參數(shù)資料
型號(hào)： 935261615118
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： 7.50 MM, PLASTIC, SO-28
文件頁(yè)數(shù)： 27/48頁(yè)
文件大?。?/td> 356K
代理商： 935261615118
1998 Oct 06
33
Philips Semiconductors
Preliminary specication
Universal Serial Bus (USB)
Digital-to-Analog Converter (DAC)
UDA1321
Notes
1. A 3rd overtone crystal of 48 MHz must be used in combination with a filter connected to the oscillator output (XTAL2),
(L = 1.5
H ±10%; C = 10 nF ±10%). The series resistance of the crystal must be below 60 . Cxtal1 = 4.7 pF ±10%;
Cxtal2 =12pF ±10%).
2. Strongly depends on the external decoupling capacitor connected to Vref.
3. Use for calculation of the power-on reset set-up time the Cref value in F.
4. The audio information from the USB interface is fed directly to the ADAC.
APPLICATION INFORMATION
The UDA1321 is designed to be used as a self-powered device.
The I2C-bus EEPROM is optional and can be used e.g. to program your own Vendor ID and Product ID. In order to help
customers with defining there own configuration map, a special program called ‘Configuration map editor’ has been
developed. It is available from your local Philips Semiconductors Field Application Engineer.
More information about the firmware, descriptors and configurations can be obtained from several application notes.
(THD + N)/S total harmonic distortion-plus-noise
to signal ratio
fs = 44.1 kHz;
RL =5k
at input signal of
1 kHz (0 dB)
90(4)
80
dB
0.0032
0.01
%
at input signal of
1 kHz (
60 dB)
30(4)
20
dB
3.2
10
%
S/Nbz
signal-to-noise ratio at bipolar zero
A-weighted at
code 0000H
90
95
dBA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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