CCS1930 Просмотр технического описания (PDF) - Celeritek, Inc.
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CCS1930 Datasheet PDF : 2 Pages
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Product Information
March 1996 (1 of 2)
Features
t High Gain ≈ 32 dB
t +30 dBm Output Power @ 5 Volts
t >45% Efficiency Achievable
t Small Size
Applications
t North America PCS Base Stations
t Japanese PHS Base Stations
t Industrial Data Communication Networks
CCS1930
1.85 to 2.0 GHz
1 Watt Amplifier Chip Set
Functional Block Diagram
CMM1301
CFK2062
Description
The Celeritek CCS1930 is a two-chip set designed to
provide a compact, 2 Watt, RF power amplifier for North
American PCS base stations, Japanese PHS base stations, and
industrial applications operating in the 1.85 to 2.0 GHz band.
The chip set consists of a integrated driver amplifier
(CMM1301) and a matched power stage (CFK2062) that oper-
ates from a 5 Volt positive supply.
When used with external heat sinking, the chip set
implements a very small, high performance, and cost-effective
transmit power amplifier that can be operated with high effi-
ciency or backed off for linear operation through adjustment of
the input drive level. Off chip matching is limited to just three
capacitors and one resistor which further contributes to the
compact nature of the product. The driver amplifier includes an
analog level adjustment capability that allows fine tuning of
the output power level over a 10 dB range.
The use of the CCS1930 allows the designer to
achieve close to the FCC-specified +30 dBm out of the anten-
na, after making allowances for filter and antenna coupling
losses. When used with a Celeritek CSW2102 SPDT switch,
transmit/receive switching can be implemented. The use of a
second Celeritek CSW2102 SPDT switch in the circuit allows
for the implementation of antenna diversity switching.
Evaluation Board
The Celeritek PB-CCS1930 evaluation board is avail-
able to assist the designer in the testing of this chip set and is
useful as an application example. The test data and typical per-
formance shown were taken on this evaluation board.
Electrical Characteristics
The following typical specifications are measured at +25°C with VD1 = VD2 = 5 V. The CMM1301 is biased for ID = 150 mA and the CFK2062
is biased for ID = 600 mA, with no RF applied. Refer to individual device Data Sheets for biasing details.
Parameter
Condition
1.85 GHz
1.95 GHz
2.0 GHz
Units
Power Output
1 dB Gain Compression Point
30.0
30.0
29.5
dBm
Gain
PIN = -15 dBm
32.0
32.0
32.0
dB
Ordering Information
The CCS1930 Amplifier is available as a two-chip set. Both devices can be purchased individually or as a set. Both devices are
available in tape and reel. The PB-CCS1930 Evaluation board may also be purchased separately. Ordering part numbers are listed.
Part Number for Ordering
CCS1930
PB-CCS1930
CMM1301-AM
CFK2062-P3
Function
Amplifier Chip Set
Amplifier Evaluation Board
Driver Amplifier
Power Stage
Package
CMM1301-AM, CFK2062-P3
Assembled FR4 PC board with SMA connectors
SOIC-16 surface mount narrow body plastic package
SOIC-8 surface mount power package
3236 Scott Boulevard
Santa Clara, California 95054
Phone: (408) 986-5060
Fax: (408) 986-5095
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