CDB5378 查看數據表（PDF） - Cirrus Logic

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CDB5378

Single-channel Seismic Evaluation System

Cirrus Logic 

CDB5378

3.3.3 Analog Front End

The Analog Front End sub-panel configures the amplifier, modulator and test DAC pin options. Pin op-

tions are controlled through the GPIO outputs of the digital filter.

Any changes made under this sub-panel will not be applied to the target board until the Configure button

is pushed. The Configure button writes the new configuration to the target board and then enables the

data Capture button.

Control

Amp Mux

DAC Mode

Gain

Pwdn

Description

Selects the input source for the CS3301/02 amplifiers. An internal termination, exter-

nal INA inputs or external INB inputs can be selected.

Selects the operational mode of the CS5373A test DAC. The test DAC operational

modes are AC dual output (OUT&BUF), AC precision output (OUT only), AC buffered

output (BUF only), DC common mode output (DC Common), DC differential output

(DC Diff), or AC common mode output (AC Common). The test DAC can also be

powered down (PWDN) when not in use to save power.

Sets the amplifier gain range and test DAC attenuation. Amplifier gain and DAC

attenuation settings of 1x, 2x, 4x, 8x, 16x, 32x, or 64x can be selected and are con-

trolled together.

Disabled for CDB5378. PWDN routes to DIP switch S5.

40

DS639DB3

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