19-1282; Rev 0; 10/97
Lo w -No is e , 2 .5 GHz
Do w n c o n ve rt e r Mix e r
MAX2690
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ 7.6dBm Input Third-Order Intercept Point
♦ 10dB Downconverter Mixer Noise Figure
♦ 7.9dB Gain
The MAX2690 is a minia ture , low-nois e , low-p owe r
downconverter mixer designed for use in portable con-
s ume r e q uip me nt. Sig na ls a t the RF inp ut p ort a re
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.
♦ 400MHz to 2500MHz Wideband Operation
♦ Low Cost
♦ +2.7V to +5.5V Single-Supply Operation
♦ <1µA Shutdown Mode
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.
♦ Ultra-Small 10-Pin µMAX Package
The MAX2690 draws 16mA at V
= 3V and operates
CC
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.
______________Ord e rin g In fo rm a t io n
________________________Ap p lic a t io n s
2.45GHz Industrial-Scientific-Medical (ISM)
Band Radios
PART
TEMP. RANGE
PIN-PACKAGE
MAX2690EUB
-40°C to +85°C
10 µMAX
Wireless Local Area Networks (WLANs)
Personal Communications Systems (PCS)
Code-Division Multiple Access (CDMA)
Communications Systems
Typical Operating Circuit appears at end of data sheet.
Cellular and Cordless Phones
Hand-Held Radios
__________________P in Co n fig u ra t io n
________________Fu n c t io n a l Dia g ra m
TOP VIEW
TOP VIEW
MAX2690
BIAS
LGND
GND
1
2
3
4
5
10 SHDN
LGND
GND
1
2
3
4
5
10 SHDN
9
8
7
6
IFOUT+
IFOUT-
GNDLO
LO
9
8
7
6
IFOUT+
IFOUT-
GNDLO
LO
MAX2690
RFIN
RFIN
RFBYP
RFBYP
V
CC
V
CC
µMAX
µMAX
________________________________________________________________ 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.