Fully Differential, 10 GHz ADC Driver

with 10 dB Gain

Data Sheet

ADL5580

Rev. 0

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FEATURES

−3 dB bandwidth: 10.0 GHz

Preset 10 dB gain, can be reduced by adding external

resistors

Differential or single-ended input to differential output

Internally dc-coupled inputs and outputs

Input voltage noise (NSD, RTI): 2.25 nV/√Hz at 100 MHz

Low noise input stage: 11.3 dB noise figure at 1 GHz

Low distortion with +5.0 V and −1.8 V supplies and 1.4 V p-p

output differential with a 50 Ω||1 pF load differential

2 GHz: −59.4 dBc (HD2), −54.3 dBc (HD3), −68.2 dBc (IMD3)

6 GHz: −66 dBc (HD2), −88.1 dBc (HD3), −48.3 dBc (IMD3)

276 mA positive supply current at 5.0 V typical

−224 mA negative supply current at −1.8 V typical

Power disable

APPLICATIONS

Instrumentation and defense applications

FUNCTIONAL BLOCK DIAGRAM

2

4

14

12

VINP

VINN

5V

–1.8V

VOUTP

ADL5580

VOUTN

Figure 1.

GENERAL DESCRIPTION

The ADL5580 is a high performance, single-ended or differential

amplifier with 10 dB of voltage gain, optimized for applications

spanning from dc to 10.0 GHz. The amplifier offers a low referred

to input (RTI) noise spectral density (NSD) of 2.24 nV/√Hz (at

1000 MHz) and is optimized for distortion performance over a

wide frequency range, making the device an ideal driver for

high speed 12-bit to 16-bit analog-to-digital converters (ADCs).

The ADL5580 is suited for use in high performance, zero

intermediate frequency (IF), and complex IF receiver designs.

In addition, this device has low distortion for single-ended

input driver applications.

By using two external series resistors, the gain selection from

10 dB for a differential input can be modified to a lower gain.

The device maintains low distortion through its output

capability for driving ADCs with full-scale levels up to 1.4 V p-p.

Operating from a +5 V and −1.8 V supply, the positive and

negative supply current of the ADL5580 is typically +276 mA

and −224 mA, respectively. The device has a power disable

feature, and when disabled, the amplifier consumes 2 mA.

The ADL5580 is optimized for wideband, low distortion, and

low noise operation at the dc to 10.0 GHz frequency range.

These attributes, together with its adjustable gain capability,

make this device an optimal choice for driving a wide variety of

ADCs, mixers, pin diode attenuators, surface acoustic wave

(SAW) filters, and a multiplicity of discrete RF devices.

Fabricated on an Analog Devices, Inc., high speed silicon

germanium (SiGe) process, the ADL5580 is supplied in a

compact 4 mm × 4 mm, 20-terminal land grid array (LGA)

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

range.