General Description
The MAX5481–MAX5484 10-bit (1024-tap) nonvolatile,linear-taper, programmable voltage-dividers and vari-able resistors perform the function of a mechanical potentiometer, but replace the mechanics with a pin-configurable 3-wire rial SPI™-compatible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484are 2-terminal variable resistors.
The MAX5481–MAX5484 feature an internal, non-volatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for ini-tialization during power-up. The 3-wire SPI-compatible rial interface allows communication at data rates up to 7MHz. A pin-lectable up/down digital interface is also available.
The MAX5481–MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-to-end resistance values are available (10k Ωand 50k Ω) in a voltage-divider or a variable-resistor configuration (e the Selector Guide ). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making the devices ideal for applications requiring low-temperature-coefficient voltage-dividers,such as low-drift, programmable gain-amplifiers.
The MAX5481–MAX5484 operate with either a +2.7V to +5.25V single power supply or ±2.5V dual power sup-plies. The devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.0µA (max) of standby supply current. The MAX5481–MAX5484 are available in a space-saving (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP pack-age and are specified over the extended (-40°C to +85°C) temperature range.
Applications
Features
♦1024 Tap Positions
♦Power-On Recall of Wiper Position from Nonvolatile Memory
♦16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin TSSOP Package
♦35ppm/°C End-to-End Resistance Temperature Coefficient
♦5ppm/°C Ratiometric Temperature Coefficient ♦10k Ωand 50k ΩEnd-to-End Resistor Values
♦Pin-Selectable SPI-Compatible Serial Interface or Up/Down Digital Interface ♦1µA (max) Standby Current
♦Single +2.7V to +5.25V Supply Operation ♦Dual ±2.5V Supply Operation
MAX5481–MAX5484
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
________________________________________________________________Maxim Integrated Products
1
Ordering Information
Pin Configurations
19-3708; Rev 4; 12/07
For pricing delivery, and ordering information plea contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at
Selector Guide appears at end of data sheet.SPI is a trademark of Motorola, Inc.
Note: All devices are specified over the -40°C to +85°C operating temperature range.*EP = Expod pad.
Ordering Information continued at end of data sheet.
Gain and Offt Adjustment
LCD Contrast Adjustment Pressure Sensors
Low-Drift Programmable Gain Amplifiers
江村经济读后感Mechanical Potentiometer Replacement
M A X 5481–M A X 5484
10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers
ABSOLUTE MAXIMUM RATINGS
Stress beyond tho listed under “Absolute Maximum Ratings” may cau permanent damage to the device. The are stress ratings only, and functional operation of the device at the or any other conditions beyond tho indicated in the operational ctions of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
V DD -0.3V to +6.0V V SS -3.5V to +0.3V V DD to V SS .............................................................-0.3V to +6.0V H, L, W to V SS ..................................(V SS - 0.3V) to (V DD + 0.3V)CS , SCLK(INC ), DIN(U/D ), SPI/UD to GND..-0.3V to (V DD + 0.3V)Maximum Continuous Current into H, L, and W
±5mA ±1.0mA Maximum Current into Any ±50mA
Continuous Power Dissipation (T A = +70°C)
16-Pin TQFN (derate 17.5mW/°C above +70°C).....1398.6mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C)..........727mW Operating Temperature Range ...........................-40°C to +85°C +150°C Storage -60°C to +150°C Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS
MAX5481–MAX5484
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = +2.7V to +5.25V, V SS = GND = 0, V H = V DD , V L = 0, T A = -40°C to +85°C, unless otherwi noted. Typical values are at V DD = +5.0V, T A = +25°C, unless otherwi noted.) (Note 1)
M A X 5481–M A X 5484
10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers 4_______________________________________________________________________________________
TIMING CHARACTERISTICS
Note 2:The DNL and INL are measured with the device configured as a voltage-divider with H = V DD and L = V SS . The wiper termi-nal (W) is unloaded and measured with a high-input-impedance voltmeter.
