MAX5478EUD+ Maxim Integrated Products, MAX5478EUD+ Datasheet - Page 15

• Manufacturer Part Number: MAX5478EUD+
• Description: IC POT DGTL DUAL 256-TAP 14TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5478EUD+

• Taps: 256
• Resistance (ohms): 50K
• Number Of Circuits: 2
• Temperature Coefficient: 35 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Resistance In Ohms: 50K
• Number Of Pots: Dual
• Taps Per Pot: 256
• Resistance: 325 Ohms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire)
• Operating Supply Voltage: 2.7 V to 5.25 V
• Supply Current: 1 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: Dual, 256 Tap, Nonvolatile, I2C, 50k Digital Potentiometer
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 2.7 V
• Tolerance: 25 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 11. Programmable Filter
Figure 13. Adjustable Voltage Reference
TRANSISTOR COUNT: 12,651
PROCESS: BiCMOS
R
WHERE R
AND D = DECIMAL VALUE OF WIPER CODE
V
2
, R
IN
3
= R
HL
HL
MAX6160
HA
= END-TO-END RESISTANCE
x D / 256
GND
5V
IN
OUT
Dual, 256-Tap, Nonvolatile, I
ADJ
MAX5477
MAX5478
MAX5479
R
3
______________________________________________________________________________________
WA
WA
LA
R
HA
LA
Chip Information
C
1/2 MAX5477
1/2 MAX5478
1/2 MAX5479
R
2
V OUT1
LB
HB
MAX410
WB
V+
V-
R
1
V
OUT
MAX6160
GND
IN
OUT
ADJ
WB
Figure 12. Offset Voltage Adjustment Circuit
Digital Potentiometers
TOP VIEW
SDA
V
SCL
DD
A0
R
LB
1
2
3
4
HB
R2
HB
LB
N.C.
16
1/2 MAX5477
1/2 MAX5478
1/2 MAX5479
A1
5
(3mm x 3mm)
3
2
THIN QFN
MAX5477
MAX5478
MAX5479
V
OUT2
HA
15
A2
7
6
5V
MAX410
WB
4
GND
1
WA
14
7
1/2 MAX5477
HA
R1
N.C.
8
13
LA
8
V
V
V
OUT_
OUT_
OUT_
WHERE R = R
AND D = DECIMAL VALUE OF WIPER CODE
WA
12
11
10
2
9
Pin Configurations
= 1.23V x
= 1.23V x
= 1.23V x
R
WHERE R
AND = D DECIMAL VALUE OF WIPER CODE
C-Interface,
2
HB
WB
LB
WP
1/2 MAX5477
= R
6
HL
LA
HL
x D / 256
HL
WA
WB
WP
100kΩ
HA
HB
10kΩ
50kΩ
LA
LB
x D / 256
= END-TO-END RESISTANCE
R
R
R
1
2
3
4
5
6
7
(4.4mm x 5mm)
FOR THE MAX5477
FOR THE MAX5478
FOR THE MAX5479
MAX5477
MAX5478
MAX5479
TSSOP
14
13
12
11
10
9
8
V
SCL
SDA
A0
A1
A2
GND
DD
15