MAX5495 查看數據表（PDF） - Maxim Integrated
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MAX5495 Datasheet PDF : 20 Pages
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10-Bit, Dual, Nonvolatile, Linear-Taper
Digital Potentiometers
TIMING CHARACTERISTICS
(VDD = +2.7V to +5.25V, VSS = GND = 0, VH_ = VDD, VL_ = 0, TA = -40°C to +85°C, unless otherwise noted. Typical values are at
VDD = +5.0V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
ANALOG SECTION
Wiper Settling Time (Note 6)
MAX5494/MAX5498
tS
MAX5495/MAX5499
SPI-COMPATIBLE SERIAL INTERFACE (Figure 6)
SCLK Frequency
SCLK Clock Period
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS Fall to SCLK Rise Setup
SCLK Rise to CS Rise Hold
DIN to SCLK Setup
DIN Hold After SCLK
SCLK Rise to CS Fall Delay
CS Rise to SCLK Rise Hold
CS Pulse-Width High
Write NV Register Busy Time
fSCLK
tCP
tCH
tCL
tCSS
tCSH
tDS
tDH
tCS0
tCS1
tCSW
tBUSY
MIN TYP MAX UNITS
5
µs
22
7
MHz
140
ns
60
ns
60
ns
60
ns
0
ns
40
ns
0
ns
15
ns
60
ns
150
ns
12
ms
Note 1: 100% production tested at TA = +25°C and TA = +85°C. Guaranteed by design to TA = -40°C.
Note 2: The DNL and INL are measured for the voltage-divider with H_ = VDD and L_ = VSS. The wiper terminal (W_) is unloaded
and measured with a high-input-impedance voltmeter.
Note 3: The DNL and INL are measured with L_ = VSS = 0. For VDD = 5V, the wiper terminal is driven with a current source of IW =
80µA for the 50kΩ device and IW = 400µA for the 10kΩ device. For VDD = 3V, the wiper terminal is driven with a current
source of IW = 40µA for the 50kΩ device and IW = 200µA for the 10kΩ device.
Note 4: The wiper resistance is measured using the source currents given in Note 3.
Note 5: The device draws higher supply current when the digital inputs are driven with voltages between (VDD - 0.5V) and (GND +
0.5V). See the Supply Current vs. Digital Input Voltage graph in the Typical Operating Characteristics.
Note 6: Wiper settling test condition uses the voltage-divider with a 10pF load on W_. Transition code from 0 to 495 and measure
the time from CS going high to the wiper voltage settling to within 0.5% of its final value.
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