Maxim无线/射频功率放大器选择指南

tmily

Maxim无线/射频功率放大器选择指南 [复制链接]

本文概括了Maxim针对蜂窝、PCS、802.11b、无绳电话以及Bluetooth等应用提供的射频(RF)功率放大器(PA)。列出了工作电压、电源电流、输出功率、封装、功效等参数的对照表，并给出了Maxim PA IC的特点。另外，还提供了一个根据市场应用选择的参考表。

更多信息请查询：无线产品网页
更多信息请查询：快速浏览MAX2240数据资料
更多信息请查询：快速浏览MAX2264/MAX2265数据资料
更多信息请查询：快速浏览MAX2267/MAX2268/MAX2269数据资料
更多信息请查询：快速浏览MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/MAX2327数据资料
更多信息请查询：快速浏览MAX2430数据资料
更多信息请查询：快速浏览MAX2601/MAX2602数据资料
更多信息请查询：应用技术支持

Maxim的RF功率放大器即可应用于线性调制，如QAM和QPSK，也可用于非线性调制，如：FM、FSK等。针对TDMA市场设计的PA在性能上有所改进，如：自动斜率控制可减小频谱扩散，自动斜率控制有助于保持Vcc的稳定、降低VCO牵引。自动热保护功能能够根据需要临时减小输出功率，提供一个坚固、耐用的PA。针对CDMA市场推出的PA能够在城市或远郊CDMA环境下、对于大多数便携终端要求的输出功率电平提供更低的电源电流，CDMA PA在大多数时间工作在较低的输出功率状态。

对于2.4GHz ISM应用，如：802.11b WLAN、Bluetooth、HomeRF及无绳电话，Maxim可提供低成本、超小尺寸(如UCSP封装)的功率放大器，这些PA具有模拟或数字的功率控制、闭环功率控制、动态偏置控制、集成检测器等，并具有较高的效率。

以下列出了采用硅双极型工艺设计的RF功率放大器关键特性：

低成本，这一点得益于它较高的管芯产量和简单的器件制作工艺(与超外差器件相比)
小尺寸，采用UCSP封装和较少的外部元件
无需负偏置电源，不同于大多数GaAs放大器
在全温范围和负载变化范围内提供稳定的器件特性
自动斜率控制

