Rainbow Electronics MAX5479 - Manual (Page 3)

MAX5477/MAX5478/MAX5479
Dual, 256-Tap, Nonvolatile, I
2
C-Interface,
Digital Potentiometers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V DD = +2.7V to +5.25V, H_ = V DD , L_ = GND, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V DD = +5V, T A =
+25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGITAL INPUTS
V DD = 3.4V to 5.25V 2.4
Input High Voltage (Note 5) V IH
V DD < 3.4V 0.7 x V DD
V
Input Low Voltage V IL (Note 5) 0.8 V
Output Low Voltage V OL I SINK = 3mA 0.4 V
WP Pullup Resistance I WP 255 k Ω
Input Leakage Current I LEAK ±1 µA
Input Capacitance 5 pF
DYNAMIC CHARACTERISTICS
Crosstalk
HA = 1kHz (0 to V DD ), LA = GND,
LB = GND, measure WB
-80 dB
MAX5478 100
3dB Bandwidth (Note 6)
MAX5479 50
kHz
Total Harmonic Distortion Plus
Noise
THD+N
H_ = 1V RMS , f = 1kHz, L_ = GND,
measure W_
0.003 %
NONVOLATILE MEMORY RELIABILITY
Data Retention T A = +85°C 50 Years
T A = +25°C 200,000
Endurance
T A = +85°C 50,000
Stores
POWER SUPPLY
Power-Supply Voltage V DD 2.70 5.25 V
Writing to EEPROM, digital inputs at
GND or V
DD (Note 7)
250 400
WP = GND 15 20.6
Supply Current I DD
Normal operation, digital
inputs at GND or V
DD WP = V DD 0.5 1
µA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SECTION
MAX5478 500
Wiper Settling Time (Note 10) t WS
MAX5479 1000
ns
DIGITAL SECTION
SCL Clock Frequency f SCL 400 kHz
Setup Time for START Condition t SU:STA 0.6 µs
Hold Time for START Condition t HD:STA 0.6 µs
TIMING CHARACTERISTICS
(V DD = +2.7V to +5.25V, H_ = V DD , L_ = GND, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V DD = +5V,
T A = +25°C. See Figure 1.) (Notes 8 and 9)