參數(shù)資料
型號(hào): DAC1408D650HN
廠商: NXP Semiconductors N.V.
元件分類: 外設(shè)及接口
英文描述: Dual 14-bit DAC; up to 650 Msps; 2×, 4× or 8× interpolating
封裝: DAC1408D650HN/C1<SOT804-3|<<<1<Always Pb-free,;DAC1408D650HN/C1<SOT804-3|<<<1<Always Pb-free,;
文件頁(yè)數(shù): 13/98頁(yè)
文件大?。?/td> 2600K
代理商: DAC1408D650HN
DAC1408D650
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 4 — 26 November 2010
13 of 98
NXP Semiconductors
DAC1408D650
2
, 4
or 8
interpolating DAC with JESD204A
10.2.1
Lane input
Each lane is CML compliant. It is terminated to a common voltage with an integrated 50
resistor.
The common-mode voltage is programmable by the SET_VCM_VOLTAGE register as
shown in
Table 75 on page 55
.
DC coupling is only possible if both the DAC and the transmitter have the same
common-mode voltage. If this is not the case, AC coupling is required.
The deserializer performs the incoming data clock recovery and also the serial to parallel
conversion. Therefore, each lane includes its own PLL that must first lock.
The clock alignment module transfers the data from the regenerated clock to the frame
clock domain. The frequency of both clocks is the same but the phase relationship
between the clocks is unknown.
10.2.2
Sync and word align
As stated in JESD204A, the transmitter and the receiver first have to synchronize. This is
achieved through the SYNC_OUT signals and a sync pattern (K28.5 symbol). The
receiver (i.e. DAC1408D650) first drives its SYNC_OUT outputs. The sync pattern is
continuously sent until the receiver de-asserts the SYNC_OUT signal.
Fig 4.
Lane input termination
V
tt
001aak166
50
Ω
Ztt
50
Ω
Vin_p
Vin_n
Fig 5.
DC coupling
Fig 6.
AC coupling
001aak162
50
Ω
50
Ω
50
Ω
50
Ω
Zdiff = 100
Ω
data in +
data in
001aak163
50
Ω
50
Ω
50
Ω
50
Ω
Zdiff = 100
Ω
V
DD1
V
DD2
data in +
data in
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DAC1408D650HN-C18 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
DAC1408D650HW/C1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual 14-bit DAC, up to 650 Msps, 2′ and 4′ interpolating with JESD204A interface