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ti

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Revision History

REV

ECN Number

Approved

DOCUMENT CONTROL #:

2

2

Circuits

A

DATE:

30-Jun-2005

Circuits

6458769

C25

0.01uF

C17

0.1uF

C28

2.2uF

C18

0.1uF

C19

2.2uF

C29

0.01uF

C20

2.2uF

C30

0.01uF

+5VCC

+5VCC

+5VCC

C14

2.2uF

C26

0.01uF

+5VCC

C15

2.2uF

C27

0.01uF

+VBD

-VCC

+VCC

C11

0.1uF

C5

1uF

C3

1uF

C9

0.1uF

R19

604

R21

12

+IN

C32

NI

C31

1uF

R3

NI

EXT_REF

R20

100

R5

NI

TP6

3

1

2

SJP4

1

2

SJP7

R18

604

+

C24

10uF

C33

6800pF

C1

47uF

R14

768

R6

0

C21

NI

+VCC

C2

1uF

C8

0.1uF

-VCC

C10

0.1uF

C4

1uF

IN

1

OUT

2

GND

3

U1

NI

+5VCC

R2

1.2k

3

1

2

SJP2

3

1

2

SJP1

R15

0

Lijoy Philipose

Lijoy Philipose

C22

NI

1

2

3

R13

10k

1

2

SJP6

3

2

6

7

4

 

5

 

