AS1507 austriamicrosystems AG, AS1507 Datasheet
AS1507
Related parts for AS1507
AS1507 Summary of contents
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... General Description The AS1507 is a linear, dual 256-tap digital potentiome- ter specifically designed to replace discrete/mechanical potentiometers and is ideal for applications requiring a low-temperature-coefficient variable resistor ...
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... EEPROM is not affected. Active-High signal. Internal pull-down resistor. Can be left 16 MUTE unconnected if not used. Exposed Pad The exposed pad is not internally connected. Connect to GND or leave floating. N/A www.austriamicrosystems.com HIGH B DD SCLK 2 11 WIPER B AS1507 10 LOW B SDIO 3 CSN 4 9 READY Description Revision 1.00 www.DataSheet4U.com ...
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... The maximum rating voltage must not be exceeded during Latch-up test of the device. www.austriamicrosystems.com may cause permanent damage to the device. These are stress ratings only, Min Max Units -0.3 +7 -0.3 V 0.3 AS1507-10 +1 AS1507- -100 100 mA 48 ºC/W -40 +85 ºC -60 +150 ºC +150 º ...
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... Includes Non-Volatile Write to Memory AS1507-10 AS1507-50 & -100 AS1507-10 2 AS1507-50 & -100 +85ºC AMB AS1507-10 AS1507-50 AS1507-100 AS1507-10 AS1507-50 AS1507-100 AS1507-10 AS1507-50 & -100 @ 3V AS1507-50 & -100 @ 5V AS1507-10 AS1507-50 & -100 AS1507-10 AS1507-50 AS1507-100 ...
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... CSN-Rise to SCLK-Rise Hold CS1 t CSN Pulse-Width High CSW t Write Non-Volatile Register Busy Time BUSY www.austriamicrosystems.com Condition AS1507-10 AS1507-50 AS1507-100 AS1507-10 AS1507-50 AS1507-100 T = +85ºC AMB T = +25ºC AMB T = +85ºC AMB = 5V, LOW = GND source (5V peak to peak DD = -40 to +85ºC. Typ values are at V AMB 9 ...
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... AS1507 Data Sheet - Typical Operating Characteristics (unless otherwise specified). DD Figure 3. DNL vs. TAP Position 10kΩ, Divider Mode 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 128 160 192 224 256 Tap Position Figure 5. DNL vs. TAP Position 50kΩ ...
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... AS1507 Data Sheet - Figure 9. DNL vs. TAP Position 10kΩ, Varistor Mode 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 128 160 192 224 256 Tap Position Figure 11. DNL vs. TAP Position 50kΩ, Varistor Mode 1 0 ...
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... AS1507 Data Sheet - Figure 15. Wiper Resistance vs. TAP; 5V 120 100 128 160 192 224 256 Tap Position Figure 17. DAC Resistor vs. Temperature 118 117 ...
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... Note: Integrated power-on reset circuitry loads the wiper position from the EEPROM at power-up. Digital Interface The AS1507 uses an SPI-compatible 3-wire interface for command settings of the device consisting of two input sig- nals (chip-select - CSN, and data clock - SCLK) and one bi-directional data pin (SDIO). Driving CSN low enables serial interface and the command/data are passed into the device synchronously by each SCLK rising edge ...
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... Power-Up The AS1507 contains an integrated power-up circuit. At power up, the data are transferred from the non-volatile mem- ory to the wiper register. The wiper register moves to the stored position. This data transfer takes 5µs after the supply has reached the POR trigger level. ...
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... With the next falling edge of CSN the SDIO pin is set to an input pin again. Read Wiper Register The AS1507 features the capability to read the data from the wiper register via the SPI interface page 12). This command can be implemented 16-bit command. The SDIO pin is a bi-directional pin. During the CSN low phase of the sequence, the SDIO pin is used as input pin to set the command byte ...
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... AS1507 Data Sheet - Figure 21. 8-Bit Command Word CSN SCLK SDIO C7 C6 Figure 22. 16-Bit Command/Data Word CSN SCLK SDIO Figure 23. 16-Bit Read Command CSN SCLK SDIO Figure 24. 16-Bit EEPROM Write Command ...
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... WIPERA Offset Voltage and Gain Adjustment Connect one potentiometer of the AS1507 amp to nullify the offset voltage over the operating temperature range. Use the second potentiometer in the feedback path to adjust the gain of the op amp Figure 26. Offset Voltage and Gain Adjustment Circuit ...
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... Adjustable Voltage Reference Figure 29 shows the device used as the feedback resistor in an adjustable voltage-reference application. Output volt- ages of external voltage references, supervisory reset thresholds, or LED brightness control can be independently adjusted by changing the wiper position of the AS1507. Figure 29. Adjustable Voltage Reference Circuit – ...
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... AS1507 Data Sheet - Package Drawings and Markings The device is available in an TQFN 3x3mm 16-pin package. Figure 30. TQFN 3x3mm 16-pin Package Symbol Min Typ A 0.70 0.75 A1 0.00 0.02 L 0.30 0.40 L1 0.03 K 0.20 aaa 0.10 bbb 0.10 ccc ...
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... Model Marking Dual 256-Tap, Non-Volatile, AS1507-BTDT-10 ASPF SPI Digital Potentiometer Dual 256-Tap, Non-Volatile, ASPE AS1507-BTDT-50 SPI Digital Potentiometer Dual 256-Tap, Non-Volatile, ASPD AS1507-BTDT-100 SPI Digital Potentiometer www.austriamicrosystems.com Table 7. End-to-End Description Delivery Form Resistance 10kΩ Tape and Reel 50kΩ ...
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... AS1507 Data Sheet - Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. ...