- 您现在的位置：买卖IC网 > Datasheet目录472 > MAX2235EVKIT (Maxim Integrated)EVAL KIT MAX2235 Datasheet资料下载
参数资料
| 型号： | MAX2235EVKIT |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT MAX2235 |
| 标准包装： | 1 |
| 系列： | * |
+3.6V, 1W Autoramping Power
Amplifier for 900MHz Applications
Third Stage (Power Stage)
This last stage delivers 30dBm to a 50 ? load. It oper-
ates in Class E to achieve a high power-added efficien-
Table 1. Operating Modes
SHDN GC
MODE
cy (PAE). Proper output matching is required for
optimal output power. The output of the power stage
requires a low-series-resistance pull-up inductor with a
minimum current rating of 1.5A. See the Typical
>2.0V
>2.0V
<0.5V
>0.6V
<0.4V
Don’t care
On
Standby
Shutdown
Operating Circuit for an example of an output matching
circuit.
Biasing and Power Control
SHDN , GC, RAMP, and REF are bias and power-control
pins. Drive SHDN below 0.5V to turn off the entire chip,
and drive SHDN above 2.0V to turn on the device.
When SHDN is high, a V GC from 0.6V to 2.3V continu-
ously controls the gain in the first stage (VGA) and the
output power.
Drive GC below 0.4V to put the device in standby mode
with only the first stage on. If GC is unconnected and
V SHDN > 2.0V, the device is set to maximum gain.
Table 1 summarizes these operating modes.
Power Ramping Control
A capacitor connected between RAMP and REF con-
trols the output power rise/fall time to reduce transient
noise when SHDN turns the device on and off. Because
the ramp is approximately a raised cosine, this device
can be used in direct On/Off Keying (OOK) applications
with minimum intersymbol interference. The value of the
ramping capacitor is determined from the Rise/Fall Time
vs. Ramping Capacitance curves in the Typical
Operating Characteristics .
Board Assembly Precaution
Solder the underside metal slug evenly to the board
ground plane for optimal performance. Fill all vias in the
area under the slug. For maximum power gain and sat-
urated output power, ensure that the entire slug makes
contact with the board ground.
Chip Information
TRANSISTOR COUNT: 668
_______________________________________________________________________________________
7
相关PDF资料 |
PDF描述 |
|---|---|
| MAX2240EBL+T | IC PWR AMP 2.4-2.5GHZ 9UCSP |
| MAX2240EVKIT | EVAL KIT MAX2240 |
| MAX2242EVKIT | EVAL KIT MAX2242 |
| MAX2247EBC+T | IC AMP POWER 2.4GHZ 12-UCSP |
| MAX2265EVKIT | EVAL KIT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2235EVKIT+ | 功能描述:射频开发工具 MAX2235 Eval Kit 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 |
| MAX223C | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:+5V-Powered, Multichannel RS-232 Drivers/Receivers |
| MAX223C/D | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX223CAI | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX223CAI+ | 功能描述:RS-232接口集成电路 5V MultiCh RS-232 Driver/Receiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
发布紧急采购，3分钟左右您将得到回复。