Datasheet

REV. B
–2–
AD1895–SPECIFICATIONS
TEST CONDITIONS, UNLESS OTHERWISE NOTED.
Supply Voltages
VDD_CORE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 V
VDD_IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0 V or 3.3 V
Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25°C
Input Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.0 MHz
Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . 1.000 kHz, 0 dBFS
Measurement Bandwidth . . . . . . . . . . . . . . . . . . 20 to f
S_OUT
/2 Hz
Word Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bits
Load Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 pF
Input Voltage High . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4 V
Input Voltage Low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 V
DIGITAL PERFORMANCE (VDD_CORE = 3.3 V  5%, VDD_IO = 5.0 V  10%)
Parameter Min Typ Max Unit
RESOLUTION 24 Bits
SAMPLE RATE @ MCLK_IN = 30 MHz 6 215 kHz
SAMPLE RATE (@ OTHER MASTER CLOCKS)
1
MCLK_IN/5000 ≤ f
S_MAX
< MCLK_IN/138 kHz
SAMPLE RATE RATIOS
Upsampling 1:8
Downsampling 7.75:1
DYNAMIC RANGE
2
(20 Hz to f
S_OUT
/2, 1 kHz, –60 dBFS Input) A-Weighted
44.1 kHz: 48 kHz 128 dB
48 kHz: 44.1 kHz 128 dB
48 kHz: 96 kHz 128 dB
44.1 kHz: 192 kHz 128 dB
96 kHz: 48 kHz 127 dB
192 kHz: 32 kHz 127 dB
(20 Hz to f
S_OUT
/2, 1 kHz, –60 dBFS Input) No Filter
44.1 kHz: 48 kHz 125 dB
48 kHz: 44.1 kHz 125 dB
48 kHz: 96 kHz 125 dB
44.1 kHz: 192 kHz 125 dB
96 kHz: 48 kHz 124 dB
192 kHz: 32 kHz 124 dB
TOTAL HARMONIC DISTORTION + NOISE
2
(20 Hz to f
S_OUT
/2, 1 kHz, 0 dBFS Input) No Filter
Worst-Case (48 kHz: 96 kHz)
3
–115 dB
44.1 kHz: 48 kHz –120 dB
48 kHz: 44.1 kHz –119 dB
48 kHz: 96 kHz –118 dB
44.1 kHz: 192 kHz –120 dB
96 kHz: 48 kHz –122 dB
192 kHz: 32 kHz –122 dB
INTERCHANNEL GAIN MISMATCH 0.0 dB
INTERCHANNEL PHASE DEVIATION 0.0 Degrees
MUTE ATTENUATION (24 BITS WORD WIDTH)(A-WEIGHT) –127 dB
NOTES
1
Lower sampling rates than those given by this formula are possible, but the jitter rejection will decrease.
2
Refer to the Typical Performance Characteristics section for DNR and THD + N numbers over a wide range of input and output sample rates.
3
For any other ratio, minimum THD + N will be better than –115 dB. Please refer to detailed performance plots.
Specifications subject to change without notice.