CS5378-IS Ver la hoja de datos (PDF) - Cirrus Logic

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CS5378-IS

Low-power Single-channel Decimation Filter

Cirrus Logic 

CS5378

Modulator

Input

512 kHz

Sinc Filter

2 - 64000

FIR1

4

FIR2

2

IIR1

1st Order

IIR2

2nd Order

Gain &

DC Offset

Corrections

Output to High Speed Serial Interface

Output Word Rate from 4000 SPS ~ 1 SPS

Figure 2. Digital Filtering Stages

DC offset.

- Calibration engine for automatic calcula-

tion of offset correction factor.

1.2 Integrated Peripheral Features

• Low jitter PLL to generate local clocks.

- 1.024 MHz, 2.048 MHz, 4.096 MHz stan-

dard clock or Manchester encoded input.

• Synchronous operation for simultaneous sam-

pling in multi-sensor systems.

- MCLK / MSYNC output signals to syn-

chronize external components.

• High speed serial data output.

- Asynchronous operation to 4 MHz for di-

rect connection to system telemetry.

- Internal 8-deep data FIFO for flexible out-

put timing.

- Selectable 24-bit data only or 32-bit sta-

tus+data output.

• Digital test bit stream signal generator suitable

for CS5373A ∆Σ test DAC.

- Sine wave output mode for testing total har-

monic distortion.

• Time break controller to record system timing

information.

- Dedicated TB status bit in the output data

stream.

- Programmable output delay to match sys-

tem group delay.

• 8 General Purpose I/O (GPIO) pins for local

hardware control.

1.3 System Level Features

• Flexible configuration options.

- Configuration 'on-the-fly' via microcontrol-

ler or system telemetry.

- Fixed configuration via stand-alone boot

EEPROM.

• Low power consumption.

- 16 mW at 500 SPS OWR.

- 100 µW standby mode.

• Flexible power supply configurations.

- Separate digital logic core, telemetry I/O,

and PLL power supplies.

- Telemetry I/O and PLL interfaces operate

DS639F2

7

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