Modular MSOP8 EVM User’s Guide June 2009 Data Acquisition SLAU115A
Preface Read This First About This Manual This user’s guide describes the characteristics, operation, and use of the Modular MSOP8 EVM. This EVM is a multi-device, 12 to 16 bit, SSI, analog to digital converter Evaluation Module. A complete circuit description, as well as schematic diagram and bill of materials, are included.
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Contents Contents 1 EVM Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Analog Interface . . . . . . . . . .
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Chapter 1 EVM Overview The following section gives a general overview of the Modular MSOP8 evaluation board. Topic Page 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 1.1 Features - Full−featured evaluation board for a variety of single channel, eight pin Mi- cro SOP, 12 and 16-bit, serial Output, analog to digital converters - On-board reference and buffer circuits - High-speed serial interface - Modular design for use with a variety of DSP and micro controller interface boards 1.2 Introduction The Modular MSOP8 Evaluation Module is an updated version of the Burr-Brown DEM-MSOP8 evaluation board.
Chapter 2 Analog Interface For maximum flexibility, the Modular MSOP8 EVM is designed for easy interfacing to multiple analog sources. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dual row header/socket combination at J1. This header/socket provides access to the analog input pins of the ADC. Consult Samtec at www.samtec.com or call 1−800−SAMTEC−9 for a variety of mating connector options. Table 2−1. Analog Interface Pin Out Pin Number Signal J1.
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Chapter 3 Digital Interface The Modular MSOP8 EVM is designed for easy interfacing to multiple control platforms. Samtec part numbers, SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P, provide a convenient 10-pin dual row header/socket combination at J2. This header/socket provides access to the digital control and serial data pins of the MSOP8 EVM. Consult Samtec at www.samtec.com or 1−800−SAMTEC−9 for a variety of mating connector options. Table 3−1. Digital Interface Pin Out Pin Number Signal J2.1 CS J2.
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Chapter 4 Power Supplies The Modular MSOP8 EVM board requires 5 V dc for the analog section. This includes the voltage reference (U2), the reference buffer (U4), and optionally, the ADC installed on the EVM (via JMP1). Supply voltages of 1.8 V to 5 V dc for the digital section are also required. When used in combination with one of the DAP Interface boards, J3 provides connection to the common power bus described in document SLAU104. Table 4−1 shows the pin out of J3. Table 4−1.
ADC Power 4.1 ADC Power The device installed on the modular MSOP8 EVM has several options in regards to its power source. Refer to the schematic for the following discussion. JMP1 and JMP3 allow the user to select the power supply used by the ADC. When JMP1 is in the default factory position (Shunt on pins 1−2), power to the ADC comes from J3.3 or TP5.
Chapter 5 EVM Operation The following section provides information in the analog input, digital control, and general operating conditions of the Modular MSOP8 EVM. Topic Page 5.1 Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.2 Digital Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.3 Chip Select (Shut Down) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Input 5.1 Analog Input The analog input source can be applied directly to J1 (top or bottom side) or through optional amplifier and signal conditioning modules. The analog input range is dependent on the configuration of the EVM and the ADC installed at location U1. Consult the datasheet for the device to determine the maximum analog input range. 5.2 Digital Control The digital control signals can be applied directly to J2 (top or bottom side).
Chapter 6 EVM BOM and Schematic Topic 6.1 Page EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 The following table contains a complete bill of materials for the modular MSOP8 EVM bill of materials. Table 6−1. Bill of Materials Qty.
EVM Schematic 6.1 EVM Schematic The schematic diagram is provided as a reference.
1 2 3 4 Revision History REV ECN Number B Approved Initial Release TH +5Va C1 0.47uF D D U2 1 JMP1 VIN C11 0.1uF 2 GND JMP5 U4 3 REF3025 JMP6 R12 1 4 C10 10uF J2 +V(adc) 5 OUT 3 +LVa +5Va +5Va JMP2 33 VREF /CS C6 10uF IN- C3 NI TP7 + L1 15uF 15uF +5Va 8 5 5 /CS TP1 SN74LVC1G125 3 C15 10uF B U5 +V(i/o) L3 SN74LVC1G125 +V(i/o) JMP4 +LVa C13 NI 5 REFREF+ SDO 3 3 0 ohm 0 ohm C12 0.
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