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參數(shù)資料
| 型號(hào)： | MAX1428ETN |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 15-Bit, 80Msps ADC with -78.4dBFS Noise Floor for IF Applications |
| 中文描述： | 1-CH 15-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, QCC56 |
| 封裝： | 8 X 8 MM, 0.80 MM HEIGHT, MO-220WLLD-5, TQFN-56 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大?。?/td> | 717K |
| 代理商： | MAX1428ETN |
M
15-Bit, 80Msps ADC with -78.4dBFS
Noise Floor for IF Applications
______________________________________________________________________________________
13
turns ratio, the larger the effect of the differential input
resistance of the MAX1428 on the primary referred
input resistance. At a turns ratio of 1:4.47, the 1k
dif-
ferential input resistance of the MAX1428 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 MAX1428
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 MAX1428 may be
observed. The core must be demagnetized to return to
balanced operation.
MAX1428
56
56
0.1
μ
F
0.1
μ
F
0.1
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
MAX1428
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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1428ETN+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1428ETN+TD | 制造商:Maxim Integrated Products 功能描述:ADC SGL PIPELINED 80MSPS 15-BIT PARALLEL 56TQFN EP - Tape and Reel |
| MAX1428ETN-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 |
| MAX1428ETN-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 |
| MAX1429ETN+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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