Datasheet AD1937 (Analog Devices) - 7

AD1937 DIGITAL FILTERS Table 7. Parameter Mode Factor Min Typ Max Unit
ADC DECIMATION FILTER All modes, typical @ 48 kHz Pass Band 0.4375 × fS 21 kHz Pass-Band Ripple ±0.015 dB Transition Band 0.5 × fS 24 kHz Stop Band 0.5625 × fS 27 kHz Stop-Band Attenuation 79 dB Group Delay 22.9844 ÷ fS 479 μs DAC INTERPOLATION FILTER Pass Band 48 kHz mode, typical @ 48 kHz 0.4535 × fS 22 kHz 96 kHz mode, typical @ 96 kHz 0.3646 × fS 35 kHz 192 kHz mode, typical @ 192 kHz 0.3646 × fS 70 kHz Pass-Band Ripple 48 kHz mode, typical @ 48 kHz ±0.01 dB 96 kHz mode, typical @ 96 kHz ±0.05 dB 192 kHz mode, typical @ 192 kHz ±0.1 dB Transition Band 48 kHz mode, typical @ 48 kHz 0.5 × fS 24 kHz 96 kHz mode, typical @ 96 kHz 0.5 × fS 48 kHz 192 kHz mode, typical @ 192 kHz 0.5 × fS 96 kHz Stop Band 48 kHz mode, typical @ 48 kHz 0.5465 × fS 26 kHz 96 kHz mode, typical @ 96 kHz 0.6354 × fS 61 kHz 192 kHz mode, typical @ 192 kHz 0.6354 × fS 122 kHz Stop-Band Attenuation 48 kHz mode, typical @ 48 kHz 70 dB 96 kHz mode, typical @ 96 kHz 70 dB 192 kHz mode, typical @ 192 kHz 70 dB Group Delay 48 kHz mode, typical @ 48 kHz 25 ÷ fS 521 μs 96 kHz mode, typical @ 96 kHz 11 ÷ fS 115 μs 192 kHz mode, typical @ 192 kHz 8 ÷ fS 42 μs Rev. B | Page 7 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TEST CONDITIONS ANALOG PERFORMANCE SPECIFICATIONS CRYSTAL OSCILLATOR SPECIFICATIONS DIGITAL SPECIFICATIONS POWER SUPPLY SPECIFICATIONS DIGITAL FILTERS TIMING SPECIFICATIONS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ANALOG-TO-DIGITAL CONVERTERS (ADCs) DIGITAL-TO-ANALOG CONVERTERS (DACs) CLOCK SIGNALS RESET AND POWER-DOWN I2C CONTROL PORT POWER SUPPLY AND VOLTAGE REFERENCE SERIAL DATA PORTS—DATA FORMAT TIME-DIVISION MULTIPLEXED (TDM) MODES DAISY-CHAIN MODE ADDITIONAL MODES CONTROL REGISTERS DEFINITIONS PLL AND CLOCK CONTROL REGISTERS DAC CONTROL REGISTERS ADC CONTROL REGISTERS APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS