|
|
PDF MAX5432 Data sheet ( Hoja de datos )
| Número de pieza | MAX5432 | |
| Descripción | 32-Tap Nonvolatile I2C Linear Digital Potentiometers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX5432 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
19-3511; Rev 3; 11/07
EVAALVUAAILTAIOBNLEKIT
www.DataSheet4U.com
32-Tap, Nonvolatile, I2C, Linear, Digital
Potentiometers
General Description
The MAX5432–MAX5435 nonvolatile, linear-taper, digi-
tal potentiometers perform the function of a mechanical
potentiometer, but replace the mechanics with a simple
2-wire serial interface. Each device performs the same
function as a discrete potentiometer or a variable resis-
tor and has 32 tap points.
The MAX5432–MAX5435 feature an internal, nonvolatile,
electrically erasable programmable read-only memory
(EEPROM) that returns the wiper to its previously stored
position at power-up. The fast-mode I2C-compatible
serial interface allows communication at data rates up to
400kbps, minimizing board space and reducing inter-
connection complexity. Each device is available with
multiple factory-preset I2C addresses (see the Ordering
Information/Selector Guide).
Use the MAX5432–MAX5435 in applications requiring
digitally controlled resistors. Two resistance values are
available (50kΩ and 100kΩ) in a voltage-divider or vari-
able resistor configuration. The nominal resistor temper-
ature coefficient is 35ppm/°C end-to-end, and only
5ppm/°C ratiometric, making the devices ideal for
applications requiring a low-temperature-coefficient
variable resistor such as low-drift, programmable-gain
amplifier circuit configurations.
The MAX5432/MAX5433 are available in a 3mm x 3mm
8-pin TDFN package and the MAX5434/MAX5435 are
available in a 6-pin thin SOT23 package. The MAX5432–
MAX5435 are specified over the extended (-40°C to
+85°C) temperature range.
Applications
Mechanical Potentiometer Replacement
Low-Drift Programmable-Gain Amplifiers
Volume Control
Liquid-Crystal Display (LCD) Screen Adjustment
Features
♦ Tiny 3mm x 3mm 8-Pin TDFN and 6-Pin Thin
SOT23 Packages
♦ Power-On Recall of Wiper Position from
Nonvolatile Memory
♦ 35ppm/°C End-to-End Resistance Temperature
Coefficient
♦ 5ppm/°C Ratiometric Temperature Coefficient
♦ 50kΩ/100kΩ Resistor Values
♦ Fast 400kbps I2C-Compatible Serial Interface
♦ 500nA (typ) Static Supply Current
♦ +2.7V to +5.25V Single-Supply Operation
♦ 32 Tap Positions
♦ ±0.15 LSB INL (typ), ±0.15 LSB DNL (typ)
Pin Configurations
TOP VIEW
+
H1
SDA 2
GND 3
SCL 4
MAX5432
MAX5433
TDFN
8W
+
VDD 1
7 L GND 2
6 A0 SCL 3
5 VDD
MAX5434
MAX5435
SOT23
6L
5W
4 SDA
Ordering Information/Selector Guide
PART
PIN-PACKAGE
TOP MARK
I2C ADDRESS
MAX5432LETA+
MAX5432META+
MAX5433LETA+
MAX5433META+
MAX5434LEZT+T
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
6 Thin SOT23-6
ANG
ANI
ANF
ANH
AABX
010100A0**
010110A0**
010100A0**
010110A0**
0101000
*EP = Exposed pad.
**A0 represents the logic state of input A0 of the device in the TDFN package.
+Denotes a lead-free package.
T = Tape and reel.
Note: All devices are specified over the -40°C to +85°C operating temperature range.
Ordering Information/Selector Guide continued at end of data sheet.
R (kΩ)
50
50
100
100
50
PKG CODE
T833-1
T833-1
T833-1
T833-1
Z6-1
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
www.DataSheet4U.com
32-Tap, Nonvolatile, I2C, Linear, Digital
Potentiometers
Typical Operating Characteristics (continued)
(VDD = +5V, TA = +25°C, unless otherwise noted.)
