AD8400AN10 Analog Devices, AD8400AN10 Datasheet - Page 11

• Manufacturer Part Number: AD8400AN10
• Description: 1-/2-/4-Channel Digital Potentiometers
• Manufacturer: Analog Devices

Figure 30. Resistor Position Nonlinearity Error (Rheostat
Operation; R-INL, R-DNL)
REV. B
Figure 32. Power Supply Sensitivity Test Circuit (PSS,
PSRR)
Figure 29. Potentiometer Divider Nonlinearity Error Test
Circuit (INL, DNL)
V+
I
MS
V+
DUT
A
B
Figure 31. Wiper Resistance Test Circuit
~
W
V
DD
V
V+
W
B
A
V
V
I
A
NO CONNECT
W
MS
W
=
1V/R
V
DUT
A
B
DUT
A
B
MS
NOMINAL
W
W
V
V+ = V
PSRR (dB) = 20LOG
PSS (%/%) = –––––––
MS
V+
WHERE V
V+ = V
1LSB = V+/256
AND V
R
W
V
DD
I
MS
= ––––––––––––––––––––––––––
W
V
V
DD
DD
W2
W2
10%
W1
= V
– [V
V
V
= V
MS
MS
DD
W1
Parametric Test Circuits–AD8400/AD8402/AD8403
MS
%
%
WHEN I
+ I
(
WHEN I
I
–––––
W
W
V
V
(R
MS
DD
W
AW
= 1/R
)
W
II R
= 0
BW
)]
–11–
Figure 33. Inverting Programmable Gain Test Circuit
Figure 34. Noninverting Programmable Gain Test Circuit
Figure 36. Incremental ON Resistance Test Circuit
Figure 35. Gain vs. Frequency Test Circuit
OFFSET
OFFSET
OFFSET
GND
GND
GND
V
IN
DUT
~
B
~
DUT
W
A
V
IN
V
2.5V
2.5V DC
2.5V
IN
DUT
~
B
A
I
A
SW
W
CODE = ØØ
0 toV
W
R
DUT
W
SW
B
DD
=
OP279
OP279
B
OP42
0.1V
+15V
–15V
I
SW
H
+5V
+5V
0.1V
V
V
OUT
OUT
V
OUT