Datasheet

–2–
REV. A
AD1854–SPECIFICATIONS
TEST CONDITIONS UNLESS OTHERWISE NOTED
Supply Voltages (AV
DD
, DV
DD
) 5.0 V
Ambient Temperature 25°C
Input Clock 12.288 MHz (256 × F
S
Mode)
Input Signal 1.0013 kHz
–0.5 dB Full Scale
Input Sample Rate 48 kHz
Measurement Bandwidth 20 Hz to 20 kHz
Word Width 20 Bits
Load Capacitance 100 pF
Load Impedance 47 kΩ
Input Voltage HI 2.4 V
Input Voltage LO 0.8 V
Performance of right and left channels are identical (exclusive of the Interchannel Gain Mismatch and Interchannel Phase Deviation specifications).
ANALOG PERFORMANCE
Min Typ Max Unit
Resolution 20 Bits
Signal-to-Noise Ratio (20 Hz to 20 kHz)
No Filter (AD1854JRS) 105 dB
No Filter (AD1854KRS) 110 dB
With A-Weighted Filter (AD1854JRS) 108 dB
With A-Weighted Filter (AD1854KRS) 112 dB
Dynamic Range (20 Hz to 20 kHz, –60 dB Input)
No Filter (AD1854JRS) 105 dB
No Filter (AD1854KRS) 106 110 dB
With A-Weighted Filter (AD1854JRS) 108 dB
With A-Weighted Filter (AD1854KRS) 108 113 dB
Total Harmonic Distortion + Noise (AD1854JRS) V
O
= 0 dB –88 –97 dB
Total Harmonic Distortion + Noise (AD1854KRS) V
O
= 0 dB –94 –101 dB
Total Harmonic Distortion + Noise (AD1854JRS and –89 dB
AD1854KRS) V
O
= –20 dB
Total Harmonic Distortion + Noise (AD1854JRS and –49 dB
AD1854KRS) V
O
= –60 dB
Analog Outputs
Differential Output Range (± Full Scale) 5.6 V p-p
Output Impedance at Each Output Pin <200 Ω
Output Capacitance at Each Output Pin 20 pF
Out-of-Band Energy (0.5 × F
S
to 100 kHz) –72.5 dB
CMOUT 2.25 V
DC Accuracy
Gain Error –11.0 ± 3.0 +11.0 %
Interchannel Gain Mismatch –0.15 +0.15 dB
Gain Drift 200 300 ppm/°C
Interchannel Crosstalk (EIAJ Method) –120 dB
Interchannel Phase Deviation ± 0.1 Degrees
Mute Attenuation –100 dB
De-Emphasis Gain Error ± 0.1 dB
DIGITAL I/O (0C to 70C)
Min Typ Max Unit
Input Voltage HI (V
IH
) 2.2 V
Input Voltage LO (V
IL
) 0.8 V
High Level Output Voltage (V
OH
) I
OH
= 1 mA 2.0 V
Low Level Output Voltage (V
OL
) I
OL
= 1 mA 0.4 V
Input Leakage (I
IH
@ V
IH
= 2.4 V) 10 µA
Input Leakage (I
IL
@ V
IL
= 0.8 V) 10 µA
Input Capacitance 20 pF