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參數(shù)資料
| 型號： | MAX9993 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Linearity 1700MHz to 2200MHz Down- Conversion Mixer with LO Buffer/Switch |
| 中文描述： | 高線性度、1700MHz至2200MHz下變頻混頻器，提供LO緩沖器/開關(guān) |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 492K |
| 代理商： | MAX9993 |
M
Detailed Description
The MAX9993 high-linearity down-conversion mixer pro-
vides 8.5dB of gain and +23.5dBm IIP3, with a 9.5dB
noise figure (typ). Integrated baluns and matching cir-
cuitry allow 50
single-ended interfaces to the RF and
LO ports. A single-pole, double-throw (SPDT) LO switch
provides 50ns switching time between LO inputs, with
typically 40dB LO-to-LO isolation. Furthermore, the inte-
grated LO buffer provides a high drive level to the mixer
core, reducing the LO drive required at the MAX9993
’
s
inputs to 0dBm to +6dBm range. The IF port incorpo-
rates a differential output, which is ideal for providing
enhanced IIP2 performance.
Specifications are guaranteed over broad frequency
ranges to allow for use in UMTS and 2G/2.5G/3G
DCS1800 and PCS1900 base stations. The MAX9993 is
specified to operate over an RF input range of
1700MHz to 2200MHz, an LO range of 1400MHz to
2000MHz, and an IF range of 40MHz to 350MHz. This
device can operate in high-side LO injection applica-
tions with an extended LO range, but performance
degrades gently as f
LO
continues to increase. See the
Typical Operating Characteristics
for measurements
taken with f
LO
up to 2400MHz. This device is available
in a compact 5mm
5mm 20-pin thin QFN package
with an exposed pad.
RF Input and Balun
The MAX9993 has one input (RF) that is internally
matched to 50
, requiring no external matching com-
ponents. A DC-blocking capacitor is required, because
the input is internally DC shorted to ground through the
on-chip balun. Input return loss is better than 15dB over
the entire RF frequency range of 1700MHz to 2200MHz.
LO Input, Switch, Buffer, and Balun
The mixer can be used for either high-side or low-side
injection applications with an LO frequency range of
1400MHz to 2000MHz. An internal LO SPDT switch
selects one of two single-ended LO ports. This allows
the external oscillator to settle on a particular frequency
before it is switched in. LO switching time is guaran-
teed to be less than 50ns. This switch is controlled by a
digital input (LOSEL): logic low selects LO1, logic high
selects LO2. LO1 and LO2 inputs are internally
matched to 50
, requiring only a 22pF DC-blocking
capacitor.
A two-stage internal LO buffer allows a wide input power
range for the LO drive. All guaranteed specifications are
for an LO signal power from 0dBm to +6dBm. A low-loss
balun along with an LO buffer drives the double-balanced
mixer. All interfacing and matching from the LO inputs to
the IF outputs are integrated on-chip.
High-Linearity 1700MHz to 2200MHz Down-
Conversion Mixer with LO Buffer/Switch
8
_______________________________________________________________________________________
PIN
1, 6, 8
NAME
V
CC
FUNCTION
Power Supply Connections. See the
Typical Application Circuit
.
2
RF
Single-Ended 50
RF Input. This port is internally matched and DC shorted to GND through a
balun. Provide a DC-blocking capacitor if required.
3
TAP
Center Tap of the Internal RF Balun. Bypass with capacitors close to the IC, as shown in the
Typical Application Circuit
.
4, 5, 10, 12,
13, 14, 17, EP
GND
Ground. Connect to supply ground. Provide multiple vias in the PC board to create a low-
inductance connection between the exposed paddle (EP) and the PC board ground.
7
9
11
15
LOBIAS
LOSEL
LO1
LO2
LO Output Bias Resistor for LO Buffer. Connect a 383
(±1%) from LOBIAS to GND.
LO Select. Logic control input for selecting LO1 or LO2.
Local Oscillator Input. LO1 selected when LOSEL is low.
Local Oscillator Input. LO2 selected when LOSEL is high.
16
LEXT
External Inductor Connection. Connect a low-ESR 10nH inductor from LEXT to GND. This inductor
carries approximately 100mA DC current.
18
IF-
Noninverting IF Output. Requires external bias to V
CC
through an RF choke (see the
Typical
Application Circuit
).
19
IF+
Inverting IF Output. Requires external bias to V
CC
through an RF choke (see the
Typical
Application Circuit
).
20
IFBIAS
IF Bias Resistor Connection for IF Amplifier. Connect a 523
(±1%) from IFBIAS to GND.
Pin Description
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| MAX9993EGP | 制造商:Maxim Integrated Products 功能描述:HIGH-LINEARITY 1700MHZ TO 2200MHZ DOWN-CONVER - Rail/Tube |
| MAX9993ETP | 功能描述:上下轉(zhuǎn)換器 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 |
| MAX9993ETP+ | 功能描述:上下轉(zhuǎn)換器 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 |
| MAX9993ETP+D | 功能描述:上下轉(zhuǎn)換器 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 |
| MAX9993ETP+T | 功能描述:上下轉(zhuǎn)換器 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 |
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