Overview
The ADS5263IRGCR, produced by Texas Instruments, is a quad-channel, 16-bit, 100-MSPS analog-to-digital converter (ADC) designed to operate at low power while delivering high signal-to-noise ratio (SNR) performance. Utilizing CMOS process technology and innovative circuit techniques, this device is suitable for applications requiring high-resolution and low-power modes. It features a low-noise 16-bit front-end stage followed by a 14-bit ADC, enabling it to achieve an SNR of 85 dBFS up to 10 MHz and better than 80 dBFS up to 30 MHz.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VQFN (RGC) with 64 pins |
| Operating Temperature Range | -40°C to 85°C |
| Maximum Sample Rate | 100 MSPS |
| Resolution | Quad-Channel, 16-Bit (High-SNR Mode) / Quad-Channel, 14-Bit (Low-Power Mode) |
| Full-Scale Input | 4 Vpp (16-Bit Mode) / 2 Vpp (14-Bit Mode) |
| SNR | 85 dBFS at fin = 3 MHz, 100 MSPS (16-Bit Mode) / 74 dBFS at fin = 10 MHz (14-Bit Mode) |
| Total Power | 1.4 W at 100 MSPS (16-Bit Mode) / 785 mW at 100 MSPS (14-Bit Mode) |
| Analog Supply | 3.3 V |
| Digital Supply | 1.8 V |
Key Features
- Programmable device resolution: Switchable between 16-bit high-SNR mode and 14-bit low-power mode.
- Integrated clamp for interfacing to CCD sensors.
- Low-frequency noise suppression.
- Digital processing block with programmable FIR decimation filters and digital gain (up to 12 dB).
- Programmable mapping between ADC input channels and LVDS output pins to ease board design.
- Averaging mode for two or four channels to improve SNR.
- Serialized LVDS outputs and internal/external references.
- Non-magnetic package option for MRI systems.
- Recovery from 6-dB overload within one clock cycle.
Applications
The ADS5263IRGCR is suitable for various high-performance applications, including:
- Medical imaging systems, particularly MRI systems due to its non-magnetic package option.
- High-speed data acquisition systems requiring low noise and high SNR.
- Industrial and scientific instruments where dynamic range and resolution are critical.
- Narrow-band applications benefiting from programmable decimation filters.
Q & A
- What is the maximum sample rate of the ADS5263IRGCR? The maximum sample rate is 100 MSPS.
- What are the resolution modes available for the ADS5263IRGCR? It operates in both 16-bit high-SNR mode and 14-bit low-power mode.
- What is the full-scale input range for each resolution mode? The full-scale input is 4 Vpp for the 16-bit mode and 2 Vpp for the 14-bit mode.
- How much power does the ADS5263IRGCR consume in each mode? It consumes 1.4 W at 100 MSPS in 16-bit mode and 785 mW at 100 MSPS in 14-bit mode.
- What digital functions are integrated into the ADS5263IRGCR? It includes a digital processing block with programmable FIR decimation filters, digital gain, and averaging modes.
- Can the ADS5263IRGCR be used in MRI systems? Yes, it has a non-magnetic package option suitable for MRI systems.
- How does the ADS5263IRGCR handle overloads? It recovers from 6-dB overloads within one clock cycle.
- What is the operating temperature range of the ADS5263IRGCR? The operating temperature range is -40°C to 85°C.
- What supply voltages are required for the ADS5263IRGCR? It requires a 3.3-V analog supply and a 1.8-V digital supply.
- Does the ADS5263IRGCR support flexible output mapping? Yes, it has a programmable mapper module that allows flexible mapping between ADC input channels and LVDS output pins).
