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11/03/14 09:16 /Users/aitormartinpereiras/Downloads/ph/MinipHHW-master/MinipHV2_1.sch (Sheet: 1/1)

BNCPTH

TL072TL072

-5V

+5V

47K

220K

220K

220K

4.7K

.1uF

3K 1K+5V G

ND

GND

10u

+5V

GND

GND

+5V

GND

U$2

IC4A

2

31

IC4B

6

57

8

4

R7

R8

R9

R10

R11

C9

R12 R13

JP6

CJ1

1234

JP5

1234

VIN 3

VREF 2

VSS1

MCP1541

U$6

PHV

SCL

SCL

SDA

SDA

Grove Connector

Standard .1 pitch header

Analog Front End

GND

OUT

A

B

C

D

1 2

1 2

A

B

C

D

1 2

1 2

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+5V

-5V

GND

1uF

1uF

1uF

GND

GND

.1uF

GND

GND

3K

3K

+5V

+5V

.1uF

GND

GND

+5V

SOLDERJUMPERNC2

VDD1

VSS2

SDA 4

SCL 5

AIN3

OUT1

IN2

GND 4

CFLY+ 5

CFLY-3

C10

C11

C12

1

C2

R1

R2

C3

SJ1

O

PHVO

SCL

SDA

VREF

VREF

12 bit ADC

Charge pump, negative voltage gen

3 4

A

B

C

D

3 4

3 4

A

B

C

D

3 4