參數資料
型號： AFE7222IRGC25
廠商： Texas Instruments
文件頁數： 77/106頁
文件大?。?/td> 0K
描述： IC AFE 12BIT 65/130MSPS 64VQFN
標準包裝： 1
位數： 12
通道數： 4
功率（瓦特）： 610mW
電壓 - 電源，模擬： 2.85 V ~ 3.6 V
電壓 - 電源，數字： 1.7 V ~ 1.9 V
封裝/外殼： 64-VFQFN 裸露焊盤
供應商設備封裝： 64-VQFN 裸露焊盤（9x9）
包裝： 標準包裝
其它名稱： 296-30067-6
COARSE_PWR_OP_I (3:0)
COARSE_PWR_OP_Q (3:0)
PWR_METER_COARSE_SAMPLES(2:0)
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Power Meter 1
Power Meter 2
Complex mode
0
SLOS711B – NOVEMBER 2011 – REVISED MARCH 2012
MIXING MODE
MIXING
MIXING PATTERN(1)
Iout = { +A, +A , +A, +A }
00
Normal (Low Pass, No Mixing)
Qout = { +B, +B , +B, +B }
Iout = { +A, –A , +A, –A }
01
High Pass (Fs/2)
Qout = { +B, –B , +B, –B }
Iout = { +A, –B , –A, +B }
10
+Fs/4
Qout = { +B, +A , –B, –A }
Iout = { +A, +B , –A, –B }
11
–Fs/4
Qout = { +B, –A , –B, +A }
(1)
A and B are the inputs to the CMIX block. Iout and Qout are the outputs.
9.7
RMS POWER METER
The RX signal chain has two power meters – the coarse power meter and fine power meter.
9.7.1
Coarse Power Meter
The fine power meter estimates the total integrated power in linear scale based on a much larger set of
samples. The resulting integrated power number is stored in a register for readout. The interval time (how
often to start integration) and integration time (number of samples to integrate) is programmable. The
power meter can be configured in either real mode (where the power of each channel is calculated
individually) or in a complex mode {where the power of (I^2+Q^2) is calculated}. This is illustrated below.
Figure 9-3. Coarse Power Meter
9.7.2
Fine Power Meter
The fine power meter estimates the total integrated power in linear scale based on a much larger set of
samples. The resulting integrated power number is stored in a register for readout. The interval time (how
often to start integration) and integration time (number of samples to integrate) is programmable. The
power meter can be configured in either real mode (where the power of each channel is calculated
individually) or in a complex mode {where the power of (I2+Q2)is calculated}. This is illustrated below.
72
APPLICATION INFORMATION
Copyright 2011–2012, Texas Instruments Incorporated
Product Folder Link(s): AFE7222 AFE7225
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相關代理商/技術參數
參數描述
AFE7222IRGCR 功能描述:射頻前端 Dual 12B,65MSPS ADC RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數據速率:54 Mbps 噪聲系數: 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-32
AFE7222IRGCT 功能描述:射頻前端 Dual 12B,65MSPS ADC RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數據速率:54 Mbps 噪聲系數: 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-32
AFE7225 制造商:TI 制造商全稱:Texas Instruments 功能描述:Analog Front End Wideband Mixed-Signal Transceiver
AFE7225EVM 功能描述:射頻開發(fā)工具 AFE7225 Eval Mod RoHS:否 制造商:Taiyo Yuden 產品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V
AFE7225IRGC25 功能描述:射頻前端 Dual 12B,125MSPS ADC RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數據速率:54 Mbps 噪聲系數: 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-32
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