intended for use in PCS handsets and wireless local loop sub-
scriber units. The amplifier can be biased to meet the require-
ments of PCS-1900, IS-136 (TDMA), IS-98 (CDMA) or DCS-
1800 systems. It is a member of Celeritek’s new
Triniti DX
Pro™
family of 3V power amplifier MMICs.
The CMM1530-LC is packaged in a low-cost, space
efficient, LCC-8 package that provides excellent electrical sta-
bility and low thermal resistance. The part requires minimal
external circuitry for bias and matching to reduce space and
cost.
This device is unconditionally stable under all source
and load impedances.
Absolute Maximum Ratings
Parameter
Rating
Parameter
Rating
Parameter
Rating
Drain Voltage (+Vd)
Drain Current (Id)
RF Input Power
DC Gate Voltage (-Vg)
+5.5 V*
1.8 A
3 dBm*
-3.0 V*
Power Dissipation
Thermal Resistance
Storage Temperature
5W
20°C/W
-65°C to +150°C
Operating Temperature
Channel Temperature
Soldering Temperature
-40°C to +90°C
150°C
260°C for 5 Sec.
* Max (+Vd) and (-Vg) under linear operation. Max potential difference across the device at 1dB gain compression point (2Vd + |-Vg|) not to exceed the minimum breakdown voltage (Vbr) of +12V.
Recommended Operating Conditions
Parameter
Typ
Units
Parameter
Typ
Units
Drain Voltage (+Vd)
3.0 to 4.2
Volts
Operating Temperature (PC Board)
-30 to +80
°C
Application Information
The CMM1530-LC is a three stage amplifier that requires
a positive and a negative supply voltages for proper operation.
It is essential when turning on the device that the negative sup-
ply be applied before the positive supply. When turning the
device off, the positive supply should be removed before the
negative supply is removed.
The CMM1530-LC can be operated over a range of sup-
ply voltages and bias points. It is important that the maximum
power dissipation of the package be observed at all times and
that the maximum voltage across the device is not exceeded.
Circuit Design Considerations
Biasing
Negative gate voltages are necessary to set the bias
currents of the three FET stages in the CMM1530-LC. The
first stage gate bias voltage is applied to Vg1 (Pin 2). The sec-
ond stage gate bias voltage is applied to Vg2 (Pin 1), while the
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third stage FET gate bias is applied to Vg3 (Pin 8). It is desir-
able to use one or more DACs (digital to analog converters)
along with appropriate divider networks, in order to adjust the
quiescent currents to within 10 mA of the target values. As an
example, for CDMA applications the target quiescent current
of the third FET is 85 mA, while those for the second and the
first FETs are 45 and 15 mA, respectively. The total quiescent
is 135 mA. It is also recommended that the quiescent currents
be set in the following sequence: the third stage FET is set
first, followed by the second stage FET, followed by the first
stage FET. The negative supply voltages control the quiescent
currents through each of the FETs and, therefore, control the
output power, adjacent channel power ratios, and the currents
at the full output power.
The positive supply voltages are applied to Pins 4, 5, 6
and 7.
– Continued on Page 2 –
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Fax: (408) 986-5095
CMM1530-LC
Electrical Characteristics
Parameter
Condition
Advanced Product Information - November 2002
(2 of 4)
Unless otherwise specified, the following specifications are guaranteed at room temperature with drain voltage (+Vd) = 3.5 V in Celeritek test fixture.
