CS5373A-ISZ Просмотр технического описания (PDF) - Cirrus Logic

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CS5373A-ISZ

Low-power, High-performance ∆Σ Modulator and Test DAC

Cirrus Logic 

CS5373A

TABLE OF CONTENTS

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

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

TEMPERATURE CONDITIONS ............................................................................................... 5

ABSOLUTE MAXIMUM RATINGS ........................................................................................... 5

ANALOG INPUT CHARACTERISTICS ................................................................................... 6

ANALOG OUTPUT CHARACTERISTICS ............................................................................... 7

MODULATOR CHARACTERISTICS ........................................................................................ 8

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

DAC AC DIFFERENTIAL MODES 1, 2, 3............................................................................... 10

DIGITAL CHARACTERISTICS .............................................................................................. 15

POWER SUPPLY CHARACTERISTICS ................................................................................ 18

2. GENERAL DESCRIPTION ..................................................................................................... 19

2.1 Delta-Sigma Modulator .................................................................................................... 19

2.2 Digital-to-Analog Converter .............................................................................................. 19

3. SYSTEM DIAGRAM ............................................................................................................ 20

4. POWER MODES ..................................................................................................................... 21

4.1 Power Down ..................................................................................................................... 21

4.2 Sleep Mode ...................................................................................................................... 21

4.3 Modulator Mode ............................................................................................................... 21

4.4 AC Test Modes ................................................................................................................ 21

4.5 DC Test Modes ................................................................................................................ 21

5. OPERATIONAL MODES ........................................................................................................ 22

5.1 Modulator Mode ............................................................................................................... 22

5.1.1 Modulator One’s Density ..................................................................................... 22

5.1.2 Modulator Decimated Output .............................................................................. 22

5.1.3 Modulator Synchronization .................................................................................. 22

5.1.4 Modulator Idle Tones .......................................................................................... 23

5.1.5 Modulator Stability ............................................................................................... 23

5.2 AC Test Modes ................................................................................................................ 23

5.2.1 AC Differential ..................................................................................................... 23

5.2.2 AC Common Mode .............................................................................................. 24

5.2.3 DAC Stability ....................................................................................................... 24

5.3 DC Test Modes ................................................................................................................ 24

5.3.1 DC Common Mode ............................................................................................. 24

5.3.2 DC Differential ..................................................................................................... 25

5.4 Sleep Mode ...................................................................................................................... 25

6. DIGITAL SIGNALS ................................................................................................................. 26

6.1 MCLK Connection ............................................................................................................ 26

6.2 MSYNC Connection ......................................................................................................... 26

6.3 MDATA Connection ......................................................................................................... 27

6.4 MFLAG Connection ......................................................................................................... 27

6.5 TDATA Connection .......................................................................................................... 27

6.6 GPIO Connections ........................................................................................................... 27

7. ANALOG SIGNALS ................................................................................................................ 28

7.1 INR±, INF± Modulator Inputs ........................................................................................... 28

7.1.1 Modulator Input Impedance ................................................................................ 28

7.1.2 Modulator Anti-alias Filter ................................................................................... 28

7.2 DAC Output Attenuation .................................................................................................. 29

7.3 DAC OUT± Precision Output ........................................................................................... 29

7.4 DAC BUF± Buffered Output ............................................................................................. 30

7.5 DAC CAP± Connection .................................................................................................... 30

7.6 Analog Differential Signals ............................................................................................... 30

8. VOLTAGE REFERENCE ........................................................................................................ 31

2

DS703F1

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