MAX5403-MAX5405 MAXIM [Maxim Integrated Products], MAX5403-MAX5405 Datasheet - Page 9

• Manufacturer Part Number: MAX5403-MAX5405
• Description: Dual 256-Tap, Low-Drift, Digital Potentiometers in 10-?MAX
• Manufacturer: MAXIM [Maxim Integrated Products]

In
shown with the MAX6160 to make an adjustable volt-
age reference. In this circuit, the H
MAX5403/MAX5404/MAX5405 is connected to the OUT
pin of the MAX6160, the L
MAX5404/MAX5405 is connected to GND, and the W
Figure 4. Serial Data Format
Figure 5. I to V Converter
Figure 6b. Adjustable Gain Circuit Using: 3-Terminal
Potentiometer
ADDRESS
First Bit In
Figure 7a, the MAX5403/MAX5404/MAX5405 is
B0 (A0)
(MSB)
L
B1 (D7)
B
Adjustable Voltage Reference
V
_______________________________________________________________________________________
V
IN
MAX5403
MAX5404
MAX5405
0
/ I
MAX5403
MAX5404
MAX5405
S
= R
R3
W
3
(1 + R
B
2
+5V
/R
B2 (D6)
X
1
) + R
H
B
Digital Potentiometers in 10-µMAX
pin of the MAX5403/
V
CC
2
W
MAX4250
R1
A
L
A
V
0
R2
X
B3 (D5)
V
OUT
pin of the
DATA WORD
X
B4 (D4)
Dual 256-Tap, Low-Drift,
pin of the MAX5403/MAX5404/MAX5405 is connected
to the ADJ pin of the MAX6160. The MAX5403/
MAX5404/MAX5405 allow precise setting of the voltage
reference output. A low 5ppm/°C ratiometric tempco
allows a very stable, adjustable voltage over tempera-
ture.
Figure 6a. Adjustable Gain Circuit Using: 2-Terminal Variable
Resistor
Figure 7a. Adjustable Voltage Reference Using: 3-Terminal
Potentiometer
MAX6160
+5V
GND
VIN
B5 (D3)
OUT
ADJ
W
B
L
W
B6 (D2)
A
A
H
L
B
B
V
V
V
V
WHERE C IS ANY CODE BEING WRITTEN TO A DEVICE.
O
O
O
O
REF
REF = 12.3kV
REF = 61.5kV
REF = 123kV
MAX5403
MAX5404
MAX5405
V
CC
✕
B7 (D1)
✕
✕
Ω / (100kΩ
Ω / (100kΩ
Ω / (50kΩ
V
OUT
✕
✕
✕
C / 255) for MAX5404
C / 255) for MAX5405
C / 255) for MAX5403
Last Bit In
B8 (D0)
(LSB)
9