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參數資料
| 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： | 8/24頁 |
| 文件大小： | 108K |
| 代理商： | UDA1334BT |
2002 May 22
8
Philips Semiconductors
Product specification
Low power audio DAC
UDA1334BT
8.4
Filter stream DAC
The FSDAC is a semi-digital reconstruction filter that
converts the 1-bit data stream of the noise shaper to an
analog output voltage. The filter coefficients are
implemented as current sources and are summed at
virtual ground of the output operational amplifier. In this
way very high signal-to-noise performance and low clock
jitter sensitivity is achieved. No post-filter is needed due to
the inherent filter function of the DAC. On-board amplifiers
convert the FSDAC output current to an output voltage
signal capable of driving a line output.
The output voltage of the FSDAC scales proportionally
with the power supply voltage.
8.5
Power-on reset
The UDA1334BT has an internal Power-on reset circuit
(see Fig.3) which resets the test control block.
The reset time (see Fig.4) is determined by an external
capacitor which is connected between pin V
ref(DAC)
and
ground. The reset time should be at least 1
μ
s for
V
ref(DAC)
< 1.25 V. When V
DDA
is switched off, the device
will be reset again for V
ref(DAC)
< 0.75 V.
During the reset time the system clock should be running.
handbook, halfpage
VDDA
Vref(DAC)
13
12
MGU678
UDA1334BT
C1
>
10
μ
F
RESET
CIRCUIT
50 k
50 k
Fig.3 Power-on reset circuit.
handbook, halfpage
(V)
1.5
0
t
3.0
VDDA
(V)
1.5
0
t
3.0
Vref(DAC)
(V)
1.5
1.25
0.75
0
t
MGL984
>
1
μ
s
Fig.4 Power-on reset timing.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| UDA1334BT/N2 | 制造商:NXP Semiconductors 功能描述:IC DAC AUDIO LP 16-SOIC |
| UDA1334BT/N2,112 | 功能描述:數模轉換器- DAC LOW POWER AUDIO DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩定時間: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/模轉換器 IC LOW POWER AUDIO DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量: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:數模轉換器- DAC LOW POWER AUDIO DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩定時間: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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