Datasheet

MAX1407/MAX1408/MAX1409/MAX1414
Low-Power, 16-Bit Multichannel DAS with
Internal Reference,10-Bit DACs, and RTC
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Table 11. Unipolar Code Table
DAC CONTENTS
MSB LSB
ANALOG OUTPUT
1111 1111 11 +V
REF
(1023/1024)
1000 0000 01 +V
REF
(513/1024)
1000 0000 00 +V
REF
(512/1024) = +V
REF
/2
0111 1111 11 +V
REF
(511/1024)
0000 0000 01 +V
REF
(1/1024)
0000 0000 00 0
Table 12. Bipolar Code Table
DAC CONTENTS
MSB LSB
ANALOG OUTPUT
1111 1111 11 +V
REF
(511/512)
1000 0000 01 +V
REF
(1/512)
1000 0000 00 0
0111 1111 11 -V
REF
(1/512)
0000 0000 01 -V
REF
(511/512)
0000 0000 00 -V
REF
(512/512) = -V
REF
Figure 19. Power-Supply Circuit Using MAX1833 Step-Up DC-DC Converter
MAX1407
MAX1408
MAX1414
MAX1833
LX
IN0
10µF
10µF
10µH
V
DD
= 3.3V OR V
BAT
0.1µF 0.1µF
0.1µF
18nF
RESET RESET
µP/µC
V
BAT
BATT
E1*
OUT
RST
SHDN
GND
CPLL
AGND DGND
AV
DD
DV
DD
V
DD
V
SS
SHDN
*ONE Li+ COIN, TWO ALKALINE, OR TWO BUTTON CELLS
INPUTWU1
Figure 20. Power-Supply Circuit Using MAX1759 Buck-Boost DC-DC Converter
MAX1407
MAX1408
MAX1414
MAX1759
IN
IN0
10µF
10µF
0.33µF
V
DD
= 3.3V
0.1µF 0.1µF
0.1µF
18nF
RESET RESET
µP/µC
V
BAT
E1*
OUT
POK
SHDN
GNDFB PGND
CXN CXP
CPLL
AGND DGND
AV
DD
DV
DD
V
DD
V
SS
SHDN
*ONE Li+ COIN, ONE Li+, 2-3 ALKALINE, 2-3 NIMH, OR 2-3 BUTTON CELLS
INPUTWU1
R
R