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參數(shù)資料
| 型號(hào)： | RF2461 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | CDMA/FM LOW NOISE AMPLIFIER/MIXER 900MHZ DOWNCONVERTER |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, QFN-20 |
| 文件頁(yè)數(shù)： | 5/14頁(yè) |
| 文件大?。?/td> | 365K |
| 代理商： | RF2461 |
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Preliminary
8-127
RF2461
Rev A13 010607
8
F
*The bias circuitry current drop when LO signal is not present. Total LO buffer/bias circuitry current is 7mA when LO sig-
nal is present.
Pin
15
Function
IF2+
Description
First differential output pin for the second mixer. Open collector. A cur-
rent combiner external network performs a differential to single-ended
conversion and sets the output impedance. A DC blocking cap must be
present if the IF filter input has a DC path to ground. Mixer (IF2+ and
IF2-) needs to “see” a differential impedance between 2k
to 4k
.
Interface Schematic
16
17
VCC2
LO IN
VCC pin for the LO buffer/bias circuitry.*
LO limiter input pin.
18
ENABLE
This pin is used to enable or disable the RF2461. A logic high (>2.0V)
enables the circuitry. A logic low (<1.0V) disables the circuitry.
19
IP SET
Controls the setting of the LNA current. A logic low (<1.0V) selects the
internal resistance (49.5k
), resulting in an LNA current of 5mA. A
logic high (>2.0V) selects the external resistance at pin 8.
20
IF SEL
Determines which IF port is active. A logic low (<1.0V) activates IF1
and deactivates IF2. A logic high (>2.0V) activates IF2 and deactivates
IF1.
Pkg
Base
GND
Ground connection. The backside of the package should be soldered to
a top side ground pad which is connected to the ground plane with mul-
tiple vias.
IF2-
IF2+
LO IN
ENABLE
IP SET
IF SEL
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| RF2461_06 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:CDMA/FM LOW NOISE AMPLIFIER/MIXER 900MHz DOWNCONVERTER |
| RF2461_1 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:CDMA/FM LOW NOISE AMPLIFIER/MIXER 900MHz DOWNCONVERTER |
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| RF2462-000 | 功能描述:可復(fù)位保險(xiǎn)絲 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
| RF2464 | 制造商: 功能描述: 制造商:undefined 功能描述: |
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