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| 型號(hào)： | DAC1627D1G25 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | DAC |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.02 us SETTLING TIME, 16-BIT DAC, PQCC72 |
| 封裝： | 10 X 10 MM, 0.85 MM HEIGHT, PLASTIC, SOT813-3, HVQFN-72 |
| 文件頁數(shù)： | 36/69頁 |
| 文件大?。?/td> | 1677K |
| 代理商： | DAC1627D1G25 |
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DAC1627D1G25
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Objective data sheet
Rev. 1 — 29 April 2011
36 of 69
NXP Semiconductors
DAC1627D1G25
Dual 16-bit DAC: up to 1.25 Gsps; x2, x4 and x8 interpolating
10.16.4
IQ-modulator - AC interface
When the IQ-modulator common-mode voltage is close to ground, the DAC1627D1G25
must be used AC-coupled and the auxiliary DACs are required for local oscillator
cancellation.
Figure 29
shows an example of a connection to an IQ-modulator with a 0.5 V common
input level and auxiliary DACs.
10.17 Design recommendations
10.17.1
Power and grounding
Use a separate power supply regulator for the generation of the 1.8 V analog power
(pins 65, 62, 55, 69, 72 and 58) and the 1.8 V digital power (pins 12, 19, 36, 26 and 43) to
ensure optimal performance.
Also, include individual LC decoupling for the following six sets of power pins:
V
DDA(1V8)_P1
(pin 62)
V
DDA(1V8)_P2
(pin 65)
V
DDA(1V8)
(pins 55, 69, 72 and 58)
V
DDD(1V8)
(core: pins 12, 26 and 43)
V
DDD(1V8)
(LVDS: pins 19 and 36)
V
DDA(3V3)
(pins 59 and 68)
At least two capacitors must be used for each power pin decoupling. These capacitors
must be located as close as possible to the DAC1627D1G25 power pins.
Fig 29. IQ-modulator: AC interface with a 0.5 V common input level and auxiliary DACs
IOUTAP/IOUTBP
3.3 V
DAC1627D
65.5 Ω
65.5 Ω
5 V
2 kΩ
2 kΩ
34 Ω
34 Ω
174 Ω
174 Ω
IOUTAN/IOUTBN
AUXAP/AUXBP
AUXAN/AUXBN
BBAP/BBBP
BBAP/BBAN
BBBP/BBBN
V
I(cm)
= 0.5 V
V
I(dif)
= 1.96 V
offset correction = up to 70 mV
IOUTAP/IOUTAN
IOUTBP/IOUTBN
V
O(cm)
= 2.65 V
V
O(dif)
= 1.96 V
BBAN/BBBN
001aan842
10 nF
10 nF
0 mA to 20 mA
1.1 mA (typical)
IQ-modulator (V
I(cm)
= 0.5 V)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC1627D1G25/DB,598 | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 DAC DEMOBOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| DAC1627D1G25HN/C1, | 功能描述:調(diào)節(jié)器/解調(diào)器 DUAL 16b 1.25GSPS to 1.25 Gsps RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| DAC1627D1G25HN/C1,551 | 功能描述:調(diào)節(jié)器/解調(diào)器 Dual 16-bit DAC, up to 1.25 Gsps RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| DAC1627D1G25HN-C1 | 功能描述:數(shù)模轉(zhuǎn)換器- 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(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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