RMBA19500A Fairchild Semiconductor, RMBA19500A Datasheet

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RMBA19500A

Manufacturer Part Number
RMBA19500A
Description
IC PWR AMP MMIC PCS 2W PMBG12
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of RMBA19500A

Current - Supply
180mA
Frequency
1.93GHz ~ 1.99GHz
Gain
30dB
Noise Figure
6dB
Package / Case
12-PMBG
Rf Type
CDMA, PCS
Voltage - Supply
7V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
P1db
-
Test Frequency
-
©2004 Fairchild Semiconductor Corporation
RMBA19500A
PCS1900 2 Watt GaAs MMIC Power Amplifier
General Description
The RMBA19500A is a highly linear Power Amplifier. The
two stage circuit uses our pHEMT process. It has been
designed for use as a driver stage for PCS1900 base
stations, or as the output stage for Micro- and Pico-Cell
base stations. The amplifier has been optimized for high
linearity requirements for PCS operation.
Absolute Ratings
Electrical Characteristics
Notes:
1. Only under quienscent conditions—no RF applied.
2. V
3. 9 Channel Forward Link QPSK Source; 1.23 Mbps modulation rate. CDMA ACPR1 is measured using the ratio of the average power within the 1.23 MHz channel
4. OIP3 specifications are achieved for power output levels of 27 and 30 dBm per tone with tone spacing of 1.25 MHz at band-center with adjusted supply and bias
5. VG1,2 and VG3 must be individually adjusted to achieve IDQ1,2 and IDQ3. A single VGG bias supply adjusted to achieve IDQTOTAL = 625mA can be used with
The device requires external input and output matching to 50 Ω as shown in Figure 3 and the Parts List.
Vd
Vg
P
T
T
Frequency Range
Gain (Small Signal) Over 1930–1990 MHz
Gain Variation
Noise Figure
P1dB Output
Output Power @ CDMA
PAE @ 33 dBm Pout
OIP3
Drain Voltage (Vdd)
Gate Voltage (VG1, 2 and VG3)
Quiescent currents (Idq1, 2 and Idq3)
Thermal Resistance (Channel to Case) R
Over Frequency Range
Over Temperature Range
IN
C
STG
at band center to the average power within a 30 KHz bandwidth at an 885 KHz offset. Minimum CDMA output power is met with ACPR1 > 36 dBc.
conditions of Vdd = 6.5V and IdqTotal = 625mA (see Note 5).
nearly equivalent performance. Values for IDQ1,2 and IDQ3 shown have been optimized for CDMA operation. IDQ1, 2 and IDQ3 (or IDQTOTAL) can be adjusted
to optimize the linearity of the amplifier for other modulation systems.
DD
Symbol
= 7.0V, T
4
C
= 25°C. Part mounted on evaluation board with input and output matching to 50 Ω .
Drain Supply Voltage
Gate Supply Voltage (max absolute)
RF Input Power (from 50 Ω source)
Operating Case Temperature Range
Storage Temperature Range
3
Parameter
5
5
1
2
JC
Parameter
Features
• 2 Watt linear output power at 36 dBc ACPR1 for CDMA
• OIP3 ≥ 43 dBm at 27 and 30 dBm output
• Small Signal Gain of > 30 dB
• Small outline SMD package
operation
1930
Min
30
33
43
-2
180, 445
±1.0
±1.5
Typ
7.0
30
24
45
11
6
-40 to +100
-30 to +85
Ratings
+10
+5
-5
1990
-0.25
Max
Units
May 2004
dBm
°C
°C
V
V
RMBA19500A Rev. C
Units
°C/W
MHz
dBm
dBm
dBm
mA
dB
dB
dB
dB
%
V
V

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RMBA19500A Summary of contents

Page 1

... RMBA19500A PCS1900 2 Watt GaAs MMIC Power Amplifier General Description The RMBA19500A is a highly linear Power Amplifier. The two stage circuit uses our pHEMT process. It has been designed for use as a driver stage for PCS1900 base stations the output stage for Micro- and Pico-Cell base stations ...

Page 2

... Pico-Cell base stations. Figure 1 shows the package outline and the pin designations. Figure 2 shows the functional block diagram of the packaged product. The RMBA19500A requires external passive components for DC bias and RF input and output matching circuits as shown in Figure 3 and the Parts List. A recommended schematic circuit is shown in Figure 3 ...

Page 3

... R8 R6 390Ω 1.1KΩ C5 1500pF L2 R5 5.6nH 20Ω R9 300Ω C4 1500pF RF OUT & Vd3 Pin # C15 5.6nH 1500pF 4.7µF C2 RFOUT 10.0pF C9 C10 L3 2.2pF 2.2pF 10nH P4 VD1 C11 4.7µF 4.7µF P2 VGG3 C7 0.1µF C14 4.7µF RMBA19500A Rev ...

Page 4

... Figure 4. Layout of Test Evaluation Board (RMBA19500A-TB, G655971) Test Procedure for the Evaluation Board (RMBA19500A-TB) CAUTION: LOSS OF GATE VOLTAGES (Vg1, Vg2, Vg3) WHILE CORRESPONDING DRAIN VOLTAGES (Vdd) ARE PRESENT CAN DAMAGE THE AMPLIFIER. The following sequence must be followed to properly test the amplifier. (It is necessary to add a fan to provide air cooling across the heat sink of RMBA19500A ...

Page 5

... Parts List for Test Evaluation Board (RMBA19500A-TB, G654188/G654942) Part Value L1, L2, L4 5.6nH L3 10nH C1 10pF C9 2.2pF C3, C4, C5 1500pF C10 2.0pF C2 15.0pF C8, C11, C14, C15 4.7µF C6, C7 0.1µF 20 Ω R1, R5 1000 Ω R2, R7 910 Ω Ω R4 1.1K Ω R6 390 Ω R8 300 Ω ...

Page 6

... Gain 31.8 (dB) 31.6 31.4 31 ©2004 Fairchild Semiconductor Corporation RMBA19500A, OIP3 vs. Power Output per Tone 7.0V, 1.960 GHz, 25° OUTPUT POWER PER TONE (dBm) Gain vs. Power Output per Tone 7.0V, 1.960 GHz, 25° OUTPUT POWER PER TONE (dBm) ...

Page 7

... TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ACEx™ FAST ActiveArray™ FASTr™ Bottomless™ FPS™ CoolFET™ FRFET™ CROSSVOLT™ GlobalOptoisolator™ ...

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