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ti

12500 TI Boulevard.  Dallas, Texas 75243

Title:

SHEET:

OF:

FILE:

SIZE:

DATE:

REV:

30-Jan-2002

Drawn By:

Engineer:

5

6

7

U7B

OPA2350

3

2

1

8

4

U7A

OPA2350

Vref

AVdd

TP19

C27
0.1uF

A0+

63

A0-

64

A1+

2

A1-

1

B0+

6

B0-

7

B1+

12

B1-

11

C0+

16

C0-

17

C1+

19

C1-

18

AVd

d

59

AVd

d

3

AVd

d

8

AVd

d

13

BVd

d

50

BVd

d

24

DV

dd

22

AG

N

D

60

AG

N

D

4

AG

N

D

9

AG

N

D

14

DG

ND

21

BG

N

D

25

BG

N

D

49

REFIN

62

REFOUT

61

D15

33

D14

34

D13

35

D12

36

D11

37

D10

38

D9

39

D8

40

D7

41

D6

42

D5

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D4

44

D3

45

D2

46

D1

47

D0

48

FD

26

EOC#

27

CLK

28

RD#

29

WR#

30

CS#

31

RESET#

51

ADD

52

A2

53

A1

54

A0

55

HOLD_A#

56

HOLD_B#

57

HOLD_C#

58

BYTE

23

A_REF

5

B_REF

10

C_REF

15

U8

ADS8364

C25
0.1uF

+

C24
10uF

A0+
A0-

A1-
A1+

B0+
B0-

B1-
B1+

C0+
C0-

C1-
C1+

1

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J12

1

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J11

DC_D0
DC_D1
DC_D2
DC_D3
DC_D4
DC_D5
DC_D6
DC_D7
DC_D8
DC_D9
DC_D10
DC_D11
DC_D12
DC_D13
DC_D14
DC_D15

DC_CSa#

DC_AWE

DC_ARE#

DC_TOUT0

DC_INTa

FD

HOLD_B#

HOLD_A#

ADD

A0

DC_A17

DC_A5

RESET#

AVdd

DVdd

BVdd

DC_CSa#

DC_AWE

DC_ARE#

DC_D0

DC_D1

DC_D2

DC_D3

DC_D4

DC_D5

DC_D6

DC_D7

DC_D8

DC_D9

DC_D10

DC_D11

DC_D12

DC_D13

DC_D14

DC_D15

DC_A2

DC_A3

DC_A4

DC_A5

DC_TOUT0

DC_INTa

RESET#

HOLD_C#

HOLD_B#

HOLD_A#
HOLD_C#

ADD

FD

DSP+12

DSP-12

DSP+5

DSP+5

TP20

TP22

EXT. REF.

C70
0.1uF

C69
0.1uF

C71
0.1uF

C68
0.1uF

C74
0.1uF

C76
0.1uF

C75
0.1uF

AVdd

ADC Bypass

BVdd

DVdd

C72

0.1uF

W13

DSP+3.3

DSP+3.3

R43

10K

W16

BVdd

1B1

2

1B2

3

2B1

5

2B2

6

3B1

11

3B2

10

4B1

14

4B2

13

1A

4

2A

7

3A

9

4A

12

/OE

15

S

1

16

8

U10

SN74CBT3257PWR

BVdd

DC_A16

DC_A4

DC_A15

DC_A3

DC_A14

DC_A2

CS#

A2

A1

A0

CS#

A2
A1

DC_A14

DC_A15

DC_A16

DC_A17

R42
10K

W17

BVdd

J9

W15

R71
49.9

CLK

Tom Hendrick

Tom Hendrick

B

A

ADS8364 Evaluation Module

2

3

2

4

5

3

U11

SN74AHC1G04

BVdd

TP35

TP32

TP24

TP31

TP29

TP34

TP27

TP26

TP25

R41
10K

R38
10K

R39
10K

R40
10K

TP28

ADD = CLKX1 (GP OUT)

HOLD B# = FSX1 (GP OUT)

HOLD A# = CLKR1 (GP OUT)

HOLD C# = FSR1 (GP OUT)
RESET# = DX1 (GP OUT)
FD = DR1 (GP IN)

McBSP 1 Setup

C78
0.1uF

BVdd

R73

49.9

TP36

Содержание ADS8364EVM

Страница 1: ...ADS8364EVM April 2002 Data Acquisition Products User s Guide SLAU084...

Страница 2: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

Страница 3: ...handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s r...

Страница 4: ...If there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 30 C The EVM is de...

Страница 5: ...ntains the following chapters Chapter 1 EVM Overview Chapter 2 Analog Interface Chapter 3 Digital Interface Chapter 4 Power Supply Chapter 5 Initial Setup of the Board Chapter 6 EVM Schematic Informat...

Страница 6: ...r website at www ti com Data Sheets Literature Number ADS8364 SBAS219 OPA2132 SBOS054 OPA2350 SBOS099 TPS2104 SLVS235 SN74CBT3257 SCDS017 FCC Warning This equipment is intended for use in a laboratory...

