Overview
The LTC6957IDD-2#TRPBF is a member of the LTC6957 family of low phase noise, dual output AC signal buffer/driver/logic level translators produced by Analog Devices Inc. This component is specifically designed to buffer and distribute AC signals with minimal additive noise, making it particularly suitable for applications requiring high signal integrity and low phase noise.
The LTC6957IDD-2#TRPBF features LVDS (Low Voltage Differential Signaling) logic outputs, which are ideal for high-speed data transmission and clock distribution systems. It can handle input signals ranging from sine waves to logic levels (≤2V P-P) and is optimized for translating sine wave signals to logic levels with low phase noise.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| fIN Input Frequency Range | 300 | MHz | |||
| VINSE Input Signal Level Range, Single-Ended | 0.2 | 0.8 | 2 | V P-P | |
| VINDIFF Input Signal Level Range, Differential | 0.2 | 0.8 | 2 | V P-P | |
| tMIN Minimum Input Pulse Width High or Low | 0.5 | ns | |||
| VINCM Self-Bias Voltage, IN+, IN– | 1.8 | 2.06 | 2.3 | V | |
| RIN Input Resistance, Differential | 1.5 | 2 | 2.5 | kΩ | |
| CIN Input Capacitance, Differential | 0.5 | pF | |||
| V+ Operating Supply Voltage Range | 3.15 | 3.3 | 3.45 | V | |
| IS Supply Current, Pin 2 Both Outputs Enabled | SD1 = SD2 = L | 24 | 27.5 | mA | |
| IDD Supply Current, Pin 11, No Load Static | 0.001 | 0.056 | 0.07 | mA |
Key Features
- Very low phase noise, making it suitable for high-frequency applications.
- Dual output configuration with LVDS logic outputs.
- Ability to handle both sine wave and logic level input signals (≤2V P-P).
- Selectable lowpass filtering in the input stage to minimize noise and optimize signal slew rate.
- High input resistance and low input capacitance to minimize signal loading.
- Operating supply voltage range of 3.15V to 3.45V.
- Available in 12-Lead DFN (3mm x 3mm w/ EP) package.
- RoHS compliant.
Applications
The LTC6957IDD-2#TRPBF is designed for various high-speed and low-noise applications, including:
- Clock distribution and fanout in high-frequency systems.
- Translation of sine wave signals to logic levels in PLL (Phase-Locked Loop) systems.
- High-speed data transmission systems requiring LVDS signaling.
- Telecommunication and networking equipment where low phase noise is critical.
- Test and measurement equipment requiring precise clock signals.
Q & A
- What is the primary function of the LTC6957IDD-2#TRPBF?
The primary function is to buffer and distribute AC signals with minimal additive noise, translating input signals to LVDS logic levels.
- What types of input signals can the LTC6957IDD-2#TRPBF handle?
The component can handle both sine wave and logic level input signals up to 2V P-P.
- What is the input frequency range of the LTC6957IDD-2#TRPBF?
The input frequency range is up to 300 MHz.
- What is the operating supply voltage range for the LTC6957IDD-2#TRPBF?
The operating supply voltage range is from 3.15V to 3.45V.
- What package options are available for the LTC6957IDD-2#TRPBF?
The component is available in a 12-Lead DFN (3mm x 3mm w/ EP) package.
- Is the LTC6957IDD-2#TRPBF RoHS compliant?
Yes, the component is RoHS compliant.
- What are some typical applications for the LTC6957IDD-2#TRPBF?
Typical applications include clock distribution, PLL systems, high-speed data transmission, telecommunications, and test and measurement equipment.
- How does the LTC6957IDD-2#TRPBF minimize phase noise?
The component uses selectable lowpass filtering in the input stage to minimize noise and optimize signal slew rate.
- What is the input resistance and capacitance of the LTC6957IDD-2#TRPBF?
The input resistance is typically 2 kΩ, and the input capacitance is 0.5 pF.
- How much current does the LTC6957IDD-2#TRPBF consume when both outputs are enabled?
The supply current is typically 27.5 mA when both outputs are enabled.
