CS5374 Ver la hoja de datos (PDF) - Cirrus Logic

Número de pieza

componentes Descripción

Fabricante

CS5374

Dual High-performance Amplifier & ΔΣ Modulator

Cirrus Logic 

CS5374

DS862F1

CS5374

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ....................................................................... 4

SPECIFIED OPERATING CONDITIONS ................................................................................ 4

ABSOLUTE MAXIMUM RATINGS .......................................................................................... 4

THERMAL CHARACTERISTICS ............................................................................................. 5

ANALOG CHARACTERISTICS ............................................................................................... 5

PERFORMANCE SPECIFICATIONS ...................................................................................... 7

CHANNEL PERFORMANCE PLOTS ...................................................................................... 9

DIGITAL CHARACTERISTICS .............................................................................................. 10

SPI™ INTERFACE TIMING (EXTERNAL MASTER) ............................................................ 12

POWER SUPPLY CHARACTERISTICS ............................................................................... 13

2. GENERAL DESCRIPTION..................................................................................................... 14

3. AMPLIFIER OPERATION ...................................................................................................... 16

3.1 Amplifier Inputs — INA, INB .......................................................................................... 16

3.1.1 Multiplexer Settings — MUX ............................................................................... 16

3.1.2 Gain Settings — GAIN ........................................................................................ 16

3.2 Amplifier Outputs — OUTR, OUTF ............................................................................... 16

3.2.1 Guard Output — GUARD.................................................................................... 16

3.3 Differential Signals ........................................................................................................ 17

4. MODULATOR OPERATION .................................................................................................. 18

4.1 Modulator Anti-Alias Filter ............................................................................................. 18

4.2 Modulator Inputs — INR, INF ........................................................................................ 19

4.2.1 Modulator Input Impedance ................................................................................ 19

4.2.2 Modulator Idle Tones — OFST ........................................................................... 19

4.3 Modulator Output — MDATA ........................................................................................ 19

4.3.1 Modulator One’s Density ..................................................................................... 19

4.3.2 Decimated 24-bit Output ..................................................................................... 19

4.4 Modulator Stability — MFLAG....................................................................................... 20

4.5 Modulator Clock Input — MCLK.................................................................................... 20

4.6 Modulator Synchronization — MSYNC ......................................................................... 20

5. SPITM SERIAL PORT ............................................................................................................. 21

5.1 SPI Pin Descriptions ..................................................................................................... 21

5.2 SPI Serial Transactions................................................................................................. 21

5.3 SPI Registers ................................................................................................................ 23

5.3.1 VERSION — 0x00............................................................................................... 23

5.3.2 AMP1CFG — 0x01 ............................................................................................. 23

5.3.3 AMP2CFG — 0x02 ............................................................................................. 23

5.3.4 ADCCFG — 0x03................................................................................................ 24

5.3.5 PWRCFG — 0x04 ............................................................................................... 24

5.4 Example: CS5374 Configuration by an External SPI Master ........................................ 24

5.5 Example: CS5374 Configuration by the CS5376A SPI 2 Port ...................................... 25

5.5.1 CS5376A SPI 1 Transactions ............................................................................. 25

6. POWER MODES .................................................................................................................... 29

6.1 Normal Operation .......................................................................................................... 29

6.2 Power Down, MCLK Enabled........................................................................................ 29

6.3 Power Down, MCLK Disabled ....................................................................................... 29

7. VOLTAGE REFERENCE ....................................................................................................... 30

7.1 VREF Power Supply ..................................................................................................... 30

7.2 VREF RC Filter ............................................................................................................. 30

7.3 VREF PCB Routing ....................................................................................................... 30

7.4 VREF Input Impedance................................................................................................. 30

7.5 VREF Accuracy............................................................................................................. 31

8. POWER SUPPLIES .............................................................................................................. 32

8.1 Analog Power Supplies ................................................................................................. 32

8.2 Digital Power Supply ..................................................................................................... 32

8.3 Power Supply Bypassing .............................................................................................. 32

2

DS862F1

Share Link: