Overview
Features and Benefits
- ±0.6dB (Max) Ripple 4th Order Lowpass Filter with
2.5MHz Cutoff - Programmable Differential Gain via Two External Resistors
- Adjustable Output Common Mode Voltage
- Operates and Specified with 3V, 5V, ±5V Supplies
- 86dB S/N with 3V Supply and 1VRMS Output
- Low Distortion, 1VRMS, 800Ω
Load 1MHz: 95dBc 2nd, 88dBc 3rd - Fully Differential Inputs and Outputs
- Compatible with Popular Differential Amplifier Pinouts
- SO-8 and DFN-12 Packages
Product Details
The LT6600-2.5 combines a fully differential amplifier with a 4th order 2.5MHz lowpass filter approximating a Chebyshev frequency response. Most differential amplifiers require many precision external components to tail or gain and bandwidth. In contrast, with the LT6600-2.5, two external resistors program differential gain, and the filter’s 2.5MHz cutoff frequency and passband ripple are internally set. The LT6600-2.5 also provides the necessary level shifting to set its output common mode voltage to accommodate the reference voltage requirements of A/Ds.
Using a proprietary internal architecture, the LT6600-2.5 integrates an antialiasing filter and a differential amplifier/driver without compromising distortion or low noise performance. At unity gain the measured in band signal-to- noise ratio is an impressive 86dB. At higher gains the input referred noise decreases so the part can process smaller input differential signals without significantly degrading the output signal-to-noise ratio.
The LT6600-2.5 also features low voltage operation. The differential design provides outstanding performance for a 4VP-P signal level while the part operates with a single 3V supply. The LT6600-2.5 is available in SO-8 and DFN-12 packages.
For similar devices with higher cutoff frequency, refer to the LT6600-5, LT6600-10, LT6600-15 and LT6600-20 data sheets.
Applications
- High Speed ADC Antialiasing and DAC Smoothing in Networking or Cellular Basestation Applications
- High Speed Test and Measurement Equipment
- Medical Imaging
- Drop-in Replacement for Differential Amplifiers
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
-
R460 Reliability Data3/23/2018
-
DC962A - Demo Manual9/24/2009
-
High Speed Amplifiers/ADC Drivers4/29/2015
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LT6600-10
LT6600-15
LT6600-2.5
LT6600-20
LT6600-5
Sys-Parameter
Sys-Parameter Models for Keysight Genesys
Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.
Design Tool
ADIsimRF
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LT6600CDF-2.5#PBF | Material Declaration | Reliability Data | 12-Lead DFN (4mm x 4mm w/ EP) | |
| LT6600CDF-2.5#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (4mm x 4mm w/ EP) | |
| LT6600CS8-2.5#PBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| LT6600CS8-2.5#TRPBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| LT6600IDF-2.5#PBF | Material Declaration | Reliability Data | 12-Lead DFN (4mm x 4mm w/ EP) | |
| LT6600IDF-2.5#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (4mm x 4mm w/ EP) | |
| LT6600IS8-2.5#PBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| LT6600IS8-2.5#TRPBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| Wafer Fabrication Data | R460 Reliability Data |
PCN-PDN Information
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Support & Discussions
Sample & Buy
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.