MAX5450 データシートの表示（PDF） - Maxim Integrated
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MAX5450 Datasheet PDF : 12 Pages
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Dual, 256-Tap, Up/Down Interface,
Digital Potentiometers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +5.5V, VH = VDD, VL = 0; TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = +5V, TA = +25°C,
unless otherwise noted.)
PARAMETER
SYM B O L
CONDITIONS
DIGITAL INPUTS (Note 5)
Input High Voltage
VIH
Input Low Voltage
VIL
Input Leakage Current
Input Capacitance
TIMING CHARACTERISTICS (Analog)
Wiper-Settling Time
(Note 6)
MAX5451
tIW
MAX5453
MAX5455
TIMING CHARACTERISTICS (Digital, Note 7, Figure 1)
Maximum INC Frequency
CS to INC Setup Time
CS to INC Hold Time
INC Low Period
INC High Period
U/D to INC Setup
U/D to INC Hold
fMAX
tCI
tIC
tIL
tIH
tDI
tID
POWER SUPPLIES
Supply Voltage
VDD
Supply Current
IDD
CS = INC = U/D = VDD
or GND
VDD = +5V
VDD = +2.7V
MIN TYP MAX UNITS
0.7 x VDD
V
0.3 x VDD
V
±1.0
µA
5
pF
0.5
1.2
µs
1.8
7
MHz
25
ns
0
ns
25
ns
25
ns
50
ns
0
ns
2.7
5.5
V
0.7
2
µA
0.1
Note 1: Linearity is defined in terms of the H_ to L_ code-dependent resistance.
Note 2: The DNL and INL are measured with the potentiometer configured as a voltage divider with H_ = VDD and L_ = GND. The
wiper terminal is unloaded and measured with an ideal voltmeter.
Note 3: The DNL and INL are measured with the potentiometer configured as a variable resistor. For the 3-terminal potentiometers
(MAX5451/MAX5453/MAX5455), H_ is unconnected and L_ = GND. For the 2-terminal potentiometers
(MAX5450/MAX5452/MAX5454), L_ = GND. At VDD = +5V, the wiper terminal is driven with a source current of 400µA for the
10kΩ configuration, 80µA for the 50kΩ configuration, and 40µA for the 100kΩ configuration. At VDD = +3V,
200µA/40µA/20µA for 10kΩ/50kΩ/100kΩ configuration, respectively.
Note 4: The wiper resistance is the worst value measured by injecting the currents given in Note 3 into W_ with L_ = GND. RW_ =
(VW_ - VH_) / IW_.
Note 5: Device draws higher supply current when digital inputs are driven with voltages between 0.3 x VDD and 0.7 x VDD. (See
Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics.)
Note 6: Wiper-Settling Time is the worst case 0% to 50% rise-time measured between consecutive wiper positions. H_ = VDD, L_ =
GND, and the wiper terminal is unloaded and measured with a 10pF oscilloscope probe (see Tap-To-Tap Switching
Transient in the Typical Operating Characteristics).
Note 7: Digital timing is guaranteed by design.
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