MAX1320ECM+T【PDF 2/27 页】IC ADC 14BIT 8CH 2MSPS 48LQFP

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Sheet目录2008

1页 [2页]3页 4页 5页 6页

MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326

8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs

with ±10V, ±5V, and 0 to +5V Analog Input Ranges

______________________________________________________________________________________

Pin Description (continued)

PIN

MAX1316

MAX1320

MAX1324

MAX1317

MAX1321

MAX1325

MAX1318

MAX1322

MAX1326

NAME

FUNCTION

—

CH5

Channel 5 Analog Input

—

CH6

Channel 6 Analog Input

—

CH7

Channel 7 Analog Input

INTCLK/

EXTCLK

Clock-Mode Select Input. Use INTCLK/EXTCLK to select the internal

or external conversion clock. Connect INTCLK/EXTCLK to AVDD to

select the internal clock. Connect INTCLK/EXTCLK to AGND to use

an external clock connected to CLK.

REFMS

Midscale Reference Bypass or Input. REFMS is the bypass point for

an internally generated reference voltage. For the MAX1316/

MAX1317/MAX1318, connect a 0.1F capacitor from REFMS to

AGND. For the MAX1320/MAX1321/MAX1322/MAX1324/

MAX1325/MAX1326, connect REFMS directly to REF and bypass

with a 0.1F capacitor from REFMS to AGND.

REF

ADC Reference Bypass or Input. REF is the bypass point for an

internally generated reference voltage. Bypass REF with a 0.01F

capacitor to AGND. REF can be driven externally by a precision

external voltage reference.

REF+

Positive Reference Bypass. REF+ is the bypass point for an

internally generated reference voltage. Bypass REF+ with a 0.1F

capacitor to AGND. Also bypass REF+ to REF- with a 2.2F and a

0.1F capacitor.

COM

Reference Common Bypass. COM is the bypass point for an

internally generated reference voltage. Bypass COM to AGND with

a 2.2F and a 0.1F capacitor.

REF-

Negative Reference Bypass. REF- is the bypass point for an

internally generated reference voltage. Bypass REF- with a 0.1F

capacitor to AGND. Also bypass REF- to REF+ with a 2.2F and a

0.1F capacitor.

Digital I/O Bit 0 of 14-Bit Parallel Data Bus. High impedance when

RD = 1 or CS = 1.

Digital I/O Bit 1 of 14-Bit Parallel Data Bus. High impedance when

RD = 1 or CS = 1.

Digital I/O Bit 2 of 14-Bit Parallel Data Bus. High impedance when

RD = 1 or CS = 1.

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