Chapter 10: Analog Capture Circuit - Xilinx MIcroBlaze Development Spartan-3E 1600E Kit User Manual

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Analog Capture Circuit
The MicroBlaze Development Kit board includes a two-channel analog capture circuit,
consisting of aprogrammable scaling pre-amplifier and an analog-to-digital converter
(ADC), as shown in
6-pin DAC
Header (J5)
The analog capture circuit consists of a Linear Technology LTC6912-1 programmable pre-
amplifier that scales the incoming analog signal on header J7 (see
of pre-amplifier connects to a Linear Technology LTC1407A-1 ADC. Both the pre-amplifier
and the ADC are serially programmed or controlled by the FPGA.
MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
UG257 (v1.1) December 5, 2007
Figure 10-1. Analog inputs are supplied on the J7 header.
Figure 10-1: Two-Channel Analog Capture Circuit
Chapter 10
Linear Tech LTC6912 Dual A/D
SPI_MOSI: (T4)
SPI_MISO: (N10)
SPI_SCK: (U16)
DAC_CS: (N8)
DAC_CLR: (P8)
Linear Tech LTC1407A-1 Dual A/D
SPI_SCK: (U16)
AD_CONV: (P11)
SPI_MISO: (N10)
Spartan-3E
Development Board
Figure
UG257_04_01_061306
10-2). The output
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