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参数资料
| 型号： | MAX11008BETM+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 17/67页 |
| 文件大小： | 0K |
| 描述： | IC CTLR LDMOS BIAS DUAL 48TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 43 |
| 功能： | 偏压控制器 |
| RF 型： | 手机 |
| 次要属性： | 片上 4Kb EEPROM |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 包装： | 托盘 |
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Dual RF LDMOS Bias Controller with
Nonvolatile Memory
Detailed Description
The MAX11008 sets and controls the bias conditions
for dual RF LDMOS power devices found in cellular
base-station power amps. Each device includes two
high-side current-sense amplifiers with programmable
gains of 2, 10, and 25 to monitor the LDMOS transistor
drain current over the 20mA to 5A range. Two external
diode-connected transistors monitor the LDMOS tran-
sistor temperatures while an internal temperature sen-
sor measures the local die temperature of the
MAX11008. The 12-bit ADC is interfaced to a 7:1 multi-
plexer and converts the signals from the PGA outputs,
internal and external temperature readings, or the two
auxiliary analog inputs into digital data results that can
be stored in the FIFO.
On the control side, two gate-drive channels, driven
from two 12-bit DACs and a gain stage of 2, generate a
positive gate voltage bias for the LDMOS. Each gate-
drive output supports up to ±2mA of gate current. The
gate-drive amplifier is current-limited to ±25mA and
features a fast clamp to analog ground that operates
independently of the serial interface.
Digital Serial Interface
The MAX11008 features both an I 2 C and an SPI-com-
patible serial interface. Connect SPI/ I2C to DGND to
select the I 2 C serial-interface operation, or to DV DD to
select the SPI serial-interface operation. Do not alter
interface mode during operation.
SPI Serial Interface
Connect SPI/ I2C to DV DD to select the SPI interface.
The SPI serial interface consists of a serial data input
(DIN), a serial clock line (SCLK), a chip select ( CS ),
and a serial data output (DOUT). The use of serial data
output (DOUT) is optional and is only required when
data is to be read back by the master device. The
MAX11008 is SPI compatible within the range of V DD =
+2.7V to +5.25V. DIN, SCLK, CS , and DOUT facilitate
bidirectional communication between the MAX11008
and the master at rates up to 20MHz.
Figure 1 illustrates the 4-wire interface timing diagram.
The MAX11008 is a transmit/receive slave-only device,
relying upon a master to generate a clock signal. The
master initiates data transfer on the bus and generates
the SCLK signal to permit data transfer.
The MAX11008 includes an on-chip, nonvolatile
EEPROM that stores LUTs and register information. The
LUTs are designed to store gate voltage vs. temperature
curves for the LDMOS FET. The data is used for temper-
ature compensation of the LDMOS FET’s bias point.
The LUTs can also contain compensation data for anoth-
er independent parameter: either sense voltage or
AIN voltage.
t CSW
CS
t CSS
t CSS
t CL
t CH
t CP
t CSH
SCLK
t DH
t DS
DIN
D23
D22
D1
D0
t DV
DOUT
Figure 1. SPI Serial-Interface Timing
t DO
t TR
______________________________________________________________________________________
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11008BETM+ | 功能描述:射频放大器 Dual RF LDMOS Bias Controller w/NV Mem RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| MAX11008BETM+T | 功能描述:射频放大器 Dual RF LDMOS Bias Controller w/NV Mem RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| MAX11008EVC16 | 功能描述:放大器 IC 开发工具 MAX11008 Eval Kit RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MAX11008EVKIT+ | 功能描述:放大器 IC 开发工具 MAX11008 Eval Kit RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MAX1100CWG | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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