AD1835A–SPECIFICATIONSTEST CONDITIONS Supply Voltages (AVDD, DVDD) 5.0 V Ambient Temperature 25°C Input Clock 12.288 MHz (256 ⫻ fS Mode) ADC Input Signal 1.0078125 kHz, –1 dBFS (Full Scale) DAC Input Signal 1.0078125 kHz, 0 dBFS (Full Scale) Input Sample Rate (fS) 48 kHz Measurement Bandwidth 20 Hz to 20 kHz Word Width 24 Bits Load Capacitance 100 pF Load Impedance 47 k⍀ Performance of all channels is identical (exclusive of the Interchannel Gain Mismatch and Interchannel Phase Deviation specifications). ParameterMinTypMaxUnit ANALOG-TO-DIGITAL CONVERTERS ADC Resolution 24 Bits Dynamic Range (20 Hz to 20 kHz, –60 dB Input) No Filter 100 103 dB A-Weighted (48 kHz and 96 kHz) 105 dB Total Harmonic Distortion + Noise (THD + N) 48 kHz –95 –88.5 dB 96 kHz –95 –87.5 dB Interchannel Isolation 100 dB Interchannel Gain Mismatch 0.025 dB Analog Inputs Differential Input Range (⫾ Full Scale) –2.828 +2.828 V Common-Mode Input Voltage 2.25 V Input Impedance 4 k⍀ Input Capacitance 15 pF VREF 2.25 V DC Accuracy Gain Error ±5 % Gain Drift 35 ppm/°C DIGITAL-TO-ANALOG CONVERTERS DAC Resolution 24 Bits Dynamic Range (20 Hz to 20 kHz, –60 dBFS Input) No Filter 103 105 dB With A-Weighted Filter (48 kHz and 96 kHz) 105 108 dB Total Harmonic Distortion + Noise (48 kHz and 96 kHz) –95 –90 dB Interchannel Isolation 110 dB DC Accuracy Gain Error ⫾4.0 % Interchannel Gain Mismatch 0.025 dB Gain Drift 200 ppm/°C Interchannel Crosstalk (EIAJ Method) –120 dB Interchannel Phase Deviation ⫾0.1 Degrees Volume Control Step Size (1023 Linear Steps) 0.098 % Volume Control Range (Maximum Attenuation) 60 dB Mute Attenuation –100 dB De-emphasis Gain Error ⫾0.1 dB Full-Scale Output Voltage at Each Pin (Single-Ended) 1.0 (2.8) V rms (V p-p) Output Resistance at Each Pin 180 ⍀ Common-Mode Output Voltage 2.25 V ADC DECIMATION FILTER, 48 kHz* Pass Band 21.77 kHz Pass-Band Ripple ⫾0.01 dB Stop Band 26.23 kHz Stop-Band Attenuation 120 dB Group Delay 910 s –2– REV. A Document Outline FEATURES APPLICATIONS PRODUCT OVERVIEW FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS TEMPERATURE RANGE ORDERING GUIDE PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS Typical Performance Characteristics DEFINITIONS Dynamic Range Signal-to-(Total Harmonic Distortion + Noise)[S/(THD + N)] Pass Band Pass-Band Ripple Stop Band Gain Error Interchannel Gain Mismatch Gain Drift Crosstalk (EIAJ Method) Power Supply Rejection Group Delay Group Delay Variation GLOSSARY FUNCTIONAL OVERVIEW ADCs DACs DAC and ADC Coding AD1835A CLOCKING SCHEME Selecting DAC Sampling Rate Selecting an ADC Sample Rate RESET and Power-Down Power Supply and Voltage Reference Serial Control Port Serial Data Ports—Data Format Packed Modes Auxiliary (TDM) Mode CONTROL/STATUS REGISTERS DAC Control Registers Sample Rate Power-Down/Reset DAC Data-Word Width DAC Data Format De-emphasis Mute DAC Stereo Replicate DAC Volume Control ADC Control Registers ADC Peak Level Sample Rate ADC Power-Down High-Pass Filter ADC Data-Word Width ADC Data Format Master/Slave Auxiliary Mode ADC Peak Readback CASCADE MODE Dual AD1835A Cascade OUTLINE DIMENSIONS Revision History
