AD8326

Features: Supports DOCSIS Standard for Reverse PathTransmissionGain Programmable in 0.75 dB Steps over a 53.5 dB Low Distortion at 65 dBmV Output62 dBc SFDR at 21 MHz58 dBc SFDR at 65 MHz1 dB Compression of 25 dBm at 10 MHzOutput Noise Level45 dBmV in 160 kHzMaintains 75 Output Impedance Power-Up...

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AD8326 Picture
SeekIC No. : 004272114 Detail

AD8326: Features: Supports DOCSIS Standard for Reverse PathTransmissionGain Programmable in 0.75 dB Steps over a 53.5 dB Low Distortion at 65 dBmV Output62 dBc SFDR at 21 MHz58 dBc SFDR at 65 MHz1 dB Compre...

floor Price/Ceiling Price

Part Number:
AD8326
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/25

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Product Details

Description



Features:

Supports DOCSIS Standard for Reverse Path
Transmission
Gain Programmable in 0.75 dB Steps over a 53.5 dB
Low Distortion at 65 dBmV Output
62 dBc SFDR at 21 MHz
58 dBc SFDR at 65 MHz
1 dB Compression of 25 dBm at 10 MHz
Output Noise Level
45 dBmV in 160 kHz
Maintains 75 Output Impedance

Power-Up and Power-Down Condition
Upper Bandwidth: 100 MHz (Full Gain Range)
Single or Dual Supply Operation
APPLICATIONS
Gain-Programmable Line Driver
CATV Telephony Modems
CATV Terminal Devices
General-Purpose Digitally Controlled Variable Gain Block






Pinout

AD8326 Diagram




Specifications

Supply Voltage VCC
Pins 5, 9, 10, 19, 20, 23, 27 .For ARP, Max VCC= VEE+ 13 V;
. . . . . . . . . . . . . . . . . . . . . . .For ARE, Max VCC= VEE+ 11 V
Input VoltagesPins

25, 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5 V
Pins 1, 2, 3, 6, 7 . . . . . . . . . . . . . . . . . . . . . 0.8 V to +5.5 V
Internal Power Dissipation
TSSOP EPAD . . . . . . . . . . . . . . . . . . . . . . . ...... . . . . . . 1.5 W
PSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .2.0 W
Operating Temperature Range . . . . . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . . 65°C to +150°C
Lead Temperature, Soldering 60 seconds . .. . . . . . . . 300°C



Gain Control Digital
-3 dB BW (MHz) 100MHz
Gain Low End (dB) -26dB
Gain High End (dB) +27.5dB
Number of Channels 1
Spectral Noise (nV/rtHz) 100nV/rtHz
Supply Voltage (V) ±5V
Supply Current 157mA
Gain Accuracy (dB) ±1dB





Description

The AD8326 is a high-output power, digitally controlled, vari- able gain amplifier optimized for coaxial line driving applications such as data and telephony cable modems that are designed to the MCNS-DOCSIS upstream standard. An 8-bit serial word determines the desired output gain over a 53.5 dB range result- ing in gain changes of 0.75 dB/LSB. The AD8326 is offered in two models, each optimized to support the desired output power and resulting performance.

The AD8326 comprises a digitally controlled variable attenuator of 0 dB to 54 dB, that is preceded by a low noise, fixed-gain buffer and is followed by a low distortion high-power amplifier. The AD8326 accepts a differential or single-ended input signal. The output is designed to drive a 75 Ωload, such as coaxial cable, although the AD8326 is capable of driving other loads.

When driving 67 dBm into a 75 Ω load, the AD8326ARP provides a worst harmonic of only 59 dBc at 21 MHz and 57 dBc at 42 MHz. W hen driving 65 dBmV into a 75 Ω load, the AD8326ARE provides a worst harmonic of only 62 dBc at 21 MHz and 60 dBc at 42 MHz.






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