MAX1246BEEE-T Maxim Integrated, MAX1246BEEE-T Datasheet - Page 17

• Manufacturer Part Number: MAX1246BEEE-T
• Description: Analog to Digital Converters - ADC 12-Bit 4Ch 133ksps 3.6V Precision ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1246BEEE-T

• Number Of Channels: 4/2
• Architecture: SAR
• Conversion Rate: 133 KSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Differential
• Snr: 70 dB
• Interface Type: 4-Wire (SPI, Microwire, QSPI, TMS320)
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Maximum Power Dissipation: 667 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: 2.5 V

determines clock mode and power-down states. For
example, if the DIN word contains PD1 = 1, then the
chip remains powered up. If PD0 = PD1 = 0, a
power-down resumes after one conversion.
Pulling SHDN low places the converter in hardware
power-down (Table 6). Unlike software power-down
mode, the conversion is not completed; it stops coin-
cidentally with SHDN being brought low. SHDN also
Figure 11a. Timing Diagram Power-Down Modes, External Clock
Figure 11b. Timing Diagram Power-Down Modes, Internal Clock
CLOCK
MODE
MODE
SHDN
DOUT
CLOCK
MODE
SSTRB
MODE
DOUT
DIN
DIN
S X X X X X 1 1
S X X X X X 1 0
______________________________________________________________________________________
SETS EXTERNAL
CLOCK MODE
SETS INTERNAL
CLOCK MODE
CONVERSION
12 DATA BITS
POWERED UP
Hardware Power-Down
POWERED UP
EXTERNAL
Serial 12-Bit ADCs in QSOP-16
DATA VALID
S
+2.7V, Low-Power, 4-Channel,
X
X
X
X
X
0 0
INTERNAL
SETS SOFTWARE
POWER-DOWN
S
X
X
12 DATA BITS
X
controls the clock frequency in internal clock mode.
Letting SHDN float sets the internal clock frequency to
1.8MHz. When returning to normal operation with SHDN
floating, there is a t
where C
Pulling SHDN high sets internal clock frequency to
225kHz. This feature eases the settling-time requirement
for the reference voltage. With an external reference, the
MAX1246/MAX1247 can be considered fully powered up
within 2µs of actively pulling SHDN high.
X
X
0 0
SETS
POWER-DOWN
POWER-DOWN
L
CONVERSION
SOFTWARE
is the capacitive loading on the SHDN pin.
SETS EXTERNAL
CLOCK MODE
S
X X X X X
POWERED UP
RC
delay of approximately 2MΩ x C
1 1
DATA VALID
POWER-DOWN
VALID
DATA
HARDWARE
EXTERNAL
POWER-
INVALID
DOWN
DATA
S
POWERED UP
POWERED UP
17
L
,