MAX9993ETP+ Maxim Integrated Products, MAX9993ETP+ Datasheet - Page 8

• Manufacturer Part Number: MAX9993ETP+
• Description: Up-Down Converters IC MIXER DOWN CONV Hz to 2200MHz Downco
• Manufacturer: Maxim Integrated Products

Specifications of MAX9993ETP+

• Maximum Input Frequency: 2200 MHz
• Maximum Power Dissipation: 2200 mW
• Mounting Style: SMD/SMT
• Maximum Operating Frequency: 350 MHz
• Maximum Power Gain: 8.5 dB
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TQFN-20 EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 50Ω 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
Typical Operating Characteristics for measurements
taken with f
in a compact 5mm
with an exposed pad.
High-Linearity 1700MHz to 2200MHz Down-
Conversion Mixer with LO Buffer/Switch
8
13, 14, 17, EP
4, 5, 10, 12,
_______________________________________________________________________________________
1, 6, 8
PIN
11
15
16
18
19
20
2
3
7
9
LO
up to 2400MHz. This device is available
LOBIAS
LOSEL
IFBIAS
NAME
LEXT
GND
V
TAP
LO1
LO2
IF+
✕
RF
IF-
LO
CC
Detailed Description
5mm 20-pin thin QFN package
continues to increase. See the
Power Supply Connections. See the Typical Application Circuit.
Single-Ended 50Ω RF Input. This port is internally matched and DC shorted to GND through a
balun. Provide a DC-blocking capacitor if required.
Center Tap of the Internal RF Balun. Bypass with capacitors close to the IC, as shown in the
Typical Application Circuit.
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.
LO Output Bias Resistor for LO Buffer. Connect a 383Ω (±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.
External Inductor Connection. Connect a low-ESR 10nH inductor from LEXT to GND. This inductor
carries approximately 100mA DC current.
Noninverting IF Output. Requires external bias to V
Application Circuit).
Inverting IF Output. Requires external bias to V
Application Circuit).
IF Bias Resistor Connection for IF Amplifier. Connect a 523Ω (±1%) from IFBIAS to GND.
The MAX9993 has one input (RF) that is internally
matched to 50Ω, 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.
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 50Ω, 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.
FUNCTION
CC
LO Input, Switch, Buffer, and Balun
through an RF choke (see the Typical
CC
through an RF choke (see the Typical
RF Input and Balun
Pin Description