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19-1282; Rev 0; 10/97
ATION
EVALU
AVAILA
KIT
BLE
_______________General Description
The MAX2690 is a miniature, low-noise, low-power
downconverter mixer designed for use in portable con-
sumer equipment. Signals at the RF input port are
mixed with signals at the local-oscillator (LO) port using
a double-balanced mixer. The RF port frequency range
is 400MHz to 2500MHz. The LO port frequency range is
700MHz to 2500MHz. The IF frequency range is 10MHz
to 500MHz, provided the LO and RF frequencies are
chosen appropriately.
The IF port is differential, which provides good linearity
and low LO emissions, as well as providing compatibili-
ty with applications using differential IF filters, such as
CDMA cellular phones. The mixer noise figure is 10dB
at 900MHz.
The MAX2690 draws 16mA at V CC = 3V and operates
from a +2.7V to +5.5V supply. A logic-controlled shut-
down mode reduces the supply current to less than 1μA,
making it ideal for battery-operated equipment. This
device is offered in a miniature 10-pin μMAX package.
________________________Applications
Low-Noise, 2.5GHz
Downconverter Mixer
____________________________Features
o 7.6dBm Input Third-Order Intercept Point
o 10dB Downconverter Mixer Noise Figure
o 7.9dB Gain
o 400MHz to 2500MHz Wideband Operation
o Low Cost
o +2.7V to +5.5V Single-Supply Operation
o <1μA Shutdown Mode
o Ultra-Small 10-Pin μMAX Package
______________Ordering Information
2.45GHz Industrial-Scientific-Medical (ISM)
Band Radios
PART
MAX2690EUB
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
10 μMAX
Wireless Local Area Networks (WLANs)
Personal Communications Systems (PCS)
Code-Division Multiple Access (CDMA)
Communications Systems
Cellular and Cordless Phones
Hand-Held Radios
__________________Pin Configuration
TOP VIEW
Typical Operating Circuit appears at end of data sheet.
________________Functional Diagram
TOP VIEW
MAX2690
LGND 1
10 SHDN
LGND 1
BIAS
10 SHDN
GND
2
9
IFOUT+
GND
2
9
IFOUT+
RFIN
RFBYP
V CC
3
4
5
MAX2690
8
7
6
IFOUT-
GNDLO
LO
RFIN
RFBYP
V CC
3
4
5
8
7
6
IFOUT-
GNDLO
LO
μ MAX
μ MAX
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
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