MAX5394 MAXIM [Maxim Integrated Products], MAX5394 Datasheet

no-image

MAX5394

Manufacturer Part Number
MAX5394
Description
Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
The MAX5394 single, 256-tap volatile, low-voltage
linear taper digital potentiometer offers three end-to-
end resistance values of 10kΩ, 50kΩ, and 100kΩ.
Potentiometer terminals are independent of supply for
voltages up to 5.25V with single-supply operation from
1.7V to 5.5V (charge pump enabled). User-controlled
shutdown modes allow the H, W, or L terminal to be
opened with the wiper position set to zero-code, mid-
code, full-code, or the value contained in the wiper
register. Ultra-low-quiescent supply current (< 1µA) can
be achieved for supply voltages between 2.6V and 5.5V
by disabling the internal charge pump and not allowing
potentiometer terminals to exceed the supply voltage by
more than 0.3V. The MAX5394 provides a low 50ppm/°C
end-to-end temperature coefficient and features a SPI
serial interface.
The small package size, low operating supply voltage,
low supply current, and automotive temperature range
of the MAX5394 make the device uniquely suited for the
portable consumer market, battery-backup industrial
applications, and automotive market.
The MAX5394 is available in a lead-free, 8-pin TDFN
(2mm x 2mm) package. The device operates over the
-40°C to +125°C automotive temperature range.
Ordering Information
For related parts and recommended products to use with this part, refer to:
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
Single, 256-Tap Volatile, SPI, Low-Voltage Linear
appears at end of data sheet.
General Description
SCLK
DIN
CS
V
DD
GND
(CHARGE PUMP ENABLED)
INTERFACE
SPI
1.7V TO 5.5V
MAX5394
Taper Digital Potentiometer
H
L
www.maximintegrated.com/MAX5394.related
S Single Linear Taper 256-Tap Positions
S 10kI, 50kI, and 100kI End-to-End Resistance
S 1.7V to 5.5V Extended Single Supply
S 0 to 5.25V H, W, L Operating Voltage Independent
S 1µA (typ) Supply Current in Low-Power Mode
S ±1.0 LSB INL, ±0.5 LSB DNL (max) Wiper Accuracy
S Power-On Sets Wiper to Midscale
S 50ppm/NC End-to-End Temperature Coefficient
S 5ppm/NC Ratiometric Temperature Coefficient
S -40NC to +125NC Operating Temperature Range
S 2mm x 2mm, 8-Pin TDFN Package
S SPI-Compatible Serial Interface
V
O
of V
/ V
W
S
= 1 + R
Portable Electronics
System Calibration
Battery-Powered Systems
Automotive Electronics
Mechanical Potentiometer Replacement
DD
MAX5394
V
S
R1
/R
1
Typical Operating Circuit
MAX4250
+5V
V
O
MAX5394
Applications
19-6392; Rev 1; 9/12
Features

Related parts for MAX5394

MAX5394 Summary of contents

Page 1

... The small package size, low operating supply voltage, low supply current, and automotive temperature range of the MAX5394 make the device uniquely suited for the portable consumer market, battery-backup industrial applications, and automotive market. The MAX5394 is available in a lead-free, 8-pin TDFN (2mm x 2mm) package. The device operates over the -40° ...

Page 2

... (charge pump disabled) ................ -0.3V to the lower of All Other Pins .........................................................-0.3V to +6V Continuous Current into H, W, and L MAX5394L .........................................................................5mA MAX5394M ........................................................................2mA MAX5394N ........................................................................1mA Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera- tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...

Page 3

... Charge pump disabled, 2.6V < Charge pump enabled, VDD 1.7V < V < 5.5V DD 2.6V < V < 5. 1.7V < V < 2.6V DD 2.6V < V < 5. 1.7V < V < 2.6V DD MAX5394 MIN TYP -0.5 < 5. < 5. -25 10kΩ 1600 50kΩ 340 100kΩ 165 0.035 10kΩ 190 50kΩ ...

Page 4

... DD = 5.5V, the wiper terminal is driven with a source current of 400µA for the 10kΩ +2.6V, the wiper terminal is driven with a source current of 200µA for the 10kΩ DD amplitude tone and V DD MAX5394 MIN TYP < 5.5V ...

