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Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
4
VPD2
3
MODE
2
VPD1
13
14
15
16
1
10
VCC
11
VCC1
12
VCC1
5
6
7
8
9
RF2157
PCS CDMA/TDMA 3V POWER AMPLIFIER
• 3V 1850-1910MHz CDMA PCS Handsets
• 3V 1750-1780MHz CDMA PCS Handsets
• 3V TDMA PCS Handsets
• Spread-Spectrum Systems
• Commercial and Consumer Systems
• Portable Battery-Powered Equipment
The RF2157 is a high-power, high-efficiency linear ampli-
fier IC targeting 3V handheld systems. The device is
manufactured on an advanced Gallium Arsenide Hetero-
junction Bipolar Transistor (HBT) process, and has been
designed for use as the final RF amplifier in dual-mode
3 V CDMA and TDMA handheld digital equipment,
spread-spectrum systems, and other applications in the
1710 MHz to 1910 MHz band. The device is packaged in a
compact 4mmx4 mm LCC, as well as a 4 mmx4mm MLF
(micro leaded package). The frequency response can be
optimized for linear performance over 1710MHz to
1910 MHz. The device features a digital mode switch
which can be used to minimize operating current under
low output power conditions.
• Single 3V Supply
• 29dBm Linear Output Power
• 24dB Linear Gain
• 35% Linear Efficiency
• On-board Power Down Mode
• 1750MHz to 1910MHz Operation
RF2157
PCS CDMA Power Amplifier
RF2157 PCBA
Fully Assembled Evaluation Board
2
Rev A19 010611
3.75
3.75
+
1.50 SQ
4.00
4.00
1
0.45
0.28
3.20
1.60
0.75
0.50
12°
INDEX AREA 3
1.00
0.90
0.75
0.65
0.05
0.00
NOTES:
5
Package Warpage: 0.05 max.
4
Pins 1 and 9 are fused.
Shaded Pin is Lead 1.
1
Dimension applies to plated terminal and is measured between
0.10 mm and 0.25 mm from terminal tip.
2
The terminal #1 identifier and terminal numbering convention
shall conform to JESD 95-1 SPP-012. Details of terminal #1
identifier are optional, but must be located within the zone
indicated. The identifier may be either a mold or marked
feature.
3
0.80
TYP
2
1
Dimensions in mm.
Package Style: LCC, 16-Pin, 4x4
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