AD8348 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8348
Manufacturer

ADI
ChipWorker Part#

CW389422562
Description

50MHz TO 1000MHz Quadrature Demodulator
Documentation

Datasheet

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AD8348 Specifications

Attribute	Attribute Value

Part Number	AD8348
Manufacturer	ADI
ChipWorker Part#	CW389422562
Documentation	Datasheet
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Product Lifecycle Status	Unknown

Product Description

Product Details
The AD8348 is a broadband quadrature demodulator with an integrated intermediate frequency (IF), variable gain amplifier (VGA), and integrated baseband amplifiers. It is suitable for use in communications receivers, performing quadrature demodulation from IF directly to baseband frequencies. The baseband amplifiers are designed to interface directly with dual-channel ADCs, such as the AD9201, AD9283, and AD9218, for digitizing and post-processing.
The IF input signal is fed into two Gilbert cell mixers through an X-AMP® VGA. The IF VGA provides 44 dB of gain control. A precision gain control circuit sets a linear-in-decibel gain characteristic for the VGA and provides temperature compensation. The LO quadrature phase splitter employs a divide-by-2 frequency divider to achieve high quadrature accuracy and amplitude balance over the entire operating frequency range.
The AD8348 is fabricated on an advanced bipolar process, operating on a single 3 or 5 volt supply, packaged in space saving 28 lead thin shrunk small outline (TSSOP) package and fully specified over the –40 to +85 C temperature range
**Samples AD8348ARU and evaluation boards AD8348-EVAL are available**
Other Modulator/Demodulator products
AD8345 250MHz – 1GHz RF/IF Modulator
AD8346 800MHz – 2.5GHz Modulator
AD8347 800MHz – 2.7GHz Demodulator
AD8349 700MHz – 2.7GHz Modulator
### Features and Benefits
50 MHz – 1000 MHz RF input range
Integrated 45 dB linear-in-dB VGA IF amplifier
Integrated baseband output amplifiers
Demodulation bandwidth 75 MHz
Quadrature phase accuracy 0.5°
Amplitude balance 0.25 dB
Third order intercept IIP3
+28 dBm (min gain)
Noise figure 11 dB (max gain)
Low LO drive –10 dBm
Single supply 2.7 V to 5.5 V with power down

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