MAX5403EUB Просмотр технического описания (PDF) - Maxim Integrated
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MAX5403EUB Datasheet PDF : 10 Pages
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Dual 256-Tap, Low-Drift,
Digital Potentiometers in 10-µMAX
ADDRESS
B0 (A0)
B1 (D7)
(MSB)
First Bit In
Figure 4. Serial Data Format
B2 (D6)
B3 (D5)
DATA WORD
B4 (D4)
B5 (D3)
B6 (D2)
B7 (D1)
B8 (D0)
(LSB)
Last Bit In
R3
WA
MAX5403
MAX5404
R1
R2
MAX5405
LA
+5V
V0
MAX4250
V0 / IS = R3 (1 + R2/R1) + R2
Figure 5. I to V Converter
VCC
VIN
VOUT
WB
HB
LB
MAX5403
MAX5404
MAX5405
Figure 6b. Adjustable Gain Circuit Using: 3-Terminal
Potentiometer
Adjustable Voltage Reference
In Figure 7a, the MAX5403/MAX5404/MAX5405 is
shown with the MAX6160 to make an adjustable volt-
age reference. In this circuit, the HX pin of the
MAX5403/MAX5404/MAX5405 is connected to the OUT
pin of the MAX6160, the LX pin of the MAX5403/
MAX5404/MAX5405 is connected to GND, and the WX
VCC
VOUT
WA
MAX5403
MAX5404
MAX5405
LA
Figure 6a. Adjustable Gain Circuit Using: 2-Terminal Variable
Resistor
+5V
VIN
OUT
MAX6160
ADJ WB
GND
VOREF
HB
VOREF = 12.3kV ✕ Ω / (100kΩ ✕ C / 255) for MAX5403
VOREF = 61.5kV ✕ Ω / (50kΩ ✕ C / 255) for MAX5404
VOREF = 123kV ✕ Ω / (100kΩ ✕ C / 255) for MAX5405
WHERE C IS ANY CODE BEING WRITTEN TO A DEVICE.
LB
Figure 7a. Adjustable Voltage Reference Using: 3-Terminal
Potentiometer
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.
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