Datasheet

MAX5494–MAX5499
10-Bit, Dual, Nonvolatile, Linear-Taper
Digital Potentiometers
_______________________________________________________________________________________ 5
TIMING CHARACTERISTICS
(V
DD
= +2.7V to +5.25V, V
SS
= GND = 0, V
H_
= V
DD
, V
L_
= 0, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at
V
DD
= +5.0V, T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SECTION
MAX5494/MAX5498 5
Wiper Settling Time (Note 6) t
S
MAX5495/MAX5499 22
µs
SPI-COMPATIBLE SERIAL INTERFACE (Figure 6)
SCLK Frequency f
SCLK
7 MHz
SCLK Clock Period t
CP
140 ns
SCLK Pulse-Width High t
CH
60 ns
SCLK Pulse-Width Low t
CL
60 ns
CS Fall to SCLK Rise Setup t
CSS
60 ns
SCLK Rise to CS Rise Hold t
CSH
0ns
DIN to SCLK Setup t
DS
40 ns
DIN Hold After SCLK t
DH
0ns
SCLK Rise to CS Fall Delay t
CS0
15 ns
CS Rise to SCLK Rise Hold t
CS1
60 ns
CS Pulse-Width High t
CSW
150 ns
Write NV Register Busy Time t
BUSY
12 ms
Note 1: 100% production tested at T
A
= +25°C and T
A
= +85°C. Guaranteed by design to T
A
= -40°C.
Note 2: The DNL and INL are measured for the voltage-divider with H_ = V
DD
and L_ = V
SS
. The wiper terminal (W_) is unloaded
and measured with a high-input-impedance voltmeter.
Note 3: The DNL and INL are measured with L_ = V
SS
= 0. For V
DD
= 5V, the wiper terminal is driven with a current source of I
W
=
80µA for the 50kΩ device and I
W
= 400µA for the 10kΩ device. For V
DD
= 3V, the wiper terminal is driven with a current
source of I
W
= 40µA for the 50kΩ device and I
W
= 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 (V
DD
- 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.