- 您現在的位置：買賣IC網 > PDF目錄16699 > AFE7222EVM (Texas Instruments)EVAL MODULE FOR AFE7222 PDF資料下載
參數資料
| 型號： | AFE7222EVM |
| 廠商： | Texas Instruments |
| 文件頁數： | 98/106頁 |
| 文件大小： | 0K |
| 描述： | EVAL MODULE FOR AFE7222 |
| 標準包裝： | 1 |
| 主要目的： | 接口，模擬前端（AFE） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | AFE7222 |
| 已供物品： | 板 |
| 其它名稱： | 296-30300 AFE7222EVM-ND |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁當前第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁
TO GET INTO DIRECT ACCESS
MODE
SDATA
SCLK
SEN
AUX DAC A INPUT1
0
1
0
1
DA11 DA10
DA9
DA8
DA7
DA6
DA5
DA4
DA3
DA2
DA1
DA0
AUX DAC B INPUT1
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
DB11
SDOUT
AUXDAC_A
AUXDAC_B
DELAY FOR FIRST UPDATE = 22 CLOCKS
DA10
DA9
DA8
DA7
DA6
DA5
DA4
DA3
DA2
DA1
DA0
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DA11
DB11
DB0
DA10
DA9
DA8
DA7
DA6
DA5
DA4
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB11
DA11
DELAY FOR SUBSEQUENT UPDATE = 12 CLOCKS
AUX DAC A INPUT2
AUX DAC B INPUT2
tPER
tSETTLE
SLOS711B – NOVEMBER 2011 – REVISED MARCH 2012
AUXDAC_A_N is the internal complementary node and has an internal resistor, RINT programmable from
57 Ohm to 400 Ohm (using bits AUX_DAC_TERM_N<2:0>). For best linearity, choose a value of this
resistor to be as close to REXT as possible.
10.10 Enabling the Auxiliary DAC
The Auxiliary DACs are disabled by default.
Note that address of the 20 bit serial interface write bus is the 1st 12 bits out of which the 1st 4 bits
determine the access mode for the Auxiliary DAC.
Let us denote this address as ADDR<11:0>.
Following are Aux DAC modes:
If ADDR<11:8> = 0100, then we enter Direct Access mode for DAC. In this mode, DAC data is
dynamically written through SDATA (and SDOUT).
If ADDR<11:8> = 0101, then we enter the Register Access mode. In this mode, DAC is loaded with the
data from contents of pre-loaded registers.
In direct access mode
If ADDR<7:6> = 01: DAC_A will get written with the 12 serial bits from SDATA, DAC_B will get written
with the 12 serial bits from SDOUT (both at the rising edge of SCLK)
If ADDR<7:6> = 10: DAC_A will get 12 bits from SDATA, DAC_B will get next 12 bits from SDATA
(both at the rising edge of SCLK)
If ADDR<7:6> = 11: DAC_A will get 12 bits from SDATA at the rising edge of SCLK, DAC_B will get 12
bits from SDATA at the falling edge of SCLK.
In register access mode:
ADDR<7:6> = 01: Only DAC_A will be loaded with the register
ADDR<7:6> = 10: Only DAC_B will be loaded
ADDR<7:6> = 11: Both DAC_A and DAC_B are loaded.
For either direct access or register access modes, only the 1st 6 bits of the address need to be written for
the serial interface state machine. Remainig bits are considered as applicable to the DAC data.
Below diagram shows the Aux DAC timing for the direct access mode where DAC_A is written through
SDATA and DAC_B through SDOUT.
Start by already setting EN_AUXDACA and EN_AUXDACB bits high.
Figure 10-18. Aux DAC Timing Diagram: DAC_A is Written Through SDATA and DAC_B Through SDOUT
tPER = SCLK period > 25 ns
tSETTLE = Settling time of Aux DAC for full scale output (0-1.5V) = 40 ns
Copyright 2011–2012, Texas Instruments Incorporated
DIGITAL INTERFACE
91
相關PDF資料 |
PDF描述 |
|---|---|
| ECE-V1EA100NP | CAP ALUM 10UF 25V 20% SMD |
| 0210491116 | CABLE JUMPER 1.25MM .305M 39POS |
| UPM1J270MED1TD | CAP ALUM 27UF 63V 20% RADIAL |
| RNF-100-1-1/4-RD-SP | HEAT SHRINK TUBING |
| RNF-100-1-1/4-BU-SP | HEAT SHRINK TUBING |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AFE7222IRGC25 | 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 |
| 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 |
發布緊急采購，3分鐘左右您將得到回復。