Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper
positions. R-DNL measures the relative step change from ideal between successive tap positions.
3
INL and DNL are measured at V
W
with the RDAC configured as a potentiometer divider similar to a voltage output D/A converter. V
A
= V
DD
and V
B
= 0 V.
4
Resistor Terminals A, B, W have no limitations on polarity with respect to each other.
5
Guaranteed by design and not subject to production test.
6
P
DISS
is calculated from (I
DD
× V
DD
). CMOS logic level inputs result in minimum power dissipation.
7
All dynamic characteristics use V
DD
= 5 V.
8
Bandwidth, noise, and settling time are dependent on the terminal resistance value chosen. The lowest R value results in the fastest settling time and highest
bandwidth. The highest R value results in the minimum overall power consumption.
9
See the timing diagram for location of measured values.
10
Endurance is qualified to 100,000 cycles as per JEDEC Std. 22 method A117 and measured at −40°C, +25°C, and +85°C, typical endurance at 25°C is 700,000 cycles.
11
Retention lifetime equivalent at junction temperature (T
J
) = 55°C as per JEDEC Std. 22, Method A117. Retention lifetime based on an activation energy of 0.6eV
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Test/Measurement
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