Datasheet

REV. A–2–
AD1835A–SPECIFICATIONS
TEST CONDITIONS
Supply Voltages (AVDD, DVDD) 5.0 V
Ambient Temperature 25°C
Input Clock 12.288 MHz (256 ⫻ f
S
Mode)
ADC Input Signal 1.0078125 kHz, –1 dBFS (Full Scale)
DAC Input Signal 1.0078125 kHz, 0 dBFS (Full Scale)
Input Sample Rate (f
S
) 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).
Parameter Min Typ Max Unit
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
V
REF
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