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AS1506-BTDT-50

Description
256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size425KB,17 Pages
ManufacturerAMS
Websitehttps://ams.com/zh
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AS1506-BTDT-50 Overview

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

AS1506-BTDT-50 Parametric

Parameter NameAttribute value
MakerAMS
Parts packaging codeDFN
Contacts8
Reach Compliance Codeunknow
Datas heet
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)
10
50
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
1
VDD
8-Bit
Shift Register
8
8-Bit
Latch
8
256
8
HIGH
256-Position
Decoder
2
SCLK
3
SDIO
4
CSN
SPI
Interface
Power-
On
Reset
8-Bit
EEPROM
7
WIPER
6
LOW
AS1506
5
GND
www.austriamicrosystems.com
Revision 1.02
1 - 17

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