19-1506; Rev 1; 10/99 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers The MAX2651/MAX2652/MAX2653 are fabricated using an advanced high-frequency SiGe bipolar process. As a result, all devices provide low noise figure, high gain, and high input third-order intercept point (IP3) performance at the GSM, DCS, and PCS bands. A pull-up resistor to V CC at each LNA output allows for gain adjustability. A minimal number of external components are needed for input and output matching, helping to reduce board space. The MAX2651/MAX2652 are packaged in a 10-pin µMAX, while the MAX2653 is packaged in an 8-pin µMAX. All devices operate from a single +2.7V to +3.3V supply. Applications GSM900/DCS1800 Dual-Band Phones Features ♦ Wide Operating Frequency Range 800MHz to 1000MHz (MAX2651/52) 1800MHz to 2000MHz (MAX2651/52/53) ♦ Excellent Low-Noise Performance 1.2dB/1.3dB over GSM Receive Band (MAX2651/52) 1.8dB/1.8dB/1.7dB over DCS Receive Band (MAX2651/52/53) ♦ High Gain 18dB over GSM Receive Band (MAX2651/52) 18dB/17.5dB/18.5dB over DCS Receive Band (MAX2651/52/53) ♦ 20dB Gain Reduction in Low-Gain Mode ♦ Externally Adjustable Gain ♦ +2.7V to +3.3V Single-Supply Operation ♦ Low Supply Current 5.4mA to 7.0mA in High-Gain Mode 2.2mA in Low-Gain Mode ♦ 0.25µA Shutdown Current (MAX2652/53) Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX2651EUB -40°C to +85°C 10 µMAX MAX2652EUB -40°C to +85°C 10 µMAX MAX2653EUA -40°C to +85°C 8 µMAX GSM900/DCS1800/PCS1900 Triple-Band Phones DCS1800 or PCS1900 Single-Mode Phones IS-136 TDMA Dual-Band Phones Pin Configurations/Functional Diagrams SHDN (GND) 1 GSMIN 2 LOW DC BIAS CONTROL GND 3 DCSIN 4 10 GAIN HIGH LOW 9 GSMOUT 8 VCC 7 DCSOUT SHDN 1 GND 2 DCSIN 3 GND 4 BAND 5 HIGH MAX2651 MAX2652 6 GND DC BIAS CONTROL LOW HIGH 8 GAIN 7 VCC 6 DCSOUT 5 GND MAX2653 ( ) ARE FOR MAX2651. ________________________________________________________________ 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 1-800-835-8769. MAX2651/MAX2652/MAX2653 General Description The MAX2651/MAX2652/MAX2653 silicon germanium (SiGe), low-noise amplifiers (LNAs) are intended for use in GSM900, DCS1800, and PCS1900 band wireless handsets. The MAX2651/MAX2652 consist of two LNAs, one optimized for the GSM900 band and the other optimized for the DCS1800/PCS1900 bands. They feature a band-select pin to switch between the two LNAs, as well as a gain-step input to reduce the gain of each LNA by 20dB and reduce supply current. The MAX2652 is functionally equivalent to the MAX2651, but features a lowpower shutdown mode. The MAX2653 consists of a single LNA optimized for the DCS1800 and PCS1900 bands, and has a shutdown feature and a 20dB gain step. The MAX2652 and MAX2653 together form an ideal solution for triple-band phone applications (GSM, DCS, and PCS bands). MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers ABSOLUTE MAXIMUM RATINGS VCC to GND ..............................................................-0.3V to +6V SHDN, GAIN, BAND to GND......................-0.3V to (VCC + 0.3V) GSMIN, DCSIN ..........................................1.0V peak (+10dBm) Input Current (all digital inputs) .......................................