Rainbow Electronics MAX2690 - Manual

MAX2690
Low-Noise, 2.5GHz
Downconverter Mixer
________________________________________________________________ Maxim Integrated Products 1
19-1282; Rev 0; 10/97
EVALUATION KIT
AVAILABLE
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.
_______________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
2.45GHz Industrial-Scientific-Medical (ISM)
Band Radios
Wireless Local Area Networks (WLANs)
Personal Communications Systems (PCS)
Code-Division Multiple Access (CDMA)
Communications Systems
Cellular and Cordless Phones
Hand-Held Radios
____________________________Features
♦ 7.6dBm Input Third-Order Intercept Point
♦ 10dB Downconverter Mixer Noise Figure
♦ 7.9dB Gain
♦ 400MHz to 2500MHz Wideband Operation
♦ Low Cost
♦ +2.7V to +5.5V Single-Supply Operation
♦ <1µA Shutdown Mode
♦ Ultra-Small 10-Pin µMAX Package
PART
MAX2690EUB -40°C to +85°C
TEMP. RANGE PIN-PACKAGE
10 µMAX
______________Ordering Information
__________________Pin Configuration
1
2
3
4
5
10
9
8
7
6
SHDN
IFOUT+
IFOUT-
GNDLO RFBYP
RFIN
GND
LGND
MAX2690
µ
MAX
TOP VIEW
LO V
CC
________________Functional Diagram
1
2
3
4
5
10
9
8
7
6
SHDN
IFOUT+
IFOUT-
GNDLO RFBYP
RFIN
GND
LGND
MAX2690
µ
MAX
TOP VIEW
LO V CC
BIAS
Typical Operating Circuit appears at end of data sheet.