Overview
The AD1555APRL, produced by Analog Devices Inc., is a 24-bit sigma-delta analog-to-digital converter (ADC) with a low noise programmable gain amplifier (PGA). This device is designed for low-frequency, high dynamic range measurement applications. It combines a continuous-time analog modulator with a programmable gain front end, eliminating the need for an external antialias filter. The AD1555APRL is part of the AD1555 series, which is fabricated on Analog Devices’ BiCMOS process, integrating high-performance bipolar devices and CMOS transistors.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| PGA Gain Settings | 1, 2.5, 8.5, 34, 128 | |||
| Dynamic Range | 116 dB | 120 dB | dB | |
| Input Noise | 80 nV rms @ 4 ms with Gain of 34 | nV rms | ||
| Distortion | -111 dB | -120 dB | dB | |
| Intermodulation | 122 dB | dB | ||
| Sampling Rate | 256 kSPS | kSPS | ||
| Power Dissipation | 77 mW | mW | ||
| Operating Temperature | 0°C | 85°C | °C | |
| Package Type | 28-lead PLCC |
Key Features
- Fourth-order sigma-delta modulator for high dynamic range and low noise performance.
- Programmable gain front end with settings of 1, 2.5, 8.5, 34, and 128.
- Continuous-time analog modulator input architecture, eliminating the need for an external antialias filter.
- High jitter tolerance.
- Low power dissipation with standby modes (70 μW in standby mode).
- Robust inputs with common-mode rejection of 93 dB min, 101 dB typical at a gain of 1.
- Input range of ±2.25 V.
- Compatible with the AD1556 digital filter/decimator for high-performance ADC applications.
Applications
- Seismic data acquisition systems.
- Chromatography.
- Automatic test equipment.
- Remote battery-powered data acquisition systems.
Q & A
- What is the dynamic range of the AD1555APRL?
The dynamic range of the AD1555APRL is 116 dB minimum and 120 dB typical at 1 ms.
- What are the PGA gain settings available on the AD1555APRL?
The PGA gain settings available are 1, 2.5, 8.5, 34, and 128.
- Does the AD1555APRL require an external antialias filter?
No, the AD1555APRL does not require an external antialias filter due to its continuous-time analog modulator input architecture.
- What is the typical power dissipation of the AD1555APRL?
The typical power dissipation is 77 mW.
- What are the operating temperature ranges for the AD1555APRL?
The operating temperature range is from 0°C to 85°C.
- What type of package is the AD1555APRL available in?
The AD1555APRL is available in a 28-lead PLCC package.
- What are some common applications of the AD1555APRL?
Common applications include seismic data acquisition systems, chromatography, automatic test equipment, and remote battery-powered data acquisition systems.
- How does the AD1555APRL integrate with other components?
The AD1555APRL can be used in conjunction with the AD1556 digital filter/decimator to realize a high-performance ADC.
- What is the input range of the AD1555APRL?
The input range is ±2.25 V.
- Does the AD1555APRL have standby modes?
