6 GHz Ultrahigh Dynamic Range
Differential Amplifier
ADL5565
Data Sheet
FEATURES
3 dB bandwidth of 6 GHz (AV = 6 dB)
FUNCTIONAL BLOCK DIAGRAM
VCC
Pin strappable gain adjust: 6 dB, 12 dB, and 15.5 dB
Gain range from 0 dB to 15.5 dB using two external resistors
Differential or single-ended input to differential output
Low noise input stage: NF = 8.7 dB at 15.5 dB gain
Low broadband distortion (AV = 6 dB)
10 MHz: −107 dBc (HD2), −110 dBc (HD3)
100 MHz: −108 dBc (HD2), −103 dBc (HD3)
200 MHz: −82 dBc (HD2), −87 dBc (HD3)
500 MHz: −68 dBc (HD2), −63 dBc (HD3)
IMD3 of −113 dBc at 100 MHz center
R
F
ENBL
VON
R
G2
VIP2
R
R
G1
VIP1
VIN1
VCOM
VOP
G1
R
G2
VIN2
Slew rate: 11 V/ns
R
F
ADL5565
Fast settling and overdrive recovery of 2 ns
Single-supply operation: 2.8 V to 5.2 V
Power down
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 ADL5565 is a high performance differential amplifier
optimized for RF and IF applications. The amplifier offers low
noise of 1.5 nV/√Hz and excellent distortion performance over
a wide frequency range making it an ideal driver for high speed
8-bit to 16-bit analog-to-digital converters (ADCs).
The quiescent current of the ADL5565 is typically 70 mA, and
when disabled, consumes less than 5 mA with −25 dB of input-
to-output isolation at 100 MHz.
The device is optimized for wideband, low distortion, and noise
performance, giving it unprecedented performance for overall
spurious-free dynamic range. These attributes, together with its
adjustable gain capability, make this device the amplifier of
choice for driving a wide variety of ADCs, mixers, pin diode
attenuators, SAW filters, and multielement discrete devices.
The ADL5565 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 5.3 dB, 10.3 dB,
and 13 dB. Using two external series resistors expands the gain
flexibility of the amplifier and allows for any gain selection from
0 dB to 15.5 dB for a differential input and 0 dB to 13 dB for a
single-ended input.
Fabricated on an Analog Devices, Inc., high speed SiGe process,
the ADL5565 is supplied in a compact 3 mm × 3 mm, 16-lead
LFCSP package and operates over the −40°C to +85°C
temperature range.
Rev. B
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