參數(shù)資料
型號(hào)： MAX5489EUD+T
廠商： Maxim Integrated Products
文件頁數(shù)： 1/13頁
文件大?。?/td> 0K
描述： IC POT DGTL DUAL 256-TAP 14TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
接片： 256
電阻（歐姆）： 100k
電路數(shù)： 2
溫度系數(shù)： 標(biāo)準(zhǔn)值 35 ppm/°C
存儲(chǔ)器類型： 非易失
接口： 3 線串行（芯片選擇）
電源電壓： 2.7 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 帶卷 (TR)
General Description
The MAX5487/MAX5488/MAX5489 dual, linear-taper,
digital potentiometers function as mechanical poten-
tiometers with a simple 3-wire SPI-compatible digital
interface that programs the wipers to any one of 256
tap positions. These digital potentiometers feature a
nonvolatile memory (EEPROM) to return the wipers to
their previously stored positions upon power-up.
The MAX5487 has an end-to-end resistance of 10k
,
while the MAX5488 and MAX5489 have resistances of
50k
and 100k, respectively. These devices have a
low 35ppm/°C end-to-end temperature coefficient, and
operate from a single +2.7V to +5.25V supply.
The MAX5487/MAX5488/MAX5489 are available in
16-pin 3mm x 3mm x 0.8mm TQFN or 14-pin TSSOP
packages. Each device is guaranteed over the extended
-40
°C to +85°C temperature range.
Applications
LCD Screen Adjustment
Audio Volume Control
Mechanical Potentiometer Replacement
Low-Drift Programmable Filters
Low-Drift Programmable-Gain Amplifiers
Features
o Wiper Position Stored in Nonvolatile Memory
(EEPROM) and Recalled Upon Power-Up or
Recalled by an Interface Command
o 3mm x 3mm x 0.8mm, 16-Pin TQFN or 14-Pin
TSSOP Packages
o ±1 LSB INL, ±0.5 LSB DNL (Voltage-Divider Mode)
o 256 Tap Positions
o 35ppm/°C End-to-End Resistance Temperature
Coefficient
o 5ppm/°C Ratiometric Temperature Coefficient
o 10k, 50k, and 100k End-to-End Resistance
Values
o SPI-Compatible Serial Interface
o Reliability
200,000 Wiper Store Cycles
50-Year Wiper Data Retention
o +2.7V to +5.25V Single-Supply Operation
MAX5487/MAX5488/MAX5489
Dual, 256-Tap, Nonvolatile, SPI-Interface,
Linear-Taper Digital Potentiometers
________________________________________________________________
Maxim Integrated Products
1
19-3478; Rev 4; 4/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
SPI is a trademark of Motorola, Inc.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
END-TO-END
RESISTANCE (k
)
TOP MARK
MAX5487ETE+
-40°C to +85°C
16 TQFN-EP*
10
ABR
MAX5487EUD+
-40°C to +85°C
14 TSSOP
10
—
*
EP = Exposed pad.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
MAX5487
MAX5488
MAX5489
POR
8-BIT
LATCH
16-BIT
NV RAM
SCLK
DIN
CS
DECODER
8
256
DECODER
256
HA
WA
LA
HB
WB
LB
VDD
GND
SPI
INTERFACE
8-BIT
LATCH
Functional Diagram
15
16
14
13
5
*EP
*EXPOSED PAD.
6
7
DIN
CS
8
V
DD
LB
N.C.
HB
1
+
3
WA
4
12
10
9
HA
I.C.
GND
N.C.
MAX5487
MAX5488
MAX5489
SCLK
W
B
2
11
LA
TQFN
3mm x 3mm
TOP VIEW
Pin Configurations
Pin Configurations continued at end of data sheet.
Ordering Information continued at end of data sheet.
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