3.3 GHz Ultralow Distortion
RF/IF Differential Amplifier
ADL5562
FEATURES
FUNCTIONAL BLOCK DIAGRAM
VCC
−3 dB bandwidth of 3.3 GHz (AV = 6 dB)
Pin-strappable gain adjust: 6 dB, 12 dB, 15.5 dB
Differential or single-ended input to differential output
Low noise input stage: 2.1 nV/√Hz RTI @ AV = 12 dB
Low broadband distortion (Av = 6 dB)
10 MHz: −91 dBc HD2, −98 dBc HD3
70 MHz: −102 dBc HD2, −90 dBc HD3
140 MHz: −104 dBc HD2, −87 dBc HD3
250 MHz: −80 dBc HD2, −94 dBc HD3
IMD3s of −94 dBc at 250 MHz center
Slew rate: 9.8 V/ns
R
F
ENBL
R
G2
VON
VIP2
R
R
G1
VIP1
VIN1
VCOM
G1
R
G2
VOP
VIN2
R
F
ADL5562
Fast settling of 2 ns and overdrive recovery of 3 ns
Single-supply operation: 3 V to 3.6 V
Power-down control
GND
Figure 1.
Fabricated using the high speed XFCB3 SiGe process
APPLICATIONS
Differential ADC drivers
Single-ended to differential conversion
RF/IF gain blocks
SAW filter interfacing
GENERAL DESCRIPTION
The ADL5562 is a high performance differential amplifier
optimized for RF and IF applications. The amplifier offers low
noise of 2.1 nV/√Hz and excellent distortion performance over
a wide frequency range, making it an ideal driver for high speed
8-bit to 16-bit ADCs.
The device is optimized for wideband, low distortion performance.
These attributes, together with its adjustable gain capability,
make this device the amplifier of choice for general-purpose IF
and broadband applications where low distortion, noise, and power
are critical. This device is optimized for the best combination of
slew speed, bandwidth, and broadband distortion. These attributes
allow it to drive a wide variety of ADCs and make it ideally suited
for driving mixers, pin diode attenuators, SAW filters, and multi-
element discrete devices.
The ADL5562 provides three gain levels of 6 dB, 12 dB, and
15.5 dB through a pin-strappable configuration. For the single-
ended input configuration, the gains are reduced to 5.6 dB,
11.1 dB, and 14.1 dB. Using an external series input resistor
expands the amplifier gain flexibility and allows for any gain
selection from 0 dB to 15.5 dB.
Fabricated on an Analog Devices, Inc., high speed SiGe process,
the ADL5562 is supplied in a compact 3 mm × 3 mm, 16-lead
LFCSP package and operates over the temperature range of
−40°C to + 85°C.
The quiescent current of the ADL5562 is typically 80 mA and,
when disabled, consumes less than 3 mA, offering excellent
input-to-output isolation.
Rev. A
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