AD1938YSTZ Analog Devices Inc, AD1938YSTZ Datasheet - Page 2

• Manufacturer Part Number: AD1938YSTZ
• Description: IC CODEC 24BIT 4ADC/8DAC 48LQFP
• Manufacturer: Analog Devices Inc
• Type: General Purposer

Specifications of AD1938YSTZ

• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 4 / 8
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 94 / 94
• Dynamic Range, Adcs / Dacs (db) Typ: 105 / 106
• Voltage - Supply, Analog: 3 V ~ 3.6 V
• Voltage - Supply, Digital: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Audio Codec Type: Audio
• No. Of Adcs: 4
• No. Of Dacs: 8
• No. Of Input Channels: 4
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 108dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD1938
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 11
Theory of Operation ...................................................................... 13
REVISION HISTORY
1/11—Rev. B to Rev. C
Added Automotive Information ................................. Throughout
Change to Table 2, Introductory Text ............................................ 4
Change to Table 4, Introductory Text ............................................ 5
Change to Table 7, Introductory Text ............................................ 7
Changes to Ordering Guide .......................................................... 31
8/09—Rev. A to Rev. B
Changes to Table 16 Title............................................................... 24
Changes to Figure 18 and Table 19 Titles .................................... 25
Changes to Table 20 Title............................................................... 26
Changes to Table 23 and Table 24 Titles ...................................... 27
Changes to Table 25 Title............................................................... 28
Changes to Ordering Guide .......................................................... 31
Test Conditions ............................................................................. 3
Analog Performance Specifications ........................................... 3
Crystal Oscillator Specifications................................................. 4
Digital Input/Output Specifications........................................... 5
Power Supply Specifications........................................................ 5
Digital Filters ................................................................................. 6
Timing Specifications .................................................................. 7
Thermal Resistance ...................................................................... 8
ESD Caution .................................................................................. 8
Rev. C | Page 2 of 32
Control Registers ............................................................................ 24
Applications Circuits ...................................................................... 30
Outline Dimensions ....................................................................... 31
7/08—Rev. 0 to Rev. A
Changes to Table 7 ............................................................................. 7
Changes to Figure 2 ........................................................................... 9
Changes to Table 10 .......................................................................... 9
Changes to Clock Signals Section ................................................ 13
Changes to Reset and Power-Down Section ............................... 14
Change to Serial Control Port Section ........................................ 14
Changes to Table 11 ....................................................................... 14
Changes to Figure 24 and Figure 25 ............................................ 22
Changes to Figure 26 ...................................................................... 23
Changes to Definitions Section .................................................... 24
Changes to Table 16 ....................................................................... 24
Change to Additional Modes Section .......................................... 29
Change to Figure 30 ....................................................................... 30
5/06—Revision 0: Initial Version
Analog-to-Digital Converters (ADCs) .................................... 13
Digital-to-Analog Converters (DACs) .................................... 13
Clock Signals ............................................................................... 13
Reset and Power-Down ............................................................. 14
Serial Control Port ..................................................................... 14
Power Supply and Voltage Reference ....................................... 15
Serial Data Ports—Data Format ............................................... 15
Time-Division Multiplexed (TDM) Modes ............................ 15
Daisy-Chain Mode ..................................................................... 19
Definitions ................................................................................... 24
PLL and Clock Control Registers ............................................. 24
DAC Control Registers .............................................................. 25
ADC Control Registers .............................................................. 27
Additional Modes ....................................................................... 29
Ordering Guide .......................................................................... 31