下表列出了我们的一些功率放大器及其性能，注意，有几款PA需要在指定的性能参数和中心频点进行重新调谐，与表中参数有差异。

表1. 选择指南: 型号列表

Part	Vcc (V)	Icc (mA)	Frequency (MHz)	Pout (dBm)	Class	Package	PAE (full)	PAE (derated)	Features
MAX2235	2.7 to 5.5	20 idle 610 full	800 to 1000	+30.3	C	20-Pin TSSOP-EP	47%	22% +24dBm	Analog Gain Control, Auto Power Ramp, Shutdown
MAX2430	3.0 to 5.5	52	800 to 1000	+21.4	AB	16-Pin SO/QSOP	24%	NA	Power Control, Shutdown, Drives MAX2601/02
MAX2601	2.7 to 5.5	450	DC to 1000	+30.0	AB/C	8-Pin PSOPII	54%	18% +20dBm	Power Transistor
MAX2602	2.7 to 5.5	450	DC to 1000	+30.0	AB/C	8-Pin PSOPII	54%	18% +20dBm	Power Transistor with On-Chip Bias Diode, Power Ramp, Shutdown
MAX2264	2.7 to 5.0	34 idle, 58 avg, 95 full	824 to 849	+28.0	AB	16-Pin TSSOP-EP	32%	12% +16dBm	IS-98 CDMA U.S., Internal Switch, Smallest, Most Economical Solution
MAX2265	2.7 to 5.0	83 full	824 to 849	+28.0	AB	16-Pin TSSOP-EP	37%	7% +16dBm	IS-98 CDMA U.S., TDMA PAE = 40% at +30dBm
MAX2266	2.7 to 5.0	34 idle, 52 avg, 100 full	824 to 849	+28.0	AB	16-Pin TSSOP-EP	32%	17% +16dBm	IS-98 CDMA U.S., Off-Chip Switch, Lowest Current
MAX2267	2.7 to 4.5	34 idle, 56 avg, 95 full	887 to 925	+27.0	AB	16-Pin TSSOP-EP	28%	12% +17dBm	IS-98 CDMA Japan, Internal Switch, Smallest, Most Economical Solution
MAX2268	2.7 to 4.5	90 idle	887 to 925	+27.0	AB	16-Pin TSSOP-EP	34%	7% +13.6dBm	IS-98 CDMA Japan, PDC PAE = 41% at +29dBm
MAX2269	2.7 to 4.5	34 idle, 50 avg, 100 full	887 to 925	+27.0	AB	16-Pin TSSOP-EP	29%	17% +17dBm	IS-98 CDMA Japan, Off-Chip Switch, Lowest Current
MAX2240	2.7 to 5.0	65 idle 105 full	2400 to 2500	+20	AB	UCSP 3x3	30%	NA	Bluetooth PA with Digital Power Control, Shutdown
MAX2242	2.7 to 3.6	280 idle 300 full	2400 to 2500	+22.5	AB	UCSP 3x4	17% Pin= -7dBm 315mA	6.7% +13dBm	+22.5dBm Output Power at -33dBc ACPR for 802.11b 28.5dB Power Gain External Bias Control for Current Throttleback On-Chip Power Detector Output Power Tunable from +10dBm to +22dBm
MAX2244	3.0 to 3.6	65 idle 172 full	2400 to 2500	+22	AB	UCSP 3x3	34.2%	NA	Integrated Input Match Internal Bandwidth-Limited Power Ramping Power Control Range: 0.5V to 2.0V Supply Current = 170mA at +22dBm
MAX2245	3.0 to 3.6	65 idle 179 full	2400 to 2500	+22	AB	UCSP 3x3	29.2%	NA	Integrated Input Match Internal Bandwidth-Limited Power Ramping Power Control Range: 0.9V to 2.0V Supply Current = 170mA at +22dBm
MAX2246	3.0 to 3.6	42 idle 118 full	2400 to 2500	+20	AB	UCSP 3x3	27.8%	NA	Integrated Input Match Internal Bandwidth-Limited Power Ramping Power Control Range: 0.5V to 2.0V
MAX2247	2.7 to 3.6	293 idle 390 full	2400 to 2500	+25	AB	UCSP 3x4	24.5%	21% +22.5dBm	High Linear Output Power: +25dBm with < -33dBc ACPR (1st side lobe) and < -55dBc ACPR (2nd side lobe) 25% Efficiency with Linear Output Power 29dB Power Gain On-Chip Power Detector External Bias Control for Current Throttleback On-Chip Input Matching 0.5μA Shutdown Mode
MAX2251	2.8 to 4.5	205 idle 1029 full	824 to 849	+32.4 AMPS +30 TDMA	AB	UCSP 3x4	51% AMPS 41% TDMA	38% +30dBm AMPS	Gain: 28dB Integrated Power Detector Low-Power Shutdown Mode PAE: 41% at +30dBm for TDMA PAE: 51% at +32.4dBm for AMPS
MAX2281	2.7 to 4.2	35 idle 731 full	824 to 849	+29	AB	UCSP 5x5	+31%	14% +16dBm	PAE: 14% at +16dBm Output Power for CDMA PAE: 31% at +29dBm Output Power for CDMA PAE: 40% at +31.5dBm Output Power for AMPS PAE: 43% at +30.5dBm Output Power for TDMA Shutdown Mode
MAX2282	2.7 to 4.2	35 idle 471 full	887 to 925	+27.5	AB	UCSP 5x5	34%	17% +18dBm	PAE: 17% at +18dBm Output Power for JCDMA PAE: 34% at +27.5dBm Output Power for JCDMA 23dB Low-Power Mode Gain 28dB High-Power Mode Gain Shutdown Mode
MAX2291	2.7 to 4.2	30 idle 629 full	1850 to 1910	+29	AB	UCSP 5x5	36%	10% +15dBm	High-Power Path Gain: 27dB Low-Power Path Gain: 15dB N-CDMA PAE: 36% at +28dBm Shutdown Mode TDMA PAE: 42% at +30.5dBm W-CDMA PAE: 37% at +28dBm

