NC
NC
NC
SI
A1
RL1
RH1
RW1
GND
NC
NC
NC
NC
SCK
HOLD
1
CAT5411
TSSOP24 (Y)
(Top View)
WP
CS
RW0
RH0
RL0
VCC
NC
NC
NC
NC
A0
SO
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 13
1
Publication Order Number:
CAT5411/D
1 page  
CAT5411
Table 5. POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Symbol
Parameter
Test Conditions
Min Typ Max
Units
RPOT
RPOT
RPOT
RPOT
Potentiometer Resistance (−00)
Potentiometer Resistance (−50)
Potentiometer Resistance (−10)
Potentiometer Resistance (−25)
Potentiometer Resistance Tolerance
100
50
10
2.5
+20
kW
kW
kW
kW
%
IW
RW
RW
VTERM
VN
RPOT Matching
Power Rating
Wiper Current
Wiper Resistance
Wiper Resistance
Voltage on any RH or RL Pin
Noise
Resolution
1%
25C, each pot
50 mW
+6 mA
IW = +3 mA @ VCC = 3 V
IW = +3 mA @ VCC = 5 V
VSS = 0 V
(Note 4)
GND
80
300 W
150 W
VCC
V
nV/Hz
1.6 %
Absolute Linearity (Note 5)
RW(n)(actual)−R(n)(expected)
(Note 8)
+1 LSB
(Note 7)
Relative Linearity (Note 6)
RW(n+1)−[RW(n)+LSB]
(Note 8)
+0.2 LSB
(Note 7)
TCRPOT
Temperature Coefficient of RPOT
(Note 4)
+300
ppm/C
TCRATIO
Ratiometric Temp. Coefficient
(Note 4)
20 ppm/C
CH/CL/CW Potentiometer Capacitances
(Note 4)
10/10/25
pF
fc Frequency Response
RPOT = 50 kW (Note 4) 0.4 MHz
4. This parameter is tested initially and after a design or process change that affects the parameter.
5. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
6. Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer.
It is a measure of the error in step size.
7. LSB = RTOT / 63 or (RH − RL) / 63, single pot
8. n = 0, 1, 2, ..., 63
Table 6. D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Symbol
Parameter
Test Conditions
Min Max
ICC Power Supply Current
fSCK = 2 MHz, SO
Open Inputs = GND
1
ISB
ILI
ILO
VIL
VIH
VOL1
Standby Current (VCC = 5 V)
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage (VCC = 3 V)
VIN = GND or VCC; SO Open
VIN = GND to VCC
VOUT = GND to VCC
IOL = 3 mA
−1
VCC x 0.7
1
10
10
VCC x 0.3
VCC + 1.0
0.4
Units
mA
mA
mA
mA
V
V
V
http://onsemi.com
5
5 Page 
CAT5411
INSTRUCTION FORMAT
Table 13. READ WIPER CONTROL REGISTER (WCR)
CS DEVICE ADDRESS
INSTRUCTION
0 1 0 1 0 0 A1 A0 1 0 0 1 0 0
0 P0
DATA
CS
76543210
00
Table 14. WRITE WIPER CONTROL REGISTER (WCR)
CS DEVICE ADDRESS
INSTRUCTION
0 1 0 1 0 0 A1 A0 1 0 1 0 0 0
0 P0
DATA
CS
76543210
00
Table 15. READ DATA REGISTER (DR)
CS DEVICE ADDRESS
INSTRUCTION
DATA
CS
0 1 0 1 0 0 A1 A0 1 0 1 1 R1 R0 0 P0 7 6 5 4 3 2 1 0
Table 16. WRITE DATA REGISTER (DR)
CS DEVICE ADDRESS
INSTRUCTION
DATA
CS
0 1 0 1 0 0 A1 A0 1 1 0 0 R1 R0 0 P0 7 6 5 4 3 2 1 0
High
Voltage
Write
Cycle
Table 17. READ STATUS (WIP)
CS DEVICE ADDRESS
INSTRUCTION
DATA
CS
0 1 0 1 0 0 A1 A0 0 1 0 1 0 0 0 1 7 6 5 4 3 2 1 W
00
I
P
Table 18. GLOBAL TRANSFER DATA REGISTER (DR) TO WIPER CONTROL REGISTER (WCR)
CS DEVICE ADDRESS
INSTRUCTION
CS
0 1 0 1 0 0 A1 A0 0 0 0 1 R1 R0 0 0
Table 19. GLOBAL TRANSFER WIPER CONTROL REGISTER (WCR) TO DATA REGISTER (DR)
CS DEVICE ADDRESS
INSTRUCTION
CS High
0 1 0 1 0 0 A1 A0 1 0 0 0 R1 R0 0 0
Voltage
Write
Cycle
http://onsemi.com
11
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| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet CAT5411.PDF ] | |
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