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AS1506_1: Description256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM; File Size425KB，17 Pages; ManufacturerAMS; Websitehttps://ams.com/zh

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256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM

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AS1506

2 5 6 - Ta p D i g i ta l P o t e n t i o m e t e r w i t h S P I I n t e r f a c e a n d

High Endurance EEPROM

1 General Description

The AS1506 is a linear, 256-tap digital potentiometer

specifically designed to replace discrete/mechanical

potentiometers and is ideal for applications requiring a

low-temperature-coefficient variable resistor, such as

low-drift, programmable gain, and amplifier circuit con-

figurations.

The device is controlled via a 3-wire SPI-compatible

interface and features an internal EEPROM for storing

wiper positions.

Several device variants are available differentiated by

end-to-end resistance as shown in

Table 1

(see also

Ordering Information on page 16).

Table 1. Standard Products

Model

AS1506-10

AS1506-50

AS1506-100

End-to-End Resistance (kΩ)

100

2 Key Features

High Endurance: EEPROM up to 10M cycles

High Reliability: EEPROM up to 150 years data

retention @ 85°C

Wiper Position Retained in EEPROM and loaded at

Power-Up

256 Tap Positions

±0.5LSB DNL in Voltage Divider Mode

±0.5LSB INL in Voltage Divider Mode

End-to-End Resistance: 10/50/100kΩ

Low End-to-End Resistance Temperature

Coefficient: 90ppm/ºC

Low-Power Standby Mode: 100nA

5MHz SPI-Compatible Serial Interface

Single-Supply Operation: +2.7V to +5.5V

8-pin TDFN 3x3mm Package

The 3-wire SPI-compatible serial interface allows com-

munication at data rates up to 5MHz.The internal

EEPROM stores the last wiper position for initialization

during power-up and a low-power standby mode.

The devices are available in an 8-pin TDFN 3x3mm

package.

3 Applications

The device is ideal for mechanical potentiometer

replacement, low-drift programmable gain amplifiers,

audio volume control, LCD contrast control, and low-drift

programmable filters.

Figure 1. AS1506 - Block Diagram

VDD

8-Bit

Shift Register

8-Bit

Latch

256

HIGH

256-Position

Decoder

SCLK

SDIO

CSN

SPI

Interface

Power-

Reset

8-Bit

EEPROM

WIPER

LOW

AS1506

GND

www.austriamicrosystems.com

Revision 1.02

1 - 17

AS1506_1 Related Products

	AS1506_1	AS1506-10	AS1506-BTDT-100	AS1506-BTDT-10	AS1506-50	AS1506-BTDT-50	AS1506-100
Description	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM	256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM

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