300 MHz to 1100 MHz Balanced Mixer,
LO Buffer, and RF Balun
Data Sheet
ADL5369
FEATURES
FUNCTIONAL BLOCK DIAGRAM
VCMI
20
IFOP
19
IFON
18
PWDN
17
COMM
16
RF frequency range of 300 MHz to 1100 MHz
IF frequency range of 30 MHz to 450 MHz
Power conversion loss: 6.2 dB
ADL5369
1
2
3
4
5
15
14
13
12
11
VPMX
RFIN
LOI2
SSB noise figure of 7.2 dB
Input IP3 of 28 dBm
Typical LO interface return loss of 0 dBm
Single-ended, 50 Ω RF and LO input ports
High isolation SPDT LO input switch
Typical single-supply operation: 3.3 V to 5 V
Exposed pad, 5 mm × 5 mm, 20-lead LFCSP
VPSW
VGS1
VGS0
LOI1
RFCT
COMM
COMM
BIAS
GENERATOR
APPLICATIONS
Cellular base station receivers
Transmit observation receivers
Radio link downconverters
6
7
LGM3
8
9
10
VLO3
VLO2
LOSW
NIC
NIC = NOT INTERNALLY CONNECTED.
Figure 1.
GENERAL DESCRIPTION
The ADL5369 uses a highly linear, doubly balanced passive mixer
core along with integrated radio frequency (RF) and local oscillator
(LO) balancing circuitry to allow single-ended operation. The
ADL5369 incorporates an RF balun, allowing optimal performance
over a 300 MHz to 1100 MHz RF input frequency range. The
balanced passive mixer arrangement provides good LO to RF
leakage, typically better than −25 dBm, and excellent intermod-
ulation performance. The balanced mixer core also provides
extremely high input linearity, allowing the device to be used in
demanding cellular applications where in-band blocking signals
may otherwise result in the degradation of dynamic perform-
ance. The passive mixer core yields a typical power conversion loss
of 6.2 dB.
The ADL5369 provides two switched LO paths that can be
used in time division duplex (TDD) applications where it is
desirable to rapidly switch between two local oscillators. LO
current can be externally set using a resistor to minimize dc
current commensurate with the desired level of performance.
For low voltage applications, the ADL5369 is capable of operation
at voltages down to 3.3 V with substantially reduced current.
Under low voltage operation, an additional logic pin is provided
to power down (<200 μA) the circuit when desired.
The ADL5369 is fabricated using a BiCMOS high performance
IC process. The device is available in a 5 mm × 5 mm, 20-lead
LFCSP and operates over a −40°C to +85°C temperature range.
An evaluation board is also available.
Table 1. Passive Mixers
RF Frequency Single
Single Mixer
and IF Amp
Dual Mixer
and IF Amp
(MHz)
Mixer
300 to 1100
500 to 1700
1200 to 2500
2200 to 2700
ADL5369
ADL5367
ADL5365
Not applicable
ADL5357
ADL5355
Not applicable
ADL5358
ADL5356
Not
ADL5353
ADL5354
applicable
2300 to 2900
ADL5363
Not applicable
Not applicable
Rev. A
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