參數(shù)資料
型號(hào)： MAX5531ETC
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： DAC
英文描述： ULTRA-LOW POWER, 12-BIT, VOLTAGE-OUTPUT DACS
中文描述： SERIAL INPUT LOADING, 660 us SETTLING TIME, 12-BIT DAC, QCC12
封裝： 4 X 4 MM, 0.80 MM HEIGHT, MO-220, QFN-12
文件頁數(shù)： 17/19頁
文件大?。?/td> 1015K
代理商： MAX5531ETC
M
Ultra-Low-Power, 12-Bit,
Voltage-Output DACs
______________________________________________________________________________________
17
R
2N3904
N
DAC
IS THE NUMERIC VALUE OF THE DAC INPUT CODE.
I
LED
REFIN
LED
MAX5530
V+
DAC
VOUT
LED
= V
REFIN
×
N
DAC
I
×
R
FB
Figure 4. Programmable Current Source Driving an LED
DAC
BAND
GAP
TO ADC
OUT
REFOUT
MAX5531
TO ADC
TO ADC
FB
WE
SENSOR
CE
I
F
R
F
C
L
REF
Figure 6. Self-Biased Two-Electrode Potentiostat Application
R
FB
N
DAC
IS THE NUMERIC VALUE
OF THE DAC INPUT CODE.
I
T
REFIN
MAX5530
VOUT
V
OUT
= V
BIAS
+ (I
T
×
R)
V
OUT
V
BIAS
TRANSDUCER
BIAS
= V
REFIN
×
N
DAC
V
DAC
Figure 5. Transimpedance Configuration for a Voltage-Biased
Current-Output Transducer
N
A
IS THE DAC INPUT CODE
(0 TO 4095 DECIMAL).
REFIN
MAX5530
OUT
FB
OUT
= V
REFIN
×
N
A
V
DAC
Figure 7. Unipolar Output Circuit
DAC CONTENTS
MSB
1111
1111
1000
0000
1000
0000
0111
1111
0000
0001
0000
0000
LSB
1100
0001
0000
1111
0001
0000
ANALOG OUTPUT
+V
REF
(4095/4096)
+V
REF
(2049/4096)
+V
REF
(2048/4096) = +V
REF
/ 2
+V
REF
(2047/4096)
+V
REF
(1/4096)
0V
Table 4. Unipolar Code Table (Gain = +1)
DAC CONTENTS
MSB
LSB
1111
0001
0000
1111
0001
0000
ANALOG OUTPUT
1111
1000
1000
0111
0000
0000
1111
0000
0000
1111
0000
0000
+V
REF
(2047/2048)
+V
REF
(1/2048)
0V
-V
REF
(1/2048)
-V
REF
(2047/2048)
-V
REF
(2048/2048) = -V
REF
Table 5. Bipolar Code Table (Gain = +1)
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