LT6600 combines a fully differential amplifier and a low-pass filter. Each model represents different cut-off frequencies. It can be used as a direct substitute for the differential amplifier. The cut-off frequencies are 2.5MHz, 5MHz, 10MHz, 15MHz and 20MHz, which can be selected with simple operation and stable cut-off frequencies.
LT6600 module shipping list
Module + PDF schematic + after-sale technical support + electrostatic bag packaging + shockproof foam
(1) The module interface of our shop is clear and the performance is stable. Please perform functional verification under the corresponding experimental conditions in conjunction with the schematic diagram provided by our shop.
(2) The basic parameters of this module are in the details page, providing PDF information of the module information; engineering documents are not provided, please be clear to the buyer, if you have operational problems, you can consult customer service.
(3) Buyers, before using the module, please read the details page of this module to understand the power supply and use restrictions, to avoid damage to the module due to improper operation.
(4) Our modules are guaranteed to provide real module parameters, functions and pictures, and all modules will be shipped after detection.
Module model: LT6600
Module type: switched capacitor filter
Power supply voltage: DC-5V
Module current: 50mA (Max)
Filter type: low pass
Filter order: fourth order
Low-pass cut-off frequency: optional; 2.5MHz, 5MHz, 10MHz, 15MHz, 20MHz
Input signal form: single-ended
Input channel: 1 channel; can be cascaded
Input signal voltage range: 1.3Vpp(Max)
Input frequency range: 2KHz-30MHz
Module gain range: yes; 2.5MHz magnification is 3.1 times; 5MHz magnification is 2 times; 10MHz magnification is 1.3 times; 15MHz magnification is 1.6 times; 20MHz magnification is 1.3 times
Input and output signal characteristics: coupled input and output; output with DC component, can be directly measured with an oscilloscope. Because it is a switched capacitor filter, the output signal is sawtooth.
Module input and output interface: SMA; 24-hour salt spray anti-oxidation
Module protection: none; no reverse connection protection, unlimited current protection
Module features: multiple; switched capacitor filter, multi-function filter, universal filter
Module application: multiple; power system, sensor signal processing, transmitter and receiver, signal generator
Module specifications: 50*28*7mm; length*width*height-PCB size
Module weight: 9.1g
Module working temperature: 0-75℃; civil grade
The LT6600 is a fourth-order selectable low-pass filter that approximates the Chebyshev frequency response. The LT6600 does not require multiple precise external components to trim the gain and bandwidth. Only two external resistors are needed to set the differential gain, and the filter's cutoff frequency and passband ripple are set internally. The LT6600 also provides the necessary level shift to set its output common-mode voltage to suit the A/D reference voltage requirements.
The LT6600 uses a proprietary internal architecture to integrate anti-aliasing filters with differential amplifiers/drivers without sacrificing distortion and noise performance. Under unity gain conditions, the measured in-band signal-to-noise ratio reaches a remarkable 82dB. Under the condition of higher gain, the noise caused by the input decreases, so the device can handle smaller input differential signals without significantly reducing the output signal-to-noise ratio. Generally used in power system, sensor signal processing, transmitter and receiver, signal generator processing, etc.
Precautions for using the module
(1) The power supply voltage of the module cannot exceed +5.5V.
(2) Since the module is a high-precision device, in order to avoid unnecessary interference, it is recommended to use a linear power supply.
(3) It is recommended to use SMA to BNC line input and output signals for output signals. Use an oscilloscope to observe the effect. Poor contact or poor quality wires may cause signal attenuation or excessive noise.
(4) The filter measurement generally adopts the oscilloscope point frequency method. If possible, it can be tested with a frequency sweeper or a vector network analyzer.
Frequently asked questions
Q: The output waveform of the module is jagged, and the noise is relatively heavy. Is the effect correct?
A: The LT6600 is a switched capacitor filter, and the sawtooth of the switching frequency will appear on the waveform. Generally, it looks obvious when the clock frequency is relatively low. It is recommended to use a good wire, or add an analog low-pass filter to the output to make the waveform Much better, the modules are shipped after detection, and can be tested directly after power-on.
Q: Can the modules be cascaded?
A: The modules can be directly cascaded, and the filtering effect is directly superimposed.
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