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2.1

Schematic Diagram

2.2

Circuit Function

2.2.1 Analog Inputs

2.2.2 Power

2.2.3 Outputs

Chapter 2

SLWU020B – February 2005 – Revised February 2006

Circuit Description

The schematic diagram for the EVM is attached at the end of this document.

The following paragraphs describe the function of EVM circuits. See the relevant data sheet for the device
operating characteristics.

The EVM can be configured to provide the ADC with either transformer-coupled or differential amplifier
inputs from a single-ended source. The default configuration uses the transformer configuration for which
the layout has been optimized to give the best performance. The inputs are provided via SMA connectors
J11 for transformer coupled input and J10 for differential amplifier input. To setup for one of these options,
the EVM must be configured as follows:

1. For a 1:1 transformer coupled input to the ADC, a single ended source is connected to J11. SJP3 has

pins 1 and 2 shorted and SJP4 has pins 2 and 3 shorted. This is the default configuration for the EVM.

2. For a differential input into the amplifier, the input source is connected to J10. SJP3 has pins 2 and 3

shorted and SJP4 has pins 1 and 2 shorted. ±5VDC must be connected to the board to provide power
to U3 and U4 for this configuration.

Power is supplied to the EVM via banana jack sockets. A separate connection is provided for a +3.3V
digital buffer supply (J1 and J2), 5-V analog supply (J3 and J2), ±5-V amplifier supply (J7, J8, and J12),
and 3.3-V external buffer supply (J4 and J6). A single 3.3-V buffer supply could be used by installing L6.
In this case, connect the 3.3 V to J1 and the return to J2.

The data outputs from the ADC are buffered using a Texas Instruments SN74AVC16244. Output data
header J9 is a standard 40-pin header on a 100-mil grid, and allows easy connection to a logic analyzer.
The connector pinout is listed in

Table 2-1

. Furthermore, two test points are provided and can be

monitored using a multimeter. Description of the test points is listed in

Table 2-2

.

SLWU020B – February 2005 – Revised February 2006

Circuit Description

7

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Содержание ADS5411

Страница 1: ...ADS5423 24 33 and ADS5411 EVM User Guide User s Guide February 2006 SLWU020B...

Страница 2: ...2 SLWU020B February 2005 Revised February 2006 Submit Documentation Feedback...

Страница 3: ...EVM Operational Procedure 5 2 Circuit Description 7 2 1 Schematic Diagram 7 2 2 Circuit Function 7 2 2 1 Analog Inputs 7 2 2 2 Power 7 2 2 3 Outputs 7 3 Parts List 9 4 Physical Description 11 4 1 PCB...

Страница 4: ...Power Plane 2 14 4 5 Layer 5 Ground Plane 15 4 6 Layer 6 Bottom Layer 16 List of Tables 1 1 Three Pin Jumper List Table 6 2 1 Output Connector J9 8 2 2 Test Point Description 8 3 1 Bill of Materials f...

Страница 5: ...es is converted into a differential signal at the input of the device Digital output from the EVM is via a 40 pin connector The digital outputs from the ADC are buffered before going to the connector...

Страница 6: ...J4 and J1 and return to J6 3 Switch power supplies on 4 Use a function generator with 50 output to input a 105 MHz 0 V offset 1 Vrms sine wave signal into J5 The frequency of the clock must be within...

Страница 7: ...ed and SJP4 has pins 2 and 3 shorted This is the default configuration for the EVM 2 For a differential input into the amplifier the input source is connected to J10 SJP3 has pins 2 and 3 shorted and...

Страница 8: ...SB 29 DATA BIT 10 10 GND 30 GND 11 DATA BIT 1 31 DATA BIT 11 12 GND 32 GND 13 DATA BIT 2 33 DATA BIT 12 14 GND 34 GND 15 DATA BIT 3 35 DATA BIT 13 MSB 16 GND 36 GND 17 DATA BIT 4 37 OVERFLOW 18 GND 38...

