
MAX1240/MAX1241
+2.7V, Low-Power,
12-Bit Serial ADCs in 8-Pin SO
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13
HIGH-Z
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
tCONV
DOUT*
CS
SCLK
1ST BYTE READ
2ND BYTE READ
EOC
MSB
LSB
*WHEN CS IS HIGH, DOUT = HIGH -Z
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
tCONV
DOUT*
CS
SCLK
EOC
MSB
LSB
HIGH-Z
*WHEN CS IS HIGH, DOUT = HIGH -Z
Figure 12. SPI/MICROWIRE Serial Interface Timing (CPOL = CPHA = 0)
Figure 13. QSPI Serial Interface Timing (CPOL = CPHA = 0)
SUPPLIES
+3V
GND
DGND
+3V
DIGITAL
CIRCUITRY
GND
VDD
MAX1240
MAX1241
*OPTIONAL
R* = 10
Ω
4.7
μF
0.1
μF
Figure 14. Power-Supply Grounding Condition