Overview
The AD1556ASRL is a digital filter and decimator designed by Analog Devices Inc. to work in conjunction with the AD1555, a 24-bit sigma-delta modulator. This combination forms a high-performance Analog-to-Digital Converter (ADC) system. The AD1556ASRL is optimized for low-frequency, high dynamic range measurement applications. It features a continuous-time analog modulator input architecture, eliminating the need for an external antialias filter. The device is known for its low operating power and standby modes, making it suitable for a variety of precision measurement systems.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -55 | 85 | °C | |
| Power Dissipation (Typical) | 6.2 mW | mW | ||
| Standby Power Dissipation | 70 µW | µW | ||
| Reference Input Voltage Range | 2.990 | 3.0 | 3.010 | V |
| Reference Input Current | 130 | 130 | µA | |
| Digital Supply Voltage (VL) | 3.3 V or 5 V | V | ||
| Output Word Rates | 250 SPS | 16 kSPS | SPS | |
| Common-Mode Rejection (DC to 1 kHz) | 93 dB | 101 dB | dB |
Key Features
- Programmable Gain Amplifier (PGA): The AD1555, when used with the AD1556ASRL, includes a programmable gain front end that simplifies system design, extends the dynamic range, and reduces system board area.
- Low Power Consumption: The device operates with low power dissipation, typically 6.2 mW, and as low as 70 µW in standby mode.
- High Performance ADC System: Combining the AD1555 and AD1556ASRL creates a high-performance ADC system suitable for high dynamic range measurement applications.
- No External Antialias Filter Needed: The continuous-time analog modulator input architecture eliminates the need for an external antialias filter.
- Flexible Output Word Rates: The device supports output word rates from 250 SPS to 16 kSPS.
Applications
- Seismic Data Acquisition Systems: Ideal for seismic measurements due to its high dynamic range and low noise characteristics.
- Chromatography: Used in chromatography systems for precise measurement and analysis.
- Automatic Test Equipment (ATE): Suitable for ATE applications requiring high precision and reliability.
Q & A
- What is the AD1556ASRL used for? The AD1556ASRL is a digital filter and decimator used in conjunction with the AD1555 to form a high-performance ADC system.
- What is the operating temperature range of the AD1556ASRL? The operating temperature range is from -55°C to 85°C.
- What are the typical power dissipation and standby power dissipation of the AD1556ASRL? The typical power dissipation is 6.2 mW, and the standby power dissipation is 70 µW.
- What is the reference input voltage range for the AD1556ASRL? The reference input voltage range is from 2.990 V to 3.010 V.
- Does the AD1556ASRL require an external antialias filter? No, the continuous-time analog modulator input architecture eliminates the need for an external antialias filter.
- What are the supported output word rates for the AD1556ASRL? The device supports output word rates from 250 SPS to 16 kSPS.
- What are some common applications of the AD1556ASRL? Common applications include seismic data acquisition systems, chromatography, and automatic test equipment (ATE).
- What is the common-mode rejection ratio of the AD1556ASRL? The common-mode rejection ratio is typically 101 dB from DC to 1 kHz.
- What is the digital supply voltage for the AD1556ASRL? The digital supply voltage (VL) is 3.3 V or 5 V.
- Is the AD1556ASRL available in different packages? Yes, it is available in various packages, including the Plastic Quad Flatpack (S-44A).
