Datasheet ADL5569 (Analog Devices)

6.5 GHz, Ultrahigh Dynamic Range, Differential Amplifier Data Sheet ADL5569 FEATURES FUNCTIONAL BLOCK DIAGRAM −3 dB bandwidth: 6.5 GHz typical PDB VCOM VCC 16 15 14 Preset 20 dB voltage gain, can be reduced by adding external resistors ADL5569 Differential or single-ended input to differential output Internally dc-coupled inputs and outputs RG RF VIN 1 13 VON Low noise input stage: 9.3 dB noise figure at 2 GHz 50Ω 500Ω GM B Low distortion at 5 V supply and 2 V p-p output with 100 Ω load RG RF VIP 2 12 VOP 500 MHz: −78 dBc (HD2), −71 dBc (HD3), −80 dBc (IMD3) 50Ω 500Ω 2 GHz: −64 dBc (HD2), −52 dBc (HD3), −65 dBc (IMD3) Input voltage noise (NSD, RTI): 1.0 nV/√Hz at 100 MHz 3 11 Single-supply operation: ac-coupled applications GND GND Dual-supply operation: dc-coupled applications Slew rate: 24 V/ns at 2 V p-p output RG RF DC power consumption: 86 mA per amplifier at 5 V VIP2 4 10 VOP2 50Ω 500Ω GM B APPLICATIONS RG RF VIN2 5 9 VON2 50Ω 500Ω Differential ADC drivers for GSPS ADCs High speed data acquisition Single-ended to differential conversion DAC buffering 6 7 8 DC coupling and level shifting PDB2 VCOM2 VCC2 RF/IF gain blocks NOTES 1. RG IS THE SERIES RESISTANCE OF THE AMPLIFIER,
001
Balun alternative from dc to 4 GHz AND RF IS THE FEEDBACK RESISTANCE OF THE AMPLIFIER.
15671-
SAW filter interfacing
Figure 1.
GENERAL DESCRIPTION
The ADL5569 is a high performance, dual, differential amplifier 3.0 V, providing a flexible capability for driving ADCs with ac with 20 dB of voltage gain, optimized for applications spanning levels up to 2 V p-p. from dc to 6.5 GHz. The amplifier is available in a dual format, Operating from a single 5 V supply, the quiescent current of the and it offers a low referred to input (RTI) noise spectral density ADL5569 is typically 86 mA per amplifier. When disabled, the (NSD) of 1.0 nV/√Hz (at 100 MHz) and excel ent distortion amplifiers consume only 8 mA per amplifier. performance over a wide frequency range, making it an ideal driver for high speed 12-bit to 16-bit analog-to-digital The device is optimized for wideband, low distortion, and low converters (ADCs). The ADL5569 is ideal y suited for use in noise operation, giving it unprecedented second harmonic high performance zero intermediate frequency (IF) and distortion (HD2) and third harmonic distortion (HD3) from complex IF receiver designs. In addition, this device has dc to 4 GHz. These attributes, together with its adjustable gain excellent low distortion for single-ended input driver capability, make this device the amplifier of choice for driving a applications. wide variety of ADCs, mixers, pin diode attenuators, surface acoustic wave (SAW) filters, and a multitude of discrete radio Using two external series resistors for each amplifier expands frequency (RF) devices. the gain flexibility of the amplifier and al ows any gain selection from 6 dB to 20 dB for a differential input. For a single-ended Fabricated on an Analog Devices, Inc., high speed silicon input, the gain can be adjusted from 6 dB to 17 dB with the germanium (SiGe) process, the ADL5569 is supplied in a addition of some external resistors. This device maintains low compact 2.5 mm × 3 mm, 16-lead LFCSP package and operates distortion through its output common-mode range of 2.0 V to over the −40°C to +85°C temperature range.
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Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Applications Information Basic Connections Input and Output Interfacing Single-Ended Input to Differential Output Gain Adjustment and Interfacing Effect of Load Capacitance GSPS ADC Interfacing Soldering Information and Recommended Land Pattern Evaluation Board Outline Dimensions Ordering Guide