CS5371A CS5372A
2 DS748F3
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 4
SPECIFIED OPERATING CONDITIONS ................................................................................. 4
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 4
TEMPERATURE CONDITIONS ............................................................................................... 5
ANALOG INPUT CHARACTERISTICS ................................................................................... 5
PERFORMANCE CHARACTERISTICS................................................................................... 6
PERFORMANCE CHARACTERISTICS (CONT.) .................................................................... 7
PERFORMANCE PLOTS ......................................................................................................... 8
DIGITAL CHARACTERISTICS ................................................................................................ 9
DIGITAL CHARACTERISTICS (CONT.) ............................................................................... 10
DIGITAL CHARACTERISTICS (CONT.) ............................................................................ 11
POWER SUPPLY CHARACTERISTICS ................................................................................ 12
2. SYSTEM DIAGRAM ............................................................................................................ 13
3. MODULATOR OPERATION ................................................................................................... 14
3.1 One’s Density ................................................................................................................... 14
3.2 Decimated 24-bit Output .................................................................................................. 15
3.3 Synchronization ............................................................................................................... 15
3.4 Idle Tones ........................................................................................................................15
3.5 Stability ............................................................................................................................ 15
4. ANALOG SIGNALS ................................................................................................................ 16
4.1 INR±, INF± Modulator Inputs ........................................................................................... 16
4.2 Input Impedance .............................................................................................................. 16
4.3 Anti-alias Filter ................................................................................................................. 17
4.4 Analog Differential Signals ............................................................................................... 17
5. DIGITAL SIGNALS .................................................................................................................18
5.1 MCLK Connection ............................................................................................................18
5.2 MSYNC Connection ......................................................................................................... 18
5.3 MDATA Connection ......................................................................................................... 19
5.4 MFLAG Connection ......................................................................................................... 19
5.5 OFST Connection ............................................................................................................19
6. POWER MODES ..................................................................................................................... 20
6.1 Normal Operation ............................................................................................................. 20
6.2 Power Down, MCLK Enabled .......................................................................................... 20
6.3 Power Down, MCLK Disabled .......................................................................................... 20
7. VOLTAGE REFERENCE ........................................................................................................ 21
7.1 VREF Power Supply ........................................................................................................ 21
7.2 VREF RC Filter ................................................................................................................ 21
7.3 VREF PCB Routing ..........................................................................................................21
7.4 VREF Input Impedance .................................................................................................... 21
7.5 VREF Accuracy ................................................................................................................ 22
8. POWER SUPPLIES ................................................................................................................ 23
8.1 Power Supply Bypassing ................................................................................................. 23
8.2 PCB Layers and Routing ................................................................................................. 23
8.3 Power Supply Rejection ................................................................................................... 23
8.4 SCR Latch-up Considerations ......................................................................................... 24
8.5 DC-DC Converters ...........................................................................................................24
9. PIN DESCRIPTION - CS5371A ............................................................................................. 25
10. PIN DESCRIPTION - CS5372A ........................................................................................... 27
11. PACKAGE DIMENSIONS ..................................................................................................... 29
12. ORDERING INFORMATION ................................................................................................ 30
13. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION .......................... 31
14. REVISION HISTORY ........................................................................................................... 32
