Overview
The LTC6957HMS-1#PBF is a low phase noise, dual output AC signal buffer/driver/logic level translator produced by Analog Devices Inc. This component is part of the LTC6957 family, which includes four variants differing in their output logic signal types. The LTC6957-1 specifically provides LVPECL (Low Voltage Positive Emitter-Coupled Logic) logic outputs. It is designed to buffer and distribute any logic signal with minimal additive noise, particularly excelling in translating sine wave signals to logic levels.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Operating Supply Voltage (V+) | 3.15 | 3.3 | 3.45 | V | |
| Input Frequency Range (fIN) | 300 | MHz | |||
| Input Signal Level Range, Single-Ended (VINSE) | 0.2 | 0.8 | 2 | VP-P | |
| Minimum Input Pulse Width High or Low (tMIN) | 0.5 | ns | |||
| Propagation Delay | 4 | ns | |||
| Supply Current (IS), Both Outputs Enabled | SD1 = SD2 = L | 24 | 27.5 | mA | |
| Package Type | 12-Lead MSOP |
Key Features
- Very low phase noise, making it ideal for applications requiring high signal integrity.
- Dual output buffer/driver/logic level translator capable of handling sine wave or logic level inputs (≤2V P-P).
- Selectable lowpass filtering in the early amplifier stages to minimize noise and increase slew rate.
- LVPECL logic outputs for the LTC6957-1 variant.
- Low propagation delay of 4 ns.
- Operating supply voltage range of 3.15V to 3.45V.
- Surface mount package (12-Lead MSOP).
Applications
- Low phase noise buffer/driver for high-frequency signal distribution.
- Optimized conversion of sine wave signals to logic levels, particularly useful in systems requiring precise timing and low jitter.
- Use in OCXO (Oven-Controlled Crystal Oscillator) systems, PLL (Phase-Locked Loop) chips, and system sampling clocks.
- Applications in telecommunications, data communication systems, and high-speed digital systems where low phase noise is critical.
Q & A
- What is the primary function of the LTC6957HMS-1#PBF?
The primary function is to act as a low phase noise, dual output AC signal buffer/driver/logic level translator.
- What type of logic outputs does the LTC6957-1 provide?
The LTC6957-1 provides LVPECL (Low Voltage Positive Emitter-Coupled Logic) logic outputs.
- What is the operating supply voltage range for the LTC6957HMS-1#PBF?
The operating supply voltage range is 3.15V to 3.45V.
- What is the propagation delay of the LTC6957HMS-1#PBF?
The propagation delay is 4 ns.
- What package type is the LTC6957HMS-1#PBF available in?
The component is available in a 12-Lead MSOP package.
- What is the input frequency range for the LTC6957HMS-1#PBF?
The input frequency range is up to 300 MHz.
- How does the LTC6957HMS-1#PBF minimize noise?
The component uses selectable lowpass filtering in the early amplifier stages to minimize noise.
- What are some typical applications of the LTC6957HMS-1#PBF?
Typical applications include low phase noise buffer/driver for high-frequency signal distribution, OCXO systems, PLL chips, and system sampling clocks.
- What is the minimum input pulse width for the LTC6957HMS-1#PBF?
The minimum input pulse width is 0.5 ns.
- How much supply current does the LTC6957HMS-1#PBF consume when both outputs are enabled?
The supply current is approximately 24 mA to 27.5 mA when both outputs are enabled.