±10mA Continuous Power Dissipation 8-Pin µMAX (derate 4.5mW/°C above +70°C)..............362mW 10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C 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—MAX2651 (VCC = +2.7V to +3.3V, BAND = GAIN = VCC, no input signal, all input/output ports terminated in 50Ω, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3V, TA = +25°C.) (Note 1) PARAMETER Input Voltage Range Input Supply Current SYMBOL CONDITIONS ICC MIN TYP 2.7 VCC MAX UNITS 3.3 V DCS band, high-gain mode (BAND = GAIN = VCC) 5.7 8.7 DCS band, low-gain mode (BAND = VCC, GAIN = GND) 2.2 3.3 GSM band, high-gain mode (BAND = GND, GAIN = VCC) 5.9 9.6 GSM band, low-gain mode (BAND = GND, GAIN = VCC) 2.2 3.6 Input Logic Threshold High VIH Input Logic Threshold Low VIL Input Logic High Current IIH VIN = VCC Input Logic Low Current IIL VIN = GND mA 1.5 0.5 V V 1.5 -1.5 µA µA DC ELECTRICAL CHARACTERISTICS—MAX2652 (VCC = +2.7V to +3.3V, BAND = GAIN = VCC, no input signal, all input/output ports terminated in 50Ω, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3V, TA = +25°C.) (Note 1) PARAMETER Input Voltage Range Input Supply Current SYMBOL CONDITIONS Shutdown Supply Current MAX UNITS 3.3 V DCS band, high-gain mode (BAND = GAIN = VCC) 7.0 11.0 DCS band, low-gain mode (BAND = VCC, GAIN = GND) 2.3 3.6 GSM band, high-gain mode (BAND = GND, GAIN = VCC) 7.2 11.0 GSM band, low-gain mode (BAND = GND, GAIN = VCC) 2.4 3.7 SHDN = GND 0.25 Input Logic Threshold High VIH Input Logic Threshold Low VIL Input Logic High Current IIH VIN = VCC Input Logic Low Current IIL VIN = GND 2 TYP 2.7 VCC ICC MIN mA µA 1.5 V 1.5 µA 0.5 -1.5 _______________________________________________________________________________________ V µA GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers (VCC = +2.7V to +3.3V, SHDN = GAIN = VCC, no input signal, all input/output ports terminated in 50Ω, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3V, TA = +25°C.) (Note 1) PARAMETER SYMBOL Input Voltage Range CONDITIONS TYP MAX UNITS 3.3 V DCS band, high-gain mode (GAIN = VCC) 5.4 8.5 DCS band, low-gain mode (GAIN = GND) 2.2 3.2 SHDN = GND 0.25 2.7 VCC Input Supply Current ICC Shutdown Supply Current ISHDN MIN Input Logic Threshold High VIH Input Logic Threshold Low VIL Input Logic High Current IIH VIN = VCC Input Logic Low Current IIL VIN = GND mA µA 1.5 V 3 µA 0.5 V -1.5 µA Note 1: Devices are production tested at TA = +25°C. Minimum and maximum limits are guaranteed by design and characterization. AC ELECTRICAL CHARACTERISTICS—MAX2651 (MAX2651 EV kit, fIN = 945MHz (GSM band), fIN = 1850MHz (DCS band), PIN = -30dBm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER Input Frequency Range (Note 3) Power Gain (Note 4) Noise Figure (Note 4) SYMBOL fIN CONDITIONS DCS band (BAND = VCC) GSM band (BAND = GND) MIN 1805 925 TYP DCS band, high-gain mode (BAND = GAIN = VCC) TA = +25°C 16.5 18 DCS band, low-gain mode (BAND = VCC, GAIN = GND) TA = +25°C GSM band, high-gain mode (BAND = GND, GAIN = VCC) TA = +25°C GSM band, low-gain mode (BAND = GAIN = GND) TA = +25°C TA = -40°C to +85°C TA = -40°C to +85°C 16 -3.5 MAX 1880 960 MHz 19.5 20 -2 -4 -0.5 0 G NF UNITS dB TA = -40°C to +85°C TA = -40°C to +85°C 16.5 18 16 -3.5 19.5 20 -2 -4 -0.5 0 DCS band, high-gain mode (BAND = GAIN = VCC) 1.8 2.05 DCS band, low-gain mode (BAND = VCC, GAIN = GND) 5.5 6.0 GSM band, high-gain mode (BAND = GND, GAIN = VCC) 1.2 1.4 GSM band, low-gain mode (BAND = GAIN = GND) 5.3 6.7 dB _______________________________________________________________________________________ 3 MAX2651/MAX2652/MAX2653 DC ELECTRICAL CHARACTERISTICS—MAX2653 MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers AC ELECTRICAL CHARACTERISTICS—MAX2651 (continued) (MAX2651 EV kit, fIN = 945MHz (GSM band), fIN = 1850MHz (DCS band), PIN = -30dBm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL MIN TYP DCS band, high-gain mode (BAND = GAIN = VCC) CONDITIONS -11.5 -10 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -1.5 0.5 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -10.5 -8.5 GSM band, low-gain mode (BAND = GND, GAIN = GND) -2.5 0.5 DCS band, high-gain mode (BAND = GAIN = VCC) -20 -18 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -9.5 -8 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -20 -18 GSM band, low-gain mode (BAND = GND, GAIN = GND) -10.5 -8.5 (Note 5) Input Third-Order Intercept Point IIP3 (Note 6) Input 1dB Compression Point Input Return Loss Output Return Loss Reverse Isolation 4 IP-1dB S11 S22 S12 2 2 2 MAX UNITS dBm dBm DCS band, high-gain mode (BAND = GAIN = VCC) -11 -8.5 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -14 -12 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -11 -8.5 GSM band, low-gain mode (BAND = GAIN = GND) -20 -15 DCS band, high-gain mode (BAND = GAIN = VCC) -14 -10 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -12 -10 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -19 -15 GSM band, low-gain mode (BAND = GAIN = GND) -20 -15 DCS band, high-gain mode (BAND = GAIN = VCC) -32 -29 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -20 -18 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -39 -35 GSM band, low-gain mode (BAND = GAIN = GND) -22 -20 dB dB dB _______________________________________________________________________________________ GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers (MAX2652 EV kit, fIN = 945MHz (GSM band), fIN = 1850MHz (DCS band), PIN = -30dBm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL Input Frequency Range (Note 3) fIN Power Gain (Note 4) Noise Figure (Note 4) CONDITIONS DCS band (BAND = VCC) GSM band (BAND = GND) 16 17.5 TA = +25°C TA = -40°C to +85°C 15.5 DCS band, low-gain mode (BAND = VCC, GAIN = GND) TA = +25°C -3.5 GSM band, high-gain mode (BAND = GND, GAIN = VCC) TA = +25°C GSM band, low-gain mode (BAND = GAIN = GND) TA = +25°C -4.0 TA = -40°C to +85°C -4.5 TA = -40°C to +85°C MAX 1880 960 NF MHz 19.5 -2 -4 -0.5 0 dB TA = -40°C to +85°C 16.5 18 16 19.5 20 -2 -0.5 0 DCS band, high-gain mode (BAND = GAIN = VCC) 1.8 2.0 DCS band, low-gain mode (BAND = VCC, GAIN = GND) 5.8 6.3 1.3 1.5 5.5 6.7 dB GSM band, high-gain mode (BAND = GND, GAIN = VCC) GSM band, low-gain mode (BAND = GAIN = GND) DCS band, high-gain mode (BAND = GAIN = VCC) -8.5 -7 DCS band, low-gain mode (BAND = VCC, GAIN = GND) 0 1.5 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -9 -7.5 GSM band, low-gain mode (BAND = GND, GAIN = GND) 0.5 2.5 -18 -16.5 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -10.5 -8 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -18 -16.5 GSM band, low-gain mode (BAND = GND, GAIN = GND) -10 -8.5 (Note 6) DCS band, high-gain mode (BAND = GAIN = VCC) IP-1dB UNITS 19 G IIP3 Input 1dB Compression Point TYP DCS band, high-gain mode (BAND = GAIN = VCC) (Note 5) Input Third-Order Intercept Point MIN 1805 925 dBm dBm _______________________________________________________________________________________ 5 MAX2651/MAX2652/MAX2653 AC ELECTRICAL CHARACTERISTICS—MAX2652 MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers AC ELECTRICAL CHARACTERISTICS—MAX2652 (continued) (MAX2652 EV kit, fIN = 945MHz (GSM band), fIN = 1850MHz (DCS band), PIN = -30dBm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER Input Return Loss Output Return Loss Reverse Isolation 6 SYMBOL S11 S22 S12 2 2 2 CONDITIONS MIN TYP MAX DCS band, high-gain mode (BAND = GAIN = VCC) -12 -9.5 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -12 -9.5 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -11 -9.5 GSM band, low-gain mode (BAND = GAIN = GND) -20 -15 DCS band, high-gain mode (BAND = GAIN = VCC) -11 -9.5 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -17 -13 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -12.5 -11 GSM band, low-gain mode (BAND = GAIN = GND) -15 -13 DCS band, high-gain mode (BAND = GAIN = VCC) -29 -26 DCS band, low-gain mode (BAND = VCC, GAIN = GND) -19 -17 GSM band, high-gain mode (BAND = GND, GAIN = VCC) -37 -34 GSM band, low-gain mode (BAND = GAIN = GND) -23 -20 UNIT dB dB dB _______________________________________________________________________________________ GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers (MAX2653 EV kit, fIN = 1850MHz (DCS band), fIN = 1960MHz (PCS band), PIN = -30dBm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER Input Frequency Range (Note 3) Power Gain (Note 4) Noise Figure (Note 4) SYMBOL CONDITIONS BAND = VCC fIN MIN 1805 1880 PCS band 1930 1990 DCS and PCS band, high-gain mode (BAND = GAIN = VCC) TA = +25°C 17 TA = -40°C to +85°C 16 DCS and PCS band, low-gain mode (BAND = VCC, GAIN = GND) TA = +25°C -4 TA = -40°C to +85°C -4 High-gain mode (BAND = GAIN = VCC) DCS band 1.7 1.9 PCS band 1.8 2.05 5.3 6.7 Input Return Loss Output Return Loss Reverse Isolation 18.5 IP-1dB S22 S12 MHz 20 dB NF S11 UNITS 20 G IIP3 Input 1dB Compression Point MAX DCS band DCS and PCS band, low-gain mode (BAND = VCC, GAIN = GND) Input Third-Order Intercept Point (Notes 5, 7) TYP 2 2 2 -2.5 -1 0 DCS and PCS band, high-gain mode (BAND = VCC, GAIN = GND) -10.5 DCS and PCS band, low-gain mode (BAND = VCC, GAIN = GND) -1 +1.5 DCS and PCS band, high-gain mode (BAND = GAIN = VCC) -20 -18 DCS and PCS band, low-gain mode (BAND = VCC, GAIN = GND) -9 dB -8.5 dBm dB -7 DCS and PCS band, high-gain mode (BAND = GAIN = VCC) -11 -8.5 DCS and PCS band, low-gain mode (BAND = VCC, GAIN = GND) -11 -9.5 DCS and PCS band, high-gain mode (BAND = GAIN = VCC) -12 -9.5 DCS and PCS band, low-gain mode (BAND = VCC, GAIN = GND) -15 -12 dB dB High-gain mode (BAND = GAIN = VCC) DCS band -35 -31 PCS band -33 -29 Low-gain mode (BAND = VCC, GAIN = GND) DCS band -21 -18 PCS band -21 -18 dB Note 2: Minimum and maximum limits are guaranteed by design and characterization, but not production tested. Note 3: The part has been fully characterized at the specified frequency range. Operation outside of this range is possible but not guaranteed. Note 4: Specification excludes circuit board losses. Note 5: Measured with two tones, fIN1 = 1850MHz, fIN2 = 1850.8MHz, PIN = -33dBm for each tone. Note 6: Measured with two tones, fIN1 = 945MHz, fIN2 = 945.8MHz, PIN = -33dBm for each tone. Note 7: Measured with two tones, fIN1 = 1960MHz, fIN2 = 1960.8MHz, PIN = -33dBm for each tone. _______________________________________________________________________________________ 7 MAX2651/MAX2652/MAX2653 AC ELECTRICAL CHARACTERISTICS—MAX2653 Typical Operating Characteristics (MAX2651 EV kit, VCC = +3.0V, input and output matched with recommended matching networks, TA = +25°C, unless otherwise noted.) MAX2651 (GSM Band) 20 18 HIGH GAIN -3 LOW GAIN 0 MA\X2651-03 -1 MA\X2651-02 MA\X2651-01 20 INPUT RETURN LOSS vs. FREQUENCY POWER GAIN vs. FREQUENCY POWER GAIN vs. INPUT POWER -5 -5 HIGH GAIN -7 14 GAIN (dB) 16 S112 (dB) 10 LOW GAIN (dB) POWER GAIN (dB) 0 LOW GAIN HIGH GAIN -10 -15 -10 LOW GAIN -20 -9 12 -20 fIN = 945MHz -11 10 -20 -15 -10 -5 -25 800 0 840 880 920 960 800 840 880 FREQUENCY (MHz) PIN (dBm) 920 FREQUENCY (MHz) OUTPUT RETURN LOSS vs. FREQUENCY REVERSE ISOLATION vs. FREQUENCY 0 MA\X2651-04 0 -5 -10 -10 S122 (dB) S222 (dB) 1000 MA\X2651-05 -25 HIGH GAIN -15 -20 LOW GAIN -30 LOW GAIN -20 HIGH GAIN -40 -25 800 840 880 920 960 800 1000 840 SUPPLY CURRENT vs. VCC HIGH GAIN 960 1000 SUPPLY CURRENT vs. VCC LOW GAIN 7 MAX2651-07 NO INPUT SIGNAL TA = +85°C ICC (mA) 2.5 TA = +25°C 6 TA = -40°C 5 920 3.0 MAX2651-06 8 TA = +85°C 880 FREQUENCY (MHz) FREQUENCY (MHz) ICC (mA) MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers 2.0 TA = +25°C TA = -40°C 1.5 NO INPUT SIGNAL 4 1.0 2.7 2.8 2.9 3.0 VCC (V) 8 3.1 3.2 3.3 2.7 2.8 2.9 3.0 3.1 3.2 VCC (V) _______________________________________________________________________________________ 3.3 960 1000 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers MAX2651 (DCS Band) 0 20 LOW GAIN -2 HIGH GAIN -6 13 HIGH GAIN S112 (dB) -4 HIGH GAIN S212 (dB) 15 LOW GAIN (dB) 10 -10 0 LOW GAIN -10 LOW GAIN -20 -8 11 -20 f = 1840MHz -10 -5 1800 0 1840 1880 1920 1960 1800 2000 1840 1880 1920 1960 2000 FREQUENCY (MHz) FREQUENCY (MHz) PIN (dBm) OUTPUT RETURN LOSS vs. FREQUENCY REVERSE ISOLATION vs. FREQUENCY 0 0 MA\X2651-12 -15 MA\X2651-11 -10 S122 (dB) -10 HIGH GAIN LOW GAIN -20 -30 LOW GAIN -20 HIGH GAIN -40 1840 1880 1920 1960 1800 2000 1840 1880 1920 1960 2000 FREQUENCY (MHz) FREQUENCY (MHz) SUPPLY CURRENT vs. VCC LOW GAIN SUPPLY CURRENT vs. VCC HIGH GAIN 8 NO INPUT SIGNAL TA = +85°C 3.0 MAX2651-14 1800 TA = +85°C 2.5 7 ICC (mA) -20 MAX2651-13 -25 -10 S222 (dB) 9 ICC (mA) POWER GAIN (dB) 17 0 MA\X2651-09 MA\X2651-08 MA\X2651-10 POWER GAIN vs. INPUT POWER 19 INPUT RETURN LOSS vs. FREQUENCY POWER GAIN vs. FREQUENCY 6 TA = +25°C 5 TA = +25°C 2.0 1.5 TA = -40°C TA = -40°C NO INPUT SIGNAL 1.0 4 2.7 2.8 2.9 3.0 VCC (V) 3.1 3.2 3.3 2.7 2.8 2.9 3.0 3.1 3.2 3.3 VCC (V) _______________________________________________________________________________________ 9 MAX2651/MAX2652/MAX2653 Typical Operating Characteristics (continued) (MAX2651 EV kit, VCC = +3.0V, input and output matched with recommended matching networks, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (MAX2652 EV kit, VCC = +3.0V, input and output matched with recommended matching networks, TA = +25°C, unless otherwise noted.) MAX2652 (GSM Band) 20 -4 18 0 MA\X2652-tocA -2 LOW GAIN -10 HIGH GAIN -8 12 -10 0 LOW GAIN -15 -10 -5 -50 800 0 840 880 920 960 1000 800 840 880 920 960 1000 PIN (dBm) FREQUENCY (MHz) FREQUENCY (MHz) OUTPUT RETURN LOSS vs. FREQUENCY REVERSE ISOLATION vs. FREQUENCY HIGH-GAIN MODE SUPPLY CURRENT vs. SUPPLY VOLTAGE LOW GAIN LOW GAIN -30 -50 -50 7.5 7.0 TA = +25°C 6.5 HIGH GAIN -40 TA = +85°C 8.0 -20 -40 MAX2652-toc02 8.5 ICC (mA) -20 9.0 MA\X2652-tocD -10 S122 (dB) HIGH GAIN -30 0 MA\X2652-tocC 0 -10 -30 -40 -14 8 -20 LOW GAIN -20 f = 945MHz -25 -20 -10 -12 10 S222 (dB) S112 (dB) 14 HIGH GAIN 10 GAIN (dB) 16 -6 