AD831APZ Analog Devices Inc, AD831APZ Datasheet - Page 19

• Manufacturer Part Number: AD831APZ
• Description: IC MIXER DWNCONV LOW DIST 20PLCC
• Manufacturer: Analog Devices Inc
• Series: AD831r

Specifications of AD831APZ

• Rf Type: HF, VHF
• Frequency: 500MHz
• Number Of Mixers: 1
• Gain: 0dB
• Noise Figure: 14dB
• Secondary Attributes: Down Converter
• Current - Supply: 125mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Package / Case: 20-LCC (J-Lead)
• Supply Voltage Range: ± 4.5V To ± 5.5V
• Rf Ic Case Style: PLCC
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Termination Type: SMD
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

APPLICATIONS INFORMATION
LOW FREQUENCY APPLICATIONS
The ADL5350 can be used in low frequency applications. The
circuit in Figure 59 is designed for an RF of 136 MHz to 176 MHz
and an IF of 45 MHz using a high-side LO. The series and
parallel resonant circuits are tuned for 154 MHz, which is
the geometric mean of the desired RF frequencies. The
performance of this circuit is depicted in Figure 60.
40
35
30
25
20
15
10
Figure 59. 136 MHz to 176 MHz RF Downconversion Schematic
136
Figure 60. Measured Performance for Circuit in Figure 59
ALL INDUCTORS
ARE 0603CS
SERIES FROM
COILCRAFT
RF
Using High-Side LO Injection and 45 MHz IF
IF
146
36nH
36nH
RF FREQUENCY (MHz)
27pF
RF/IF
RF/IF
8
1
10nF
156
27pF
GND2
NC
ADL5350
7
2
LOSS
IP1dB
4.7µF
IIP3
LO
VPOS
LOIN
3V
6
3
166
100nF
100nH
1nF
GND1
NC
5
4
176
12
10
8
6
4
2
0
Rev. 0 | Page 19 of 24
HIGH FREQUENCY APPLICATIONS
The ADL5350 can be used at extended frequencies with
some careful attention to board and component parasitics.
Figure 61 is an example of a 2560 MHz to 2660 MHz down-
conversion using a low-side LO. The performance of this circuit
is depicted in Figure 62. Note that the inductor and capacitor
values are very small, especially for the RF and IF ports. Above
2.5 GHz, it is necessary to consider alternate solutions to avoid
unreasonably small inductor and capacitor values.
The typical networks used for cellular applications below
2.6 GHz use band-select and band-reject networks on the RF
and IF ports. At higher RF frequencies, these networks are not
easily realized by using lumped element components. As a result, it
is necessary to consider alternate filter network topologies to
allow more reasonable values for inductors and capacitors.
Figure 61. 2560 MHz to 2660 MHz RF Downconversion Schematic
35
30
25
20
15
10
5
0
2560
Figure 62. Measured Performance for Circuit in Figure 61
ALL INDUCTORS
ARE 0302CS
SERIES FROM
COILCRAFT
RF
Using Low-Side LO Injection and 374 MHz IF
IF
2580
0.67nH
1.5nH
RF FREQUENCY (MHz)
2600
1pF
RF/IF
RF/IF
8
1
IP1dB
LOSS
1nF
IIP3
0.7pF
GND2
NC
ADL5350
7
2
2620
4.7µF
3.0nH
LO
VPOS
LOIN
3V
6
3
100pF
2.1nH
100pF
2640
GND1
NC
5
4
ADL5350
2660
14
13
12
11
10
9
8
7