MAX1228BCEP-T Maxim Integrated, MAX1228BCEP-T Datasheet - Page 9

• Manufacturer Part Number: MAX1228BCEP-T
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1228BCEP-T

• Number Of Channels: 12/6
• Architecture: SAR
• Conversion Rate: 300 KSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Differential
• Snr: 70 dB
• Interface Type: QSPI, Serial (SPI, Microwire)
• Operating Supply Voltage: 4.75 V to 5.25 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-20
• Maximum Power Dissipation: 727 mW
• Minimum Operating Temperature: 0 C
• Number Of Converters: 1
• Voltage Reference: 4.096 V

Figure 1. Detailed Serial-Interface Timing Diagram
Figure 2. Functional Diagram
The MAX1226/MAX1228/MAX1230 are low-power, seri-
al-output, multichannel ADCs with temperature-sensing
capability for temperature-control, process-control, and
monitoring applications. These 12-bit ADCs have inter-
nal track and hold (T/H) circuitry that supports single-
ended and fully differential inputs. Data is converted
from an internal temperature sensor or analog voltage
sources in a variety of channel and data-acquisition
DOUT
SCLK
DIN
CS
_______________________________________________________________________________________
Detailed Description
t
CSS0
t
DS
t
DOE
CNVST
AIN15
SCLK
t
REF+
AIN1
AIN2
REF-
DH
DIN
CS
Temp Sensor, Internal Reference
12-Bit 300ksps ADCs with FIFO,
OSCILLATOR
t
MAX1226
MAX1228
MAX1230
CH
SENSE
TEMP
MUX
CONTROL
t
DOT
12-BIT
ADC
SAR
configurations. Microprocessor (µP) control is made
easy through a 3-wire SPI/QSPI/MICROWIRE-compati-
ble serial interface.
Figure 2 shows a simplified functional diagram of the
MAX1226/MAX1228/MAX1230 internal architecture.
The MAX1226 has eight single-ended analog input
channels or four differential channels. The MAX1228
has 12 single-ended analog input channels or six differ-
ential channels. The MAX1230 has 16 single-ended
analog input channels or eight differential channels.
SERIAL INTERFACE
t
CP
REFERENCE
INTERNAL
ACCUMULATOR
FIFO AND
EOC
DOUT
t
CSH1
t
CSH0
t
t
CSS1
DOD
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