LOW GAIN (dB) HIGH GAIN (dB) HIGH GAIN MA\X2652-tocB MA\X2652-01 20 INPUT RETURN LOSS vs. FREQUENCY POWER GAIN vs. FREQUENCY POWER GAIN vs. INPUT POWER 6.0 5.5 920 960 1000 800 840 FREQUENCY (MHz) 880 920 960 LOW-GAIN MODE SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.5 TA = +25°C 2.0 TA = -40°C TA = +25°C -3 -5 TA = +85°C HIGH GAIN TA = +25°C 1.0 3.1 3.2 3.3 3.1 3.2 3.3 -6 LOW GAIN -8 TA = -40°C -10 TA = +25°C -12 -14 TA = +85°C HIGH GAIN TA = +85°C TA = +25°C -18 TA = -40°C TA = -40°C -11 3.0 3.0 -16 -9 NO INPUT SIGNAL 10 TA = -40°C -1 -7 1.5 2.9 2.9 INPUT P1dB vs. SUPPLY VOLTAGE TA = +85°C LOW GAIN INPUT IP3 (dBm) TA = +85°C SUPPLY VOLTAGE (V) 2.8 SUPPLY VOLTAGE (V) 3 1 2.8 2.7 INPUT IP3 vs. SUPPLY VOLTAGE 5 MAX2652 toc03 3.0 2.7 1000 FREQUENCY (MHz) 3.5 NO INPUT SIGNAL TA = -40°C 5.0 MAX2652 toc03b 880 INPUT P1dB (dBm) 840 MAX2652 toc03a 800 ICC (mA) MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers 2.7 2.8 2.9 3.0 3.1 SUPPLY VOLTAGE (V) 3.2 -20 3.3 2.7 2.8 2.9 3.0 3.1 SUPPLY VOLTAGE (V) ______________________________________________________________________________________ 3.2 3.3 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers MAX2652 (DCS Band) POWER GAIN vs. FREQUENCY MA\X2652-toc04 20 -2 HIGH GAIN HIGH GAIN 12 -8 S112 (dB) 14 -6 HIGH GAIN -10 10 GAIN (dB) -4 LOW GAIN (dB) 16 0 MA\X2652 toc05 LOW GAIN 18 0 LOW GAIN -20 f = 945MHz -12 -15 -10 -5 -50 1800 0 1840 1880 1920 1960 2000 1800 1920 1960 FREQUENCY (MHz) OUTPUT RETURN LOSS vs. FREQUENCY REVERSE ISOLATION vs. FREQUENCY HIGH-GAIN SUPPLY CURRENT vs. SUPPLY VOLTAGE 0 MA\X2652 toc07 HIGH GAIN -10 -10 NO INPUT SIGNAL 8.5 LOW GAIN -30 -40 TA = +85°C 8.0 -20 ICC (mA) S122 (dB) -20 -30 7.5 7.0 TA = +25°C 6.5 6.0 HIGH GAIN -40 5.5 -50 1920 1960 2000 1800 1840 FREQUENCY (MHz) LOW-GAIN SUPPLY CURRENT vs. SUPPLY VOLTAGE 1920 1960 TA = +25°C 2.0 TA = -40°C 1.5 NO INPUT SIGNAL TA = +85°C 0 TA = +25°C -2 TA = -40°C -4 2.9 3.0 3.1 3.2 3.3 LOW GAIN HIGH GAIN -8 TA = +25°C -16 TA = -40°C 3.0 3.2 3.3 3.1 3.2 3.3 LOW GAIN -8 -14 2.9 3.1 TA = +85°C -6 TA = +85°C 2.8 3.0 -4 -6 2.7 2.9 INPUT P1dB vs. SUPPLY VOLTAGE 2 -10 1.0 2.8 2.8 SUPPLY VOLTAGE (V) INPUT IP3 vs. SUPPLY VOLTAGE INPUT IP3 (dBm) TA = +85°C 2.7 2.7 2000 4 MAX2652 toc10 3.0 2.5 1880 FREQUENCY (MHz) INPUT 1dB (dBm) 1880 MAX2652 toc10a 1840 TA = -40°C 5.0 -50 1800 2000 9.0 LOW GAIN S222 (dB) 1880 FREQUENCY (MHz) 0 ICC (mA) 1840 PIN (dBm) MAX2652-toc09 -20 MAX2652 toc10b 8 -25 -30 -40 -10 10 LOW GAIN -20 -10 MA\X2652 toc08 HIGH GAIN (dB) INPUT RETURN LOSS vs. FREQUENCY 0 MA\X2652 toc06 POWER GAIN vs. INPUT POWER 20 TA = -40°C TA = +25°C TA = +85°C HIGH GAIN TA = +25°C TA = -40°C -18 3.2 3.3 ______________________________________________________________________________________ 11 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) 2.7 2.8 2.9 3.0 3.1 SUPPLY VOLTAGE (V) MAX2651/MAX2652/MAX2653 Typical Operating Characteristics (continued) (MAX2652 EV kit, VCC = +3.0V, input and output matched with recommended matching networks, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (MAX2653 EV kit, VCC = +3.0V, input and output matched with recommended matching networks, TA = +25°C, unless otherwise noted.) MAX2653 (DCS Band) POWER GAIN vs. INPUT POWER INPUT RETURN LOSS vs. FREQUENCY POWER GAIN vs. FREQUENCY MA\X2651-15 20 -5 10 HIGH GAIN 0 -8 LOW GAIN LOW GAIN -9 12 -4 S112 (dB) -7 GAIN (dB) HIGH GAIN LOW GAIN (dB) LOW GAIN 16 14 0 