UDA1384H/N1,557 NXP Semiconductors, UDA1384H/N1,557 Datasheet - Page 9

• Manufacturer Part Number: UDA1384H/N1,557
• Description: IC AUDIO CODEC 44-QFP
• Manufacturer: NXP Semiconductors
• Type: Audio Codecr

Specifications of UDA1384H/N1,557

• Data Interface: I²C, Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 5 / 6
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 98 / 110 (Differential), 98 / 110 (Single-Ended)
• Voltage - Supply, Analog: 2.7 V ~ 3.6 V
• Voltage - Supply, Digital: 2.7 V ~ 3.6 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-MQFP, 44-PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3450; 935274756557; UDA1384H

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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