MAX1228BCEP+ Maxim Integrated Products, MAX1228BCEP+ Datasheet - Page 18

• Manufacturer Part Number: MAX1228BCEP+
• Description: IC ADC 12-BIT 300KSPS 20-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1228BCEP+

• Number Of Bits: 12
• Sampling Rate (per Second): 300k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 727mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Initiate a scan by writing a byte to the conversion regis-
ter. The MAX1226/MAX1228/MAX1230 then power up,
scan all requested channels, store the results in the
FIFO, and shut down. After the scan is complete, EOC
is pulled low and the results are available in the FIFO. If
a temperature measurement is requested, the tempera-
ture result precedes all other FIFO results. EOC stays
low until CS is pulled low again.
12-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
Figure 5. Clock Mode 01
18
Figure 6. Clock Mode 10
CNVST
SCLK
DOUT
EOC
DIN
CS
SCLK
DOUT
EOC
CS
______________________________________________________________________________________
(ACQUISITION1)
THE CONVERSION BYTE BEGINS THE ACQUISITION. CNVST IS NOT REQUIRED.
REQUEST MULTIPLE CONVERSIONS BY SETTING CNVST LOW FOR EACH CONVERSION.
(CONVERSION1)
(ACQUISITION2)
(CONVERSION BYTE)
(CONVERSION2)
(UP TO 514 INTERNALLY CLOCKED ACQUISITIONS AND CONVERSIONS)
MSB1
MSB1
In clock mode 11, acquisitions and conversions are ini-
tiated by writing to the conversion register and are per-
formed one at a time using the SCLK as the conversion
clock. Scanning and averaging are disabled, and the
conversion result is available at DOUT during the con-
version. See Figure 7 for clock mode 11 timing.
Conversions Using the Serial Interface
Externally Clocked Acquisitions and
Performing Conversions in Clock Mode 11
LSB1
LSB1
MSB2
MSB2