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參數(shù)資料
| 型號(hào)： | MAX5890EGK+D |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT LVDS 600MSPS 68-QFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 30 |
| 設(shè)置時(shí)間： | 11ns |
| 位數(shù)： | 14 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字 |
| 功率耗散（最大）： | 298mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 68-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 68-QFN 裸露焊盤（10x10） |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 2 電流，單極 |
| 采樣率（每秒）： | 600M |
Applications Information
Clock Interface
To achieve the best possible jitter performance, the
MAX5890 features flexible differential clock inputs
(CLKP, CLKN) that operate from a separate clock
power supply (AVCLK). Use a low-jitter clock to reduce
the DAC’s phase noise and wideband noise. To
achieve the best DAC dynamic performance, the
CLKP/CLKN input source must be designed carefully.
The differential clock (CLKN and CLKP) input can be
driven from a single-ended or a differential clock
source. Use differential clock drive to achieve the best
dynamic performance from the DAC. For single-ended
operation, drive CLKP with a low noise source and
bypass CLKN to CGND with a 0.1F capacitor.
Figure 4 shows a convenient and quick way of applying
a differential signal created from a single-ended source
using a wideband transformer. Alternatively, drive
CLKP/CLKN from a CMOS-compatible clock source.
Use sinewave or AC-coupled differential ECL/PECL
drive for best dynamic performance.
Differential Output Coupling Using a
Wideband RF Transformer
Use a pair of transformers (Figure 5) or a differential
amplifier configuration to convert the differential voltage
existing between OUTP and OUTN to a single-ended
voltage. Optimize the dynamic performance by using a
differential transformer-coupled output and limit the out-
put power to < 0dBm full scale. To achieve the best
dynamic performance, use the differential transformer
configuration. Terminate the DAC as shown in Figure 5,
and use 50
termination at the transformer single-
ended output. This will provide double 50
termination
for the DAC output network. With the double-terminated
output and 20mA full-scale current, the DAC will pro-
duce a full-scale signal level of approximately -2dBm.
Pay close attention to the transformer core saturation
characteristics when selecting a transformer for the
MAX5890. Transformer core saturation can introduce
strong 2nd-order harmonic distortion especially at low
output frequencies and high signal amplitudes. For best
results, connect the center tap of the transformer to
ground. When not using a transformer, terminate each
DAC output to ground with a 25
resistor. Additionally,
place a 50
resistor between the outputs (Figure 6).
For a single-ended unipolar output, select OUTP as the
output and connect OUTN to AGND. Operating the
MAX5890 single-ended is not recommended because
it degrades the dynamic performance.
The distortion performance of the DAC depends on the
load impedance. The MAX5890 is optimized for 50
differential double termination. Using higher termination
impedance degrades distortion performance and
increases output noise voltage.
MAX5890
14-Bit, 600Msps, High-Dynamic-Performance
DAC with LVDS Inputs
______________________________________________________________________________________
11
WIDEBAND RF TRANSFORMER
PERFORMS SINGLE-ENDED-TO-
DIFFERENTIAL CONVERSION
SINGLE-ENDED
CLOCK SOURCE
AGND
1:1
25
25
CLKP
CLKN
TO DAC
0.1
F
0.1
F
Figure 4. Differential Clock-Signal Generation
MAX5890
OUTP
OUTN
WIDEBAND RF TRANSFORMER T2 PERFORMS THE
DIFFERENTIAL-TO-SINGLE-ENDED CONVERSION
T1, 1:1
T2, 1:1
AGND
50
100
50
VOUT, SINGLE-ENDED
D0–D13
LVDS
DATA INPUTS
Figure 5. Differential-to-Single-Ended Conversion Using a Wideband RF Transformer
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5890EGK-TD | 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 |
| MAX5890EVKIT# | 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 |
| MAX5890EVKIT-W | 制造商:Maxim Integrated Products 功能描述:- Bulk |
| MAX5891EGK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX5891EGK+D | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit 600Msps 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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