Page 5

... Figure 2. SPI Timing Diagram Maxim Integrated Taper Digital Potentiometer MAX5394 N. CSA CSH1 CSF 5 ...

Page 6

... END-TO-END RESISTANCE PERCENTAGE CHANGE vs. TEMPERATURE 0.8 0.6 0.4 0.2 0 -0.2 3.0 3.5 4.0 4.5 5.0 -40 -25 -10 5 MAX5394 T = +25° -40°C A 3.60 4.55 5.50 INPUT VOLTAGE (V) 96 128 160 192 224 256 TAP POSITION 100kI 50kI 10kI 110 125 TEMPERATURE (°C) 6 ...

Page 7

... V W-L 10mV/div V SCLK 2V/div 200ns/div MAX5394 toc12b V W-L 1V/div V DD 1V/div 10µs/div MAX5394 TAP-TO-TAP SWITCHING TRANSIENT (CODE 127 TO 128 50kI) MAX5394 toc10 V W-L 10mV/div V SCLK 2V/div 200ns/div POWER-ON TRANSIENT (10kI) MAX5394 toc12a V W-L 1V/div V DD 1V/div 10µs/div POWER-ON TRANSIENT (100kI) MAX5394 toc12c ...

Page 8

... 2.6V 2.6V, CHARGE PUMP OFF 5.0V 5.0V, CHARGE PUMP OFF DD H 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 224 256 128 160 TAP POSITION MAX5394 MIDSCALE FREQUENCY RESPONSE (100kI - 10pF 1.8V DD -30 100k 1M 10M 0.01k 0.1k 1k FREQUENCY (Hz) VARIABLE-RESISTOR DNL vs. TAP POSITION (10kI) ...

Page 9

... TAP POSITION 0.5 = 5.0V, CHARGE PUMP ON 0.4 = 2.6V, CHARGE PUMP OFF 0.3 = 5.0V, CHARGE PUMP OFF 0.2 0.1 -0.1 -0.2 -0.3 -0.4 -0.5 96 128 160 192 224 256 TAP POSITION MAX5394 VOLTAGE-DIVIDER DNL vs. TAP POSITION (10kI) 0 1.8V 0 2.6V 0 5.0V 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 192 224 256 VOLTAGE-DIVIDER INL vs. TAP POSITION (10kI) ...

Page 10

... High Terminal. The voltage at H can be greater than or less than the voltage at L. Current can flow into out of H. — EP Exposed Pad. Internally connected to GND. Connected to ground. Maxim Integrated Taper Digital Potentiometer TOP VIEW GND MAX5394 DIN 4 SCLK 5 TDFN FuNCTION MAX5394 Pin Configuration DD Pin Description 10 ...

Page 11

... The MAX5394 provides a low 50ppm/°C end-to-end temperature coefficient and features a SPI serial interface. The small package size, low supply operating voltage, low supply current, and automotive temperature range of the MAX5394 make the device uniquely suited for the CS SCLK DIN C7 ...

Page 12

... This command does not affect the charge-pump status. SD_H_ZERO Command Opens the L terminal and maintains the wiper at the wiper register location. Writes cannot be made to the wiper register while shutdown mode is engaged. Clearing shutdown mode will close the L terminal and allow wiper MAX5394 DATA BYTE ...

Page 13

... Disables the on-board charge pump and places device in low power mode. Low supply voltage is limited to 2.6V. Returns device to power-on default conditions. Resets the wiper register to midscale (0x80), enables charge pump, and deasserts any shutdown modes. SD_L_FULL Command MAX5394 SD_W Command QP_ON Command QP_OFF Command RST Command 13 ...

Page 14

... RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACkAgE PACkAgE TYPE CODE 8 TDFN-EP T822+2 MAX5394 END-TO-END RESISTANCE (kI 100 OuTLINE LAND NO. ...

Page 15

... Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated Products, Inc. © Taper Digital Potentiometer DESCRIPTION The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. MAX5394 Revision History PAgES CHANgED — ...

Related keywords