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MAX2642 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 900MHz SiGe, High IP3, Low-Noise Amplifiers | |||
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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 LNAâs 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
510⦠BIAS
BIAS
MAX2642
MAX2643
LOW GAIN
(ENABLE)
HIGH GAIN
(SHUTDOWN)
L1
8.7nH RFIN
C1
3.3pF
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.
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