收藏本站
WCDMA Quasi-Direct Modulator
with VGA and PA Driver
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10, 11
12, 13
14, 24, 25
15
16
17
18
19
NAME
N.C.
POUT
V CC _PA
BIAS_SET
VGC
V CC _IF
V CC _BB
IDLE
SHDN
I+, I-
Q+, Q-
N.C.
LD
REF
V CC _PLL
V CC _CP
RFCP
FUNCTION
Connect to RF GND on PCB
Transmitter Output. This is an open-collector output and requires a pullup inductor to the supply
voltage. This pullup inductor can be part of the output matching network and can be connected
directly to the battery.
Supply for the PA Driver. This pin must be bypassed with a capacitor to system ground as close to
the pin as possible. Do not share the ground vias for the bypass capacitor with any other branch (see
the Typical Operating Circuit ).
Bias-Setting Pin. The DC voltage at this pin is a bandgap voltage. For nominal bias, connect a 12k ?
resistor to ground. The value of this resistor can be adjusted to alter current consumption, linearity,
and noise performance of the RF output.
Gain-Control Pin. Analog input pin controls both the IF VGA and RF VGA gain. When not driven, the
voltage on this pin is typically +1.5V. An RC filter on this pin must be used to filter out DAC noise or
the PDM clock.
Supply for IF Section. Bypass to system ground with a capacitor as close to the pin as possible. Do
not share the ground vias for the bypass capacitor with any other branch (see the Typical Operating
Circuit ).
Supply for Baseband Section. Bypass to system ground with a capacitor as close to the pin as
possible. Do not share the ground vias for the bypass capacitor with any other branch (see the
Typical Operating Circuit ).
Idle CMOS Digital Input. Drive LOW to place the device in WCDMA compressed mode (VCO and PLL
are ON; all others are OFF). A small RC lowpass filter can be used to minimize the effect of external
digital noise.
Shutdown CMOS Digital Input. Drive LOW to place the device in shutdown (everything OFF except
serial interface and registers, which retain their values). A small RC lowpass filter can be used to
minimize the effect of external digital noise. A logic-low on the SHDN pin overrides the serial bus
SHDN bit status.
Differential I-Channel Baseband Inputs to the Baseband Filter
Differential Q-Channel Baseband Inputs to the Baseband Filter
Leave Open
Lock CMOS Output. This pin is an open-drain output. Output HIGH indicates the RF PLL is locked.
Reference Frequency Input. This pin is internally biased to approximately +1.0V and must be AC-
coupled to the reference source. This is a high-impedance port and can be externally terminated to
the desired impedance.
Supply for PLL. Bypass with a capacitor to GND (see the Typical Operating Circuit ).
Supply for Synthesizer Charge Pump. Bypass with a capacitor to GND (see the Typical Operating
Circuit ).
RF Charge-Pump Output. Connect the RF PLL’s loop filter between RFCP and system ground. Keep
the line from this pin to the tank tune input as short as possible to prevent spurious pickup. Connect
the loop filter as close to the tune input as possible.
6
_______________________________________________________________________________________
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
MAX2410EVKIT EVAL KIT MAX2410
MAX2411AEEI+ IC UP/DOWNCONVERTER 28-QSOP
MAX2510EVKIT-SO EVAL KIT MAX2510
MAX2511EVKIT EVAL KIT MAX2511
MAX2538ETI+T IC LNA/MIXER CELL/PCS/GPS 28TQFN
MAX2608EVKIT EVAL KIT
MAX2611EUS+T IC AMP LOW NOISE SOT143-4
MAX2616EVKIT# EVAL KIT MAX2616
相关代理商/技术参数
MAX2395ETI-B2C 功能描述:调节器/解调器 RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
MAX2395ETI-T 功能描述:调节器/解调器 WCDMA Quasi-Direct Modulator w/VGA RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
MAX2395EVKIT 功能描述:射频开发工具 MAX2395 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
MAX2396EGI 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX2396EGI-T 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX2396EVKIT 功能描述:射频开发工具 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
MAX239C/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:
MAX239CNG 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: