参数资料
| 型号： | AFE7222IRGCT |
| 厂商： | Texas Instruments |
| 文件页数： | 103/106页 |
| 文件大小： | 0K |
| 描述： | IC AFE 12BIT 65/130MSPS 64VQFN |
| 标准包装： | 1 |
| 位数： | 12 |
| 通道数： | 4 |
| 功率（瓦特）： | 610mW |
| 电压 - 电源，模拟： | 2.85 V ~ 3.6 V |
| 电压 - 电源，数字： | 1.7 V ~ 1.9 V |
| 封装/外壳： | 64-VFQFN 裸露焊盘 |
| 供应商设备封装： | 64-VQFN 裸露焊盘（9x9） |
| 包装： | 标准包装 |
| 其它名称： | 296-30113-6 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页当前第103页第104页第105页第106页
DAC_DCLKIN
DACDATA <11:0>
A
B
A
B
A
B
SLOS711B – NOVEMBER 2011 – REVISED MARCH 2012
C<8> = Bit D2 of regster address 03F
C<7> = Bit D1 of regster address 03F
C<6> = Bit D0 of regster address 03F
C<5> = Bit D7 of regster address 040
C<4> = Bit D6 of regster address 040
C<3> = Bit D5 of regster address 040
C<2> = Bit D4 of regster address 040
C<1> = Bit D3 of regster address 040
C<0> = Bit D2 of regster address 040
For example, programming registers (Address 03F Data 29) and (Address 040 Data 34) replaces the
normal ADC data for both channels with the static binary code 101001001101.
DAC input format:
The DAC input format is also 2s complement similar to the ADC.
Full scale DAC current:
The full scale DAC current (IOUTFS) is set by the resistor (of value RBIASJ) on the BIASJ pin.
IOUTFS = 19.2/RBIASJ.
For RBIASJ=960
Ω, IOUTFS = 20 mA
For the 12-bit input code (where CODE is the decimal representation of the DAC data input word in
straight offset binary format):
IOUTP = IOUTFS × CODE / 4096
IOUTN = IOUTFS × (4096 – CODE) / 4096
TX data input (CMOS mode):
The TX input data format is also DDR CMOS. The rising edge of the DAC_DCLKIN latches the Channel A
data inside the AFE7225/7222, and the falling edge latches the Channel B data. The clock rate of
DAC_DCLKIN is same as the input clock rate when interpolation is not set. When 2X interpolation is set, it
should be half the input clock rate, and when 4X interpolation is set, it should be one-fourth the input clock
rate.
Figure 11-2. TX CMOS Input Interface
Interpolation:
While interpolating by a factor of 2, the DAC_DCLKIN rate should be set to half of the input clock rate.
The 2X interpolation mode on the TX side can be set by the following register : Address 106, Data 05.
Powerdown modes:
The device has several powerdown modes which provide a tradeoff between power consumed and speed
of recovery from powerdown. The nature of the powerdown mode can be set through the registers. Also
the assertion of the powerdown can be done either through the PDN pin or through a register bit.
While using the PDN pin to control the powerdown state, the following are the register configurations (see
specifications table for recovery times)
Global powerdown mode through PDN pin : Set Address 207, Data 20, and control PDN pin to assert/
de-assert global powerdown mode. Most functions are shutdown.
96
QUICK GUIDE
Copyright 2011–2012, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| ALD2502PBL | IC TIMER CMOS DUAL HS 14PDIP |
| ALD4501PEL | IC TIMER PREC CMOS QUAD 20PDIP |
| ALD500AUSWCL | IC ADC 18BIT DUAL 16WSOIC |
| ALD500RAU-10SEL | IC ADC 18BIT 20SOIC |
| ALD555PAL | IC TIMER PREC CMOS SGL HS 8PDIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AFE7225 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Analog Front End Wideband Mixed-Signal Transceiver |
| AFE7225EVM | 功能描述:射频开发工具 AFE7225 Eval Mod RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| AFE7225IRGC25 | 功能描述:射频前端 Dual 12B,125MSPS ADC RoHS:否 制造商:Skyworks Solutions, Inc. 类型: 工作频率:2.4 GHz, 5 GHz 最大数据速率:54 Mbps 噪声系数: 工作电源电压:3.3 V 电源电流:180 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-32 |
| AFE7225IRGCR | 功能描述:射频前端 Dual 12B,125MSPS ADC RoHS:否 制造商:Skyworks Solutions, Inc. 类型: 工作频率:2.4 GHz, 5 GHz 最大数据速率:54 Mbps 噪声系数: 工作电源电压:3.3 V 电源电流:180 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-32 |
| AFE7225IRGCT | 功能描述:射频前端 Dual 12B,125MSPS ADC RoHS:否 制造商:Skyworks Solutions, Inc. 类型: 工作频率:2.4 GHz, 5 GHz 最大数据速率:54 Mbps 噪声系数: 工作电源电压:3.3 V 电源电流:180 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-32 |
发布紧急采购，3分钟左右您将得到回复。