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| 型號： | UDA1334BT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | DAC |
| 英文描述： | Low power audio DAC |
| 中文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PDSO16 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT-109-1, SOP-16 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 108K |
| 代理商： | UDA1334BT |
2002 May 22
7
Philips Semiconductors
Product specification
Low power audio DAC
UDA1334BT
8
FUNCTIONAL DESCRIPTION
8.1
System clock
The UDA1334BT operates in slave mode only; this means
that in all applications the system must provide the system
clock and the digital audio interface signals
(BCK and WS).
Thesystemclockmustbelockedinfrequencytothedigital
interface signals.
The UDA1334BT automatically detects the ratio between
the SYSCLK and WS frequencies.
The BCK clock can be up to 64f
s
, or in other words the
BCK frequency is 64 times the Word Select (WS)
frequency or less: f
BCK
≤
64
×
f
WS
.
Remarks:
1.
The WS edge MUST fall on the negative edge of the
BCK at all times for proper operation of the digital I/O
data interface
2.
For LSB-justified formats it is important to have a WS
signal with a duty factor of 50%.
The modes which are supported are given in Table 1.
Table 1
Supported sampling ranges
Notes
1.
This mode can only be supported for power supply
voltages down to 2.4 V. For lower voltages, in
192f
s
mode the sampling frequency should be limited
to 55 kHz.
Not supported in the low sampling frequency mode.
2.
An example is given in Table 2 for a 12.228 MHz system
clock input.
Table 2
Example using a 12.228 MHz system clock
Note
1.
This mode can only be supported for power supply
voltages down to 2.4 V. For lower voltages, in 192f
s
mode the sampling frequency should be limited to
55 kHz.
8.2
Interpolation filter
The interpolation digital filter interpolates from 1f
s
to 64f
s
by cascading FIR filters (see Table 3).
Table 3
Interpolation filter characteristics
8.3
Noise shaper
The 5th-order noise shaper operates at 64f
s
. It 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 noise shaper
output is converted into an analog signal using a
Filter Stream DAC (FSDAC).
CLOCK MODE
SAMPLING RANGE
768f
s
512f
s
384f
s
256f
s
192f
s
128f
s
8 to 55 kHz
8 to 100 kHz
8 to 100 kHz
8 to 100 kHz
8 to 100 kHz
(1)(2)
8 to 100 kHz
(2)
CLOCK MODE
SAMPLING FREQUENCY
128f
s
192f
s
256f
s
384f
s
512f
s
768f
s
96 kHz
64 kHz
(1)
48 kHz
32 kHz
24 kHz
16 kHz
ITEM
CONDITION
VALUE (dB)
±
0.02
50
>114
Pass-band ripple
Stop band
Dynamic range
0 to 0.45f
s
>0.55f
s
0 to 0.45f
s
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| UDA1334BT/N2 | 制造商:NXP Semiconductors 功能描述:IC DAC AUDIO LP 16-SOIC |
| UDA1334BT/N2,112 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC LOW POWER AUDIO DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| UDA1334BT/N2,118 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC LOW POWER AUDIO DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| UDA1334BTD | 功能描述:數(shù)模轉(zhuǎn)換器- DAC LOW POWER AUDIO DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| UDA1334BTS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low power audio DAC |
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