Min
Typ
Max
Units
Frequency Range
Gain
Gain Ripple*
Gain Variation
Power Output Control Range
Power Output
Harmonics
Noise Power in Receive Band
Linearity
Spurious Signal
Noise Figure
Input Return Loss
Output Return Loss
Efficiency (Vdd = 3.0 V)
Positive Supply Current (Id)
Quiescent Current (Iq)
Negative Supply Current (-Ig)
Negative Supply Voltage (-Vg)
@ Digital power output
1805-1880 MHz & 1850-1910 MHz
Over supply voltage
Over temperature
Vdd = 0 V to +3.5 V
Meets IS-136 TDMA mask
Meets IS-98 CDMA mask
2nd @ Digital power output, no output trapping, Po=+28.5 dBm
3rd @ Digital power output, no output trapping, Po=+28.5 dBm
30 kHz bandwidth
CDMA modulation @ +28.5 dBm Pout, 1.25 MHz offset
TDMA modulation @ +30 dBm Pout - Adjacent
TDMA modulation @ +30 dBm Pout - Alternate
VSWR = 3:1 in-band, VSWR = 10:1 out-of-band
1.85
28
1.91
31
1.5
2
0.03
50
+30.0
+28.5
-30
-40
-94
-45
-26
-45
-80
3.0
10
8
38
35
750
595
130
200
1.1
-0.8
Pout = +30.0 dBm - TDMA
Pout = +28.5 dBm - CDMA
Pout IS-136 TDMA
Pout IS-98 CDMA
No RF CDMA mode
No RF TDMA mode
Includes external resistor divider
Into external resistor divider
36
32
-0.5
2.0
-1.4
GHz
dB
dB
dB/V
dB/°C
dB
dBm
dBm
dBc
dBc
dBm
dBc/30KHz
dBc
dBc
dBc
dB
dB
dB
%
%
mA
mA
mA
mA
mA
V
* Specifications guaranteed over the temperature range of -20°C to +80°C
– Continued from Page 1 –
It is very important to provide adequate de-coupling
between the RF and DC signals in designing the DC bias cir-
cuit. Inadequate by-pass capacitance and inductance around the
DC supply lines can compromise the adjacent channel power
ratio (ACPR), or reduce power gain and/or create oscillations.
The recommend DC by-pass capacitance and low-pass in-line
inductance are shown in the evaluation board on Page 4.
Matching Circuits
Output matching and input matching cir-
cuits are required to achieve the RF specifications in this data
sheet. The recommend matching circuits are identical to the
matching circuits for the evaluation board shown on Page 4.
For output power matching, one shunt capacitor along the
transmission line connected to Pins 6 and 7 as well as the bond
wire inside the package from the output leads to the output
FET are used to transform 50Ω impedance to the load line
resistance of the output FET. The placement and the value of
the capacitor are important in achieving the performance
desired. Matching circuits for the frequencies other than the
one shown can be achieved by changing the capacitor value
and the placement position of the capacitor. The device can be
designed to work from UHF to around 3 GHz.
Supply Ramping
To obtain power ramping, gate supply con-
trol is recommend. Drain supply voltage ramping can also be
used.
Modulation
When biased as specified, the CMM1530-LC
will achieve the required adjacent channel response for the
digital PCS system specified. Celeritek tests each product
under digital modulation to ensure correlation to customer
applications.
Thermal
1. The copper pad on the backside of the CMM1530-LC must
be soldered to the ground plane.
2. All 8 leads of the package must be soldered to the appropri-
ate electrical connection.
