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參數資料
| 型號： | ISL5416 |
| 廠商： | Intersil Corporation |
| 英文描述： | Four-Channel Wideband Programmable DownConverter |
| 中文描述： | 四通道可編程寬帶下變頻器 |
| 文件頁數： | 44/71頁 |
| 文件大小： | 2013K |
| 代理商： | ISL5416 |
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44
NOTES ON THRESHOLDS:
The input range is -32768 to 32767 (0x8000 to 0x7FFF)
The magnitude range is 0 to 32768 ( 0x0000 to 0x8000)
The immediate threshold is 0 to 65536 (0x0000 to 0xFFFF)
The magnitude must be greater than the immediate threshold to trigger.
The integration period is 2 to 2
16
.
The integrated magnitude range is 0x00000000 to 0x80000000
The normalization divider range is 2
1
to 2
16
, so with the maximum dividers:
The averaged output is 0x0000 to 0x8000
The upper and lower thresholds are 0 to 65536 (0x0000 to 0xFFFF)
To trigger the upper and lower comparisons:
The magnitude must be greater than the upper threshold.
The magnitude must be less than lower threshold.
TABLE 39. LOWER THRESHOLD, ATTENUATOR CHANGE (IWA = 0*13h)
RESET STATE = 0x00000000h
CONTROL IS SHARED FOR AIN/BIN AND FOR CIN/DIN
THIS
P(31:0)
FUNCTION
31:30
RESERVED. Set to 0.
29:16
ATTENUATION STEP 3.
Amount to decrease the attenuation control register if the average input magnitude is below the lower threshold. 14-bit value loads
the LSBs of a 17-bit accumulator. The 3 MSBs of the 17-bit load are hard-wired to “111” , so the load value should be masked from
a negative number. The MSB of the 14-bit value is weighted at 6 dB so the value at all zeros would be ~12 dB (decrease in
attenuation).
15:0
THRESHOLD 3.
Lower threshold value. If the accumulated and normalized input magnitude is below this value, the attenuation control accumulator is
adjusted by the amount programmed in bits 29:16.
TABLE 40. UPPER THRESHOLD, ATTENUATOR CHANGE (IWA = 0*14h)
RESET STATE = 0x00000000h
CONTROL IS SHARED FOR AIN/BIN AND FOR CIN/DIN
THIS
P(31:0)
FUNCTION
31:30
RESERVED. Set to 0.
29:16
ATTENUATION STEP 2.
Amount to increase the attenuation control register if the average input magnitude is above the upper threshold. 14-bit value loads
the LSBs of a 17-bit accumulator. The 3 MSBs of the 17-bit load are hard-wired to “000” . The MSB of the 14-bit value is weighted at
6 dB so the value at all ones would be ~12 dB (increase in attenuation).
15:0
THRESHOLD 2.
Upper threshold value. If the accumulated and normalized input magnitude is above this value, the attenuation control accumulator
is adjusted by the amount programmed in bits 29:16.
TABLE 41. IMMEDIATE THRESHOLD, ATTENUATOR GAIN (IWA = 0*15h)
RESET STATE = 0x00000000h
CONTROL IS SHARED FOR AIN/BIN AND FOR CIN/DIN
THIS
P(31:0)
FUNCTION
31:30
RESERVED. Set to 0.
29:16
ATTENUATION STEP 1.
Amount to increase the attenuation control register if the sample-by-sample input magnitude is above the immediate threshold. 14-
bit value loads the LSBs of a 17-bit accumulator. The 3 MSBs of the 17-bit load are hard-wired to “000” . The MSB of the 14-bit value
is weighted at 6 dB so the value at all ones would be ~12 dB (increase in attenuation). This change happens immediately. Subsequent
changes due to crossing this threshold are held off by the delay in location IWA = 0*10, bits 31:24.
15:0
THRESHOLD 1.
Immediate threshold value. If the input magnitude is above this value, the attenuation control accumulator is adjusted by the amount
programmed in bits 29:16.
ISL5416
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL5416_04 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Four-Channel Wideband Programmable DownConverter |
| ISL5416EVAL | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Four-Channel Wideband Programmable DownConverter |
| ISL5416EVAL1 | 功能描述:EVALUATION PLATFORM FOR ISL5416 RoHS:是 類別:RF/IF 和 RFID >> RF 評估和開發(fā)套件，板 系列:- 標準包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關產品:- 已供物品:模塊 其它名稱:SER3796 |
| ISL5416KI | 功能描述:上下轉換器 QUAD WIDEBAND DOWN CONVERTER, 256 CABGA RoHS:否 制造商:Texas Instruments 產品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| ISL5416KIZ | 制造商:Intersil Corporation 功能描述:LEAD-FREE QUAD WIDEBAND DOWN CONVERTER, 256 CABGA - Trays 制造商:Intersil Corporation 功能描述:PB-FREE W/ANNEAL QUAD DIGITAL DOWNCONVER 制造商:Intersil 功能描述:QD WIDEB& DWN CNVRTR 256 CABGA |
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