AD8368ACPZ-REEL7 Analog Control Variable Gain Amplifiers (VGAs) by Analog Devices

Status: Production
Series: AD8368
RoHS: Compliant
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The AD8368 is a variable gain amplifier (VGA) with analog linear-in-dB gain control that can be used from low frequencies to 800 MHz. Its excellent gain range, conformance, and flatness are attributed to the Analog Devices, Inc. X-AMP® architecture, an innovative technique for implementing high performance variable gain control.The gain range of −12 dB to +22 dB is scaled accurately to 37.5 dB/V with excellent conformance error. The AD8368 has a 3 dB bandwidth of 800 MHz that is nominally independent of gain setting. At 140 MHz, the OIP3 is 33 dBm at maximum gain. The output noise floor is −143 dBm/Hz, which corresponds to a 9.5 dB noise figure at maximum gain. The single-ended input and output impedances are nominally 50 Ω.The gain of the AD8368 can be configured to be an increasing or decreasing function of the gain control voltage depending on whether the MODE pin is pulled to the positive supply or to ground, respectively. When MODE is pulled high, the AD8368 operates as a typical VGA with increasing gain.By connecting MODE to ground and using the on-board rms detector, the AD8368 can be configured as a complete automatic gain control (AGC) system with RSSI. The output power is accurately leveled to the internal default setpoint of 63 mV rms (−11 dBm referenced to 50 Ω), independent of the waveform crest factor. Because the uncommitted detector input is available at DETI, the AGC loop can level the signal at the AD8368 output or at any other point in the signal chain over a maximum input power range of 34 dB. Furthermore, the setpoint level can be raised by dividing down the output signal before applying it to the detector.The AD8368 operates from a supply voltage of 4.5 V to 5.5 V and consumes 60 mA of current. It can be fully powered down to <3 mA by grounding the ENBL pin. The AD8368 is fabricated using the Analog Devices proprietary SiGe SOI complementary bipolar IC process. It is available in a 24-lead LFCSP and operates over the industrial temperature range of −40°C to +85°C. Application boards are available upon request.

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Prices starting from US$4.22

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Analog Devices
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Newark Electronics
from US$8.23
776
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Chip One Stop
from US$4.22
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element14
from US$8.47
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Farnell
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Richardson RFPD
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Features

Analog variable gain range: −12 dB to +22 dB
Linear-in-dB scaling: 37.5 dB/V
3 dB bandwidth: 800 MHz @ VGAIN = 0.5 V
Integrated rms detector
P1dB: 16 dBm @ 140 MHz
Output IP3: 33 dBm @ 140 MHz
Noise figure at maximum gain: 9.5 dB @ 140 MHz
Input and output impedances: 50 Ω
Single-supply voltage from 4.5 V to 5.5 V
RoHS-compliant, 24-lead LFCSP

Alternative Descriptions

IF AGC Amplifier | Analog Devices
Rf Amplifier, Lfcsp-Ep, -40 To 85Deg C | Newark Electronics
RF AMPLIFIER, LFCSP-EP, -40 TO 85DEG C | element14
DETECTOR/CONTROLLER | Richardson RFPD


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD8368ACPZ-REEL7?

Additional datasheets, footprints and schematics for AD8368ACPZ-REEL7 are listed on our Part Details page. You can also find images and similar parts to AD8368ACPZ-REEL7 on this page.

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What category does AD8368ACPZ-REEL7 fall under?

The AD8368ACPZ-REEL7 is listed under Analog Control Variable Gain Amplifiers (VGAs).

Can I view similar or alternative parts?

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Is the AD8368ACPZ-REEL7 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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