Overview
The AD7266BCPZ, produced by Analog Devices Inc., is a dual, 12-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC). This device operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 2 million samples per second (MSPS). It contains two ADCs, each preceded by a 3-channel multiplexer, and a low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 30 MHz. The AD7266 is designed for easy interfacing with microprocessors or digital signal processors (DSPs) using standard control inputs.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Throughput Rate | Up to 2 MSPS |
| Power Supply | 2.7 V to 5.25 V |
| Power Consumption | 9 mW at 1.5 MSPS with 3 V supplies, 27 mW at 2 MSPS with 5 V supplies |
| Analog Input Configuration | 12-channel single-ended, 6-channel fully differential, 6-channel pseudo differential |
| Signal-to-Noise Ratio (SNR) | 70 dB at 50 kHz input frequency |
| On-chip Reference | 2.5 V ±0.2% maximum @ 25°C, 20 ppm/°C maximum |
| Conversion Time | Determined by SCLK frequency, no pipelined delays |
| Package | 32-Lead LFCSP (5mm x 5mm w/ EP), 32-Lead TQFP (7mm x 7mm x 1mm) |
| Operating Temperature | −40°C to +125°C |
| Shutdown Mode Current | 1 μA maximum |
Key Features
- Dual 12-bit ADCs with 3-channel multiplexers
- Low noise, wide bandwidth track-and-hold amplifier
- Flexible analog input configurations: single-ended, fully differential, and pseudo differential
- On-chip 2.5 V reference with option for external reference
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP
- Low power consumption with flexible power/throughput rate management
- No pipelined delays, conversion initiated on falling edge of CS
Applications
The AD7266 is suitable for a variety of high-speed data acquisition applications, including:
- Medical imaging and diagnostics
- Aerospace and defense systems
- Industrial automation and control systems
- High-speed data logging and monitoring
- Communications and signal processing systems
Q & A
- What is the resolution of the AD7266 ADC?
The AD7266 has a resolution of 12 bits. - What is the maximum throughput rate of the AD7266?
The maximum throughput rate is up to 2 MSPS. - What is the power supply range for the AD7266?
The power supply range is from 2.7 V to 5.25 V. - How much power does the AD7266 consume at 2 MSPS with 5 V supplies?
The power consumption is 27 mW at 2 MSPS with 5 V supplies. - What types of analog input configurations are supported by the AD7266?
The AD7266 supports 12-channel single-ended, 6-channel fully differential, and 6-channel pseudo differential input configurations. - What is the signal-to-noise ratio (SNR) of the AD7266 at 50 kHz input frequency?
The SNR is 70 dB at 50 kHz input frequency. - Can the on-chip reference of the AD7266 be overdriven by an external reference?
Yes, the on-chip 2.5 V reference can be overdriven by an external reference in the range of 100 mV to VDD. - What is the operating temperature range of the AD7266?
The operating temperature range is −40°C to +125°C. - How much current does the AD7266 consume in shutdown mode?
The current consumption in shutdown mode is 1 μA maximum. - What types of packages are available for the AD7266?
The AD7266 is available in 32-Lead LFCSP (5mm x 5mm w/ EP) and 32-Lead TQFP (7mm x 7mm x 1mm) packages.
