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參數(shù)資料
| 型號： | ADC1207S080HW |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 外設及接口 |
| 英文描述： | Single 12 bits ADC, up to 80 MHz with direct-ultra high IF sampling |
| 封裝： | ADC1207S080HW/C1<SOT545-2 (HTQFP48)|<<http://www.nxp.com/packages/SOT545-2.html<1<Always Pb-free,;ADC1207S080HW/C1<SOT545-2 (HTQFP48)|<<http://www.nxp.com/packages/SOT545 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 129K |
| 代理商： | ADC1207S080HW |
ADC1207S080_2
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 7 August 2008
16 of 21
NXP Semiconductors
ADC1207S080
Single 12 bits ADC, up to 80 MHz with direct/ultra high IF sampling
12. Application information
12.1 ADC1207S080 in 3G radio receivers
The ADC1207S080 has been proven in many 3G radio receivers with various operating
conditions regarding Input Frequency (IF), signal IF bandwidth and sampling frequency.
The ADC1207S080 is provided with a maximum analog input signal frequency of
400 MHz. It allows a significant cost-down of the RF front-end, from two mixers to only
one, even in multi-carriers architecture.
Table 9
describes some possible applications with the ADC1207S080 in high IF sampling
mode.
[1]
IF bandwidth corresponds to the observed area on the ADC output spectrum.
For a dual carrier Wideband-Code-Division-Multiple-Access (W-CDMA) receiver, the most
important parameters are sensitivity and Adjacent Channel Selectivity (ACS). The
sensitivity is defined as the lowest detectable signal level. In W-CDMA, it can be far below
the noise floor. This difference, between the sensitivity and the noise floor, is defined by
the Sensitivity-to-Noise Ratio (SENR). Its value is negative due to the gain processing.
The Adjacent Channel Power Ratio (ACPR) is the difference between the full-scale
3 dB
peak and the noise floor. It represents the ratio of the adjacent-channel power and the
average power level of the channel. The ACS is defined by the sum of SENR and ACPR.
Table 9.
f
i
(MHz)
350
243.95
96
96
96
80
78.4
70
Examples of possible f
i
, f
clk
, IF BW combinations supported
f
clk
(MHz)
IF BW (MHz)
[1]
80
5.00
9.60
0.25
76.80
1.60
76.80
4.80
76.80
20.00
61.44
10.00
44.80
3.50
40.00
1.25
SNR (dB)
65
71
72
71
68
70
71
72
SFDR (dBc)
71
80
76
77
76
85
76
79
Fig 9.
Adjacent channel sensitivity and ADC sensibility
014aaa434
ACPR
NF
interfering channel
wanted channel
ACS
noise floor
sensibility
thermal noise
SENR
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADC1207S080HW/C1,1 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC SGL 12BIT ADC 80MSPS 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC1207S080HW/C1,118 | 制造商:NXP Semiconductors 功能描述: |
| ADC1207S080HW/C1,5 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC ADC 12BIT 80MHZ SGL 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC1207S080HW/C1,518 | 制造商:NXP Semiconductors 功能描述:Cut Tape 制造商:NXP Semiconductors 功能描述:0 |
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