Datasheet

AD1974 Data Sheet
Rev. D | Page 4 of 24
Specifications measured at 125°C (case).
Table 2.
Parameter Conditions Min Typ Max Unit
ANALOG-TO-DIGITAL CONVERTERS
ADC Resolution All ADCs 24 Bits
Full-Scale Input Voltage (Differential) 1.9 V rms
Dynamic Range
20 Hz to 20 kHz, −60 dB input
No Filter (RMS) 95 102 dB
With A-Weighted Filter (RMS) 97 105 dB
Total Harmonic Distortion + Noise (THD + N) −1 dBFS −96 −87 dB
Gain Error −10 +10 %
Interchannel Gain Mismatch
−0.25
+0.25
dB
Offset Error −10 0 +10 mV
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
CRYSTAL OSCILLATOR SPECIFICATIONS
Table 3.
Parameter Min Typ Max Unit
Transconductance 3.5 Mmhos
DIGITAL INPUT/OUTPUT SPECIFICATIONS
−40°C < T
C
< +125°C, DVDD = 3.3 V ± 10%.
Table 4.
Parameter Conditions/Comments Min Typ Max Unit
Input Voltage High (V
IH
) 2.0 V
Input Voltage High (V
IH
) MCLKI pin 2.2 V
Input Voltage Low (V
IL
) 0.8 V
Input Leakage I
IH
@ V
IH
= 2.4 V 10 µA
I
IL
@ V
IL
= 0.8 V 10 µA
High Level Output Voltage (V
OH
) I
OH
= 1 mA DVDD − 0.60 V
Low Level Output Voltage (V
OL
) I
OL
= 1 mA 0.4 V
Input Capacitance 5 pF