|
|
PDF SKY77325 Data sheet ( Hoja de datos )
| Número de pieza | SKY77325 | |
| Descripción | PAM | |
| Fabricantes | Skyworks Solutions | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SKY77325 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
PRELIMINARY DATA SHEET
SKY77325: iPAC™ PAM for Quad-Band GSM / GPRS
Applications
• Quad-band cellular
handsets encompassing
- Class 4 GSM850/900
- Class 1 DCS1800
PCS1900
- Class 12 GPRS multi-slot
operation
Features
• Low input power range
- 0 to 6 dBm
• High efficiency
- GSM850 49%
- GSM900 53%
- DCS 53%
- PCS 53%
• BiCMOS PA controller and
interface IC
- Low power control slope
- Fast response time
- Improved control
accuracy
• Integrated closed loop
power amplifier control
• Internal ICC sense resistor
for PAC
• Input/Output matching 50
internal (with DC blocking)
• 22-pin package
• Small outline
- 6 mm x 8 mm
• Low profile
- 1.2 mm maximum
• Gold plated, lead-free
contacts
Description
The SKY77325 Power Amplifier Module (PAM) is designed in a low profile (1.2 mm), compact form
factor for quad-band cellular handsets comprising GSM850/900, DCS1800, and PCS1900 operation.
The PAM also supports Class 12 General Packet Radio Service (GPRS) multi-slot operation.
The module consists of separate GSM850/900 PA and DCS1800/PCS1900 PA blocks, impedance-
matching circuitry for 50 Ω input and output impedances, and a Power Amplifier Control (PAC) block
with an internal current-sense resistor. The custom BiCMOS integrated circuit provides the internal
PAC function and interface circuitry. Fabricated onto a single Gallium Arsenide (GaAs) die, one
Heterojunction Bipolar Transistor (HBT) PA block supports the GSM850/900 bands and the other
supports the DCS1800 and PCS1900 bands. Both PA blocks share common power supply pins to
distribute current. The GaAs die, the Silicon (Si) die, and the passive components are mounted on a
multi-layer laminate substrate. The assembly is encapsulated with plastic overmold.
RF input and output ports of the SKY77325 are internally matched to a 50 Ω load to reduce the
number of external components for a quad-band design. Extremely low leakage current (2.5 µA,
typical) of the dual PA module maximizes handset standby time. The SKY77325 also contains band-
select switching circuitry to select GSM (logic 0) or DCS/PCS (logic 1) as determined from the Band
Select (BS) signal. In Figure 1 below, the BS pin selects the PA output (DCS/PCS OUT or GSM850/900
OUT) and the Analog Power Control (VAPC) controls the level of output power.
VBATT and VSENSE pins connect to an internal current-sense resistor and interface to an integrated
power amplifier control (iPAC™) function, which is insensitive to variations in temperature, power
supply, process, and input power. The ENABLE input allows initial turn-on of PAM circuitry to minimize
battery drain.
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103196P5 • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • May 14, 2004
1
1 page  
iPAC™ PAM FOR QUAD-BAND GSM / GPRS
PRELIMINARY DATA SHEET • SKY77325
Parameter
Frequency range
Input power
Analog power control voltage
Power Added Efficiency
2nd to 13th harmonics
Output power
Input VSWR
Forward isolation
Table 3. SKY77325 Electrical Specifications (1) (3 of 8)
Symbol
Test Condition
Minimum
GSM900 Mode (f = 880 to 915 MHz and PIN = 0 to 6 dBm)
f — 880
PIN — 0
VAPC — 0.2
VCC = 3.5 V
POUT = 34.5 dBm
PAE
ENABLE > 2.0 V
pulse width 577 µs
duty cycle 1:8
TCASE = +25 °C
49
2fO to 13fO
BW = 3 MHz
6.5 dBm ≤ POUT ≤ 34.5 dBm
—
POUT
VCC = 3.5 V
TCASE = +25 °C
34.5
POUT MAX LOW VOLTAGE
VCC = 2.9 V
ENABLE > 2.0 V
TCASE = –20 °C to +100 °C
(See Table 2 for multislot.)
PIN = 0 dBm
32.0
POUT MAX HIGH VOLTAGE
VCC = 4.5 V
ENABLE > 2.0 V
TCASE = –20 °C to +100 °C
(See Table 2 for multislot.)
PIN = 0 dBm
32.0
ΓIN
POUT = 6.5 to 34.5 dBm,
controlled by VAPC
—
POUT STANDBY
PIN = 6 dBm
VAPC = 0.1 V
ENABLE ≤ 0.2 V
—
Typical
—
—
—
53
–30
35.0
33.0
36.3
1.5:1
–40
Maximum Units
915 MHz
6 dBm
2.1 V
—%
–10 dBm
—
—
dBm
—
2.0:1 —
–35 dBm
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103196P5 • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • May 14, 2004
5
5 Page 
iPAC™ PAM FOR QUAD-BAND GSM / GPRS
PRELIMINARY DATA SHEET • SKY77325
Figure 2. Typical SKY77325 PAM Application
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103196P5 • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • May 14, 2004
11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet SKY77325.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SKY77321 | PA Module | Skyworks Solutions |
| SKY77324 | iPAC PAM for Quad-Band GSM / GPRS | Skyworks Solutions |
| SKY77325 | PAM | Skyworks Solutions |
| SKY77328 | iPAC PAM | Skyworks Solutions |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |