MAX2690 19-1282 Rev 0 10/97 Low-Noise, 2.5GHz Downconverter Mixer General Description Features The MAX2690 is a miniature, low-noise, low-power 7.6dBm Input Third-Order Intercept Point downconverter mixer designed for use in portable con- 10dB Downconverter Mixer Noise Figure sumer equipment. Signals at the RF input port are mixed with signals at the local-oscillator (LO) port using 7.9dB Gain a double-balanced mixer. The RF port frequency range 400MHz to 2500MHz Wideband Operation is 400MHz to 2500MHz. The LO port frequency range is 700MHz to 2500MHz. The IF frequency range is 10MHz Low Cost to 500MHz, provided the LO and RF frequencies are +2.7V to +5.5V Single-Supply Operation chosen appropriately. The IF port is differential, which provides good linearity <1A Shutdown Mode and low LO emissions, as well as providing compatibili- Ultra-Small 10-Pin MAX Package 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 = 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 1A, making it ideal for battery-operated equipment. This device is offered in a miniature 10-pin MAX package. Applications Ordering Information 2.45GHz Industrial-Scientific-Medical (ISM) PART TEMP. RANGE PIN-PACKAGE Band Radios MAX2690EUB -40C to +85C 10 MAX Wireless Local Area Networks (WLANs) Personal Communications Systems (PCS) Code-Division Multiple Access (CDMA) Typical Operating Circuit appears at end of data sheet. Communications Systems Cellular and Cordless Phones Hand-Held Radios Pin Configuration Functional Diagram TOP VIEW TOP VIEW MAX2690 BIAS LGND 1 10 SHDN LGND 1 10 SHDN GND 2 9 IFOUT+ GND 2 9 IFOUT+ MAX2690 RFIN 3 8 IFOUT- RFIN 3 8 IFOUT- RFBYP 4 7 GNDLO RFBYP 4 7 GNDLO V 5 6 LO V 5 6 LO CC CC MAX MAX Maxim Integrated Products 1 For free samples & the latest literature: Low-Noise, 2.5GHz Downconverter Mixer ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +6.0V Operating Temperature Range CC RFIN Input Power..............................................................10dBm MAX2690EUB ...................................................-40C to +85C LO Input Power.................................................................10dBm Junction Temperature......................................................+150C SHDN Input Voltage ...................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +165C CC Continuous Power Dissipation Lead Temperature (soldering, 10sec) .............................+300C 10-Pin MAX (derate 4.1mW/C above +70C) ............330mW 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 (V = +2.7V to +5.5V, no RF signals applied, LO = open, IFOUT+ = IFOUT- = V , SHDN = high, LGND = GND = GNDLO = 0V, CC CC T = T to T . Typical values are at V = +3.0V and T = +25C, unless otherwise noted. Minimum and maximum values are A MIN MAX CC A guaranteed by design and characterization over temperature.) PARAMETER CONDITIONS MIN TYP MAX UNITS Operating Supply Current 9.5 16 20.1 mA Shutdown Input Voltage High 2 V Shutdown Input Voltage Low 0.5 V SHDN = 0V 0.4 Shutdown Supply Current A SHDN = low 2 Shutdown Input Bias Current 0V < SHDN < V -5 4 25 A CC AC ELECTRICAL CHARACTERISTICS (MAX2690 EV kit V = +3.0V P = -3dBm P = -25dBm SHDN = high RFIN matched for 900MHz, 1.95GHz, and 2.45GHz as CC LO RF noted below. Inductor connected from LGND to GND = 39nH for 900MHz operation, 27nH for 1.95GHz operation, and 6.8nH for 2.45GHz operation. T = +25C, unless otherwise noted.) A PARAMETER CONDITIONS MIN TYP MAX UNITS f = 900MHz, f = 1.1GHz 7.9 RF LO Conversion Gain f = 1.95GHz, f = 1.75GHz 6.4 dB RF LO (Note 1) f = 2.45GHz, f = 2.1GHz 4 RF LO Gain Variation over f = 1.95GHz, T = T to T (Note 2) 0.6 1.2 dB RF A MIN MAX Temperature f = 900MHz, f = 1.1GHz 7.6 RF LO Two tones at Input Third-Order Intercept -25dBm per tone, f = 1.95GHz, f = 1.75GHz 5.3 dBm RF LO f = 1MHz above f RF2 RF f = 2.45GHz, f = 2.1GHz 4.3 RF LO f = 900MHz, f = 1.1GHz 10 RF LO Noise-Figure f = 1.95GHz, f = 1.75GHz 11.5 dB RF LO Single Sideband f = 2.45GHz, f = 2.1GHz 12 RF LO 2 MAX2690