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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX2643 Datasheet

900MHz SiGe / High IP3 / Low-Noise Amplifiers

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MAX2643 pdf
19-1682; Rev 0; 4/00
EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL
900MHz SiGe, High IP3,
Low-Noise Amplifiers
General Description
The MAX2642/MAX2643 low-cost, high third-order inter-
cept point (IP3), low-noise amplifiers (LNAs) are
designed for applications in cellular, ISM, SMR, and
PMR systems. They feature a programmable bias,
allowing the IP3 and supply current to be optimized for
specific applications. These LNAs provide up to 0dBm
input IP3 while maintaining a low noise figure of 1.3dB.
The gain for these devices is typically 17dB. The
MAX2642 also features a 13dB attenuation step, which
extends the LNA’s dynamic range. Both devices feature
a shutdown mode that minimizes power consumption.
On-chip output matching saves board space by reduc-
ing the number of external components.
The MAX2642/MAX2643 are designed on a low-noise,
advanced silicon-germanium (SiGe) process technolo-
gy. They operate from a +2.7V to +5.5V single supply
and are available in the ultra-small 6-pin SC70 package.
________________________Applications
800MHz/900MHz Cellular Phones
900MHz Cordless Phones
868MHz/900MHz ISM-Band Wireless Data
PMR/SMR/LMR
Features
o Wide Frequency Range: 800MHz to 1000MHz
o High Output IP3 and Adjustable
+17dBm at 5.3mA
+7dBm at 2.8mA
o Low Noise Figure: 1.3dB at 900MHz
o 13dB Attenuation Step (MAX2642)
o On-Chip Output Matching
o Low-Power Shutdown Mode
o +2.7V to +5.5V Single-Supply Operation
o Ultra-Small SC70-6 Package
Ordering Information
PART
TEMP. RANGE
MAX2642EXT-T -40°C to +85°C
MAX2643EXT-T -40°C to +85°C
PIN-
PACKAGE
6 SC70-6
6 SC70-6
TOP
MARK
AAC
AAD
RF
INPUT
Typical Operating Circuit
VCC
47pF
VCC
RBIAS
510BIAS
BIAS
MAX2642
MAX2643
LOW GAIN
(ENABLE)
HIGH GAIN
(SHUTDOWN)
L1
8.7nH
C1
3.3pF
RFIN
RFOUT
33k
(10k)
RF
OUTPUT
GND
( ) ARE FOR MAX2643.
Pin Configuration
TOP VIEW
BIAS 1
6 RFOUT
MAX2642
GND 2 MAX2643 5 GND
RFIN 3
4 VCC
SC70-6
________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX2643 Datasheet

900MHz SiGe / High IP3 / Low-Noise Amplifiers

No Preview Available !

MAX2643 pdf
900MHz SiGe, High IP3,
Low-Noise Amplifiers
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V
RFOUT to GND...........................................-0.3V to (VCC + 0.3V)
RFIN to GND ..................................................................0 to 0.9V
RFIN Power (50source) ................................................+5dBm
BIAS to GND ................................................................0 to +0.3V
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Continuous Power Dissipation (TA = +70°C)
SC70-6 (derate 3.1mW/°C above +70°C) ...................245mW
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS—MAX2642
(VCC = +2.7V to +5.5V, TA = -40°C to +85°C, no RF signal applied, RFIN and RFOUT are AC-coupled and terminated to 50, high-
gain mode. Typical values are at VCC = 3.0V, TA = +25°C, unless otherwise noted.) (Notes 1, 2, 3)
PARAMETER
Supply Voltage
Operating Supply Current
Shutdown Supply Current
CONDITIONS
High-gain mode, RBIAS = 510, TA = +25°C
RBIAS = 510, TA = -40°C to +85°C
RBIAS = 806
RBIAS = 1.1k
Low-gain mode, RBIAS = 510, TA = 25°C
BIAS = unconnected (see Applications Information)
MIN TYP MAX UNITS
2.7 5.5 V
5.3 6.7
7.5
3.6 mA
2.8
5.9
0.2 mA
Gain Control Voltage Input
High-gain mode (Note 4)
Low-gain mode (Note 5)
0.6
V
2.0
Gain Control Input Current
High-gain mode (Note 6)
Low-gain mode (Note 7)
-10 0
µA
0 50
DC ELECTRICAL CHARACTERISTICS—MAX2643
(VCC = +2.7V to +5.5V, TA = -40°C to +85°C, no RF signal applied, RFIN and RFOUT are AC-coupled and terminated to 50. Typical
values are at VCC = 3.0V, TA = +25°C, unless otherwise noted.) (Notes 1, 8, 9)
PARAMETER
Supply Voltage
Operating Supply Current
Shutdown Supply Current
Shutdown Control Input Voltage
Shutdown Control Input Current
CONDITIONS
RBIAS = 510, TA = +25°C
RBIAS = 510, TA = -40°C to +85°C
RBIAS = 806
RBIAS = 1.1k
Shutdown mode (see Applications Information)
Normal operation (Note 10)
Shutdown mode (Note 11)
Normal operation (Note 7)
Shutdown mode (Note 6)
MIN TYP MAX UNITS
2.7 5.5 V
5.1 6.5
7.3
mA
3.4
2.6
0.2 10 µA
2.0
V
0.6
0 10 µA
-5 5
2 _______________________________________________________________________________________


Part Number MAX2643
Description 900MHz SiGe / High IP3 / Low-Noise Amplifiers
Manufacturer Maxim
Total Page 16 Pages
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