Страница 7: ...gital 5 V Supplies 2 3 2 4 Output Buffer 3 3 V Supply 2 4 2 5 Reference Voltage 2 5 3 Digital Interface 3 1 3 1 Control Signals 3 2 3 2 Bus Width 3 2 3 3 External Clock 3 2 4 Power Supply 4 1 4 1 Anal...

Страница 8: ...lection 2 4 2 3 ADS8364EVM Reference Circuit 2 5 4 1 Analog Front End Supply 4 2 4 2 ADC Power Supply Input 4 3 4 3 Digital Buffer Alternate Supply Input 4 4 Tables 2 1 Typical Analog Input Buffer Cir...

Страница 9: ...ut voltage in the range of VREF to VREF centered on the internal 2 5 V reference The part also accepts bipolar input ranges when a level shift circuit is used in the analog front end circuitry see Fig...

Страница 10: ...1 2...

Страница 11: ...vel and impedance changes to the input signal The second part is the voltage reference circuit In addition to being the conversion reference the ADS8364 s reference output is used for level shifting t...

Страница 12: ...t be taken to ensure the 15 VDC limit is not exceeded or potential damage to the op amp circuits can occur Figure 2 1 ADS8364EVM Schematic Analog Input Section _ 4 2 3 8 1 VIN VIN U1A TP9 R25 49 9 C56...

Страница 13: ...be used to buffer the reference voltage to the input of A D converter Table 2 1 Typical Analog Input Buffer Circuit Values A0 Shown Input Voltage R14 R59 R1 R45 R2 R56 R13 R58 C7 C38 C1 C32 W2 W1 0 5...

Страница 14: ...e 5 V digital source via V9 to the buffer circuit The digital buffer circuit of the ADS8364 can also be powered from an external source via J10 When operated in this fashion the shunt jumper at W18 sh...

Страница 15: ...and TP22 as a means to connect an external source An external source should be applied to TP20 referenced to TP22 The voltage input range on this node is 1 5 VDC to 2 6 VDC This voltage is buffered t...

Страница 16: ...2 6...

Страница 17: ...ttom side of the EVM allow direct plug in to the DSK plat forms If an alternate control system is desired mating connector part numbers SFM 140 01 S D or SFM 140 02 S D can be used to wire the control...

Страница 18: ...1 Address Map W17 CLOSED W17 OPEN A0 0xA000 0020 0xA002 0000 A1 0xA000 0024 0xA002 4000 B0 0xA000 0028 0xA002 8000 B1 0xA000 002C 0xA002 C000 C0 0xA000 0030 0xA003 0000 C1 0xA000 0034 0xA003 4000 Cycl...

Страница 19: ...for all power supply inputs optimal performance of the EVM requires a clean well regulated power source The power and ground planes on the inner layers of the EVM are split into digital and analog sec...

Страница 20: ...operation The circuits are designed to operate from a maximum supply voltage of 12 VDC Single supply operation can be achieved by applying a positive dc voltage to pin 1 of J7 marked as 12 V on EVM w...

Страница 21: ...the PCB W14 can be used to determine the source of the input supply With W14 closed the 5 V ADC power supply source is located at J8 The TPS2104 power switch at U9 directs the voltage from J8 to the...

Страница 22: ...d to the BVDD pins of the ADS8364 By moving the shunt jumper on W18 to pins 1 and 2 the user chooses the 5 V ADC supply as the source of the BVDD voltage J10 provides a means of supplying an alternati...

Страница 23: ...ference of the ADC W13 pins 2 and 3 shorted Table 5 1 Factory Defaults Analog Input Buffers A0 Shown Refer to Figure 2 1 and Input Voltage R14 R59 R1 R45 R2 R56 R13 R58 C7 C38 C1 C32 W2 W1 Figure 2 1...

Страница 24: ...5 2...

Страница 25: ...6 1 EVM Schematic EVM Schematic The following pages contain the ADS8364EVM circuit diagram Chapter 6...

Страница 26: ...U3B OPA2132 R64 4 99K R50 4 99K R65 R51 4 99K W7 C35 330pF C41 Vref TP6 1 2 3 J5 3 2 1 8 4 U4A OPA2132 Vin Vin R21 4 99K R9 4 99K R22 R10 4 99K W10 C5 330pF C11 Vref TP14 5 6 7 U4B OPA2132 R66 4 99K...

Страница 27: ...3 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 J11 DC_D0 DC_D1 DC_D2 DC_D3 DC_D4 DC_D5 DC_D6 DC_D7 DC_D8 DC_D9 DC_D10 DC_D11 DC_D12 DC...

Страница 28: ...1uF TP1 L1 15uH VIN DVdd C77 0 1uF TP21 L5 4 7uH AVdd C73 0 1uF TP7 L4 4 7uH DSP 5 GND 2 IN1 5 IN2 1 OUT 8 OUT 7 ENA 3 U9 TPS2104D 1 2 J10 C29 0 1uF W14 TP23 L6 4 7uH DSP 3 3 W18 BVdd R37 0 ohm R72 0...

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