Audio Precision AP 52 B Series - Page 101

82 APx PDM I/O Module for B Series: Specifications
PDM
Technical Specifications
Parameter Symbol Test Conditions Min Typ Max Unit
TRANSMITTER
Decimated Rate
F
S
4216kHz
Bit Clock Rate
F
B
Master or slave mode 0.128 24.576 MHz
INTERPOLATION FILTER
Interpolation Ratio (F
B
/F
S
)
INTR
16, 16.67, 21.33, 24, 25, 32, 33.33,
37.5, 42.67, 48, 50, 62.5, 64, 66.67,
75, 85.33, 96, 100, 125, 128, 150,
192, 200, 250, 256, 300, 384, 400,
500, 512, 600, 768, 800
16 800
Passband Frequency Range 0 0.45
F
S
Passband Gain
INTR = 64, 128, 256, 512 –0.0001 +0.0001 dB
INTR = 32 -0.01 +0.01 dB
All other INTR –0.0063 +0.0001 dB
Stopband Frequency Range 0.55 INTR / 2
F
S
Stopband Attenuation
INTR = 32, 64, 128, 256, 512 115 dB
All other INTR 100 dB
MODULATOR: GENERAL
Passband Frequency Range 0 0.45
F
S
Passband Gain –0.0001 +0.0001 dB
Maximum Input Level MIL 0dBFS
Linearity
–100 dBFS to MIL (order 4, 5) –0.010 +0.001 dB
MIL to 0 dBFS (order 4) –0.010 +0.002 dB
MIL to 0 dBFS (order 5) –0.010 +0.001 dB
Ones Density at Full Scale 99.94 100 %
MODULATOR: ORDER 4, 64x OSR
Overload Point OLP 1 kHz –7.8 dBFS