AD8370

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750 MHz Digitally Controlled Variable Gain Amplifier

Data Sheet (Rev. B) Product Selection Table
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Overview

  • Low Frequency to 750MHz (-3dB bandwidth)
  • Output 1dB Compression Point +15.8dBm (70MHz)
  • Noise Figure 7dB
  • Single Supply 3V to 5V with Power Down
  • Fully Differential input and outputs
  • Three Wire Serial Digital Interface
  • Two Pin Selectable Gain Ranges,
    Low Range –11dB to +17dB
    High Range +6dB to +34dB
  • Output Third Order Interface
    +35dBm (70MHz)

The AD8370 is a high performance, digitally controlled variable gain amplifier, designed to be used at IF frequencies within communication infrastructure equipment.

The part provides two gain control ranges that are controlled through a three wire digital interface, and allow the user to attain fine gain control for maximum receiver sensitivity.

The AD8370 has been fully specified for operation at common wireless IF frequencies 70 / 140 / 190 / 240 / 380MHz. The high output compression and fine gain control adjustability makes the AD8370 an ideal choice for to be used within digital receiver AGC circuits for GSM / CDMA2000 / W-CDMA cellular base stations.

The AD8370 is fabricated on an advanced silicon bipolar process, operating on a single 3 or 5 volt supply, packaged in space saving 16-lead thin shrunk small outline (TSSOP) package and fully specified over the –40 to +85 C temperature range.

Availability

Samples AD8370ARU and an evaluation boards AD8370-EVAL are available.

Other Wireless VGA products:

AD8367 - 45dB, 500MHz Single Ended, Analog Controlled VGA

AD8369 – 45dB, 600MHz Differential, 3dB Step Digitally Controlled VGA
AD8370
750 MHz Digitally Controlled Variable Gain Amplifier
AD8370-fbl AD8370-pc
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Documentation

Data Sheet 1

User Guide 1

Application Note 1

Technical Articles 1

Evaluation Design File 1

Frequently Asked Question 1

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Software Resources

Evaluation Software 2

AD8370 Evaluation Board Software

 

AD8370 Digital VGA Evaluation Board Controller Software

 

Tools & Simulations

ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

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ADIsimPLL™

ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.

Open Tool

Sys-Parameter Models for Keysight Genesys

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.

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S-Parameter 1

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
EVAL-AD8370

Evaluating the AD8370, 750MHz Digitally Controlled Variable Gain Amplifier

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Features and Benefits

Product Details

The AD8370-ACE-EVALZ evaluation board allows the manual control of the AD8370 through the USB port on a Microsoft® Windows® PC via a SDP-S interface board.

Additional information on the AD8370 is provided in the AD8370 data sheet. Consult the data sheet in conjunction with this user guide when using the AD8370-ACE-EVALZ evaluation board.
EVAL-AD8370
Evaluating the AD8370, 750MHz Digitally Controlled Variable Gain Amplifier
AD8370-EVALZ Board Photo Angle View AD8370-EVALZ Board Photo Top View AD8370-EVALZ Board Photo Bottom View

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