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MAX11634 Datasheet(PDF) 10 Page - Maxim Integrated Products

Part No. MAX11634
Description  12-Bit, 300ksps ADCs with Differential
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX11634 Datasheet(HTML) 10 Page - Maxim Integrated Products

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12-Bit, 300ksps ADCs with Differential
Track/Hold, and Internal Reference
10
______________________________________________________________________________________
Pin Description
PIN
MAX11634
MAX11635
MAX11636
MAX11637
NAME
FUNCTION
1–4
AIN0–AIN3
Analog Inputs
5, 6
N.C.
No Connection. Not internally connected.
7
REF-
External Differential Reference Negative Input
8
CNVST
Active-Low Conversion Start Input. See Table 3 for details on programming the
setup register.
9
9
REF+
Positive Reference Input. Bypass to GND with a 0.1µF capacitor.
10
10
GND
Ground
11
11
VDD
Power Input. Bypass to GND with a 0.1µF capacitor.
12
12
CS
Active-Low Chip-Select Input. When
CS is high, DOUT is high impedance.
13
13
SCLK
Serial-Clock Input. Clocks data in and out of the serial interface (duty cycle must
be 40% to 60%). See Table 3 for details on programming the clock mode.
14
14
DIN
Serial-Data Input. DIN data is latched into the serial interface on the rising edge of
SCLK.
15
15
DOUT
Serial-Data Output. Data is clocked out on the falling edge of SCLK. High
impedance when
CS is connected to VDD.
16
16
EOC
Active-Low End-of-Conversion Output. Data is valid after
EOC pulls low.
1–6
AIN0–AIN5
Analog Inputs
7
REF-/AIN6
External Differential Reference Negative Input/Analog Input 6. See Table 3 for
details on programming the setup register.
8
CNVST/AIN7
Active-Low Conversion Start Input/Analog Input 7. See Table 3 for details on
programming the setup register.
16
15
14
13
12
11
10
9
2
1
3
4
5
6
7
8
AIN0
( ) PINOUT FOR THE MAX11634/MAX11635.
TOP VIEW
EOC
DOUT
DIN
SCLK
CS
VDD
GND
REF+
MAX11634–
MAX11637
QSOP
AIN1
AIN2
AIN5 (N.C.)
AIN3
AIN4 (N.C.)
REF-/AIN6 (REF-)
CNVST/AIN7 (CNVST)
+
Pin Configuration


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