LTC6601-2 - Low Power, Low Distortion, Low Power, Low Distortion, 5MHz to 27MHz, Pin Configurable Filter/ADC Driver


  • Pin Configurable Gain and Filter Response Up to 27MHz
  • Low Power: 16mA at 3V
  • Low Distortion (2VP-P)
       1MHz: –96dBc 2nd, –112dBc 3rd
       10MHz: –65dBc 2nd, –78dBc 3rd
  • Few External Components Required
  • Resistors Trimmed to 0.5% Accuracy Typical
  • Capacitors Trimmed to 0.5% Accuracy Typical
  • Adjustable Output Common Mode Voltage
  • Rail-to-Rail Output Swing
  • Power Configurability and Low Power Shutdown
  • Tiny 0.75mm 20-Lead (4mm × 4mm) QFN Package

Typical Application

LTC6601-2 Typical Application


The LTC6601-2 is a low power, low distortion, very easy-to-use fully differential 2nd order active broadband RC filter and driver. On-chip resistors, capacitors, and amplifier bandwidth are trimmed to provide consistent and repeatable filter characteristics.

The filter characteristics are pin-strap configurable. Cutoff frequencies range from 5MHz to 27MHz. Gain is pin-strap programmable between –17dB and +17dB.

A three-state BIAS pin is provided to adjust amplifier power consumption. Select between low power (50% power reduction), high performance and standby modes with the BIAS pin.

The LTC6601 family comes in two options which trade off distortion and noise. The LTC6601-2 offers the lowest distortion at high frequencies. The LTC6601-1 is configured for lowest noise. Both are available in pin-compatible packages.

The LTC6601-2 is available in a compact 4mm × 4mm 20-pin leadless QFN package.


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
LTC6601CUF-2#PBF 4x4 QFN-20 UF C 05-08-1710 Yes
LTC6601CUF-2#TRPBF 4x4 QFN-20 UF C 05-08-1710 Yes
LTC6601IUF-2#PBF 4x4 QFN-20 UF I 05-08-1710 Yes
LTC6601IUF-2#TRPBF 4x4 QFN-20 UF I 05-08-1710 Yes

LTC6601-2 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
LTC6601CUF-2#PBF 4x4 QFN-20 C $5.53 $3.95 Yes
LTC6601CUF-2#TRPBF 4x4 QFN-20 C $4.00 Yes
LTC6601IUF-2#PBF 4x4 QFN-20 I $6.37 $4.55 Yes
LTC6601IUF-2#TRPBF 4x4 QFN-20 I $4.60 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
DC1251A-B LTC6601-2 | Low Power, Low Distortion Configurable Broadband Filter Demo Board $125.00
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Click here to view our complete list of demo boards


  • Differential A/D Converter Driver
  • Antialiasing/Reconstruction Filter
  • Single-Ended to Differential Conversion/Amplification
  • Low Voltage, Low Noise, Differential Signal Processing
  • Common Mode Voltage Translation
  • Portable Instrumentation

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