CX77207 - PA Module for Dual-band GSM850 PCS1900 / GPRS Applications 

The CX77304-15 Power Amplifier Module(PAM) is designed in a compact form factor 

for dual-band cellular handsets comprising GSM850 and PCS1900 operation. It also 

supports Class 10 General Packet Radio Service (GPRS) multislot operation. 

The module consists of separate Heterojunction Bipolar Transistor (HBT) PA blocks 

for the GSM850 and PCS1900 bands, interface circuitry, and RF input and output 

ports internally matched for 50 ? impedance to reduce the number of external 

components. The PA blocks are fabricated on a single Gallium Arsenide (GaAs) die 

and share common power supply pins for current distribution. Extremely low 

leakage current (2 µA, typical) of the dual PA module maximizes handset standby 

time.

The CX77304-15 also contains band-select switching circuitry to select GSM 

(logic 0) and PCS (logic 1) as determined from the Band Select (BS) signal. In the 

block diagram shown below, the BS pin selects the PA output (PCS OUT or 

GSM OUT) while the Analog Power Control (APC) controls the level of output power.

A custom CMOS IC provides the internal interface circuitry including a current 

amplifier that minimizes the required power control current (IAPC) to 10 µA, 

typical. The GaAs die, the Silicon (Si) die, and passive components are mounted 

on a multi-layer laminate substrate and the assembly encapsulated with plastic 

overmold. 

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Shipping:

1. MJD needs about 3 BUSINESS DAY to handle the order after received payment. after receiving your payment. Otherwise, we will state it in the invoice in advance.

2. MJD can Ship via your shipping account (DHL / FEDEX / UPS / TNT or others) as your instruction. Or Ship via our shipping account (We have a very good relationship with DHL and FEDEX with very special freight).

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your wishes, just feel free to inform us when ordering.

4. Any import fees or charges are the buyer's responsibility.

REFUNDS & RETURN:

We offer a warranty on all items that we sold. Item will be tested before ship,it will be in good condition,if there are some problems with the item,feel free to contact us.Please Email us to notify a defective item. Unless otherwise specified, this item comes with 30 days warranty from the shipment date.

You must contact us before returning any product. All returns must be made within 30 days from this shipment date.Return must be in new condition(the SAME CONDITION as it was sent to you)

Because of wholesale price is different from sample price, our website can not state. Please send your required part number via email Sales@hkmjd.com or skype id mjdccm898 to us.  As well as welcome you call us : 0755-83957301  We will send offer for you;  Sometimes manufacturer's price is unstable, so we don't adjust price in time. if you feel price is a little high for you, just feel free to contact us for consultation. Thank you for your support ！