AD8348ARU Analog Devices Inc, AD8348ARU Datasheet - Page 24

• Manufacturer Part Number: AD8348ARU
• Description: IF QUADRATURE DEMODULATOR
• Manufacturer: Analog Devices Inc

Specifications of AD8348ARU

• Rohs Compliant: NO
• Rohs Status: RoHS non-compliant
• Function: Demodulator
• Lo Frequency: 100MHz ~ 2GHz
• Rf Frequency: 50MHz ~ 1GHz
• P1db: -22dBm
• Gain: 25.5dB
• Noise Figure: 10.75dB
• Current - Supply: 58mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Package / Case: 28-TSSOP

AD8348
differential impedance of 200 Ω (100 Ω per side). The
differential inputs should then be fed into SMA connectors
MXIP and MXIN.
Mixer Outputs
The I and Q mixer outputs are available through the IMXO and
QMXO SMA connectors. These outputs are biased to VCMO
and are not designed to drive loads smaller than 200 Ω. To
prevent damage to test equipment that cannot tolerate dc biases,
pads for series dc-blocking capacitors are provided. These pads
are populated with 0 Ω by default.
IMXO
OPEN
ENBL
IOPN
IOPP
J1I
J3I
J2I
IFIP
R2I
LK2I
VCMO
OPEN
C7I
VENB
C10I
0Ω
IOPN
IOPP
GND
VCMO
OPEN
OPEN
OPEN
L3I
C3I
10kΩ
+V
IMXO
R12
+V
C6I
ENBL
S
57.6Ω
S
OPEN
OPEN
R31
C9I
C8I
0.1µF
SW11
OPEN
OPEN
C52
174Ω
C2I
OPEN
L2I
R32
DENBL
C5I
C54
0.1µF
1000pF
1000pF
49.9Ω
C32
C31
0.1µF
R11
C13
100pF
OPEN
OPEN
R5I
R4I
0Ω
0Ω
C51
OPEN
L1I
C1I
C4I
C53
100pF
49.9Ω
R3I
OPEN
LK5I
R1I
LK4I
LK3I
LK1I
C0I
0.1µF
IOFS
LK11
J21
Figure 60. Evaluation Board Schematic
LO
VREF
1000pF
C21
10
11
12
13
14
1
2
3
4
5
6
7
8
9
LOIP
VPOS1 COM1
IOPN
IOPP
VCMO
IAIN
COM3
IMXO
COM2 VPOS3
IFIN
IFIP
VPOS2
IOFS
VREF
Rev. A | Page 24 of 28
AD8348
60.4Ω
4
3
R21
5
1
QMXO
QOPN
QOPP
COM3
ENVG
QOFS
ENBL
4.7µF
QAIN
MXIN
ETC1-1-13
LOIN
MXIP
VGIN
C11
T21
C22
1000pF
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Baseband Outputs
The baseband outputs are made available at the IOPP, IOPN,
QOPP, and QOPN test points and SMA connectors. These
outputs are not designed to be connected directly to 50 Ω loads
and should be presented with loads of approximately 2 kΩ or
greater.
The dc bias level of the baseband amplifier outputs are by
default tied to VREF through LK11. If desired, the dc bias level
can be changed by removing LK11 and driving a dc voltage
onto the VCMO test point.
QOFS
LK4Q
LK3Q
LK1Q
LK5Q
OPEN
R1Q
49.9Ω
R3Q
C0Q
0.1µF
100pF
C4Q
OPEN
C55
OPEN
OPEN
L1Q
C1Q
R5Q
R4Q
0Ω
+V
0Ω
VCMO
GND
+V
S
0.1µF
C55
S
C41
1µF
SW13
C5Q
OPEN
OPEN
OPEN
C2Q
L2Q
10kΩ
R14
IF
C8Q
OPEN
C9Q
OPEN
+V
POT
EXT
S
QMXO
C6Q
OPEN
OPEN
OPEN
OPEN
OPEN
SW12
C3Q
R44
R43
L3Q
OPEN
R13
MX
QOPN
GND
QOPP
C10Q
0Ω
ETK4-2T
C12
0.1µF
C7Q
OPEN
1000pF
1000pF
T41
C43
C42
LK2Q
R42
0Ω
R41
OPEN
10kΩ
R2Q
OPEN
VCMO
POT
R15
VGIN
J3Q
QOPN
J2Q
QOPP
J1Q
QMXO
MXIN
MXIP