MA\X2653-17 -3 MA\X2653-16 18 POWER GAIN (dB) -10 -12 HIGH GAIN 10 -11 f = 1840MHz -20 -16 -20 -15 -10 -5 0 1800 1840 PIN (dBm) 1880 1920 1960 1840 1880 1920 FREQUENCY (MHz) FREQUENCY (MHz) OUTPUT RETURN LOSS vs. FREQUENCY REVERSE ISOLATION vs. FREQUENCY 0 MA\X2653-18 0 HIGH GAIN -10 S122 (dB) -10 S222 (dB) 1800 2000 MA\X2653-19 -25 LOW GAIN -20 LOW GAIN -20 -30 -30 HIGH GAIN -40 -40 1840 1880 1920 1960 1800 2000 1840 1880 1920 1960 2000 FREQUENCY (MHz) FREQUENCY (MHz) SUPPLY CURRENT vs. VCC HIGH GAIN NO INPUT SIGNAL TA = +85°C SUPPLY CURRENT vs. VCC LOW GAIN 3.0 MAX2651-20 8 MAX2651-21 1800 TA = +85°C 7 2.5 ICC (mA) ICC (mA) MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers 6 TA = +25°C 5 TA = -40°C 2.0 TA = +25°C 1.5 TA = -40°C NO INPUT SIGNAL 4 1.0 2.7 2.8 2.9 3.0 VCC (V) 12 3.1 3.2 3.3 2.7 2.8 2.9 3.0 3.1 VCC (V) ______________________________________________________________________________________ 3.2 3.3 1960 2000 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers PIN MAX2652 NAME FUNCTION 1 SHDN Shutdown Logic Input. Drive low to enter shutdown; drive high or connect to VCC for normal operation. 3, 6 2, 4, 5 GND RF Ground. Connect to the ground plane as close to the IC as possible to minimize trace inductance. 2 2 — GSMIN RF Input for GSM Band 4 4 3 DCSIN RF Input for DCS and PCS bands 5 5 — BAND Band-Select Logic Input. Drive BAND high to enable DCS/PCS LNA; drive low to enable GSM LNA. 7 7 6 DCSOUT 8 8 7 VCC 9 9 — GSMOUT 10 10 8 GAIN MAX2651 MAX2652 MAX2653 — 1 1, 3, 6 RF Output for DCS and PCS Bands Supply Voltage Input, +2.7V < VCC < +3.3V RF Output for GSM Band Gain-Select Logic Input. Drive GAIN high for high-gain operation; drive GAIN low for low-gain operation. LOGIC-LEVEL GAIN CONTROL VCC 910Ω 1 GND GAIN 10 180Ω 8.2nH GSM INPUT (925MHz TO 960MHz) 2 3 47pF 3.9nH DCS INPUT (1805MHz TO 1880MHz) GSMIN GND 8.2nH 220pF MAX2651 68pF 15pF 100pF GSMOUT VCC C9 2.2pF 9 GSM OUTPUT VCC 8 10µF 4 DCSIN DCSOUT BAND GND 1.2pF DCS OUTPUT 7 1.5pF 5 6 330Ω 2.2nH 220pF 220pF 910Ω VCC LOGIC-LEVEL BAND CONTROL Figure 1. MAX2651 Typical Application Circuit ______________________________________________________________________________________ 13 MAX2651/MAX2652/MAX2653 Pin Description MAX2651/MAX2652/MAX2653 GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers LOGIC-LEVEL GAIN CONTROL LOGIC-LEVEL SHUTDOWN CONTROL 910Ω 910Ω 1 GSM INPUT (925MHz TO 960MHz) SHDN 240Ω 220pF 2 3 47pF C9 2.2pF GSMIN 9 GSMOUT GND GSM OUTPUT VCC 8 VCC 10µF 3.3nH DCS INPUT (1805MHz TO 1880MHz) 8.2nH MAX2652 68pF 5.6pF 100pF 10 GAIN 220pF 6.8nH VCC 4 DCSIN DCSOUT BAND GND 1.2pF DCS OUTPUT 7 1.1pF 5 6 2.2nH 220pF 220pF 910Ω 1µF VCC LOGIC-LEVEL BAND CONTROL Figure 2. MAX2652 Typical Application Circuit LOGIC-LEVEL SHUTDOWN CONTROL LOGIC-LEVEL GAIN CONTROL 1k 1k MAX2653 1 100pF SHDN GAIN GND VCC 8 VCC 100pF 200pF 2 3.3nH DCS INPUT (1805MHz TO 1880MHz) 3 DCSIN DCSOUT 7 1.0pF (0.8pF*) 6 2200pF 1.5pF 4 GND GND 5 330Ω (510Ω*) 2.7nH (2.2nH*) 47pF VCC * FOR OPTIMUM PCS-BAND (1930MHz TO 1990MHz) PERFORMANCE, USE THESE COMPONENTS. Figure 3. MAX2653 Typical Application Circuit 14 ______________________________________________________________________________________ DCS OUTPUT GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers Gain Select The MAX2651/MAX2652/MAX2653 offer a step gain in the LNA to optimize the receiver’s dynamic range. A logic-level low at GAIN reduces the active