Texas Instruments ADS8364 User Manual Download Page 10

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12500 TI Boulevard. Dallas, Texas 75243

Title:

SHEET:

OF:

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SIZE:

DATE:

REV:

14-Jul-2006

Drawn By:

Engineer:

Revision History

REV

ECN Number

Approved

mADS8364_2_SH1.Sch

U1A

OPA2132

+Vin

-Vin

4.99K

33pF

Vref

TP7

U1B

OPA2132

R29

4.99K

R25

4.99K

R28

R24

4.99K

C19

33pF

C20

Vref

TP6

A0+

A0-

B0+

B0-

C0+

C0-

B1+

B1-

C1+

C1-

C24
0.01uF

C22
0.01uF

C23
NI

C21
NI

+Vin

-Vin

Op Amp Bypass

49.9

R12

49.9

R11

49.9

R10

49.9

R14

49.9

R13

49.9

Tom Hendrick

ADS8364/65 Modular Evaluation Module

C30

100pF

C31

100pF

C28

100pF

C27

100pF

C34

100pF

C29

100pF

C33

100pF

C32

100pF

C25

100pF

C26

100pF

C44
1nF

A0In

C43
1nF

C36
1nF

C42
1nF

C35
1nF

Note:

Components marked "NI"

are NOT installed!

Analog Input

11  12
13  14
15  16
17  18
19  20

Analog Input

11  12
13  14
15  16
17  18
19  20

IN+

V-

REF2

V+

OUT

SENSE

IN-

REF1

INA159

Vref

R21

49.9

C16

100pF

A1+

AVdd

C18
0.1uF

R20

49.9

C14

100pF

A1-

Wire Short

R33
NI

AVdd

C17
NI

C51

C50

1uF

C53

1nF

Summary of Contents for ADS8364

Page 1: ...10 List of Figures 1 Channel A0 Input Circuit 3 2 Channel A1 Input Circuit 4 3 ADS8364 654MEVM Assembly Drawing 9 List of Tables 1 Typical Analog Input Buffer Circuit Values 3 2 Header Socket Combinations at J5 5 3 J1 Pinout and Functions 6 4 JP1 Pinout 6 5 ADS8364 65MEVM Jumpers 7 6 ADS8364 65MEVM Bill of Materials 7 Full featured evaluation board for the ADS8364 and ADS8365 250 kHz 16 bit 6 chan...

Page 2: ... maximum output rate 250 kHz per channel effective 1 5 MSPS throughput max the read function can be performed during the start of the next conversion The analog input to the EVM is divided in two parts Connector J4 provides access to input channels A0 and A1 through two different amplifier circuit configurations The input buffer configuration of channel A0 presents a typical front end circuit for ...

Page 3: ...omponents and setting the appropriate jumper it is possible to configure the input buffer to accept bipolar input voltages Table 1 is related to the schematic presented in Figure 1 and represents just a few of the possible input configurations Table 1 Typical Analog Input Buffer Circuit Values Input Voltage R3 R2 R1 R4 W2 R28 R25 R24 R29 W1 Refer to Figure 1 Default open 5kΩ 5kΩ 5 kΩ 1 2 0 5 0 2 5...

Page 4: ...2 The INA159 is powered from the 5 V analog supply and arranged as a noninverting amplifier with a gain of 0 2 The internal 2 5 V reference voltage of the ADS836x is applied to both REF1 and REF2 pins of the INA159 to provide a direct 10 V interface with built in level translation to the noninverting input of channel A1 Figure 2 Channel A1 Input Circuit The analog inputs to the remaining ADS836x i...

Page 5: ...Card Chip Select active low signal used to access the EVM J5 3 DC_AWE Write Strobe signal not used on the ADS8364 65M EVM J5 5 DC_ARE Read Strobe active low signal used to access parallel data J5 7 EVM_A0 EVM Address line 0 used with U3 to control A0 J5 9 EVM_A1 EVM Address line 1 used with U3 to control A1 J5 11 EVM_A2 EVM Address line 2 used with U3 to control A2 J5 13 EVM_A3 EVM Address line 3 ...

