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參數(shù)資料
| 型號： | MAX9994 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | SiGe High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch |
| 中文描述： | SiGe、高線性度、1700MHz至2200MHz下變頻混頻器，帶有LO緩沖器/開關(guān) |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 548K |
| 代理商： | MAX9994 |
M
Detailed Description
The MAX9994 high-linearity downconversion mixer pro-
vides 8.3dB of conversion gain and 26.2dBm of IIP3,
with a typical 9.7dB noise figure. The integrated baluns
and matching circuitry allow for 50
single-ended inter-
faces to the RF and the two LO ports. A single-pole,
double-throw (SPDT) switch provides 50ns switching
time between the two LO inputs with 45dB of LO-to-LO
isolation. Furthermore, the integrated LO buffer pro-
vides a high drive level to the mixer core, reducing the
LO drive required at the MAX9994
’
s inputs to a range
of -3dBm to +3dBm. The IF port incorporates a differ-
ential output, which is ideal for providing enhanced IIP2
performance.
Specifications are guaranteed over broad frequency
ranges to allow for use in UMTS, cdma2000, and
2G/2.5G/3G DCS1800 and PCS1900 base stations. The
MAX9994 is specified to operate over a 1700MHz to
2200MHz RF frequency range, a 1400MHz to 2000MHz
LO frequency range, and a 40MHz to 350MHz IF fre-
quency range. Operation beyond these ranges is pos-
sible; see the
Typical Operating Characteristics
for
additional details.
This device can operate in high-side LO injection appli-
cations with an extended LO range, but performance
degrades as f
LO
continues to increase. See the
Typical
Operating Characteristics
for measurements taken with
f
LO
up to 2200MHz. The MAX9996
—
a variant of the
MAX9994
—
provides better high-side performance
since it is tuned for a higher LO range of 1900MHz to
2400MHz. Contact the factory for details. As a result of
these higher LO frequencies, the MAX9996 may also
be a better choice for extending the RF frequency
range beyond 2200MHz.
RF Input and Balun
The MAX9994 RF input is internally matched to 50
,
requiring no external matching components. A DC-
blocking capacitor is required because the input is
internally DC shorted to ground through the on-chip
balun. Input return loss is typically 21dB over the entire
1700MHz to 2200MHz RF frequency range.
LO Inputs, Buffer, and Balun
The MAX9994 can be used for either high-side or low-
side injection applications with a 1400MHz to 2000MHz
LO frequency range. For a device with a 1900MHz to
2400MHz LO frequency range, refer to the MAX9996
SiGe High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1, 6, 8, 14
V
CC
Power-Supply Connection. Bypass each V
CC
pin to GND with capacitors as shown in the
Typical
Application Circuit
.
2
RF
Single-Ended 50
RF Input. This port is internally matched and DC shorted to GND through a balun.
Requires an external DC-blocking capacitor.
3
TAP
Center Tap of the Internal RF Balun. Bypass to GND with capacitors close to the IC, as shown in the
Typical Application Circuit
.
4, 5, 10, 12,
13, 17
GND
Ground
7
9
11
15
LOBIAS
LOSEL
LO1
LO2
Bias Resistor for Internal LO Buffer. Connect a 549
±
1% resistor from LOBIAS to the power supply.
Local Oscillator Select. Logic control input for selecting LO1 or LO2.
Local Oscillator Input 1. Drive LOSEL low to select LO1.
Local Oscillator Input 2. Drive LOSEL high to select LO2.
16
LEXT
External Inductor Connection. Connect a low-ESR, 10nH inductor from LEXT to GND. This inductor
carries approximately 100mA DC current.
18, 19
IF-, IF+
Differential IF Outputs. Each output requires external bias to V
CC
through an RF choke (see the
Typical Application Circuit
).
20
EP
IFBIAS
GND
IF Bias Resistor Connection for IF Amplifier. Connect an 806
resistor from IFBIAS to GND.
Exposed Ground Paddle. Solder the exposed paddle to the ground plane using multiple vias.
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| MAX9994ETP | 功能描述:上下轉(zhuǎn)換器 SiGe 1700-2200MHz Downconversion Mixer RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| MAX9994ETP+ | 功能描述:上下轉(zhuǎn)換器 SiGe 1700-2200MHz Downconversion Mixer RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| MAX9994ETP+D | 制造商:Maxim Integrated Products 功能描述:UP/DOWN CONV MIXER 5V 2.2GHZ 20TQFN EP - Rail/Tube |
| MAX9994ETP+T | 功能描述:上下轉(zhuǎn)換器 SiGe 1700-2200MHz Downconversion Mixer RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| MAX9994ETP+TD | 制造商:Maxim Integrated Products 功能描述:UP/DOWN CONV MIXER 5V 2.2GHZ 20TQFN EP - Tape and Reel |
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