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參數資料
| 型號： | ADN2860 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數字電位計 |
| 英文描述： | High Bandwidth, CMOS 8-Bit Serial Interface Multiplying D/A Converter; Package: MSOP; No of Pins: 10; Temperature Range: Industrial |
| 中文描述： | 250K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 512 POSITIONS, QCC24 |
| 封裝： | 4 X 4 MM, LFCSP-24 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 1132K |
| 代理商： | ADN2860 |
a
Preliminary Technical Data
FEATURES
3 Channels: Dual 512-Position
Single 128-Position
25K
or 150K
Full-Scale Resistance
Low Temperature Coefficient: 35ppm/
°
C
Nonvolatile Memory Retains Wiper Settings
Permanent Memory Write-Protection
Linear Increment/Decrement
Log taper Increment/Decrement
I
2
C Compatible Serial Interface
3V to 5V Single Supply Operation
±
2.5V Dual Supply Operation
256 Bytes General Purpose User EEPROM
11 Bytes RDAC user EEPROM
GBIC and SFP Compliant EEPROM
100-year Typical Data Retention at TA=55
°
C
APPLICATIONS
Laser Diode Drivers
Optical Amplifiers
TIA Gain Setting
TEC Controller Temperature Set Points
GENERAL DESCRIPTION
The ADN2860 provides dual 512-position and a single 128-
position digitally controlled variable resistor
1
(VR) in a single
4x4mm LFCSP package. This device performs the same
electronic adjustment function as a potentiometer, trimmer, or
variable resistor. Each VR offers a completely programmable
value of resistance between the A terminal and the Wiper or the
B terminal and the Wiper. The fixed A-to-B terminal resistance
of 25k
or 250k
has a 1% channel-to-channel matching
tolerance and a nominal temperature coefficient of 35ppm/
°
C.
Wiper position programming, EEPROM reading, and EEPROM
writing is conducted via the standard 2-wire I
C interface.
Previous/Default wiper position settings can be stored in
memory, and refreshed upon system power-up.
Additional features of the ADN2860 include preprogrammed
linear and logarithmic increment/decrement wiper changing, and
actual resistor tolerances are stored in EEPROM so that the
3-Channel Digital
Potentiometer with
Nonvolatile Memory
ADN2860
REV. Pr
D
Page 1 of 15
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: 781/326-8703
2003 Analog Devices, Inc. All rights reserved.
FUNCTIONAL BLOCK DIAGRAM
DATA
CONTROL
USER EEPROM
32 bytes
RDAC EEPROM
COMMAND DECODE LOGIC
ADDRESS DECODE LOGIC
CONTROL LOGIC
REGISTER
A0
W0
B0
RDAC0
9 bit
REGISTER
A1
W1
B1
RDAC1
9 bit
REGISTER
A2
W2
B2
RDAC2
7 bit
A1_E
I2C
INTERFACE
8
VDD
VSS
GND
ON RESET
PRB
WPB
256 bytes
RDAC0
RDAC1
RDAC2
A0_E
SERIAL
SCL
SDA
A0_R
A1_R
POWER
actual end-to-end resistance is known, which is valuable for
calibration in precision applications.
The ADN2860 EEPROM, channel resolution, and package size
conforms to GBIC and SFP specifications. The ADN2860 is
available in a 4x4mm 24-lead LFCSP package. All parts are
guaranteed to operate over the extended industrial temperature
range of –40C to 85
°
C.
1.
The term nonvolatile memory, EEMEM, and EEPROM are used
interchangeably
2.
The term programmable resistor, variable resistor, RDAC, and digital
potentiometer are used interchangeably.
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| ADN2860ACPZ25 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADN2860ACPZ250 | 制造商:Analog Devices 功能描述: |
| ADN2860ACPZ250-RL7 | 功能描述:IC POT DGTL 3CH 250K 24-LFCSP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數字電位器 系列:- 標準包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數:1 溫度系數:標準值 ±300 ppm/°C 存儲器類型:非易失 接口:I²C（設備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) |
| ADN2860ACPZ25-RL7 | 功能描述:IC POT DGTL 3CH 25K 24-LFCSP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數字電位器 系列:- 標準包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數:1 溫度系數:標準值 ±300 ppm/°C 存儲器類型:非易失 接口:I²C（設備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) |
| ADN2860-EVAL | 制造商:AD 制造商全稱:Analog Devices 功能描述:3-Channel Digital Potentiometer with Nonvolatile Memory |
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