AS1506-BTDT-10-1K austriamicrosystems, AS1506-BTDT-10-1K Datasheet

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AS1506-BTDT-10-1K

Manufacturer Part Number
AS1506-BTDT-10-1K
Description
IC POT DGTL 10K SERIAL 8TQFN
Manufacturer
austriamicrosystems
Datasheet

Specifications of AS1506-BTDT-10-1K

Taps
256
Resistance (ohms)
10K
Number Of Circuits
1
Temperature Coefficient
90 ppm/°C Typical
Memory Type
Non-Volatile
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-WDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
AS1506-BTDT-10-1KTR
Da t a s h eet
A S 1 5 0 6
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
H i g h E n d u r a n c e E E P R O M
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
Ordering Information on page
Table 1. Standard Products
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.
Figure 1. AS1506 - Block Diagram
www.austriamicrosystems.com
AS1506-100
AS1506-10
AS1506-50
Model
SCLK
SDIO
CSN
VDD
4
1
2
3
End-to-End Resistance (kΩ)
Shift Register
Interface
Interface
SPI
SPI
8-Bit
16).
Table 1
100
10
50
8
Power-
Reset
On
(see also
EEPROM
EEPROM
Latch
Latch
8-Bit
8-Bit
8-Bit
8-Bit
Revision 1.02
8
2 Key Features
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.
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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
256-Position
256-Position
AS1506
Decoder
Decoder
256
8
HIGH
7
WIPER
6
LOW
5
GND
1 - 17

Related parts for AS1506-BTDT-10-1K

AS1506-BTDT-10-1K Summary of contents

Page 1

... eet 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 ...

Page 2

... High Terminal. The voltage at this pin can be greater than or less than the voltage 8 HIGH at pin LOW. Current can flow into or out of this pin. N/A Exposed Pad The exposed pad is not internally connected. Leave floating. www.austriamicrosystems.com VDD 1 8 HIGH SCLK 2 7 WIPER AS1506 SDIO 3 6 LOW CSN 4 5 GND Description Revision 1. ...

Page 3

... 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 AS1506-10 +0.55 AS1506-50 +0.55 mA +0. -100 100 mA 48 ºC/W -40 +85 ºC -60 +150 ºC +150 º ...

Page 4

... AMB Condition Digital Inputs = V or GND AMB Includes Non-Volatile Write to Memory AS1506-10 AS1506-50 & -100 AS1506-10 2 AS1506-50 & -100 +85ºC AMB AS1506-10 AS1506-50 AS1506-100 AS1506-10 AS1506-50 AS1506-100 AS1506-10 AS1506-50 & -100 @ 3V AS1506-50 & -100 @ 5V AS1506-10 AS1506-50 & -100 AS1506-10 AS1506-50 AS1506-100 ...

Page 5

... 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 AS1506-10 AS1506-50 AS1506-100 AS1506-10 AS1506-50 AS1506-100 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 ...

Page 6

... AS1506 Datasheet - 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, Divider Mode 0.5 0.4 0.3 ...

Page 7

... AS1506 Datasheet - 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 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 128 160 192 224 256 Tap Position Figure 13. DNL vs. TAP Position 100kΩ ...

Page 8

... AS1506 Datasheet - Figure 15. Wiper Resistance vs. TAP; 5V 120 100 128 160 192 224 256 Tap Position Figure 17. DAC Resistor vs. Temperature 118 117 116 115 114 113 112 111 110 Temperature (°C) Figure 19. EEPROM Data Retention vs. Temperature 10000 1000 100 Temperature (°C) www.austriamicrosystems.com Figure 16. Wiper Resistance vs. TAP ...

Page 9

... AS1506 Datasheet - Detailed Description The AS1506 contains a resistor array with 255 resistive elements (tap points), and has a total end-to-end resistance of 10, 50, or 100kΩ (see Ordering Information on page The device provides high, low, and wiper terminals for a standard voltage-divider configuration. Pins HIGH, LOW, and WIPER can be connected in any configuration as long as their voltages fall between GND and V A 3-wire, SPI-compatible serial interface controls movement of the wiper among the 256 tap points ...

Page 10

... Power-Up The AS1506 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. ...

Page 11

... With the next falling edge of CSN the SDIO pin is set to an input pin again. Read Wiper Register The AS1506 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 ...

Page 12

... AS1506 Datasheet - Figure 22. 16-Bit Command/Data Word CSN SCLK SDIO Figure 23. 16-Bit Read Command Word CSN SCLK SDIO www.austriamicrosystems.com Revision 1. ...

Page 13

... V IN AS1506 Offset Voltage and Gain Adjustment Connect the AS1506 amp to nullify the offset voltage over the operating temperature range. Install another AS1506 potentiometer in the feedback path to adjust the gain of the op amp Figure 25. Offset Voltage Adjustment Circuit www.austriamicrosystems.com and can be calculated as: ...

Page 14

... Figure 28 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 AS1506. Figure 28. Adjustable Voltage Reference Circuit – V www.austriamicrosystems.com (Figure ...

Page 15

... AS1506 Datasheet - Package Drawings and Markings The device is available in an 8-pin TDFN 3x3mm package. Figure 29. 8-pin TDFN 3x3mm Package D PIN 1 INDEX AREA aaa C 2x (D/2 xE/2) TOP VIEW e Terminal Tip DETAIL B e/2 Datum EVEN TERMINAL SIDE Symbol Min Typ A 0.70 0. ...

Page 16

... SPI Digital Potentiometer ASMN AS1506-BTDT-50 SPI Digital Potentiometer ASMM AS1506-BTDT-100 SPI Digital Potentiometer Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at www ...

Page 17

... AS1506 Datasheet Copyrights Copyright © 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...

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