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參數(shù)資料
| 型號： | MAX1429 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | ADC |
| 英文描述： | 15-Bit, 100Msps ADC with -77.7dBFS Noise Floor for Baseband Applications |
| 中文描述： | 15位、100Msps ADC，具有-77.7dBFS的噪聲底，適合基帶系統(tǒng) |
| 文件頁數(shù)： | 13/18頁 |
| 文件大?。?/td> | 219K |
| 代理商： | MAX1429 |
M
15-Bit, 100Msps ADC with -77.7dBFS
Noise Floor for Baseband Applic ations
______________________________________________________________________________________
13
However, the larger the turns ratio, the larger the effect
of the differential input resistance of the MAX1429 on
the primary referred input resistance. At a turns ratio of
1:4.47, the 1k
differential input resistance of the
MAX1429 by itself results in a primary referred input
resistance of 50
.
Although the center tap of the transformer in Figure 6 is
shown floating, it may be AC-coupled to ground.
However experience has shown that better balance is
achieved if the center tap is left floating.
As stated previously, the signal inputs to the MAX1429
must be accurately balanced to achieve the best even-
order distortion performance. Figure 7 provides
improved balance over the circuit of Figure 6 by adding
a balun on the primary side of the transformer, and can
yield substantial improvement in even-order distortion
terms over the circuit of Figure 6.
One note of caution in relation to transformers is impor-
tant. Any DC current passed through the primary or
secondary windings of a transformer may magnetically
bias the transformer core. When this happens, the
transformer is no longer accurately balanced and a
degradation in the distortion of the MAX1429 may be
observed. The core must be demagnetized in order to
return to balanced operation.
MAX1429
56
56
0.1
μ
F
0.1
μ
F
0.01
μ
F
T2-1T–KK81
15
D0–D14
AV
CC
DV
CC
DRV
CC
GND
CLKP
CLKN
INP
INN
SINGLE-ENDED
INPUT TERMINAL
Figure 6. Transformer-Coupled Analog Input Configuration
MAX1429
56
56
0.1
μ
F
0.1
μ
F
0.1
μ
F
T2-1T–KK81
T2-1T–KK81
15
D0–D14
AV
CC
DV
CC
DRV
CC
GND
CLKP
CLKN
INP
INN
POSITIVE
TERMINAL
Figure 7. Transformer-Coupled Analog Input Configuration with Primary-Side Transformer
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1429ETN | 15-Bit, 100Msps ADC with -77.7dBFS Noise Floor for Baseband Applications |
| MAX1430 | 15-Bit, 100Msps ADC with -77.7dBFS Noise Floor for Baseband Applications |
| MAX1444 | 10-Bit, 40Msps, 3.0V, Low-Power ADC with Internal Reference |
| MAX1444EHJ | 10-Bit, 40Msps, 3.0V, Low-Power ADC with Internal Reference |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1429ETN+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1429ETN+TD | 制造商:Maxim Integrated Products 功能描述:ADC SGL PIPELINED 100MSPS 15-BIT PARALLEL 56TQFN EP - Tape and Reel |
| MAX1429ETN-D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1429ETN-TD | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1430ETN+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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