Note 3:The DNL_R and INL_R are measured with D.N.C. unconnected and L = V SS = 0. For V DD = 5V, the wiper terminal is driven
with a source current of I W = 80µA for the 50k Ωdevice and 400µA for the 10k Ωdevice. For V DD = 3V, the wiper terminal is driven with a source current of 40µA for the 50k Ωdevice and 200µA for the 10k Ωdevice.
Note 4:The wiper resistance is measured using the source currents given in Note 3.
Note 5:The device draws higher supply current when the digital inputs are driven with voltages between (V DD - 0.5V) and (GND +
0.5V). See Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics .
Note 6:Wiper ttling test condition us the voltage-divider configuration with a 10pF load on W. Transition code from 00000 00000
to 01111 01111 and measure the time from CS going high to the wiper voltage ttling to within 0.5% of its final value.
MAX5481–MAX5484
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
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-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.00
2563841285126407688961024
DNL vs. CODE (MAX5483)
酸菜鱼汤CODE
D N L (L S B )
V DD = 2.7V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024
DNL vs. CODE (MAX5483)
CODE
D N L (L S B )
V DD = 5V
-2.0
-
1.0-1.50-0.50.51.01.52.0
INL vs. CODE (MAX5483)
I N L (L S B )
V DD = 2.7V
02563841285126407688961024
CODE
-2.0
-1.0-1.50-0.50.51.01.52.0INL vs. CODE (MAX5483)
I N L (L S B )
V DD = 3V
2563841285126407688961024
CODE
-2.0
-1.0-1.50-0.50.51.01.52.0INL vs. CODE (MAX5483)
I N L (L S B )
V DD = 5V
02563841285126407688961024
CODE
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024
DNL vs. CODE (MAX5481)
CODE
D N L (L S B )
V DD = 2.7V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.00
2563841285126407688961024
DNL vs. CODE (MAX5481)
CODE
中国五大湖
D N L (L S B )
V DD = 5V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.0
02563841285126407688961024
INL vs. CODE (MAX5481)
CODE
I N L (L S B )
V DD = 2.7V
-1.0
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INL vs. CODE (MAX5481)
CODE
I N L (L S B )
V DD = 5V
Typical Operating Characteristics
(V DD = 5.0V, V SS = 0, T A = +25°C, unless otherwi noted.)
M A X 5481–M A X 5484
10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers 6_______________________________________________________________________________________
-1.0
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2563841285126407688961024
DNL vs. CODE (MAX5484)
CODE
D N L (L S B )
V DD = 2.7V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024
DNL vs. CODE (MAX5484)
CODE
D N L (L S B )
V DD = 5V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.0
外国文化02563841285126407688961024伤心语录经典语录
INL vs. CODE (MAX5484)
CODE
I N L (L S B )
V DD = 2.7V盐煎肉的做法最正宗的做法
-1.0
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2563841285126407688961024
INL vs. CODE (MAX5484)
CODE
I N L (L S B )
V DD = 5V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.0
月经量多
02563841285126407688961024
DNL vs. CODE (MAX5482)
CODE
D N L (L S B )
V DD = 2.7V
-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024
DNL vs. CODE (MAX5482)
CODE
D N L (L S B )
V DD = 5V
-
1.0
-0.6-0.8-0.2-0.40.200.40.80.61.00
2563841285126407688961024
INL vs. CODE (MAX5482)
CODE
I N L (L S B )
V DD = 2.7V
怎样煮羊肉-1.0
-0.6-0.8-0.2-0.40.200.40.80.61.0
2563841285126407688961024
INL vs. CODE (MAX5482)
CODE
I N L (L S B )
V DD = 5V
02010
4030
50607080WIPER RESISTANCE vs. CODE (VARIABLE RESISTOR, T A = -40°C)
M A X 5481 t o c 18R W (Ω)
2563841285126407688961024
CODE
Typical Operating Characteristics (continued)
(V DD = 5.0V, V SS = 0, T A = +25°C, unless otherwi noted.)
