Overview
The ADS5294IPFPT is an 8-channel, 14-bit, 80-MSPS analog-to-digital converter (ADC) produced by Texas Instruments. This device utilizes CMOS process technology and innovative circuit techniques to achieve low power consumption, high signal-to-noise ratio (SNR), low spurious free dynamic range (SFDR), and consistent overload recovery. These characteristics make it ideal for designing high-performance systems.
The ADS5294IPFPT is available in a 12-mm × 12-mm 80-pin HTQFP (PFP) package and is specified over an operating temperature range of –40°C to 85°C. It is completely pin-to-pin and register compatible with the ADS5292, ensuring ease of integration and upgrade in existing designs.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 14-bit (programmable to 12-bit) |
| Maximum Sample Rate | 80 MSPS |
| Signal-to-Noise Ratio (SNR) | 75.5 dBFS at 5 MHz / 80 MSPS, 78.2 dBFS with decimation filter enabled |
| Spurious Free Dynamic Range (SFDR) | 84 dBc at 5 MHz / 80 MSPS |
| Power Consumption | 58 mW/CH at 50 MSPS, 77 mW/CH at 80 MSPS (2-LVDS wire per channel) |
| Operating Temperature Range | –40°C to 85°C |
| Package | 80-pin HTQFP (PFP), 12-mm × 12-mm |
Key Features
- High Signal-to-Noise Ratio: Achieves 75.5 dBFS SNR at 5 MHz / 80 MSPS and 78.2 dBFS with decimation filter enabled.
- Low Power Consumption: Consumes 58 mW/CH at 50 MSPS and 77 mW/CH at 80 MSPS (2-LVDS wire per channel).
- Digital Processing Block: Includes programmable FIR decimation filters, IIR high-pass filters, and programmable digital gain (0 dB to 12 dB).
- Flexible Serialized LVDS Outputs: Outputs data over one or two wires of LVDS output lines per channel, depending on the ADC sampling rate.
- Programmable Mapping: Allows flexible mapping between ADC input channels and LVDS output pins, easing board design and reducing PCB complexity.
- Averaging Mode: Supports 2-channel or 4-channel averaging to improve SNR.
- Internal and External References: Supports both internal and external references, with internal reference mode achieving the best performance.
- Low-Frequency Noise Suppression: Includes features to suppress low-frequency noise.
- Recovery from Overload: Recovers from 6-dB overload within one clock cycle.
Applications
The ADS5294IPFPT is suitable for various high-performance applications, including:
- Medical Imaging: High-resolution imaging systems benefit from its high SNR and low power consumption.
- Industrial Automation: Used in data acquisition systems requiring high accuracy and reliability.
- Aerospace and Defense: Ideal for systems needing low power consumption and high performance in harsh environments.
- Test and Measurement Equipment: Utilized in high-speed data acquisition systems for precise measurements.
Q & A
- What is the maximum sample rate of the ADS5294IPFPT?
The maximum sample rate is 80 MSPS.
- What is the resolution of the ADS5294IPFPT?
The resolution is 14-bit, but it can be programmed to 12-bit.
- What is the power consumption of the ADS5294IPFPT at 80 MSPS?
The power consumption is 77 mW per channel when using 2-LVDS wires per channel.
- Does the ADS5294IPFPT support internal and external references?
Yes, it supports both internal and external references.
- What is the operating temperature range of the ADS5294IPFPT?
The operating temperature range is –40°C to 85°C.
- What type of package does the ADS5294IPFPT come in?
The device is available in an 80-pin HTQFP (PFP) package, measuring 12-mm × 12-mm.
- Does the ADS5294IPFPT have built-in digital filters?
Yes, it includes programmable FIR decimation filters and IIR high-pass filters.
- Can the ADS5294IPFPT recover from overload quickly?
Yes, it can recover from a 6-dB overload within one clock cycle.
- Is the ADS5294IPFPT compatible with other Texas Instruments ADCs?
Yes, it is completely pin-to-pin and register compatible with the ADS5292.
- What is the benefit of the programmable mapping feature in the ADS5294IPFPT?
The programmable mapping feature allows flexible mapping between ADC input channels and LVDS output pins, reducing the complexity of LVDS-output routing and potentially resulting in cheaper system boards.
