AD831 Analog Devices, AD831 Datasheet - Page 11

• Manufacturer Part Number: AD831
• Description: High-Performance, Low Distortion 500-MHz Mixer
• Manufacturer: Analog Devices

REV. B
Single Supply Operation
Figure 26 is similar to the dual supply circuit in Figure 19. Sup-
plies may be as low as 9 V but should not be higher than
11 V due to power dissipation. As in Figure 19, both the RF
and LO ports are driven single-ended and terminated.
INPUT
RF
C1
L1
C2
Figure 26. Connections for +9 V Single-Supply Operation
0.1µF
+9V
4
5
6
7
8
0.1µF
GND
RFP
RFN
VN
VN
VP
3
9
AN
0.1µF
50
LON
10
2
IFN
51.1
82pF
LO INPUT
–10 dBm
+9V
11
LOP
1
0.1µF
VP
82pF
Top View
0.1µF
AD831
–11–
+9V
20
VP
12
0.1µF
IFP
50
In single supply operation, the COM terminal is the “ground”
reference for the output amplifier and must be biased to 1/2 the
supply voltage, which is done by resistors R1 and R2. The OUT
pin must be ac-coupled to the load.
GND
19
13
AP
BIAS
COM
VFB
OUT
VN
18
17
16
15
14
NC
5k
5k
+5V
51.1
0.1µF
R2
R1
110
R
T
C
C
IF
OUTPUT
AD831