4.5 GHz Ultrahigh Dynamic Range,

Dual Differential Amplifier

Data Sheet

ADL5566

Rev. C

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FEATURES

Fixed 16 dB gain

Channel-to-channel gain error: 0.1 dB at 100 MHz

Channel-to-channel phase error: 0.06° at 100 MHz

Differential or single-ended input to differential output

I/O dc-coupled or ac-coupled

10 MHz: −103 dBc (HD2), −107 dBc (HD3)

100 MHz: −95 dBc (HD2), −100 dBc (HD3)

200 MHz: −94.5 dBc (HD2), −87 dBc (HD3)

500 MHz: −83 dBc (HD2), −64 dBc (HD3)

IMD3 of −95 dBc at 200 MHz center

Maintains low single-ended distortion performance out to

500 MHz

Slew rate: 16 V/ns

Maintains low distortion down to 1.2 V VCOM

Fixed 16 dB gain can be reduced by adding external resistors

Fast settling and overdrive recovery of 2.5 ns

Single-supply operation: 2.8 V to 5.2 V

Power-down

Low dc power consumption, 462 mW at 3.3 V supply

APPLICATIONS

Differential ADC drivers

Single-ended to differential conversion

RF/IF gain blocks

SAW filter interfacing

FUNCTIONAL BLOCK DIAGRAM

VCOM1

VCC1/VCC2

VIN1

VIP1

ENBL1

VON1

VOP1

VCOM2

VIN2

GND

ENBL2

VIP2

VON2

VOP2

ADL5566

Figure 1.

GENERAL DESCRIPTION

The ADL5566 is a high performance, dual differential amplifier

optimized for IF and dc applications. The amplifier offers low

noise of 1.3 nV/√Hz and excellent distortion performance over

a wide frequency range, making it an ideal driver for high speed

16-bit analog-to-digital converters (ADCs). The ADL5566 is

ideally suited for use in high performance, zero IF/complex

IF receiver designs. In addition, this device has excellent low

distortion for single-ended input drive applications.

The ADL5566 provides a gain of 16 dB. For the single-ended input

configuration, the gain is reduced to 14 dB. Using two external

series resistors for each amplifier expands the gain flexibility of

the amplifier and allows for any gain selection from 0 dB to 16 dB

for a differential input and 0 dB to 14 dB for a single-ended input.

In addition, this device maintains low distortion down to output

(VOCM) levels of 1.2 V providing an added capability for driving

CMOS ADCs at ac levels up to 2 V p-p.

The quiescent current of the ADL5566, using a 3.3 V supply, is

typically 70 mA per amplifier. When disabled, it consumes less

than 3.5 mA per amplifier and has −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 (SFDR). These attributes, together

with the adjustable gain capability, make this device the amplifier of

choice for driving a wide variety of ADCs, mixers, pin diode

attenuators, SAW filters, and multi-element discrete devices.

Fabricated on an Analog Devices, Inc., high speed SiGe process, the

ADL5566 is supplied in a compact 4 mm × 4 mm, 24-lead LFCSP

package and operates over the −40°C to +85°C temperature range.