Overview
The LTC6957IDD-2#PBF 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 specific model, LTC6957IDD-2, features LVDS (Low Voltage Differential Signaling) logic outputs. The device is designed to buffer and distribute any logic signal with minimal additive noise, particularly excelling in translating sine wave signals to logic levels. It includes early amplifier stages with selectable lowpass filtering to minimize noise and enhance signal slew rate, making it ideal for applications requiring low phase noise and high signal integrity.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Frequency Range (fIN) | 300 | MHz | |||
| Input Signal Level Range, Single-Ended (VINSE) | 0.2 | 0.8 | 2 | Vp-p | |
| Input Signal Level Range, Differential (VINDIFF) | 0.2 | 0.8 | 2 | Vp-p | |
| Minimum Input Pulse Width High or Low (tMIN) | 0.5 | ns | |||
| Self-Bias Voltage, IN+, IN– (VINCM) | 1.8 | 2.06 | 2.3 | V | |
| Input Resistance, Differential (RIN) | 1.5 | 2 | 2.5 | kΩ | |
| Input Capacitance, Differential (CIN) | 0.5 | pF | |||
| Operating Supply Voltage Range (V+ or VDD) | 3.15 | 3.3 | 3.45 | V | |
| Supply Current (IS), Both Outputs Enabled | SD1 = SD2 = L | 24 | 27.5 | mA | |
| Output Current (LVDS) | ±10 | mA | |||
| Specified Temperature Range | –40 | 85 | °C |
Key Features
- Low Phase Noise: The LTC6957IDD-2#PBF is designed to deliver very low phase noise, making it suitable for high-frequency applications requiring minimal signal degradation.
- Dual Output Buffer/Driver/Logic Converter: The device can buffer and distribute any logic signal with minimal additive noise and can translate sine wave signals to logic levels efficiently.
- Selectable Lowpass Filtering: Early amplifier stages include selectable lowpass filtering to minimize noise and enhance signal slew rate, particularly beneficial for slow slewing input signals.
- LVDS Logic Outputs: This model features LVDS logic outputs, providing high-speed differential signaling.
- Wide Operating Supply Voltage Range: The device operates within a supply voltage range of 3.15V to 3.45V.
- Compact Packaging: Available in a 12-Lead DFN (3mm x 3mm w/ EP) package, making it suitable for space-constrained designs.
Applications
- High-Frequency Signal Distribution: Ideal for distributing high-frequency signals in various electronic systems with minimal phase noise.
- Telecommunication Systems: Used in telecommunication equipment where low phase noise and high signal integrity are critical.
- Test and Measurement Equipment: Suitable for use in test and measurement instruments requiring precise signal translation and buffering.
- Industrial Control Systems: Can be used in industrial control systems that require reliable and low-noise signal processing.
Q & A
- What is the primary function of the LTC6957IDD-2#PBF?
The primary function is to buffer and distribute AC signals while translating them to LVDS logic levels with minimal phase noise.
- What types of input signals can the LTC6957IDD-2#PBF handle?
The device can handle sine wave signals or any logic level signals up to 2Vp-p.
- What is the input frequency range of the LTC6957IDD-2#PBF?
The input frequency range is up to 300 MHz.
- What is the operating supply voltage range for the LTC6957IDD-2#PBF?
The operating supply voltage range is from 3.15V to 3.45V.
- What is the significance of the selectable lowpass filtering in the LTC6957IDD-2#PBF?
The selectable lowpass filtering helps minimize noise and enhance signal slew rate, especially beneficial for slow slewing input signals.
- What type of logic outputs does the LTC6957IDD-2#PBF provide?
The device provides LVDS (Low Voltage Differential Signaling) logic outputs.
- What is the typical supply current for the LTC6957IDD-2#PBF when both outputs are enabled?
The typical supply current is around 27.5 mA when both outputs are enabled.
- What is the specified temperature range for the LTC6957IDD-2#PBF?
The specified temperature range is from –40°C to 85°C.
- In what package is the LTC6957IDD-2#PBF available?
The device is available in a 12-Lead DFN (3mm x 3mm w/ EP) package.
- What are some common applications of the LTC6957IDD-2#PBF?
Common applications include high-frequency signal distribution, telecommunication systems, test and measurement equipment, and industrial control systems.
