Overview
The AD9269BCPZ-20 is a high-performance, dual-channel, 16-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This monolithic device operates on a single 1.8 V analog power supply and features a separate digital output driver supply that can accommodate 1.8 V to 3.3 V logic families. The AD9269 is designed for high-speed applications, supporting conversion rates of 20, 40, 65, and 80 MSPS. It incorporates a multistage differential pipeline architecture with output error correction logic, ensuring 16-bit accuracy and no missing codes over the full operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Conversion Rate | 20, 40, 65, 80 MSPS | |
| Analog Supply Voltage | 1.8 V | V |
| Digital Output Supply Voltage | 1.8 V to 3.3 V | V |
| SNR at 9.7 MHz input | 77.6 dBFS | dBFS |
| SNR at 200 MHz input | 71 dBFS | dBFS |
| SFDR at 9.7 MHz input | 93 dBc | dBc |
| SFDR at 200 MHz input | 80 dBc | dBc |
| Power Consumption at 20 MSPS | 44 mW per channel | mW |
| Power Consumption at 80 MSPS | 100 mW per channel | mW |
| Analog Input Bandwidth | 700 MHz | MHz |
| Package Type | 64-Lead LFCSP (9mm x 9mm x 0.75mm w/ EP) |
Key Features
- Integrated quadrature error correction (QEC) for dc offset, gain, and phase mismatch correction between the two channels.
- On-chip voltage reference and sample-and-hold circuit.
- Differential input with 700 MHz bandwidth.
- 2V p-p differential analog input.
- DNL = −0.5/+1.1 LSB.
- Serial port control options with SPI interface.
- Offset binary, gray code, or twos complement data format.
- Optional clock duty cycle stabilizer (DCS).
- Programmable clock and data alignment, and digital test pattern generation.
Applications
- Communications: Diversity radio systems, multimode digital receivers (GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA).
- I/Q demodulation systems.
- Smart antenna systems.
- Battery-powered instruments: Handheld scope meters.
- Portable medical imaging: Ultrasound.
- Radar/LIDAR systems.
Q & A
- What is the resolution and conversion rate of the AD9269?
The AD9269 is a 16-bit ADC with conversion rates of 20, 40, 65, and 80 MSPS.
- What is the analog supply voltage for the AD9269?
The AD9269 operates on a single 1.8 V analog power supply.
- What are the supported digital output supply voltages?
The digital output driver supply can accommodate 1.8 V to 3.3 V logic families.
- What is the significance of the integrated quadrature error correction (QEC) feature?
The QEC feature corrects for dc offset, gain, and phase mismatches between the two channels, which is beneficial for complex signal processing applications like direct conversion receivers.
- What types of data output formats are supported by the AD9269?
The AD9269 supports offset binary, gray code, or twos complement data formats.
- What is the package type and size of the AD9269?
The AD9269 is packaged in a 64-Lead LFCSP (9mm x 9mm x 0.75mm w/ EP).
- What are the typical power consumption values for the AD9269 at different conversion rates?
The power consumption is 44 mW per channel at 20 MSPS and 100 mW per channel at 80 MSPS.
- What is the bandwidth of the analog input?
The analog input bandwidth is 700 MHz.
- What are some of the key applications of the AD9269?
The AD9269 is used in communications, I/Q demodulation systems, smart antenna systems, battery-powered instruments, portable medical imaging, and radar/LIDAR systems.
- Is there an evaluation board available for the AD9269?
Yes, the AD9269-80EBZ is an evaluation board designed to evaluate the AD9269 dual 16-bit ADC.
