2

3

4

5

NA(3.3M)

VINVIN+ V+

RG SHUTDOWN V-

V_REF 100pF/COG/5%

R6

100nF/X7R/10%

V_REF

1uF/X5R/10%

OPA333DBV

TP3

J2

100k/1%

-IN

B

R13 10K/1%

1k/1% 0

R4

1 2 3

U3

VCC

100nF/X7R/10%

C9 R9

4

5

100k/1%

P4

V+

P3

-

P2

TP2

VOUT

U2

OUT V- + +IN

P1

R1

V_REF R8

VCC Grove con

VOUT

TP1

OPA333DBV

R14 1M/1%

1uF/X5R/10%

GNDA VCC

0

V+

1 8 4

A3

5

6

VOUT

A2

3 2 1

A1

160k

VCC

R5

40k

C8

COM

2k/1%

VCC

INA331IDGKT 40k

C6

2k/1%

R16

C4

160k

C5 C7

R15

10nF/X7R/10%

C3 V_REF

2 3 7

REF

+IN VOUT

LS

L

L RS LS

0

J1

5

C1

R7

RS

COM2 COM1

R R

J1

U1

100pF/COG/5%

10k/1%

+

R3

-

10k/1%

-IN

R2

4

2k/1%

1uF/X7R/10%

R11

A

G=5,76...101

V_REF

2k/1%

COM1

B

NA(3.3M)

G=1+R12/(TR1+R11)

Fc=0.16Hz

C2

COM2

R10

R12

OAmp with regulated gain!

1 pole

G=5*(1+R8/R7)=10

HF rejection

VCC

A

6

High-Pass filter

Instrumental Amplifier

1uF/X5R/10%

1

C R17 330R

V_REF

V_REF

C

R18 2k/1% 100nF/X7R/10% U4

C10

C11 10uF/X7R

V_REF TP4

CJ432

R19 10k/1%

SeeedStudio

D

D

TITLE: Design: Date:

1

2

3

4

Deng

28/11/14 1:27 PM

5

Check: Vision:

Bruce V1.0

6

Grove-EMG Sensor v1.1.sch - GitHub

Nov 28, 2014 - NA(3.3M). V_REF. 1uF/X5R/10%. 10k/1%. 10k/1%. V_REF. V. C. C ... TITLE: Design: Check: Date: Vision: A. B. C. D. 1. 2. 3. 4. 5. 6. A. B. C. D. 1.

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