Page 6: ...S8364 3 4 5VA Unused DGND 5 6 AGND 1 8VD Unused 7 8 VD1 Unused 3 3VD used with W5 for support circuitry 9 10 5VD 5V to pin 22 of the ADS8364 and pin 22 of the ADS8365 Alternate power sources can be applied via various test points located on the EVM See the schematic at the end of this document for details Note while filters are provided for all power supply inputs optimal performance of the EVM re...

Page 7: ...ion clock can be monitored at TP21 Table 5 provides a list of jumpers found on the EVM and their factory default conditions Table 5 ADS8364 65MEVM Jumpers Jumper Shunt Position Jumper Description W1 Pins 1 2 Controls CHA1 input source selection W2 Pins 1 2 Controls CHA1 input source selection W3 Pins 2 3 Controls reference source default is internal W4 OPEN 3x2 Jumper to control A0 A1 A2 W5 Pins 1...

Page 8: ...49 9 Ω 0603 1 0 1W Resistor Yageo Corp RC0603FR 0749R9L R31 R36 R16 R19 R22 R23 10kΩ 0603 5 0 1W Resistor Yageo Corp RC0603JR 0710KL R34 R35 R26 R27 2kΩ 0805 0 1W Resistor Yageo Corp 9C08052A2001JLHFT R15 R32 0 Ω 0603 0 1W Resistor Yageo Corp RC0603JR 070RL TP1 TP3 TP8 Tp9 Red Test Point Loop Keystone 5000 TP10 TP20 AGND DGND TP12 Black Test Point Loop Keystone 5001 TP11 TP13 TP17 SMT Test Point L...

Page 9: ...ayer of the ADS8364 65MEVM and provides quick access to component designator found on the PWB Complete Gerber files are available on request Figure 3 ADS8364 654MEVM Assembly Drawing The entire circuit schematic for the ADS8364 65MEVM appears on the following page SLAU189 September 2006 ADS8364 65MEVM 9 Submit Documentation Feedback ...

Page 10: ...Amp Bypass R8 49 9 R7 49 9 R5 49 9 R6 49 9 R12 49 9 R11 49 9 R9 49 9 R10 49 9 R14 49 9 R13 49 9 Tom Hendrick Tom Hendrick B A ADS8364 65 Modular Evaluation Module 1 3 C30 100pF C31 100pF C28 100pF C27 100pF C34 100pF C29 100pF C33 100pF C32 100pF C25 100pF C26 100pF C44 1nF A0In C43 1nF C36 1nF C42 1nF C35 1nF Note Components marked NI are NOT installed Analog Input 1 2 3 4 5 6 7 8 9 10 11 12 13 1...

Page 11: ...C_D7 DC_D8 DC_D9 DC_D10 DC_D11 DC_D12 DC_D13 DC_D14 DC_D15 DC_AWE DC_ARE DC_TOUT DC_INTa ADC Control 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J1 RESET 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 U3 SN74CBT3257PWR EVM_A0 EVM_A1 EVM_A2 BA0 BA1 BA2 EVM_A3 DC_CSa CS M_A0 M_A1 M_A2 M_A0 M_A1 M_A2 C3 0 1uF TP2 VIN D2 Green R26 2K C2 0 1uF TP1 VIN C5 ...

Page 12: ...ional Amplifiers data sheet SBOS054 4 INA159 Precision Gain of 0 2 Level Translation Difference Amplifier data sheet SBOS333 5 5 6K Interface Board User s Guide SLAU104 6 DAP Signal Conditioning Board User s Guide SLAU105 7 HPA MCU Interface Board User s Guide SLAU106 8 Designing Modular EVMs for Data Acquisition Products application report SLAA185 9 Data Converters for Industrial Power Management...

Page 13: ...roduct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products...

Page 14: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necess...

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