Typical Performance
Wideband Gain & Return Loss
vs Frequency @ 3.5 V, +25°C
Gain, dB
35
30
25
20
Input Return Loss
Gain
-20
-30
-40
0.5
1.0
1.5
2.0
Frequency, GHz
2.5
3.0
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Return Loss, dB
Output Return Loss
0
-10
CMM1530-LC
Advanced Product Information - November 2002
Typical Performance
(Continued)
Gain & IS-136 TDMA Output Power
vs Frequency Over Voltage @ +25°C
Power Out, dBm
32
3.3 V
30
3.0 V
2.7 V
(3 of 4)
Korean CDMA Spectral Mask
(Vdd=3.5V, 1,752 MHz, Po=+28.5 dBm)
1.85
Frequency, GHz
27
1.91
IS-136 TDMA Spectral Mask
(Vdd=3.5V, 1,880 MHz, Po=+30 dBm)
Gain, dB
3.3 V
3.0 V
2.7 V
29
IS-98 CDMA Spectral Mask
(Vdd=3.5V, 1,880 MHz, Po=+28.5 dBm)
Id & IS-136 TDMA ACPR vs
Power Output (3.5V, 1.91 GHz)
1000
800
Id & IS-98 CDMA ACPR vs
Power Output (3.5V, 1.91 GHz)
Id, mA
Id, mA
Id
Adjacent Chanel
Power Ratio, dBc
200
-20
-40
-60
21.75
24.5
27.25
30
Power Output, dBm (30 kHz BW)
Adjacent channel power (worst case, Fc ± 30 kHz)
Alternate channel power (worst case, Fc ± 60 kHz)
100
-45
-50
-55
7.125
14.5
21.625
28.5
Power Output, dBm (1.25 MHz BW)
Adjacent channel power (worst case ± 1.25 MHz)
19
0
Power Output, dBm
TDMA Power Output and Efficiency vs Input Power
(3.0V, 1.91 GHz)
Power Output, dBm
35
25
15
52.5
CDMA Power Output, 2nd and 3rd Harmonics
vs Input Power (3.5V, 1.91 GHz)
35
25
15
5
-30
-45
-60
-2.5
Efficiency, %
35.0
17.5
0
-1
3rd
-13
-10
-4
-7
Input Output, dBm
-26.5
-20.5
-8.5
-14.5
Input Output, dBm
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Harmonics, dBc
2nd
Adjacent Chanel
Power Ratio, dBc/30 kHz
600
400
CMM1530-LC
Recommended Matching Topology
65
Vgg
1.5 K
130
C1
10 µF
C5
100 pF
C3
100 pF
1
2
RF
IN
C8
5600 pF
3
50
Ω
L1
47 nH
C14
0.01 µF
Advanced Product Information - November 2002
(4 of 4)
Note: This schematic represents the topology of the matching circuit recommended by Celeritek.
1.5 K
C13
0.01 µF
C4
100 pF
40
Ω
30°
@ 1.88 GHz
C15
3.3 pF
C6
100 pF
C7
100 pF
RF OUT
C16 50
Ω
0.7 pF
Evaluation Board Schematic
Board substrate:
ER = 4.60
Thickness = 0.031 in.
8
7
6
uu
uu
uu
uu
4
5
CMM1530-LC
L2 47 nH
C10
5600 pF
uu
uu
15nH or 100
Ω
90° @ 1.88 GHz
R5
51 K
Ω
Vcc TX
C12
0.01 µF
C9
5600 pF
C11
0.01 µF
C2
10 µF
Physical Dimensions
Ordering Information
The CMM1530-LC is available in a surface mount LCC-8 package and devices are available in tube or tape and reel.
Part Number for Ordering
Package
CMM1530-LC-00S0
LCC-8 CDMA surface mount power package in tube
CMM1530-LC-00T0
LCC-8 TDMA surface mount power package in tube
CMM1530-LC-00ST
LCC-8 CDMA surface mount power package in tape and reel
CMM1530-LC-00TT
LCC-8 TDMA surface mount power package in tape and reel
PB-CMM1530-LC-00S0
Evaluation Board with SMA connectors for CMM1530-LC-00S0 tested CDMA
PB-CMM1530-LC-00T0
Evaluation Board with SMA connectors for CMM1530-LC-00T0 tested TDMA
Celeritek reserves the right to make changes without further notice to any products herein. Celeritek makes no warranty, representation or guarantee regarding the
suitability of its products for any particular purpose, nor does Celeritek assume any liability arising out of the application or use of any product or circuit, and specifically
disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating
parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Celeritek does not convey any license under its patent
rights nor the rights of others. Celeritek products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body,
or other applications intended to support or sustain life, or for any other application in which the failure of the Celeritek product could create a situation where personal
injury or death may occur. Should Buyer purchase or use Celeritek products for any such unintended or unauthorized application, Buyer shall indemnify and hold Celeritek
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Celeritek was negligent
regarding the design or manufacture of the part. Celeritek is a registered trademark of Celeritek, Inc. Celeritek, Inc. is an Equal Opportunity/Affirmative Action Employer.
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