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

Serial 12-Bit ADC

18

______________________________________________________________________________________

20

19

18

17

16

15

14

13

12

11

1

2

3

4

5

6

7

8

9

10

MAX1245

MC683XX

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

COM

SHDN

V

DD

SCLK

CS

DIN

SSTRB

DOUT

DGND

AGND

V

DD

VREF

(POWER SUPPLIES)

SCK

PCS0

MOSI

MISO

CLOCK CONNECTIONS NOT SHOWN

0.1

µF

4.7

µF

(GND)

0.1

µF

ANALOG

INPUTS

+3V

+2.5V

+2.048V

Figure 17. MAX1245 QSPI Connections

High-Speed Digital Interfacing with QSPI

The MAX1245 can interface with QSPI using the circuit in

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.