|
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 | | AB | UCSP
3x4 | | 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 | | 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 | | 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 | | 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 |
16-pin PQSOP Package Outline
16/20-pin TSSOP-EP Package Outline 16-pin SO/QSOP Package Outline 8-pin PSOPII Package Outline 9-pin USCP Package Outline 12-pin USCP Package Outline 25-pin USCP Package Outline (52RD.com)
|
提升卡
变色卡
千斤顶
