Overview
The AD9235BCPZ-65 is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates at sampling rates of 20, 40, and 65 mega-samples per second (MSPS) and is designed for applications requiring high accuracy and low power consumption. The AD9235 uses a multistage differential pipelined architecture with output error correction logic, ensuring 12-bit accuracy and no missing codes over the full operating temperature range of –40°C to +85°C. It features a high-performance sample-and-hold amplifier (SHA) and an on-chip voltage reference, making it suitable for various applications in communications, imaging, and medical ultrasound.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 20/40/65 MSPS |
| Power Supply | Single +3 V (2.7 V to 3.6 V) |
| Power Consumption | 300 mW at 65 MSPS |
| Input Type | Differential, single-ended configurable |
| Input Bandwidth | 500 MHz |
| SNR | 70 dBc to Nyquist at 65 MSPS |
| SFDR | 85 dBc to Nyquist at 65 MSPS |
| DNL | ±0.4 LSB |
| Package Options | 28-lead TSSOP, 32-lead LFCSP |
| Operating Temperature | –40°C to +85°C |
Key Features
- High-performance sample-and-hold amplifier (SHA) with 500 MHz bandwidth
- On-chip voltage reference
- Flexible analog input ranges: 1 Vp-p to 2 Vp-p
- Offset binary or twos complement data format
- Clock duty cycle stabilizer (DCS) for maintaining ADC performance over wide clock pulse widths
- Out-of-range (OTR) signal for overflow indication
- Low power consumption: 300 mW at 65 MSPS
- Compatible with 2.5 V and 3.3 V logic families
- Simplified upgrade path from 10-bit to 12-bit for 65 MSPS systems
Applications
- Ultrasound equipment
- IF sampling in communications receivers
- Battery-powered instruments
- Hand-held scopemeters
- Low-cost digital oscilloscopes
Q & A
- What is the resolution of the AD9235BCPZ-65? The AD9235BCPZ-65 has a resolution of 12 bits.
- What are the sampling rates supported by the AD9235BCPZ-65? The AD9235BCPZ-65 supports sampling rates of 20, 40, and 65 MSPS.
- What is the power supply requirement for the AD9235BCPZ-65? The AD9235BCPZ-65 operates from a single +3 V power supply (2.7 V to 3.6 V).
- How much power does the AD9235BCPZ-65 consume at 65 MSPS? The AD9235BCPZ-65 consumes 300 mW at 65 MSPS.
- What types of input configurations are supported by the AD9235BCPZ-65? The AD9235BCPZ-65 supports both differential and single-ended input configurations.
- What is the input bandwidth of the AD9235BCPZ-65? The input bandwidth of the AD9235BCPZ-65 is 500 MHz.
- What are the SNR and SFDR specifications of the AD9235BCPZ-65 at 65 MSPS? The SNR is 70 dBc to Nyquist, and the SFDR is 85 dBc to Nyquist at 65 MSPS.
- What are the package options available for the AD9235BCPZ-65? The AD9235BCPZ-65 is available in 28-lead TSSOP and 32-lead LFCSP packages.
- What is the operating temperature range of the AD9235BCPZ-65? The operating temperature range is –40°C to +85°C.
- Does the AD9235BCPZ-65 support multiple data formats? Yes, the AD9235BCPZ-65 supports both offset binary and twos complement data formats.
