收藏本站
ISL5239
pre-distorter. The pre-distorter block diagram is shown in
Figure 4.
IF Converter (IFC)
The output of the pre-distorter is a complex baseband signal
FROM
I
sampled at the system CLK rate. To provide greater system
IFIP
Q
I
flexibility, the IF Converter function can change this in one of
three different ways, providing frequency shifts, sample rate
CM TEST
I
Q
LUT
ADDRESS
Q
changes and complex to real conversions.
Real 1X
TEST
FUNC. SEL.
OFFSET
SCALE
PD MAG.
LUT DATA I
LUT DATA Q
LUT DELTA DATA I
LUT DELTA DATA Q
CALCULATION
POWER
ADDR
LUT
BYPASS
The real 1x operating mode shifts the signal up by Fs/4 and
performs a complex to real conversion without changing the
base sample rate. This mode has 1/2 the bandwidth of the
original input signal, with the I output channel active and the
Q output channel set to 0. The operation of the IF converter
in this mode is shown in Figure 5.
BYPASS
ACTIVE LUT
LUT ADDR
LUT ADDR AUTO INCR.
DATA
MEMORY EFFECT
COMPENSATION
I
Q
HALF
BAND
FILTER
Re{*}
I
COEF. B SELECT
FROM
PD
e j(pi/2)(n)
SERIAL INPUT EN.
PWR INTGR PER.
PWR LOW
PWR HIGH
POWER
INTEGRATOR
COEF. A COEF. B
SERIAL TO PAR.
FIGURE 5. IF CONVERTER IN REAL 1X MODE OPERATION
Real 2X
The real 2x operating mode converts complex to real at 2x
SER. OUTPUT EN.
PAR. TO SERIAL
SERCLK
SERSYNC
SEROUT
EXTERNAL
MEMORY
EFFECTS
FPGA
the sample rate and shifts the signal up to Fs/2 (Fs/4 of the
output rate). This mode has the same bandwidth as the
original signal with the I channel carrying the first of twwo
samples/clock and the Q channel carrying the second
FIGURE 4. PRE-DISTORTER BLOCK DIAGRAM
Serial Interface
sample. The operation of the IF Converter in this mode is
shown in Figure 6.
BYPASS
The serial interface for the external memory effects
calculation consists of outputs SERCLK, SERSYNC, and
SEROUT and input SERIN. The serial output sends the 32-
bit unsigned average power off-chip for further processing.
I
Q
FROM
PD
2
2
HALF
BAND
FILTER
e j(pi/2)(n)
Re{*}
Z -1
2
2
I
Q
The data is transmitted via the SEROUT pin MSB first, with
the first bit marked by a high pulse on the SERSYNC pin.
The SERCLK rate is scaled such that 32 bits are transmitted
in one period of the power integrator as controlled by register
0x18 bits 5:4. SEROUT is enabled by register 0x18 bit 12.
The SERIN receives the thermal compensation parameters
from external processing using the same SERCLK and
SERSYNC used by the SEROUT. The chip expects to
receive 32 bits of data sequentially on the SERIN pin: the
MSB of A, followed by the rest of A, then the MSB of B,
followed by the rest of B. The SERIN is enabled by register
0x18 bit 8. When SERIN is disabled, registers 0x19 and
0x1a supply the A and B parameters for the thermal
compensation calculations. See Figure 16 for a detailed
timing diagram of the serial interface.
8
FIGURE 6. IF CONVERTER IN REAL 2X MODE OPERATION
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ISL5416EVAL1 EVALUATION PLATFORM FOR ISL5416
ISL55005IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
ISL55007IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
ISL55008IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
ISL55009IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
ISL55010IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
ISL55011IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
ISL55012IEZ-T7 IC AMP MMIC BIPO BROADBND SC70-6
相关代理商/技术参数
ISL5314 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Direct Digital Synthesizer
ISL5314_05 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Direct Digital Synthesizer
ISL5314EVAL2 制造商:Intersil Corporation 功能描述:DEV TOOL FOR COMMLINK DIRECT DGTL SYNTHESIZER - Bulk
ISL5314IN 功能描述:IC SYNTHESIZER DIGITAL 48-MQFP RoHS:否 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR)
ISL5314INZ 功能描述:IC SYNTHESIZER DIGITAL 48-MQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR)
ISL54000 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Integrated Audio Amplifier Systems
ISL54000IRTZ 功能描述:IC AMP AUDIO PWR 1.23W AB 20TQFN RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:D 类 输出类型:1-通道（单声道），带立体声耳机 在某负载时最大输出功率 x 通道数量:930mW x 1 @ 8 欧姆; 40mW x 2 @ 16 欧姆 电源电压:2.7 V ~ 5.5 V 特点:消除爆音，差分输入，I²C，静音，关闭，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) 其它名称:MAX97000EWA+T-ND
ISL54000IRTZ-T 功能描述:IC AMP AUDIO PWR 1.23W AB 20TQFN RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:D 类 输出类型:1-通道（单声道），带立体声耳机 在某负载时最大输出功率 x 通道数量:930mW x 1 @ 8 欧姆; 40mW x 2 @ 16 欧姆 电源电压:2.7 V ~ 5.5 V 特点:消除爆音，差分输入，I²C，静音，关闭，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) 其它名称:MAX97000EWA+T-ND