- −3 dB bandwidth of 4.3 GHz
- High performance (HP), low power (LP), and power down modes
- Preset 20 dB gain can be reduced by adding external resistors
- Channel to channel gain error: 0.04 dB at 500 MHz
- Channel to channel phase error: 0.6° at 500 MHz
- Differential or single-ended input to differential output
- Internally dc-coupled inputs and outputs
- Low noise input stage: 7.4 dB noise figure at 500 MHz
- Low broadband distortion for supply = 5 V, HPmode, and 2 Vp-p
- 200 MHz: −94 dBc (HD2), −103 dBc (HD3)
- 500 MHz: −82 dBc (HD2), −82 dBc (HD3)
- Low single-ended input distortion
- Slew rate: 20 V/ns
- Maintains low distortion for output common-mode voltage down to 1.25 V
- Single-supply operation: 3.3 V or 5 V
- Low dc power consumption: 148 mA at 5 V (HP mode), and 80 mA at 3.3 V (LP mode)
The ADL5567 is a high performance, dual differential amplifier optimized for intermediate frequencies (IF) and dc applications. The amplifier offers a low noise of 1.29 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 ADL5567 is ideally suited for use in high performance zero-IF and complex IF receiver designs. In addition, this device has excellent low distortion for single-ended input driver applications.
The ADL5567 provides a gain of 20 dB. For the single-ended input configuration, the gain is reduced to 18 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 20 dB for a differential input and 0 dB to 18 dB for a single-ended input. In addition, this device maintains low distortion down to output common-mode levels of 1.25 V, and therefore providing an added capability for driving CMOS ADCs at ac levels up to 2 V p-p.
The quiescent current of the ADL5567 using a 5 V supply is typically 74 mA per amplifier in high performance mode. When disabled, each amplifier consumes only 3.5 mA, and has 58 dB input to output isolation at 100 MHz.
The device is optimized for wideband, low distortion, and low noise operation, giving it unprecedented performance for overall spurious-free dynamic range (SFDR). 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.
Fabricated on an Analog Devices, Inc., high speed silicon germanium (SiGe) process, the ADL5567 is supplied in a compact 4 mm × 4 mm, 24-lead LFCSP package and operates over the −40°C to +85°C temperature.
- Differential ADC drivers
- Single-ended to differential conversions
- RF/IF gain blocks
- SAW filter interfacing
ADL5567-EVALZ is a fully populated, 4-layer, FR4-based evaluation board. For normal operation, it requires a 3.3 V or 5 V power supply capable of delivering up to 250 mA. In the default configuration, a single-ended input signal for each channel comes in through an SMA connector, to be converted into differential form through the on-board balun. The differential signals from each amplifier channel likewise pass through a balun, to be converted into single-ended form and output through an SMA connector. The signal paths can also be configured as fully differential with the baluns removed and bypassed. Additional jumpers allow the amplifiers to be placed into High Power or Low Power modes, and each channel can also be disabled separately by means of jumper selection.
The AD-FMCADC7-EBZ is a single channel high speed data acquisition board featuring the AD9625 12bit, ADC sampling at 2500 MSPS and a ADL5567 low distortion, 4.8 GHz, differential amplifier driving the converter. The FMC form factor supports the JESD204B high speed serial interface. All clocking is supported using the on-board ADF4355-2 wideband PLL with VCO. This product is designed for sampling wide bandwidth analog signals from DC to 1.8GHz. The combination of wide input bandwidth, high sampling rate, and excellent linearity of the AD9625 is ideally suited for spectrum analyzers, data acquisition systems, and a wide assortment of military electronics applications.
The board meets most of the FMC specifications in terms of mechanical size, mounting hole locations, and more. Although this board does meet most of the FMC specifications, it’s not meant as a commercial off the shelf (COTS) board. If you want a commercial, ready to integrate product, please refer to one of the many FMC manufacturers and the FMC specification (ANSI/VITA 57.1).
This board is targeted to use the ADI reference designs that work with Xilinx development systems. ADI provides complete source (HDL and software) to re-create those projects (minus the IP provided by the FPGA vendors, which we use), but may not provide enough info to port this to your custom platform.
The design of the board is specifically tailored to allow for true DC coupling on the analog input of the amplifier throughout the signal chain to the converter. Yielding the widest spectrum possible for the AD-FMCADC7-EBZ.
The reference design includes the device data capture via the JESD204B serial interface and the SPI interface. The samples are written to the external DDR-DRAM. It allows programming the device and monitoring it’s internal registers via SPI.
Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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