LTC6605-7 - Dual Matched 7MHz Filter with Low Noise, Low Distortion Differential Amplifier
Features
- Two Matched 7MHz 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
Description
The LTC6605-7 contains two independent, fully differential amplifiers configured as matched 2nd order lowpass filters. The f–3dB of the filters is adjustable in the range of 6.5MHz to 10MHz.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) 7MHz 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 LTC6605-7 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-7#PBF | 6x3 DFN-22 | DJC | C | 05-08-1714 | Yes |
| LTC6605CDJC-7#TRPBF | 6x3 DFN-22 | DJC | C | 05-08-1714 | Yes |
| LTC6605IDJC-7#PBF | 6x3 DFN-22 | DJC | I | 05-08-1714 | Yes |
| LTC6605IDJC-7#TRPBF | 6x3 DFN-22 | DJC | I | 05-08-1714 | Yes |
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-7#PBF | 6x3 DFN-22 | C | $9.73 | $6.95 | Yes | |
| LTC6605CDJC-7#TRPBF | 6x3 DFN-22 | C | $7.00 | Yes | ||
| LTC6605IDJC-7#PBF | 6x3 DFN-22 | I | $11.13 | $7.95 | Yes | |
| LTC6605IDJC-7#TRPBF | 6x3 DFN-22 | I | $8.00 | Yes | ||
| Buy Now • Request Samples | ||||||
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-A | LTC6605-7 | Dual Matched 7MHz Low Noise, Low Distortion 2nd Order LP Filter | $125.00 | |
| Buy Now | |||
Applications
- WCDMA 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
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
