AD8347ARUZ Analog Devices Inc, AD8347ARUZ Datasheet - Page 7

• Manufacturer Part Number: AD8347ARUZ
• Description: IC QUADRATURE DEMOD 28-TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD8347ARUZ

• Function: Demodulator
• Lo Frequency: 800MHz ~ 2.7GHz
• Rf Frequency: 800MHz ~ 2.7GHz
• P1db: -30dBm
• Gain: 39.5dB
• Noise Figure: 11dB
• Current - Supply: 80mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Package / Case: 28-TSSOP
• Frequency Range: 0.8GHz To 2.7GHz
• Rf Type: Quadrature
• Supply Voltage Range: 2.7V To 5.5V
• Rf Ic Case Style: TSSOP
• No. Of Pins: 28
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin No.
18, 20
19
21
24
25, 26
27
Mnemonic
VDT2, VDT1
VAGC
VPS3
QAIN
QOPP, QOPN
COM1
ENBL
VGIN
RFIN
RFIP
Equiv.
Circuit
D
I
D
B
15
17
10
11
VPS1
2
INTERFACE
CONTROL
GAIN
AD8347
Description
Detector Inputs. These pins are the inputs to the on-board detector. VDT2 and VDT1, which have high
input impedances, are normally connected to IMXO and QMXO, respectively.
AGC Output. This pin provides the output voltage from the on-board detector. In AGC mode, connect
this pin directly to VGIN.
Positive Supply for Biasing and Baseband Sections. Decouple VPS3 with 0.1 μF and 100 pF capacitors.
Q-Channel Baseband Amplifier Input. Bias this high input impedance pin to VREF (approximately 1 V).
If QAIN is directly connected to QMXO, biasing is provided by QMXO. If an ac-coupled filter is placed
between QMXO and QAIN, this pin can be biased from VREF through a 1 kΩ resistor. The gain from
QAIN to the QOPN/QOPP differential outputs is 30 dB.
Q-Channel Differential Baseband Output. Typical output swing is equal to 760 mV p-p differential. The
common-mode level on these pins is programmed by the voltage on VCMO.
LO Section Ground.
VPS2
12
CELL
BIAS
VPS3
DET 1
VDT1
21
20
VAGC
VREF
19
14
VREF
DET 2
VDT2
18
Figure 3. Block Diagram
Rev. A | Page 7 of 28
QMXO
IMXO
22
8
QOFS
IOFS
13
16
VREF
VREF
SPLITTER
PHASE
QAIN
2
24
IAIN
6
VCMO
QOPP
IOPP
25
4
VCMO
SPLITTER
PHASE
QOPN
IOPN
1
26
3
28
23
27
5
1
7
9
VCMO
LOIN
LOIP
COM3
COM2
COM3
COM1
AD8347