MAX5478EUD+ Maxim Integrated Products, MAX5478EUD+ Datasheet - Page 5

• 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

(V
DD
1.0
0.8
0.6
0.4
0.2
= +5V, H_ = V
0
-40
TAP-TO-TAP SWITCHING TRANSIENT
WIPER TRANSIENT AT POWER-ON
vs. TEMPERATURE (MAX5477)
V
CC
-15
= 3V
SUPPLY CURRENT
TEMPERATURE (°C)
Dual, 256-Tap, Nonvolatile, I
DD
10
_______________________________________________________________________________________
2µs/div
200ns/div
, L_ = GND, T
MAX5477
C
H_ = V
FROM TAP 00 TO TAP 04
L
V
= 10pF
CC
35
DD
= 5V
MAX5477/78/79 toc06
MAX5477/78/79 toc03
MAX5477
TAP = 128
WP = V
60
A
DD
= +25°C, unless otherwise noted.)
85
V
2V/div
W_
1V/div
SDA
2V/div
W_
50mV/div
DD
15
13
11
9
7
5
-40
TAP-TO-TAP SWITCHING TRANSIENT
WIPER TRANSIENT AT POWER-ON
V
V
CC
CC
-15
= 3V
= 5V
vs. TEMPERATURE
SUPPLY CURRENT
TEMPERATURE (°C)
10
1µs/div
4µs/div
MAX5478
C
H_ = V
FROM TAP 00 TO TAP 04
L
= 10pF
Digital Potentiometers
Typical Operating Characteristics
35
DD
MAX5477/78/79 toc04
MAX5477/78/79 toc07
MAX5478
TAP = 128
WP = GND
60
85
SDA
2V/div
W_
20mV/div
V
2V/div
W_
1V/div
DD
500
450
400
350
300
250
200
150
100
50
0
0
TAP-TO-TAP SWITCHING TRANSIENT
2
WIPER TRANSIENT AT POWER-ON
C-Interface,
32
64
WIPER RESISTANCE
vs. INPUT CODE
96
INPUT CODE
400ns/div
2µs/div
MAX5479
C
H_ = V
FROM TAP 00 TO TAP 04
128 160 192 224 256
W_
= 10pF
DD
MAX5479
TAP = 128
MAX5477/78/79 toc05
MAX5477/78/79 toc08
SDA
2V/div
W_
20mV/div
V
2V/div
W_
1V/div
DD
5