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参数资料
| 型号： | SKY77324 |
| 厂商： | SKYWORKS SOLUTIONS INC |
| 元件分类： | 放大器 |
| 英文描述： | iPAC PAM for Quad-Band GSM / GPRS |
| 中文描述： | 824 MHz - 849 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| 封装： | 6 X 6 MM, 1.2MM HEIGHT, LEAD FREE, LEADLESS PACKAGE-22 |
| 文件页数： | 8/23页 |
| 文件大小： | 1218K |
| 代理商： | SKY77324 |
DATA SHEET SKY77324
iPAC PA MODULE FOR QUAD-BAND GSM / GPRS
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
16
June 9, 2005 Skyworks Proprietary and Confidential information. Products and product information are subject to change without notice. 103123D
Electrostatic Discharge Sensitivity
The SKY77324 is a Class I device. Figure 7 lists the Electrostatic
Discharge (ESD) immunity level for each non-ground pin of the
SKY77324 module. The numbers specify the ESD threshold levels
for each pin where the I-V curve between the pin and ground
starts to show degradation.
ESD testing was performed in compliance with MIL-STD-883E
Method 3015.7 using the Human Body Model. If the magnitude of
ESD damage threshold is found to consistently exceed 2000 volts,
this so is indicated. If the ESD damage threshold below 2000 volts
is measured for either polarity, numbers are indicated that
represent worst case values observed in product characterization.
Figure 7. ESD Sensitivity Areas (Top View)
Various failure criteria can be utilized when performing ESD
testing. Many vendors employ relaxed ESD failure standards,
which fail devices only after “the pin fails the electrical
specification limits” or “the pin becomes completely non-
functional”. Skyworks’ most stringent criteria fail devices as soon
as the pin begins to show any degradation on a curve tracer. To
avoid ESD damage, both latent and visible, it is very important that
the product assembly and test areas follow the Class-1 ESD
handling precautions listed below.
Personnel Grounding
- Wrist Straps
- Conductive Smocks, Gloves and Finger Cots
- Antistatic ID Badges
Facility
- Relative Humidity Control and Air Ionizers
- Dissipative Floors (less than 109
to GND)
Protective Workstation
- Dissipative Table Tops
- Protective Test Equipment (Properly Grounded)
- Grounded Tip Soldering Irons
- Conductive Solder Suckers
- Static Sensors
Protective Packaging & Transportation
- Bags and Pouches (Faraday Shield)
- Protective Tote Boxes (Conductive Static Shielding)
- Protective Trays
- Grounded Carts
- Protective Work Order Holders
Technical Information
Closed loop control of the amplifier is enabled when PAC ENABLE
is driven to logic high. The PA collector current will then be
directly proportional to the VAPC input voltage over the range of 400
mV to 2.1 V.
To meet the GSM power versus time mask and switching transient
requirements the PAM must be provided with a DAC ramp profile
on the VAPC input as well as proper timing on digital controls for the
PAC circuitry.
Note:
Please refer to 3GPP TS 51.010-1: Mobile Station (MS)
conformance specification. All GSM specifications
are now the responsibility of 3GPP. The standards
are available at http://www.3GPP.org.
The SKY77324 has been designed to comply with interface
requirements and DAC resolution of leading base band devices.
The ramp profile typically consists of a pedestal voltage, 10–16
discrete voltage steps on the rising edge of the burst, a constant
region, 10–16 steps on the falling edge, and a final voltage.
Typically, the user defines the start, stop, and 10–16 percentage
values for each rising and falling edge, which are then applied as
discrete voltages at the VAPC input. For the SKY77324, generally
the same profile, scaled in amplitude, is used for all frequencies
and power control levels. The ultimate purpose is to keep the RF
output power ramp within the time mask and to maintain
acceptable spectral limits at specified offset frequencies. The VAPC
input has an internal reconstruction filter such that external
resistors or capacitors are unnecessary on the phone board or the
test fixture.
Figure 8 represents the dynamic characteristics of the RF output
burst power that results from the ramp profile delivered by the
DAC to the VAPC input. The transmit power must not exceed the
given limits at the time specified relative to the start and end of
the data burst. Additional requirements are placed on spectral
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相关代理商/技术参数 |
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|---|---|
| SKY77325 | 制造商:SKYWORKS 制造商全称:SKYWORKS 功能描述:iPAC⑩ PAM for Quad-Band GSM / GPRS |
| SKY77325-12 | 制造商:Skyworks Solutions Inc 功能描述:Part Number Only |
| SKY77328 | 制造商:SKYWORKS 制造商全称:SKYWORKS 功能描述:iPAC PAM for Quad-Band GSM/GPRS |
| SKY77331 | 制造商:SKYWORKS 制造商全称:SKYWORKS 功能描述:Power Amplifier Module with Integrated Coupler for Quad-Band GSM / EDGE |
| SKY77336 | 制造商:SKYWORKS 制造商全称:SKYWORKS 功能描述:Power Amplifier Module for Quad-Band GSM/GPRS/EDGE |
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