Страница 9: ...onic C15 33 F 10 V 10 Capacitor 5 ECS T1AX336R Panasonic C5 C7 C9 C10 C13 RESISTORS 51 1 2 CTS_742 CTS R5 R25 0 2 CTS_742 CTS R7 R8 24 9 resistor 1 16 W 1 4 ERJ 3EKF24R9V Panasonic R6 R11 R12 R27 49 9...

Страница 10: ...or ADS5411 1 ADS5423 24 33 or Texas Instruments U1 ADS5411 SN74AVC16244 1 SN74AVC16244DGG Texas Instruments U2 THS4503 1 THS4503 Texas Instruments U3 THS4601 1 THS4601 Texas Instruments U4 Surface Mou...

Страница 11: ...PCB layout of the EVM and lists the components used on the module The EVM is constructed on a 6 layer 4 77 inch 3 4 inch 0 062 inch thick PCB using FR 4 material The individual layers are shown in Fig...

Страница 12: ...www ti com PCB Layout Figure 4 2 Layer 2 Ground Plane 12 Physical Description SLWU020B February 2005 Revised February 2006 Submit Documentation Feedback...

Страница 13: ...www ti com PCB Layout Figure 4 3 Layer 3 Power Plane 1 SLWU020B February 2005 Revised February 2006 Physical Description 13 Submit Documentation Feedback...

Страница 14: ...www ti com PCB Layout Figure 4 4 Layer 4 Power Plane 2 14 Physical Description SLWU020B February 2005 Revised February 2006 Submit Documentation Feedback...

Страница 15: ...www ti com PCB Layout Figure 4 5 Layer 5 Ground Plane SLWU020B February 2005 Revised February 2006 Physical Description 15 Submit Documentation Feedback...

Страница 16: ...www ti com PCB Layout Figure 4 6 Layer 6 Bottom Layer Physical Description 16 SLWU020B February 2005 Revised February 2006 Submit Documentation Feedback...

Страница 17: ...www ti com 4 2 Schematics Schematics SLWU020B February 2005 Revised February 2006 Physical Description 17 Submit Documentation Feedback...

Страница 18: ...R4 49 9 C40 1uF 1 2 3 4 5 J11 SMA_PCB_MT_MOD 1 2 3 4 5 J10 SMA_PCB_MT_MOD R10 49 9 R9 49 9 C24 1uF 3 1 2 SJP3 3 1 2 SJP4 AIN AIN AIN AIN R11 24 9 R12 24 9 R17 499 R14 499 R6 24 9 R18 49 9 R16 499 R15...

Страница 19: ...7 AVDD 18 AVSS 19 CEXT1 20 AVSS 21 AVDD 22 AVSS 23 CEXT2 24 AVSS 25 AVDD 26 PBKG 27 ADVDD 28 ADVSS 29 AVDD 30 DNC 31 OVR 32 DVDD 33 DVSS 34 DMID 35 D0 36 D1 37 D2 38 D3 39 D4 40 D5 41 DVSS 42 DVDD 43...

Страница 20: ...3A1 36 2A4 37 2A3 38 GND 39 2A2 40 2A1 41 VCC 42 1A4 43 1A3 44 GND 45 1A2 46 1A1 47 2 OE 48 U2 SN74AVC16244DGG DRVDD C16 1uF C17 1uF C18 1uF C19 1uF CLK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19...

Страница 21: ...L3 C13 33uF C5 33uF J SETON Y DEWONCK 1 2 L6 C27 01uF C28 01uF C29 01uF C30 01uF C31 01uF C32 01uF C33 01uF C34 01uF C35 01uF C36 01uF C37 01uF C38 01uF C39 01uF C8 1uF C7 33uF 1 2 L2 1 2 L4 C11 1uF C...

Страница 22: ...PRESSED IMPLIED OR STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE The user assumes all responsibility and liability for proper and safe handling of the goods...

Страница 23: ...irreversible damage to the EVM If there are questions concerning the input range please contact a TI field representative prior to connecting the input power Applying loads outside of the specified o...

Страница 24: ...iness 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 wou...

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