Overview
The AD9238BCPZ-40, produced by Analog Devices Inc., is a dual, 12-bit, analog-to-digital converter (ADC) designed for high-performance applications. It operates on a single 3 V supply and features dual high-performance sample-and-hold amplifiers along with an integrated voltage reference. The AD9238 uses a multistage differential pipelined architecture with output error correction logic to ensure 12-bit accuracy and guarantee no missing codes over the full operating temperature range. This ADC is suitable for various applications including communications, imaging, and medical ultrasound.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Sample Rate | 40 MSPS |
| Supply Voltage | 2.7 V to 3.6 V |
| Power Consumption | 330 mW |
| Signal-to-Noise Ratio (SNR) | 70 dB (to Nyquist) |
| Spurious-Free Dynamic Range (SFDR) | 80.5 dBc (to Nyquist) |
| Input Bandwidth | 500 MHz, 3 dB bandwidth |
| Crosstalk Immunity | > 85 dB |
| Analog Input Range | 1 V p-p to 2 V p-p |
| Data Format | Offset binary or twos complement |
| Package Type | 64-pin LFCSP (9x9mm, 4.70mm exposed pad) |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Integrated dual 12-bit ADC
- Single 3 V supply operation (2.7 V to 3.6 V)
- Low power consumption: 330 mW at 40 MSPS
- Differential input with 500 MHz, 3 dB bandwidth
- Exceptional crosstalk immunity > 85 dB
- Flexible analog input: 1 V p-p to 2 V p-p range
- Offset binary or twos complement data format
- Clock duty cycle stabilizer
- Output datamux option
- Multiplexed data output option enables single-port operation
Applications
The AD9238BCPZ-40 is suitable for a variety of high-performance applications, including:
- Communications systems
- Imaging systems
- Medical ultrasound systems
- Multiplexed systems that switch full-scale voltage levels in successive channels
- Sampling inputs at frequencies well beyond the Nyquist rate
Q & A
- What is the resolution of the AD9238BCPZ-40 ADC?
The AD9238BCPZ-40 has a resolution of 12 bits. - What are the sample rate options for the AD9238?
The AD9238 is available in speed grades of 20 MSPS, 40 MSPS, and 65 MSPS. - What is the power consumption of the AD9238BCPZ-40 at 40 MSPS?
The power consumption is 330 mW at 40 MSPS. - What is the input bandwidth of the AD9238?
The input bandwidth is 500 MHz with a 3 dB bandwidth. - What data formats are supported by the AD9238?
The AD9238 supports both offset binary and twos complement data formats. - Does the AD9238 have a clock duty cycle stabilizer?
Yes, the AD9238 includes a clock duty cycle stabilizer. - What is the operating temperature range of the AD9238BCPZ-40?
The operating temperature range is -40°C to +85°C. - What package types are available for the AD9238?
The AD9238 is available in a 64-pin LFCSP (9x9mm, 4.70mm exposed pad) package. - Is the AD9238 suitable for medical ultrasound applications?
Yes, the AD9238 is suitable for medical ultrasound applications. - Can the AD9238 handle multiplexed systems?
Yes, the AD9238 is suitable for multiplexed systems that switch full-scale voltage levels in successive channels.
