Dual/Quad Analog to Digital Converters (ADC) - Texas Instruments

Texas Instruments introduced the ADS6000, a Dual and Quad ADCs (analog-to-digital converters) family. The new ADCs features high speed, high performance, low power and tiny packages (9 x 9 mm), to meet the requirements of advanced image processing, communications, radar, video, instrumentation/measurement and medical applications.

The ADS6000 family consists of dual and quad, 12- and 14-bit ADCs available in speeds of 80, 105 and 125 MSPS. Each device in the family delivers exceptional spurious-free dynamic range (SFDR), high signal-to-noise ratio (SNR), high IF capability and low power per channel. By incorporating single- or dual-stream serialized LVDS outputs, the devices reduce board space by 60 percent compared to CMOS output solutions.

Art George, Texas Instruments, said:

Today’s high-speed applications are demanding greater system density and performance while still providing low power consumption. Texas Instruments’ ADS6000 family delivers on these demands with pin-compatible, multi-channel ADCs that combine exceptional speed, performance, size and power…

The ADS6000 family provides programmable options such as coarse and fine gain controls to trade a small amount of SNR for a significant increase in SFDR at high IFs, enabling the customer to tailor the performance to the specific application requirements. Designers are also able to optimize the LVDS output configurations by adjusting the driver currents and internal termination resistors to reduce power consumption, improve signal integrity and ease data capture.

The ADS6425 (quad ADC, 12-bit, 125-MSPS ) provides high performance at 70.3 dB SNR and 83dB SFDR at 50MHz IF in the nominal state, with the ability to reach 86 dB SFDR through gain settings. The ADS6445 (14-bit, 125-MSPS) provides an upgrade path for customers requiring higher resolution. The ADS6425 and ADS6445 offer many benefits including:

• High sample rate and resolution for increased bandwidth and advanced medical imaging capability
• Enhanced resolution for object tracking and discrimination in radar systems
• Higher performance, smaller form factor and extended battery life for portable test equipment
• Increased density and sample rate for smaller form factors in high-end video equipment
• Improved sensitivity and reduced bill-of-materials for diversity receivers in wireless infrastructure

TI also offers variety of parts to complete the signal chain. High-speed, low-noise amplifiers, such as the THS9001 and THS4509, allow the ADS6425 to operate to its full input bandwidth. The CDCM7005 low-skew clock synchronizer provides low-jitter clocking to maximize SNR performance. For parallel transmission paths, TI can provide multi-channel digital-to-analog converters and digital up/down converters such as the DAC5672 and GC5016.

Source: Dual and Quad ADC - Texas Instruments