LNA’s gain by about 20dB and reduces supply current by 3.5mA. Shutdown Functionality The MAX2652/MAX2653 offer a low-current shutdown feature. Drive SHDN low to power down the LNA and reduce supply current to less than 0.25µA. Applications Information External Components The MAX2651/MAX2652/MAX2653 require matching circuits at their inputs and outputs for operation in a 50Ω system. The application circuits in Figures 1, 2, and 3 describe the matching circuits for each device’s LNA; suggested component values, suppliers, and part numbers are listed in the MAX2651/MAX2652/ MAX2653 EV kits manual. These values are optimized for best simultaneous noise figure, gain, and return loss performance. Input and output impedance matching networks are very sensitive to layout-related parasitics. It is important to keep all matching components as close to the device as possible to minimize the effects of stray inductance and stray capacitance of PC board traces, particularly for the 1800MHz and 1900MHz bands. Layout and Power-Supply Bypassing A properly designed PC board is essential to any RF/microwave circuit. Be sure to use controlled impedance lines on all high-frequency inputs and outputs. Proper grounding of the GND pins is fundamental; if the PC board uses a topside RF ground, connect all GND pins directly to it. For boards where the ground plane is not on the component side, it’s best to connect all GND pins to the ground plane with plated throughholes close to the package. To minimize coupling between different sections of the system, the ideal power-supply layout is a star configuration with a large decoupling capacitor at a central VCC node. The VCC traces branch out from this central node, each leading to a separate VCC node on the PC board. A second bypass capacitor that has low ESR at the RF frequency of operation is placed at the end of each trace. This arrangement provides local decoupling at the VCC pin. At high frequencies, any signal leaking out of one supply pin sees a relatively high impedance (formed by the VCC trace inductance) to the central VCC node and an even higher impedance to any other supply pin, as well as a low impedance to ground through its bypass capacitor. Chip Information MAX2651 TRANSISTOR COUNT: 272 MAX2652 TRANSISTOR COUNT: 272 MAX2653 TRANSISTOR COUNT: 253 Using the Collector Load Resistor to Set Gain The MAX2651/MAX2652/MAX2653 provide open-collector output stages to allow an external resistor to set the gain. The collector pull-up resistors set the gain for each LNA to about 18dB. Lower gains are achieved by reducing this resistance, and higher gains are achieved by increasing it. The maximum achievable gain is defined by the maximum collector current swing. Note that the value of the collector gain-setting resistor principally defines the LNA’s output impedance, and that the matching networks are tuned to match this impedance to 50Ω. Redefining the LNA gain by changing the collector gain-setting resistor requires retuning the output matching networks. ______________________________________________________________________________________ 15 MAX2651/MAX2652/MAX2653 Detailed Description GSM900 and DCS1800/PCS1900 Dual-Band, Low-Noise Amplifiers 10LUMAX.EPS 8LUMAXD.EPS MAX2651/MAX2652/MAX2653 Package Information Note: The packages for these devices do not feature the exposed pad. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.