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參數(shù)資料
| 型號： | MAX2268EUE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 衰減器 |
| 英文描述： | +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers |
| 中文描述： | 887 MHz - 925 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 186K |
| 代理商： | MAX2268EUE |
M
+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
12
______________________________________________________________________________________
Detailed Description
The MAX2267/MAX2268/MAX2269 are linear power
amplifiers (PAs) intended for CDMA and TDMA applica-
tions. The devices have been fully characterized in the
887MHz to 925MHz Japanese cellular band and can be
used from 750MHz to 1000MHz by adjusting the input
and output match. In CDMA applications, they provide
+27dBm of output power and up to 35% power-added
efficiency (PAE) from a single +2.7V to +4.5V supply.
An inherent drawback of traditional PAs is that their effi-
ciency drops rapidly with reduced output power. For
example, in a PA designed for maximum efficiency at
+27dBm, the efficiency at +15dBm falls well below
4.5% (over 200mA from a 3.5V supply). This behavior
significantly reduces talk time in CDMA phones
because over 90% of the time they are at output pow-
ers below +16dBm. The MAX2267/MAX2268/MAX2269
are optimized for lowest current draw at output powers
that are most likely to occur in real-life situations. This
provides up to 50% reduced average PA current.
High-Power and Low-Power Modes
The MAX2267/MAX2269 are designed to provide opti-
mum PAE in both high- and low-power modes. For a
+3.5V supply, maximum output power is +27dBm in
high-power mode. In low-power mode, output power is
+17dBm and +17.5dBm, respectively. Use the sys-
tem’s microcontroller to determine required output
power, and switch between the two modes as appropri-
ate with the PWR logic pin.
Bias Control
The bias current of the first stage in low-power mode is
proportional to the current flowing out of BIAS1L. The
voltage at BIAS1L is fixed by an internal bandgap refer-
Pin Description
IN1
RF Input Port. Requires external matching network.
1
1
IN0
RF Input Port. Requires external matching network.
—
16
BIAS1L
OUT0
NFP
GND
BIAS2H
BIAS1H
SHDN
BIAS2L
OUT1
V
CC
PWR
NAME
Low-Power Mode First Stage Bias Control. See
General Description
.
—
10
RF Output Port. Requires an appropriate output matching network and collector
bias.
—
11
Noise Filtering Pin. Connect noise filtering network as described in
Noise Filtering
section. If unused, leave open.
12
12
Ground. Solder the package slug to high-thermal-conductivity circuit board
ground plane.
13, Slug
13, Slug
High-Power Mode Second Stage Bias Control. See
General Description
.
15
15
High-Power Mode First Stage Bias Control. See
General Description
.
4
4
Shutdown Control Input. Drive
SHDN
low to enable shutdown. Drive high for
normal operation. On the MAX2268, make sure that both pins get driven simulta-
neously. To place the MAX2267 into shutdown mode, also pull the PWR pin low.
2, 6
6
Low-Power Mode Second Stage Bias Control. See
General Description
.
—
7
RF Output Ports. Require an appropriate output matching network and collector
bias.
8, 9
8, 9
Voltage Supply. It is critical to bypass these pins with capacitors to GND as
close to the pins as possible.
3, 5
3, 5, 14
Mode-Select Input. Drive low to select the low-power mode (BIAS1L and
BIAS2L). Drive high to select high-power mode (BIAS1H and BIAS2H).
—
2
PIN
MAX2268
MAX2267
MAX2269
FUNCTION
N.C.
Not internally connected. Do not make any connections to these pins.
7, 10, 11, 14,
16
—
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2269EUE | +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers |
| MAX2307_1 | Evaluation Kit |
| MAX2307EVKIT-T | Evaluation Kit |
| MAX2307 | Low-Power Cellular Upconverter-Driver |
| MAX2335_1 | Evaluation Kit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2268EUE+ | 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: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 |
| MAX2268EUE+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: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 |
| MAX2268EUE-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: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 |
| MAX2268EVKIT | 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: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 |
| MAX2269 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:+2.7V.Single-Supply.Cellular-Band Linear Power Amplifiers |
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