Datasheet > AS1507-BTDT-100

AS1507-BTDT-100

更新时间： 2024-11-23 06:37:43

品牌	Logo	应用领域
艾迈斯 - AMSCO		电位器可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
17页	530K
描述
Dual 256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM

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AS1507-BTDT-100 数据手册

Data Sheet

AS1507

Dual 256-Tap Digital Potentiometer with SPI Interface

and High Endurance EEPROM

1 General Description

2 Key Features

ꢀ

High Endurance: EEPROM up to 10M cycles

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.

ꢀ

High Reliability: EEPROM up to 150 years data

retention @ 85°C

ꢀ

Wiper Position Retained in EEPROM and loaded at

Power-Up

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

interface and features an internal EEPROM for storing

wiper positions.

ꢀ

256 Tap Positions

Several device variants are available differentiated by

end-to-end resistance as shown in Table 1 (see also

Ordering Information on page 16).

±0.5LSB DNL in Voltage Divider Mode

±0.5LSB INL in Voltage Divider Mode

End-to-End Resistance: 10/50/100kΩ

Table 1. Standard Products

Model

End-to-End Resistance (kΩ)

Low End-to-End Resistance Temperature

Coefficient: 90ppm/ºC

AS1507-10

AS1507-50

AS1507-100

ꢀ

Low-Power Standby Mode: 100nA

5MHz SPI-Compatible Serial Interface

Single-Supply Operation: +2.7 to +5.5V

TQFN 3x3mm 16-pin Package

100

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.

The devices are available in an TQFN 3x3mm 16-pin

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. Block Diagram

READY

VDD

8-Bit

HIGH A

Latch

256-Position

Decoder

MUTE

WIPER

SCLK

SPI

Interface

Power-

Reset

16-Bit

EEPROM

LOW A

SDIO

HIGH B

CSN

256-Position

Decoder

WIPER

8-Bit

Latch

LOW B

AS1507

GND

www.austriamicrosystems.com

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