END-TO-END RESISTANCE % CHANGE
vs. TEMPERATURE
1.0
50kΩ
0.5
END-TO-END RESISTANCE % CHANGE
vs. TEMPERATURE
1.0
100kΩ
0.5
TAP-TO-TAP SWITCHING TRANSIENT
(0 TO MIDSCALE, CL = 10pF)
MAX5432–35 toc06
SDA
2V/div
00
-0.5 -0.5
-1.0
-40
-15 10 35 60
TEMPERATURE (°C)
85
TAP-TO-TAP SWITCHING TRANSIENT
(0 TO MIDSCALE, CL = 10pF)
MAX5432–35 toc07
SDA
2V/div
-1.0
-40
-15 10 35 60
TEMPERATURE (°C)
85
WIPER TRANSIENT AT POWER-ON
MAX5432–35 toc08
VDD
2V/div
1µs/div
VW
1V/div
50kΩ
MIDSCALE WIPER TRANSIENT
AT POWER-ON
MAX5432–35 toc09
VDD
2V/div
VW
1V/div
VW
1V/div
VW
1V/div
1µs/div
100kΩ
10µs/div
50kΩ
10µs/div
100kΩ
MIDSCALE WIPER RESPONSE
vs. FREQUENCY
(MAX5432)
0
-3
CW = 10pF
-6
-9
CW = 33pF
-12
-15
MIDSCALE WIPER RESPONSE
vs. FREQUENCY (MAX5433)
0
-3 CW = 10pF
-6
-9
CW = 33pF
-12
-15
WIPER RESISTANCE vs. TAP POSITION
(MAX5432)
700
VDD = 3V
600
500
400
300
200
100
-18
0.1
1 10 100
FREQUENCY (kHz)
1000
-18
0.1
0
1 10 100 1000
0 4 8 12 16 20 24 28 31
FREQUENCY (kHz)
TAP POSITION
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
32-Tap, Nonvolatile, I2C, Linear, Digital
Potentiometers
SDA
SCL
DATA STABLE, CHANGE OF
DATA VALID DATA ALLOWED
Figure 5. Bit Transfer
START
CONDITION
SCL
1
2
SDA
Figure 6. Acknowledge
CLOCK PULSE FOR
ACKNOWLEDGMENT
89
NOT ACKNOWLEDGE
ACKNOWLEDGE
COMMAND BYTE IS STORED ON
RECEIPT OF STOP CONDITION
S
SLAVE
ADDRESS
ACKNOWLEDGE FROM
MAX5432–MAX5435
NOP/W
0
D15 D14 D13 D12 D11 D10 D9 D8
A COMMAND BYTE A
ACKNOWLEDGE FROM
MAX5432–MAX5435
P
Figure 7. Command Byte Received
HOW COMMAND BYTE AND DATA BYTE MAP
INTO MAX5432–MAX5435's REGISTERS
ACKNOWLEDGE FROM
MAX5432–MAX5435
ACKNOWLEDGE FROM
MAX5432–MAX5435
D15 D14 D13 D12 D11 D10 D9 D8
ACKNOWLEDGE FROM
MAX5432–MAX5435
D7 D6 D5 D4 D3 X
XX
S
SLAVE ADDRESS
0A
COMMAND BYTE
A
DATA BYTE
AP
NOP/W
1
BYTE
Figure 8. Command and Single Data Byte Received
Nonvolatile Memory
The internal EEPROM consists of a 5-bit nonvolatile
register that retains the value written to it before the
device is powered down. The nonvolatile register is
programmed with the zeros at the factory. Wait a mini-
mum of 12ms after writing to NVREG before sending
another command.
Power-Up
Upon power-up, the MAX5432–MAX5435 load the data
stored in the nonvolatile memory register into the
volatile memory register, updating the wiper position
with the data stored in the nonvolatile memory register.
This initialization period takes 20µs.
Standby
The MAX5432–MAX5435 feature a low-power standby
mode. When the device is not being programmed, it
goes into standby mode and current consumption is
typically 0.5µA.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MAX5432.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX543 | CMOS / 12-Bit / Seral-Input Multiplying DAC |  Maxim Integrated |
| MAX5430 | +-15V Digitally Programmable Precision Voltage-Dividers | Maxim Integrated Products |
| MAX5431 | +-15V Digitally Programmable Precision Voltage-Dividers | Maxim Integrated Products |
| MAX5432 | 32-Tap Nonvolatile I2C Linear Digital Potentiometers | Maxim Integrated Products |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |