AD8348ARU-REEL7 Analog Devices Inc, AD8348ARU-REEL7 Datasheet - Page 19

• Manufacturer Part Number: AD8348ARU-REEL7
• Description: IC QUADRATUR DEMOD 50MHZ 28TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD8348ARU-REEL7

• 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

VCMO. This forms a high-pass response for the baseband
signal path with a lower 3 dB frequency of
Alternatively, the user can externally adjust the dc offset by driving
IOFS (QOFS) with a digital-to-analog converter or other voltage
source. In this case, the baseband circuit operates all the way down
to dc (f
and can be easily overridden with an external voltage source.
The nominal voltage level applied to IOFS (QOFS) to produce
a 0 V differential offset at the baseband outputs is 900 mV.
f
PASS
PASS
= 0 Hz). The integrator output current is only 50 μA
=
2
π
×
2650
1
Ω
×
COFS
Rev. A | Page 19 of 28
The IOFS (QOFS) pin must be connected to either a bypass
capacitor (>0.1 μF) or an external voltage source to prevent the
feedback loop from oscillating.
The feedback loop will be broken at dc if an ac-coupled baseband
filter is placed between the mixer outputs and the baseband
amplifier inputs. If an ac-coupled filter is implemented, the user
must handle the offset compensation via some external means.
AD8348