Datasheet AD1937 (Analog Devices) - 4

AD1937 Parameter Conditions/Comments Min Typ Max Unit
Total Harmonic Distortion + Noise 0 dBFS Two channels running −94 dB Eight channels running −86 −76 dB Full-Scale Output Voltage 1.76 (4.96) V rms (V p-p) Gain Error −10 +10 % Interchannel Gain Mismatch −0.2 +0.2 dB Offset Error −25 −6 +25 mV Gain Drift −30 +30 ppm/°C Interchannel Isolation 100 dB Interchannel Phase Deviation 0 Degrees Volume Control Step 0.375 dB Volume Control Range 95 dB De-emphasis Gain Error ±0.6 dB Output Resistance at Each Pin 100 Ω REFERENCE Internal Reference Voltage FILTR pin 1.50 V External Reference Voltage FILTR pin 1.32 1.50 1.68 V Common-Mode Reference Output CM pin 1.50 V REGULATOR Input Supply Voltage VSUPPLY pin 4.5 5 5.5 V Regulated Output Voltage VSENSE pin 3.19 3.37 3.55 V Specifications measured at −40°C < TC < +125°C, AVDD = 3.3 V ± 10%.
Table 3. −40°C < TC < +125°C, AVDD = 3.3 V ± 10% Parameter Conditions/Comments Min Max Units
ANALOG-TO-DIGITAL CONVERTERS ADC Resolution All ADCs 24 Bits Dynamic Range 20 Hz to 20 kHz, −60 dB No Filter (RMS) 93 dB With A-Weighted Filter (RMS) 95 dB Total Harmonic Distortion + Noise −1 dBFS −85 dB Full-Scale Input Voltage (Differential) 1.75 2.05 V rms Gain Error −10 +10 % Interchannel Gain Mismatch −0.46 +0.25 dB Offset Error −10 +10 mV Gain Drift 100 ppm/°C Interchannel Isolation −105 dB CMRR 100 mV rms, 1 kHz 42 dB 100 mV rms, 20 kHz 42 dB Input Resistance By design kΩ Input Capacitance By design pF Input Common-Mode Bias Voltage 1.45 1.55 V dc DIGITAL-TO-ANALOG CONVERTERS DAC Resolution All DACs 24 Bits Dynamic Range 20 Hz to 20 kHz, −60 dB No Filter (RMS) 100 dB With A-Weighted Filter (RMS) 104 dB With A-Weighted Filter (Average) 109 dB Total Harmonic Distortion + Noise 0 dBFS Two channels −84 dB Eight channels −76 dB Rev. B | Page 4 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