1

U2

OPA132

R1

49.9

3

1

2

SJP5

3

1

2

SJP3

*

*

*

3

2

6

7

4

5

1

8

U4

THS4031

C23

NI

*

TP5

R17

0

R4

NI

R16

0

CS

SCLK

FS

PD

B_SDO

+VBD

C16

0.1uF

CS

SCLK

FS

R8

10k

R10

10k

R11

10k

+VBD

R12

10k

PD

L1

MMZ2012R601A

+

C38
10uF

L2

MMZ2012R601A

+

C39

10uF

TP10

+5VCC

C43

0.01uF

C13

0.1uF

TP11

TP8

+VBD

C42

0.01uF

C12

0.1uF

TP9

C35
10uF

C34
10uF

C46

1nF

C47

1nF

+AVCC

+BVDD

L3

MMZ2012R601A

L4

MMZ2012R601A

+

C41

10uF

+

C40
10uF

C6

NI

C7

NI

C44
NI

C45
NI

TP7

TP13

TP14

+VCC

-VCC

C36
10uF

C37
10uF

C48
1000pF

C49
1000pF

+VA

-VA

TP12

SB/2C

1

AGND

2

+VA

3

AGND

4

AGND

5

VA

6

REFM

7

REFIN

8

REFOUT

9

NC

10

IN+

11

IN-

12

NC

13

VA

14

AGND

15

VA

16

VA

17

AGND

18

AGND

19

BVDD

20

BGND

21

BUSY

22

SDO

23

SCLK

24

CONVST

25

CS

26

FS

27

PD

28

U5

ADS8370/ADS8380

SB/2C

CONVST

SDO

BUSY

B_BUSY

SB/2C

CONVST

B_SB/2C

B_PD

B_FS

B_CS

B_CONVST

B_SCLK

R7

10k

R9

10k

W2

W3

W4

W5

C50

2.2uF

C51

0.01uF

+5VCC

R30

0

R31

1k

R22

100

R23

100

R24

100

R25

100

R26

100

R27

100

R28

100

R29

100

C59

NI

C60 NI

R32
10k

+VBD

+VBD

C57

0.1uF

+VBD

C52

0.1uF

OE

1

A

2

GND

3

Y

4

VCC

5

U3

SN74X1G125

OE

1

A

2

GND

3

Y

4

VCC

5

U6

SN74X1G125

OE

1

A

2

GND

3

Y

4

VCC

5

U8

SN74X1G125

OE

1

A

2

GND

3

Y

4

VCC

5

U7

SN74X1G125

C53

0.1uF

OE

1

A

2

GND

3

Y

4

VCC

5

U9

SN74X1G125

OE

1

A

2

GND

3

Y

4

VCC

5

U10

SN74X1G125

OE

1

A

2

GND

3

Y

4

VCC

5

U11

SN74X1G125

OE

1

A

2

GND

3

Y

4

VCC

5

U12

SN74X1G125

+VBD

C54

0.1uF

+VBD

C55

0.1uF

+VBD

C56

0.1uF

+VBD

+VBD

C58

0.1uF

NC

1

+VIN

2

EN

3

GND

4

NC

5

VREF

6

NC

7

NC

8

U13

REF1004-2.5

+5VCC

C62

1000pF

C61

1uF

R33

49.9k

+5VCC

Summary of Contents for ADS8370EVM

Page 1: ...umbers ADS8380 SLAS387 REF1004C 2 5 SBVS002 SN74AHC1G125 SCLS377 THS4031 SLOS224 OPA132 SBOS054 Contents 1 EVM Overview 2 2 Analog Interface 2 3 Digital Interface 4 4 Power Supplies 5 5 Using the EVM...

Page 2: ...settling low noise amplifier The amplifier circuit shown in Figure 1 is the buffer circuit used on the ADS8380EVM This circuit consists of the THS4031 a high speed low noise low distortion amplifier...

Page 3: ...mplifier U3 is set for a gain of 1 6 enabling it to take a 2 5 V input and output 4 1 V for use with the converter or as part of the dc offset voltage circuit for the input buffer U4 The user supplied...

Page 4: ...tive supply to VCC Open Shorted 1 SJP6 Connect DC offset voltage to U4 Shorted 1 N A SJP7 Connect IN pin to analog ground Shorted 1 N A W1 Connect 5VD to BVDD Shorted 1 Open Connect 3 3VD to BVDD Open...

Page 5: ...alog section of the board A D Reference A single 5 Vdc or 3 3 Vdc supply for the digital section of the board A D buffers There are two ways to provide these voltages The first way is to connect the v...

Page 6: ...ylene or C0G type capacitors are recommended for use in the signal path As a prototype board the buffer circuit has resistor pads for configuring the input as either single ended or fully differential...

Page 7: ...00 1 16 W 1 0603 SMD R24 R25 Alternate R26 R27 R28 R29 13 1 1 k R31 603 Panasonic ECG or ERJ 3EKF1001V RES 1 k 1 16 W 1 0603 SMD Alternate 14 1 49 9 k R33 805 Panasonic ECG or ERJ 6ENF4992V RES 49 9 k...

Page 8: ...D Texas Instruments REF1004C 2 5 2 5 V Micropower Voltage Reference 36 1 SMA_PCB_ J1 SMA_JACK Johnson Components Inc 142 0701 301 Right Angle SMA Connector MT 37 1 Power Supply J2 5X2X 1_ Samtec SSW 1...

Page 9: ...www ti com 8 Board Layers Board Layers Figure 2 Top Layer ADS8380EVM SLAU146 December 2004 9...

Page 10: ...www ti com Board Layers Figure 3 Power Plane ADS8380EVM 10 SLAU146 December 2004...

Page 11: ...www ti com Board Layers Figure 4 Ground Plane ADS8380EVM SLAU146 December 2004 11...

Page 12: ...www ti com Board Layers Figure 5 Bottom Layer ADS8380EVM 12 SLAU146 December 2004...

Page 13: ...www ti com 9 Schematics Schematics Schematic diagrams are appended following this page ADS8380EVM SLAU146 December 2004 13...

Page 14: ...2005 ADS8370EVM ADS8380EVM 6458769 Serial Control 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 P2 Analog Input 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 P1 VA VA CS FS PD SCLK AVCC VA...

Page 15: ...0 1uF TP11 TP8 VBD C42 0 01uF C12 0 1uF TP9 C35 10uF C34 10uF C46 1nF C47 1nF AVCC BVDD L3 MMZ2012R601A L4 MMZ2012R601A C41 10uF C40 10uF C6 NI C7 NI C44 NI C45 NI TP7 TP13 TP14 VCC VCC C36 10uF C37...

Page 16: ...ute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual pro...

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