Clock Generator

4MHz Crystal

Oscillator Circuit

1M

4MHz

FS

CLK Divider

ENXTB

We connect a 4MHz crystal oscillator to the clock generator to generate a 4MHz clock frequency. A

frequency divider is used to divide the clock signal to generate a signal FS, and the ADC uses this FS signal to

do data conversion.

ENXTB

ENAD

FS

L

H

83.33 kHz

H

L

0, (L)

Function Network

OP

OPO

+

_

OPEN

OPC[1:0]

SINH[1:0]

OPO

OPH

SGND

TEMPH

FTIN

SINL[1:0]

VRL

VRH

SGND

TEMPL

IN-

SFTA[0]

FTB

FTIN

IN+

SVRL

VRL

VR-

SVRH

VR+

ADC

ADO[23:0]

ENAD

ADG[5:0]

VR+

VR-

IN+

IN-

FTC

FTB

250K

27nF

SFTA[1]

NETA[7:0]

NETB[7:0]

SINL[1:0]

SINH[1:0]

SOPL[1:0]

7

6

5

4

3

2

1

0

SVRH

SVRL

ADG[5:0]

OPEN

TPS[2:0]

CYS[1:0]

TPS[2:0]

VRH

REFI

AGND

NETC[7:0]

NETD[7:0]

ENAD

ENXTB

ENVS

CPVR

ENREF

OPN

OPP

VRL

VRH

45K

5K

5K

45K

VDD

SGND

VS

ENVS

AGND

SFTA[1:0]

SVR1

ENGNDB

SVR0

OPC[1:0]

0

1

2

3

Adress

Name

4

ADCO[23:0]

Voltage Reference

and

Temperature Sensor

TEMPL

TEMPH

*(REFI, AGND)= 0.5V

ENREF

SVR0

SVR0

SVR0

SVR1

R/W

R

R/W

R/W

R/W