UDA1384H NXP Semiconductors, UDA1384H Datasheet - Page 9

• Manufacturer Part Number: UDA1384H
• Description: Encoders, Decoders, Multiplexers & Demultiplexers LO CST MULTICH CODEC
• Manufacturer: NXP Semiconductors

Specifications of UDA1384H

• Maximum Operating Temperature: + 85 C
• Package / Case: SOT-307
• Minimum Operating Temperature: - 20 C
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Details
• Other names: UDA1384H/N1,557

Philips Semiconductors
9397 750 14366
Product data sheet
8.6 Interpolation filter of DAC
8.7 Noise shaper of DAC
8.8 Digital mixer
Table 8:
The digital interpolation filter interpolates from 1f
sampling mode) by cascading FIR filters, and has two sets of filter coefficients for sharp
and slow roll-off as given in
Table 9:
Table 10:
The 3rd-order noise shaper operates at either 128f
mode), and converts the 24-bit input signal into a 5-bit signal stream. The noise shaper
shifts in-band quantization noise to frequencies well above the audio band. This noise
shaping technique enables high signal-to-noise ratios to be achieved.
The UDA1384 has 6 digital mixers inside the interpolator (see
can be mixed with the I
selected by the bits MIX[1:0].
Item
Pass-band ripple
Pass-band droop
Stop band
Dynamic range
Item
Pass-band ripple
Stop band
Dynamic range
Item
Pass-band ripple
Pass-band droop
Stop band
Dynamic range
Decimation filter characteristics (voice ADC)
Interpolation filter characteristics (sharp roll-off)
Interpolation filter characteristics (slow roll-off)
Rev. 02 — 17 January 2005
2
S-bus input signals. The mixing of the ADC signals can be
Table 9
Condition
0f
0.45f
> 0.55f
0f
Condition
0f
> 0.55f
0f
Condition
0f
0.45f
> 0.78f
0f
s
s
s
s
s
s
to 0.45f
to 0.45f
to 0.45f
to 0.45f
to 0.22f
to 0.22f
s
s
and
s
s
s
s
s
s
s
s
s
Table
10.
s
to 128f
s
or 64f
Multichannel audio coder-decoder
s
s
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
(or to 64f
(in the 192 kHz sampling
Value (dB)
> 110
Value (dB)
> 135
Value (dB)
> 135
0.05
0.2
65
0.002
75
0.002
3.1
94
Figure
s
4). The ADC signals
in the 192 kHz
UDA1384
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