AD8400 Analog Devices, AD8400 Datasheet - Page 12

• Manufacturer Part Number: AD8400
• Description: Single-channel Digital Potentiometer
• Manufacturer: Analog Devices

AD8400/AD8402/AD8403
TEST CIRCUITS
V+
I
MS
V+
DUT
A
B
~
W
V
DD
V
W
V+
A
B
V
V
I
A
W
MS
W
NO CONNECT
=
1V/R
V
DUT
A
B
MS
DUT
NOMINAL
A
B
W
W
V+ = V
PSRR (dB) = 20LOG
PSS (%/%) = –––––––
V
V+
WHERE V
MS
AND V
V+ = V
1LSB = V+/256
R
W
DD
V
= ––––––––––––––––––––––––––
MS
V
V
I
W
DD
DD
W2
W2
10%
W1
– [V
= V
∆V
∆V
= V
DD
MS
MS
W1
%
%
MS
WHEN I
+ I
(
I
WHEN I
∆V
W
–––––
∆V
W
(R
MS
DD
W
AW
)
= 1/R
W
II R
= 0
BW
)]
OFFSET
OFFSET
OFFSET
GND
GND
GND
V
IN
DUT
~
B
~
W
A
DUT
V
IN
V
2.5V
2.5V DC
2.5V
DUT
IN
~
I
B
SW
A
A
CODE = ØØ
V
W
R
W
BIAS
DUT
SW
W
B
=
OP279
OP279
OP42
B
0.1V
I
SW
+15V
–15V
+
–
H
A = NC
5V
0.1V
5V
V
V
OUT
OUT
V
OUT