max5423eta Maxim Integrated Products, Inc., max5423eta Datasheet - Page 4

• Manufacturer Part Number: max5423eta
• Description: 256-tap, Nonvolatile, Spi-interface, Digital Potentiometers
• Manufacturer: Maxim Integrated Products, Inc.

256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
TIMING CHARACTERISTICS (continued)
(V
noted. See Figure 1.) (Note 7)
Note 1: The DNL and INL are measured with the potentiometer configured as a voltage-divider with H = V
Note 2: The DNL and INL are measured with the potentiometer configured as a variable resistor. H is unconnected and L = GND.
Note 3: The wiper resistance is measured using the source currents given in Note 2. For operation to V
Note 4: The device draws higher supply current when the digital inputs are driven with voltages between (V
Note 5: Wiper at midscale with a 10pF load (DC measurement). L = GND; an AC source is applied to H; and the W output is mea-
Note 6: The programming current operates only during power-up and NV writes.
Note 7: Digital timing is guaranteed by design and characterization, and is not production tested.
Note 8: Wiper-settling time is the worst-case 0% to 50% rise-time measured between consecutive wiper positions. H = V
4
(V
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
DD
-0.05
-0.10
-0.15
-0.20
-0.25
DD
0.25
0.20
0.15
0.10
0.05
_______________________________________________________________________________________
0
= +2.7V to +5.25V, H = V
= 5.0V, T
0
wiper terminal is unloaded and measured with a high-input-impedance voltmeter.
For the 5V condition, the wiper terminal is driven with a source current of 80µA for the 50kΩ configuration, 40µA for the
100kΩ configuration, and 20µA for the 200kΩ configuration. For the 3V condition, the wiper terminal is driven with a source
current of 40µA for the 50kΩ configuration, 20µA for the 100kΩ, and 10µA for the 200kΩ configuration.
Wiper Resistance vs. Temperature in the Typical Operating Characteristics .
0.5V). See Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics .
sured. A 3dB bandwidth occurs when the AC W/H value is 3dB lower than the DC W/H value.
GND, and the wiper terminal is unloaded and measured with a 10pF oscilloscope probe.
VOLTAGE-DIVIDER MODE
PARAMETER
32
DNL vs. TAP POSITION
64
A
= +25°C, unless otherwise noted.)
96
TAP POSITION
128 160
192
DD
, L = GND, T
224
SYMBOL
256
t
t
t
t
BUSY
CSW
t
CS0
CS1
DH
A
-0.05
-0.10
-0.15
-0.20
-0.25
0.25
0.20
0.15
0.10
0.05
= -40°C to +85°C. Typical values are at V
0
0
VOLTAGE-DIVIDER MODE
32
INL vs. TAP POSITION
64
96
TAP POSITION
CONDITIONS
128 160
Typical Operating Characteristics
192
224
256
DD
= +5.0V, T
700
600
500
400
300
200
100
0
MIN
200
0
20
80
WIPER RESISTANCE vs. TAP POSITION
0
V
I
SRC
DD
32
= 2.7V
DD
= 50µA
A
DD
64
= +25°C, unless otherwise
TYP
= 2.7V, see Maximum
DD
and L = GND. The
96
TAP POSITION
- 0.5V) and (GND +
128 160
MAX
12
DD
192
, L =
UNITS
ms
ns
ns
ns
ns
224
256