表2. 针对市场选择

Market	Part	Advantages	Specs
Cellular CDMA (U.S.)	MAX2265	Low-cost, Simple Layout, Few External Components, High-peak Efficiency	Efficiency = 37% (ACPR = -45) Efficiency = 35% (ACPR = -48)
	MAX2264 MAX2266	Low-cost, World''s Lowest Talk Current	Talk Current=55mA 16dBm Efficiency =12/18% (2264/66) Peak Efficiency =32%
	MAX2281	Small Size Ultra-chip Scale Package (2.5mm x 2.5mm), Fixed or Dynamic Biasing	PAE: 14% at +16dBm Output Power for CDMA PAE: 31% at +29dBm Output Power for CDMA PAE: 40% at +31.5dBm Output Power for AMPS PAE: 43% at +30.5dBm Output Power for TDMA
	MAX2251	Small Size Ultra-chip Scale Package (2.06mm x 2.06mm), Integrated Power Detector, Low-power Shutdown Mode	Gain: 28dB PAE: 41% at +30dBm for TDMA PAE: 51% at +32.4dBm for AMPS
CDMA (Japan)	MAX2268	Low-cost, Simple Layout, Few External Components, High-peak Efficiency	Efficiency = 37% (ACPR = -45) Efficiency = 35% (ACPR = -48)
	MAX2267 MAX2269	Low-cost, World''s Lowest Talk Current	Talk Current=55mA 16dBm Efficiency =12/18% (2264/66 and ACPR=-45) Peak Efficiency =33% (ACPR=-45)
	MAX2282	Small Size Ultra-chip Scale Package (2.5mm x 2.5mm)	PAE: 17% at +18dBm Output Power for JCDMA PAE: 34% at +27.5dBm Output Power for JCDMA 23dB Low-Power Mode Gain 28dB High-Power Mode Gain
PCS CDMA	MAX2291	Small Size Ultra-chip Scale Package (2.5mm x 2.5mm), Shutdown	High-Power Path Gain: 27dB Low-Power Path Gain: 15dB N-CDMA PAE: 36% at +28dBm TDMA PAE: 42% at +30.5dBm W-CDMA PAE: 37% at +28dBm
Cellular TDMA	MAX2281	Shutdown Mode	PAE: 14% at +16dBm Output Power for CDMA PAE: 31% at +29dBm Output Power for CDMA PAE: 40% at +31.5dBm Output Power for AMPS PAE: 43% at +30.5dBm Output Power for TDMA
Cellular TDMA	MAX2251	Small Size Ultra-chip Scale Package (2.06mm x 2.06mm), Integrated Power Detector, Low-power Shutdown Mode	Gain: 28dB PAE: 41% at +30dBm for TDMA
PCS TDMA	MAX2291	Small Size Ultra-chip Scale Package (2.5mm x 2.5mm), Shutdown	High-Power Path Gain: 27dB Low-Power Path Gain: 15dB N-CDMA PAE: 36% at +28dBm TDMA PAE: 42% at +30.5dBm W-CDMA PAE: 37% at +28dBm
PDC	MAX2265	Low-cost, Simple Layout, Few External Components, High-peak Efficiency	Efficiency=40% (ACPR=-28) Pout=30dBm
AMPs	MAX2251	Small Size Ultra-chip Scale Package (2.06mm x 2.06mm), Integrated Power Detector, Low-power Shutdown Mode	Efficiency=51% Pout=32.4dBm
AMPs	MAX2265	Low-cost, Simple Layout, Few External Components, High-peak Efficiency	PAE: 48% at +31.5dBm Output Power for AMPS
WLL	MAX2265	Low-cost, Simple Layout, Few External Components, High-peak Efficiency	Efficiency=37% (ACPR=-45) Efficiency=35% (ACPR=-48)
900MHz ISM	MAX2235	Analog Gain Control, Auto Power Ramp, Shutdown	PAE: 47% at +30.3dBm Output Power
900MHz ISM	MAX2251	Small Size Ultra-chip Scale Package (2.06mm x 2.06mm), Integrated Power Detector, Low-power Shutdown Mode	Gain: 28dB PAE: 41% at +30dBm for TDMA PAE: 51% at +32.4dBm for AMPS
Bluetooth HomeRF 2.4GHz DECT	MAX2240	Small Size Ultra-chip Scale Package (1.56mm x 1.56mm), 2-bit Digital Power Control	+20dBm, Efficiency =30%
	MAX2244	Closed-loop Analog Power Control, Small Size Ultra-chip Scale Package (1.56mm x 1.56mm)	+22dBm, Efficiency = 34.2% Power control range 0.5V to 2V
	MAX2245	Closed-loop Analog Power Control, Small Size Ultra-chip Scale Package (1.56mm x 1.56mm)	+22dBm, Efficiency = 29.2% Power control range 0.9V to 2V
	MAX2246	Closed-loop Analog Power Control, Small Size Ultra-chip Scale Package (1.56mm x 1.56mm)	+20dBm, Efficiency = 27.8% Power control range 0.5V to 2V
Cellular TDMA/AMPS Dual Mode	MAX2251	Small Size Ultra-chip Scale Package (2.06mm x 2.06mm), Integrated Power Detector, Low-power Shutdown Mode	Gain: 28dB PAE: 41% at +30dBm for TDMA PAE: 51% at +32.4dBm for AMPS
802.11b WLAN	MAX2242	Integrated Power Detector, Dynamic Bias Control, Output Power Tunable from +10dBm to +22dBm	+22.5dBm Output Power at -33dBc ACPR for 802.11B 28.5dB Power Gain

[ip]