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PDF CGY2021G Data sheet ( Hoja de datos )
| Número de pieza | CGY2021G | |
| Descripción | DCS/PCS 2 W power amplifier | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
CGY2021G
DCS/PCS 2 W power amplifier
Preliminary specification
Supersedes data of 1996 Oct 15
File under Integrated Circuits, IC17
1997 Apr 03
1 page  
Philips Semiconductors
DCS/PCS 2 W power amplifier
Preliminary specification
CGY2021G
FUNCTIONAL DESCRIPTION
Operating conditions
The CGY2021G is designed to meet the European
Telecommunications Standards Institute (ETSI) DCS
documents, the ETS 300 577 specification, which are
defined as follows:
• ton = 542.8 µs
• T = 4.3 ms
• Duty cycle = 1/8.
This amplifier is specifically designed for pulse operation
allowing the use of a LQFP48 plastic package.
Power amplifier
The Power Amplifier (PA) consists of four cascaded gain
stages with an open-drain configuration. Each drain has to
be loaded externally by an adequate reactive circuit which
also has to be a DC path to the supply.
The amplifier bias is set by using a negative voltage
applied at pins VGG1 and VGG2. This negative voltage must
be present before the supply voltage is applied to the
drains to avoid current overstress of the amplifier.
Power sensor driver
The power sensor driver is a buffer amplifier that delivers
an output signal at the DETO pin which is proportional to
the amplifier power. This signal can be detected by
external diodes for power control purpose. As the sensor
signal is taken from the input of the last stage of the PA,
it is isolated from disturbances at the output by the reverse
isolation of the PA output stage. An impedance mismatch
at the PA output therefore does not significantly influence
the signal delivered by the power sensor as this normally
occurs when power sense is made using a directional
coupler. Consequently, the cost and space of using a
directional coupler are saved.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134); general operating conditions applied.
SYMBOL
PARAMETER
VDD
VGG
Tj(max)
Tstg
Ptot
positive supply voltage
negative supply voltage
maximum operating junction temperature
IC storage temperature
total power dissipation
MIN.
−
−
−
−
−
MAX.
7
−10
150
150
1.3
UNIT
V
V
°C
°C
W
THERMAL CHARACTERISTICS
General operating conditions applied.
SYMBOL
PARAMETER
Rth j-c
thermal resistance from junction to case; note 1
VALUE
45
Note
1. This thermal resistance is a typical value and is measured under DCS/PCS pulse conditions.
UNIT
K/W
1997 Apr 03
5
5 Page 
Philips Semiconductors
DCS/PCS 2 W power amplifier
Preliminary specification
CGY2021G
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
Short-form specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
The data in this specification is extracted from a full data sheet with the same type
number and title. For detailed information see the relevant data sheet or data handbook.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Apr 03
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet CGY2021G.PDF ] | |
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