DatasheetsPDF.com

MAX5401 Dataheets PDF



Part Number MAX5401
Manufacturers Maxim
Logo Maxim
Description 256-Tap SOT-PoT / Low-Drift Digital Potentiometers in SOT23
Datasheet MAX5401 DatasheetMAX5401 Datasheet (PDF)

19-1848; Rev 0; 10/00 256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23 General Description The MAX5400/MAX5401 digital potentiometers offer 256-tap SOT-PoT™ digitally controlled variable resistors in tiny 8-pin SOT23 packages. Each device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact. They operate from +2.7V to +5.5V single-supply voltages and use an ultra-low supply current of 0.1µA. These devices also provide.

  MAX5401   MAX5401


Document
19-1848; Rev 0; 10/00 256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23 General Description The MAX5400/MAX5401 digital potentiometers offer 256-tap SOT-PoT™ digitally controlled variable resistors in tiny 8-pin SOT23 packages. Each device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact. They operate from +2.7V to +5.5V single-supply voltages and use an ultra-low supply current of 0.1µA. These devices also provide glitchless switching between resistor taps, as well as a convenient poweron reset that sets the wiper to the midscale position at power-up. A low 5ppm/°C ratiometric temperature coefficient makes it ideal for applications requiring low drift. The MAX5400/MAX5401 serve well in applications requiring digitally controlled resistors, including adjustable voltage references and programmable gain amplifiers (PGAs). A nominal end-to-end resistor temperature coefficient of 50ppm/°C allows these parts to be used as variable resistors in applications such as low-tempco adjustable gain and other circuit configurations. Two resistance values are available: 50kΩ (MAX5400) and 100kΩ (MAX5401). Each device is guaranteed over the extended industrial temperature range (-40°C to +85°C). o Miniature 8-Pin SOT23 (3mm x 3mm) o 256 Tap Positions o Ultra-Low 0.1µA Supply Current o Single-Supply Operation: +2.7V to +5.5V o Low Ratiometric Temperature Coefficient: 5ppm/°C o Power-On Reset: Wiper Goes to Midscale (Position 128) o Glitchless Switching Between the Resistor Taps o 3-Wire SPI™-Interface Compatible o 50kΩ/100kΩ Resistor Values Features MAX5400/MAX5401 Ordering Information PART MAX5400EKA-T MAX5401EKA-T TEMP. RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 8-SOT23 8-SOT23 R (kΩ) 50 100 ________________________Applications Mechanical Potentiometer Replacement Low-Drift PGAs Adjustable Voltage References SOT-PoT is a trademark of Maxim Integrated Products. SPI is a trademark of Motorola, Inc. Pin Configuration appears at end of data sheet. Functional Diagram VDD H 8 8-BIT SHIFT REGISTER 8-BIT LATCH 8 DECODER W DIN L MAX5400/MAX5401 SCLK CS CLOCK LOGIC POR GND ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23 MAX5400/MAX5401 ABSOLUTE MAXIMUM RATINGS VDD to GND ............................................................. -0.3V to +6V DIN, SCLK, CS to GND ............................................-0.3V to +6V H, L, W to GND...........................................-0.3V to (VDD + 0.3V) Maximum Continuous Current into Pins H, L, and W ...........................................................±1mA Continuous Power Dissipation (TA = +70°C) 8-Pin SOT23 (derate 8.7mW/°C above +70°C)...........697mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ..................................................…+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond 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 beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VDD = +5V, VH = VDD, VL = 0, TA = TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise noted. Parameters are measured at TA = +25°C. Values over full temperature range are guaranteed by design.) PARAMETER Resolution Integral Nonlinearity (Notes 1, 2) Differential Nonlinearity (Notes 1, 2) End-to-End Resistor Tempco Ratiometric Resistor Tempco Full-Scale Ratio Error Zero-Scale Ratio Error POWER SUPPLIES Supply Voltage Supply Current VDD IDD CS = SCLK = DIN = VDD VDD = 5V VDD = 2.7V 8 VCC = 5V INL VCC = 3V VCC = 5V VCC = 3V 250 25 MAX5401 MAX5400 75 37.5 100 50 125 62.5 MAX5400 MAX5401 ±1 ±1.5 ±1 ±1/2 ±1/2 800 LSB LSB 2.7 0.7 0.1 5.5 5 V µA µA Bits MAX5400 MAX5401 MAX5400 MAX5401 SYMBOL N INL DNL TCR 50 5 -0.8 -0.4 +0.8 +0.4 CONDITIONS MIN 8 ±1/2 ±1/2 TYP MAX UNITS Bits LSB LSB ppm/°C ppm/°C LSB LSB DC PERFORMANCE (Voltage Divider Mode) DC PERFORMANCE (Variable Resistor Mode) Resolution Integral Nonlinearity (Notes 1, 3) Differential Nonlinearity (Notes 1, 3) Wiper Resistance (Note 4) Wiper Capacitance End-to-End Resistance N DNL DC PERFORMANCE (Resistor Characteristics) RW CW RHL Ω pF kΩ 2 _______________________________________________________________________________________ 256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23 ELECTRICAL CHARACTERISTICS (cont.


MAX5400 MAX5401 MAX5402


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)