AD7376AN50 AD [Analog Devices], AD7376AN50 Datasheet - Page 7

• Manufacturer Part Number: AD7376AN50
• Description: +-15 V Operation Digital Potentiometer
• Manufacturer: AD [Analog Devices]

Figure 31. Potentiometer Divider Nonlinearity Error Test
Circuit (INL, DNL)
Figure 32. Resistor Position Nonlinearity Error (Rheostat
Operation; R-INL, R-DNL)
REV. 0
PARAMETRIC TEST CIRCUITS
Figure 30. Supply Current (I
Figure 29. Input Logic Threshold Voltage vs.
V
DD
Supply Voltage
1600
1200
V+
800
400
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
5
0
DUT
NO CONNECT
DUT
SUPPLY VOLTAGE (V
A
B
10
V
V
DD
SS
A
B
W
W
= 0V OR –5V
= +5V
5
15
V
LOGIC
V
V
V
V+ = V
1LSB = V+/128
DD
SS
V
V
V
MS
A
B
SS
= –15V
= +15V
DD
20
= +5V
= 0V
I
= 0V
W
DD
V
) vs. Logic Voltage
DD
10
MS
) – Volts
25
30
15
–7–
Figure 36. Noninverting Programmable Gain Test Circuit
Figure 35. Inverting Programmable Gain Test Circuit
V+
Figure 34. Power Supply Sensitivity Test Circuit
(PSS, PSRR)
V+
Figure 37. Gain vs. Frequency Test Circuit
I
Figure 33. Wiper Resistance Test Circuit
MS
DUT
V
IN
V
V
DD
IN
A
B
V
A
V
IN
W
A
A
B
DUT
A
W
DUT
W
V
DUT
W
B
A
V
V
MS
I
W
B
W
MS
W
= 1V/R
OP275
B
OP275
+18V
–18V
OP275
+18V
–18V
R
WHERE V
AND V
V+
NOMINAL
PSRR (dB) = 20LOG
PSS (%/%) =
W
V+ = V
+18V
–18V
=
V
V
W2
W2
DD
DD
= V
W1
- (V
MS
= V
10% OR V
W1
V
V
WHEN I
MS
OUT
V+%
+ I
MS
V
I
W
OUT
W
WHEN I
V
%
AD7376
OUT
[R
(
SS
AW
W
V
V+
= 1/R
MS
||
W
R
10%
(
= 0
BW
])