LTC6605-10 - Dual Matched 10MHz Filter with Low Noise, Low Distortion Differential Amplifier

Features

  • Two Matched 10MHz 2nd Order Lowpass Filters
    with Differential Amplifiers
    Gain Match: ±0.35dB Max, Passband
    Phase Match: ±1.2° Max, Passband
    Single-Ended or Differential Inputs
  • < –90dBc Distortion in Passband
  • 2.1nV/√Hz Op Amp Noise Density
  • Pin-Selectable Gain (0dB/12dB/14dB)
  • Pin-Selectable Power Consumption (0.35mA/ 16.2mA/33.1mA)
  • Rail-to-Rail Output Swing
    Adjustable Output Common Mode Voltage Control
    Buffered, Low Impedance Outputs
  • 2.7V to 5.25V Supply Voltage
  • Small 22-Pin 6mm × 3mm × 0.75mm DFN Package

Typical Application

LTC6605-10 Typical Application
LTC6605-10 Typical Application

Description

The LTC6605-10 contains two independent, fully differential amplifiers configured as matched 2nd order 10MHz lowpass filters. The f–3dB of the filters is adjustable in the range of 9.7MHz to 14MHz.

The internal op amps are fully differential, feature very low noise and distortion, and are compatible with 16-bit dynamic range systems. The inputs can accept single ended or differential signals. An input pin is provided for each amplifier to set the common mode level of the differential outputs.

Internal laser-trimmed resistors and capacitors determine a precise, very well matched (in gain and phase) 10MHz 2nd order filter response. A single optional external resistor per channel can tailor the frequency response for each amplifier.

Three-state BIAS pins determine each amplifier’s power consumption, allowing a choice between shutdown, medium power or full power.

The LTC6605-10 is available in a compact 6mm × 3mm 22-pin leadless DFN package and operates over a –40°C to 85°C temperature range.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC6605CDJC-10#PBF 6x3 DFN-22 DJC C 05-08-1714 Yes
LTC6605CDJC-10#TRPBF 6x3 DFN-22 DJC C 05-08-1714 Yes
LTC6605IDJC-10#PBF 6x3 DFN-22 DJC I 05-08-1714 Yes
LTC6605IDJC-10#TRPBF 6x3 DFN-22 DJC I 05-08-1714 Yes


LTC6605-10 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC6605CDJC-10#PBF 6x3 DFN-22 C $9.73 $6.95 Yes
LTC6605CDJC-10#TRPBF 6x3 DFN-22 C $7.00 Yes
LTC6605IDJC-10#PBF 6x3 DFN-22 I $11.13 $7.95 Yes
LTC6605IDJC-10#TRPBF 6x3 DFN-22 I $8.00 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1422A-B LTC6605-10 | Dual Matched 10MHz Low Noise, Low Distortion 2nd Order LP Filter $125.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Broadband Wireless ADC Driver/Filter
  • Antialiasing Filter
  • Single-Ended to Differential Conversion
  • DAC Smoothing Filter
  • Zero-IF Direct Conversion Receivers

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LTC6605-10
LTC6605-14
LTC6605-7

Technical Support