MAX5478EUD Maxim Integrated Products, MAX5478EUD Datasheet - Page 9
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MAX5478EUD
Manufacturer Part Number
MAX5478EUD
Description
Digital Potentiometer ICs
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5477ETE.pdf
(17 pages)
Specifications of MAX5478EUD
Number Of Pots
Dual
Taps Per Pot
256
Resistance
50 KOhms
Wiper Memory
Non Volatile
Digital Interface
Serial (2-Wire, I2C)
Operating Supply Voltage
5 V
Supply Current
15 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (max)
5.25 V
Supply Voltage (min)
2.7 V
Package / Case
TSSOP-14
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX5478EUD
Manufacturer:
MAXIM
Quantity:
17
Company:
Part Number:
MAX5478EUD
Manufacturer:
MAXIM
Quantity:
36
Part Number:
MAX5478EUD
Manufacturer:
MAXIM/美信
Quantity:
20 000
Figure 1. I
TSSOP
10
11
12
13
14
—
—
1
2
3
4
5
6
7
8
9
SDA
SCL
2
PIN
C Serial-Interface Timing Diagram
t
HD:STA
THIN QFN
PARAMETERS ARE MEASURED FROM 30% TO 70%.
CONDITION
8, 16
15
14
13
12
11
10
EP
START
9
7
6
5
4
3
2
1
(S)
Dual, 256-Tap, Nonvolatile, I
_______________________________________________________________________________________
t
SU:DAT
NAME
GND
SDA
N.C.
t
SCL
V
LOW
WA
WB
WP
HA
HB
LA
LB
A2
A1
A0
EP
DD
t
R
Potentiometer A High Terminal
Potentiometer A Wiper Terminal
Potentiometer A Low Terminal
Potentiometer B High Terminal
Potentiometer B Wiper Terminal
Potentiometer B Low Terminal
Write-Protect Input. Connect to GND to allow changes to the wiper position and the data stored
in the EEPROM. Connect to V
EEPROM. See the Write Protect (WP) section for operating instructions.
Ground
Address Input 2. Connect to V
Address Input 1. Connect to V
Address Input 0. Connect to V
I 2 C Serial Data
I 2 C Clock Input
Power-Supply Input. Connect a +2.7V to +5.25V power supply to V
with a 0.1µF capacitor installed as close to the device as possible.
No Connection. Do not connect.
Exposed Paddle. Do not connect.
t
HIGH
t
F
t
HD:DAT
t
SU:STA
DD
REPEATED START
DD
DD
DD
CONDITION
or leave unconnected to enable the write protection of the
(SR)
or GND (see Table 1).
or GND (see Table 1).
or GND (see Table 1).
Digital Potentiometers
t
HD:STA
FUNCTION
ACKNOWLEDGE
(A)
t
SU:STO
2
C-Interface,
DD
CONDITION
Pin Description
STOP
and bypass V
(P)
t
BUF
CONDITION
START
(S)
DD
to GND
9