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參數(shù)資料
| 型號(hào)： | MAX2267 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers |
| 中文描述： | +2.7V、單電源、蜂窩頻段線性功率放大器 |
| 文件頁(yè)數(shù)： | 13/16頁(yè) |
| 文件大?。?/td> | 186K |
| 代理商： | MAX2267 |
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+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
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ence, so the current out of this pin is inversely propor-
tional to the value of the resistor between this pin and
ground. Similarly, the bias current of the first stage in
high-power mode is proportional to the current flowing
out of BIAS1H. The current in the second stage is pro-
portional to the currents out of BIAS2L and BIAS2H for
low- and high-power modes, respectively.
Additionally, these resistors allow for customization of
gain and alternate- and adjacent-channel power ratios.
Increasing the bias current in the first stage increases the
gain and improves alternate-channel power ratio at the
expense of efficiency. Increasing the bias current in the
second stage increases gain at the expense of efficiency
as well as adjacent- and alternate-channel power ratios.
The PA bias current can be dynamically adjusted by
summing a current into the bias pin of interest with an
external source such as a DAC. See the MAX2268
Typical Application Circuit
for using a voltage DAC and
current setting resistors RTB1 and RTB2. Choosing
RTB1 = R1 and RTB2 = R2 allows current adjustment
between 0mA to double the nominal idle current with
DAC voltages between 0V and 2.4V. The DAC must be
able to source approximately 100μA.
Shutdown Mode
Pull pins 2 and 6 low to place the MAX2267/MAX2268/
MAX2269 into shutdown mode. In this mode, all gain
stages are disabled and supply current drops to 0.5μA.
Applications Information
Increasing Efficiency
The MAX2269 incorporates an additional external
switch to increase efficiency to 17% at +17dBm and to
29% at +27dBm. This increase in efficiency is mainly
due to the additional isolation between the high- and
low-power outputs provided by the external switch.
External Components
The MAX2267/MAX2268/MAX2269 require matching
circuits at their inputs and outputs for operation in a
50
system. The simplified application circuits in
Figures 1, 2, and 3 describe the topology of the circuit-
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
B
RFIN
L1
PWR
V
CC
V
CC
V
CC
V
CC
SHDN
L3
C3
C4
L4
RH1
RL2
C1
C12
C11
L2
C2
RH2
C13
C8
C7
RFOUT
C9
C5
RL1
C6
L6
L5
OPTIONAL NOISE-REDUCTION CIRCUIT
V
CC
MAX2267
Figure 1. MAX2267 Typical Application Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2267EUE | +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers |
| MAX2268EUE | +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers |
| MAX2269EUE | +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers |
| MAX2307_1 | Evaluation Kit |
| MAX2307EVKIT-T | Evaluation Kit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2267E/D | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX2267EUE | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX2267EUE+ | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX2267EUE+T | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX2267EUE-T | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
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