MAX1245ACAP Просмотр технического описания (PDF) - Maxim Integrated

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MAX1245ACAP

+2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC

Maxim Integrated 

+2.375V, Low-Power, 8-Channel,

Serial 12-Bit ADC

ANALOG

INPUTS

+2.5V +3V

1 CH0

2 CH1

VDD 20

SCLK 19

3 CH2

CS 18

4 CH3 MAX1245 DIN 17

5 CH4

SSTRB 16

6 CH5

DOUT 15

7 CH6

DGND 14

8 CH7

AGND 13

9 COM

10 SHDN

VDD 12

VREF 11

0.1µF

0.1µF

+2.048V

4.7µF

(POWER SUPPLIES)

SCK

PCS0

MOSI

MC683XX

MISO

(GND)

CLOCK CONNECTIONS NOT SHOWN

Figure 17. MAX1245 QSPI Connections

High-Speed Digital Interfacing with QSPI

The MAX1245 can interface with QSPI using the circuit in

Figure 17 (fSCLK = 1.5MHz, CPOL = 0, CPHA = 0). This

QSPI circuit can be programmed to do a conversion on

each of the eight channels. The result is stored in memory

without taxing the CPU, since QSPI incorporates its own

micro-sequencer.

Because the maximum external clock frequency is

1.5MHz, the MAX1245 is QSPI compatible up to 1.5MHz.

18 ______________________________________________________________________________________

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