Overview
The ADS6445MRGCTEP is a high-performance, quad-channel analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS644X family and is designed for applications requiring high-speed and high-resolution data conversion. It features a 14-bit resolution with a maximum sample rate of 125 MSPS, making it suitable for demanding environments such as defense, aerospace, medical imaging, and test equipment.
The ADC is packaged in a compact 64-pin QFN package, measuring 9 mm × 9 mm, which enhances system integration density. It includes serialized LVDS outputs with programmable internal termination options, improving signal integrity and reducing the number of interface lines.
Key Specifications
| Parameter | ADS6445 | ADS6444 |
|---|---|---|
| Resolution | 14 bits | 14 bits |
| Maximum Sample Rate | 125 MSPS | 105 MSPS |
| Analog Supply Voltage (AVDD) | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| LVDS Buffer Supply Voltage (LVDD) | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Differential Input Voltage Range | 2 Vpp | 2 Vpp |
| Input Common-Mode Voltage | 1.5 ± 0.1 V | 1.5 ± 0.1 V |
| Total Supply Current | 502 mA | 410 mA |
| Power Consumption (per channel) | 420 mW | 340 mW |
| Operating Junction Temperature | –55°C to 125°C | –55°C to 125°C |
Key Features
- Serialized LVDS Outputs: Reduces the number of interface lines, enhancing signal integrity with programmable internal termination options.
- High-Speed Sampling: Supports up to 125 MSPS for the ADS6445 and 105 MSPS for the ADS6444.
- Gain Options: Includes 3.5 dB coarse gain and up to 6 dB programmable fine gain for SFDR/SNR trade-off.
- Internal Reference: With the option to use an external reference mode.
- Compact Packaging: 64-pin QFN package (9 mm × 9 mm) for high system integration density.
- Multi-Protocol Clock Support: Supports sine, LVCMOS, LVPECL, and LVDS clock inputs.
- Low Power Consumption: Efficient power management with total power consumption of 1.65 W (ADS6445) and 1.35 W (ADS6444) at maximum sampling rates.
Applications
- Base-Station IF Receivers: Suitable for high-speed data conversion in wireless communication systems.
- Diversity Receivers: Used in systems requiring simultaneous sampling and holding of multiple channels.
- Medical Imaging: Ideal for high-resolution imaging applications such as MRI and CT scanners.
- Test Equipment: Utilized in various test and measurement instruments requiring high-speed and high-accuracy data conversion.
- Defense and Aerospace: Supports critical applications in defense and aerospace due to its robust performance and wide operating temperature range.
Q & A
- What is the maximum sample rate of the ADS6445?
The maximum sample rate of the ADS6445 is 125 MSPS.
- What is the resolution of the ADS6445 and ADS6444?
Both the ADS6445 and ADS6444 have a 14-bit resolution.
- What types of clock inputs are supported by the ADS644X family?
The ADS644X family supports sine, LVCMOS, LVPECL, and LVDS clock inputs.
- What is the operating junction temperature range of the ADS6445 and ADS6444?
The operating junction temperature range is –55°C to 125°C for both models.
- Does the ADS644X family support external reference mode?
- What is the power consumption of the ADS6445 and ADS6444 at maximum sampling rates?
The total power consumption is 1.65 W for the ADS6445 and 1.35 W for the ADS6444 at maximum sampling rates.
- What is the package type and size of the ADS6445MRGCTEP?
The package type is a 64-pin QFN, measuring 9 mm × 9 mm.
- What are the key applications of the ADS644X family?
The key applications include base-station IF receivers, diversity receivers, medical imaging, test equipment, and defense and aerospace applications.
- Does the ADS644X family have programmable gain options?
- What is the significance of the serialized LVDS outputs in the ADS644X family?
The serialized LVDS outputs reduce the number of interface lines, enhance signal integrity, and include programmable internal termination options.
